Diaries by Keyword - SANS Internet Storm Center

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Handler on Duty: Jesse La Grew

Threat Level: green

Date	Author	Title
REVERSE SHELL ATTACKS
2021-02-01	Rob VandenBrink	Taking a Shot at Reverse Shell Attacks, CNC Phone Home and Data Exfil from Servers
REVERSE
2021-02-01/a>	Rob VandenBrink	Taking a Shot at Reverse Shell Attacks, CNC Phone Home and Data Exfil from Servers
2018-06-29/a>	Remco Verhoef	Crypto community target of MacOS malware
2014-04-13/a>	Kevin Shortt	Reverse Heartbleed Testing
2012-09-14/a>	Lenny Zeltser	Analyzing Malicious RTF Files Using OfficeMalScanner's RTFScan
2012-06-04/a>	Lenny Zeltser	Decoding Common XOR Obfuscation in Malicious Code
2010-11-18/a>	Chris Carboni	Stopping the ZeroAccess Rootkit
2010-02-13/a>	Lorna Hutcheson	Network Traffic Analysis in Reverse
SHELL
2024-03-28/a>	Xavier Mertens	From JavaScript to AsyncRAT
2024-02-09/a>	Xavier Mertens	MSIX With Heavily Obfuscated PowerShell Script
2024-01-26/a>	Xavier Mertens	A Batch File With Multiple Payloads
2024-01-12/a>	Xavier Mertens	One File, Two Payloads
2024-01-05/a>	Rob VandenBrink	Netstat, but Better and in PowerShell
2024-01-03/a>	Jan Kopriva	Interesting large and small malspam attachments from 2023
2023-11-18/a>	Xavier Mertens	Quasar RAT Delivered Through Updated SharpLoader
2023-09-09/a>	Guy Bruneau	?Anyone get the ASN of the Truck that Hit Me?!?: Creating a PowerShell Function to Make 3rd Party API Calls for Extending Honeypot Information [Guest Diary]
2023-08-03/a>	Jan Kopriva	From small LNK to large malicious BAT file with zero VT score
2023-07-28/a>	Xavier Mertens	ShellCode Hidden with Steganography
2023-06-29/a>	Brad Duncan	GuLoader- or DBatLoader/ModiLoader-style infection for Remcos RAT
2023-06-19/a>	Xavier Mertens	Malware Delivered Through .inf File
2023-06-09/a>	Xavier Mertens	Undetected PowerShell Backdoor Disguised as a Profile File
2023-05-17/a>	Xavier Mertens	Increase in Malicious RAR SFX files
2023-04-19/a>	Rob VandenBrink	Taking a Bite Out of Password Expiry Helpdesk Calls
2023-03-30/a>	Xavier Mertens	Bypassing PowerShell Strong Obfuscation
2023-03-21/a>	Didier Stevens	String Obfuscation: Character Pair Reversal
2023-03-16/a>	Xavier Mertens	Simple Shellcode Dissection
2023-02-10/a>	Xavier Mertens	Obfuscated Deactivation of Script Block Logging
2023-01-17/a>	Rob VandenBrink	Finding that one GPO Setting in a Pool of Hundreds of GPOs
2023-01-04/a>	Rob VandenBrink	Update to RTRBK - Diff and File Dates in PowerShell
2022-12-28/a>	Rob VandenBrink	Playing with Powershell and JSON (and Amazon and Firewalls)
2022-11-09/a>	Xavier Mertens	Another Script-Based Ransomware
2022-10-31/a>	Rob VandenBrink	NMAP without NMAP - Port Testing and Scanning with PowerShell
2022-10-17/a>	Xavier Mertens	Fileless Powershell Dropper
2022-10-07/a>	Xavier Mertens	Powershell Backdoor with DGA Capability
2022-09-14/a>	Xavier Mertens	Easy Process Injection within Python
2022-07-25/a>	Xavier Mertens	PowerShell Script with Fileless Capability
2022-06-25/a>	Xavier Mertens	Malicious Code Passed to PowerShell via the Clipboard
2022-06-22/a>	Xavier Mertens	Malicious PowerShell Targeting Cryptocurrency Browser Extensions
2022-06-03/a>	Xavier Mertens	Sandbox Evasion... With Just a Filename!
2022-05-12/a>	Rob VandenBrink	When Get-WebRequest Fails You
2022-04-25/a>	Xavier Mertens	Simple PDF Linking to Malicious Content
2022-03-31/a>	Johannes Ullrich	Spring Vulnerability Update - Exploitation Attempts CVE-2022-22965
2022-03-30/a>	Johannes Ullrich	Possible new Java Spring Framework Vulnerability (Updated: not a Spring problem)
2022-03-30/a>	Johannes Ullrich	Java Springtime Confusion: What Vulnerability are We Talking About
2022-03-11/a>	Xavier Mertens	Keep an Eye on WebSockets
2022-02-23/a>	Johannes Ullrich	The Rise and Fall of log4shell
2022-01-22/a>	Xavier Mertens	Mixed VBA & Excel4 Macro In a Targeted Excel Sheet
2022-01-20/a>	Xavier Mertens	RedLine Stealer Delivered Through FTP
2022-01-17/a>	Johannes Ullrich	Log4Shell Attacks Getting "Smarter"
2022-01-06/a>	Xavier Mertens	Malicious Python Script Targeting Chinese People
2021-12-23/a>	Johannes Ullrich	log4shell and cloud provider internal meta data services (IMDS)
2021-12-23/a>	Johannes Ullrich	Defending Cloud IMDS Against log4shell (and more)
2021-12-21/a>	Xavier Mertens	More Undetected PowerShell Dropper
2021-12-15/a>	Xavier Mertens	Simple but Undetected PowerShell Backdoor
2021-12-14/a>	Johannes Ullrich	Log4j: Getting ready for the long haul (CVE-2021-44228)
2021-12-11/a>	Johannes Ullrich	Log4j / Log4Shell Followup: What we see and how to defend (and how to access our data)
2021-12-10/a>	Xavier Mertens	Python Shellcode Injection From JSON Data
2021-12-10/a>	Bojan Zdrnja	RCE in log4j, Log4Shell, or how things can get bad quickly
2021-12-07/a>	Johannes Ullrich	Webshells, Webshells everywhere!
2021-11-15/a>	Rob VandenBrink	Changing your AD Password Using the Clipboard - Not as Easy as You'd Think!
2021-10-18/a>	Xavier Mertens	Malicious PowerShell Using Client Certificate Authentication
2021-10-01/a>	Xavier Mertens	New Tool to Add to Your LOLBAS List: cvtres.exe
2021-08-20/a>	Xavier Mertens	Waiting for the C2 to Show Up
2021-08-09/a>	Jan Kopriva	ProxyShell - how many Exchange servers are affected and where are they?
2021-05-28/a>	Xavier Mertens	Malicious PowerShell Hosted on script.google.com
2021-05-18/a>	Xavier Mertens	From RunDLL32 to JavaScript then PowerShell
2021-05-06/a>	Xavier Mertens	Alternative Ways To Perform Basic Tasks
2021-04-08/a>	Xavier Mertens	Simple Powershell Ransomware Creating a 7Z Archive of your Files
2021-02-12/a>	Xavier Mertens	AgentTesla Dropped Through Automatic Click in Microsoft Help File
2021-02-01/a>	Rob VandenBrink	Taking a Shot at Reverse Shell Attacks, CNC Phone Home and Data Exfil from Servers
2021-01-21/a>	Xavier Mertens	Powershell Dropping a REvil Ransomware
2021-01-18/a>	Didier Stevens	Doc & RTF Malicious Document
2021-01-10/a>	Didier Stevens	Maldoc Analysis With CyberChef
2021-01-09/a>	Didier Stevens	Maldoc Strings Analysis
2020-12-24/a>	Xavier Mertens	Malicious Word Document Delivering an Octopus Backdoor
2020-11-30/a>	Didier Stevens	Decrypting PowerShell Payloads (video)
2020-11-25/a>	Xavier Mertens	Live Patching Windows API Calls Using PowerShell
2020-11-19/a>	Xavier Mertens	PowerShell Dropper Delivering Formbook
2020-11-05/a>	Xavier Mertens	Did You Spot "Invoke-Expression"?
2020-09-24/a>	Xavier Mertens	Party in Ibiza with PowerShell
2020-09-23/a>	Xavier Mertens	Malicious Word Document with Dynamic Content
2020-09-11/a>	Rob VandenBrink	What's in Your Clipboard? Pillaging and Protecting the Clipboard
2020-09-02/a>	Xavier Mertens	Python and Risky Windows API Calls
2020-08-28/a>	Xavier Mertens	Example of Malicious DLL Injected in PowerShell
2020-08-20/a>	Rob VandenBrink	Office 365 Mail Forwarding Rules (and other Mail Rules too)
2020-08-06/a>	Xavier Mertens	A Fork of the FTCode Powershell Ransomware
2020-08-03/a>	Xavier Mertens	Powershell Bot with Multiple C2 Protocols
2020-07-27/a>	Didier Stevens	Analyzing Metasploit ASP .NET Payloads
2020-07-19/a>	Guy Bruneau	Scanning Activity for ZeroShell Unauthenticated Access
2020-06-12/a>	Xavier Mertens	Malicious Excel Delivering Fileless Payload
2020-05-15/a>	Rob VandenBrink	Hashes in PowerShell
2020-05-15/a>	Rob VandenBrink	SHA3 Hashes (on Windows) - Where Art Thou?
2020-04-27/a>	Xavier Mertens	Powershell Payload Stored in a PSCredential Object
2020-04-24/a>	Xavier Mertens	Malicious Excel With a Strong Obfuscation and Sandbox Evasion
2020-04-17/a>	Xavier Mertens	Weaponized RTF Document Generator & Mailer in PowerShell
2020-04-10/a>	Xavier Mertens	PowerShell Sample Extracting Payload From SSL
2020-02-28/a>	Xavier Mertens	Show me Your Clipboard Data!
2020-01-23/a>	Xavier Mertens	Complex Obfuscation VS Simple Trick
2019-12-26/a>	Xavier Mertens	Bypassing UAC to Install a Cryptominer
2019-12-09/a>	Didier Stevens	(Lazy) Sunday Maldoc Analysis
2019-10-27/a>	Didier Stevens	Using scdbg to Find Shellcode
2019-10-25/a>	Rob VandenBrink	More on DNS Archeology (with PowerShell)
2019-09-17/a>	Rob VandenBrink	Investigating Gaps in your Windows Event Logs
2019-07-28/a>	Didier Stevens	Video: Analyzing Compressed PowerShell Scripts
2019-07-11/a>	Xavier Mertens	Russian Dolls Malicious Script Delivering Ursnif
2019-07-10/a>	Rob VandenBrink	Dumping File Contents in Hex (in PowerShell)
2019-06-28/a>	Rob VandenBrink	Verifying Running Processes against VirusTotal - Domain-Wide
2019-06-27/a>	Rob VandenBrink	Finding the Gold in a Pile of Pennies - Long Tail Analysis in PowerShell
2019-06-21/a>	Rob VandenBrink	Netstat Local and Remote -new and improved, now with more PowerShell!
2019-06-03/a>	Didier Stevens	Tip: BASE64 Encoded PowerShell Scripts are Recognizable by the Amount of Letter As
2019-05-31/a>	Didier Stevens	Retrieving Second Stage Payload with Ncat
2019-05-30/a>	Didier Stevens	Analyzing First Stage Shellcode
2019-05-28/a>	Didier Stevens	Office Document & BASE64? PowerShell!
2019-04-25/a>	Rob VandenBrink	Service Accounts Redux - Collecting Service Accounts with PowerShell
2019-04-24/a>	Rob VandenBrink	Where have all the Domain Admins gone? Rooting out Unwanted Domain Administrators
2019-04-04/a>	Xavier Mertens	New Waves of Scans Detected by an Old Rule
2019-03-30/a>	Didier Stevens	"404" is not Malware
2019-03-20/a>	Rob VandenBrink	Using AD to find hosts that aren't in AD - fun with the [IPAddress] construct!
2019-03-10/a>	Didier Stevens	Malicious HTA Analysis by a Reader
2019-03-10/a>	Didier Stevens	Quick and Dirty Malicious HTA Analysis
2019-03-05/a>	Rob VandenBrink	Powershell, Active Directory and the Windows Host Firewall
2019-02-21/a>	Xavier Mertens	Simple Powershell Keyloggers are Back
2019-02-17/a>	Didier Stevens	Video: Finding Property Values in Office Documents
2019-02-16/a>	Didier Stevens	Finding Property Values in Office Documents
2019-02-10/a>	Didier Stevens	Video: Maldoc Analysis of the Weekend
2019-02-09/a>	Didier Stevens	Maldoc Analysis of the Weekend
2019-01-24/a>	Brad Duncan	Malspam with Word docs uses macro to run Powershell script and steal system data
2019-01-14/a>	Rob VandenBrink	Microsoft LAPS - Blue Team / Red Team
2019-01-02/a>	Didier Stevens	Maldoc with Nonfunctional Shellcode
2019-01-02/a>	Xavier Mertens	Malicious Script Leaking Data via FTP
2018-12-19/a>	Xavier Mertens	Restricting PowerShell Capabilities with NetSh
2018-12-15/a>	Didier Stevens	De-DOSfuscation Example
2018-12-12/a>	Didier Stevens	Yet Another DOSfuscation Sample
2018-12-03/a>	Didier Stevens	Word maldoc: yet another place to hide a command
2018-11-27/a>	Xavier Mertens	More obfuscated shell scripts: Fake MacOS Flash update
2018-11-26/a>	Xavier Mertens	Obfuscated bash script targeting QNap boxes
2018-11-22/a>	Xavier Mertens	Divided Payload in Multiple Pasties
2018-11-16/a>	Xavier Mertens	Basic Obfuscation With Permissive Languages
2018-11-06/a>	Xavier Mertens	Malicious Powershell Script Dissection
2018-10-26/a>	Xavier Mertens	Dissecting Malicious Office Documents with Linux
2018-10-22/a>	Xavier Mertens	Malicious Powershell using a Decoy Picture
2018-09-30/a>	Didier Stevens	When DOSfuscation Helps...
2018-09-24/a>	Didier Stevens	Analyzing Encoded Shellcode with scdbg
2018-09-08/a>	Didier Stevens	Video: Using scdbg to analyze shellcode
2018-09-05/a>	Xavier Mertens	Malicious PowerShell Compiling C# Code on the Fly
2018-09-03/a>	Didier Stevens	Another quickie: Using scdbg to analyze shellcode
2018-08-31/a>	Jim Clausing	Quickie: Using radare2 to disassemble shellcode
2018-07-30/a>	Didier Stevens	Malicious Word documents using DOSfuscation
2018-07-26/a>	Xavier Mertens	Windows Batch File Deobfuscation
2018-06-19/a>	Xavier Mertens	PowerShell: ScriptBlock Logging... Or Not?
2018-06-04/a>	Rob VandenBrink	Digging into Authenticode Certificates
2018-05-19/a>	Xavier Mertens	Malicious Powershell Targeting UK Bank Customers
2018-05-09/a>	Xavier Mertens	Nice Phishing Sample Delivering Trickbot
2018-05-06/a>	Guy Bruneau	Scans Attempting to use PowerShell to Download PHP Script
2018-03-04/a>	Xavier Mertens	The Crypto Miners Fight For CPU Cycles
2017-11-29/a>	Xavier Mertens	Fileless Malicious PowerShell Sample
2017-11-15/a>	Xavier Mertens	If you want something done right, do it yourself!
2017-11-11/a>	Xavier Mertens	Keep An Eye on your Root Certificates
2017-10-31/a>	Xavier Mertens	Some Powershell Malicious Code
2017-09-14/a>	Xavier Mertens	Another webshell, another backdoor!
2017-09-11/a>	Russ McRee	Windows Auditing with WINspect
2017-08-23/a>	Xavier Mertens	Malicious script dropping an executable signed by Avast?
2017-08-20/a>	Didier Stevens	It's Not An Invoice ...
2017-08-01/a>	Rob VandenBrink	Rooting Out Hosts that Support Older Samba Versions
2017-05-12/a>	Xavier Mertens	When Bad Guys are Pwning Bad Guys...
2017-05-03/a>	Bojan Zdrnja	Powershelling with exploits
2017-03-30/a>	Xavier Mertens	Diverting built-in features for the bad
2017-02-28/a>	Xavier Mertens	Analysis of a Simple PHP Backdoor
2017-02-17/a>	Rob VandenBrink	RTRBK - Router / Switch / Firewall Backups in PowerShell (tool drop)
2016-12-02/a>	Rob VandenBrink	Protecting Powershell Credentials (NOT)
2016-11-24/a>	Didier Stevens	Extracting Shellcode From JavaScript
2016-11-23/a>	Tom Webb	Mapping Attack Methodology to Controls
2016-11-18/a>	Didier Stevens	VBA Shellcode and Windows 10
2016-10-31/a>	Russ McRee	SEC505 DFIR capture script: snapshot.ps1
2016-07-13/a>	Xavier Mertens	The Power of Web Shells
2016-06-03/a>	Tom Liston	MySQL is YourSQL
2016-04-28/a>	Rob VandenBrink	DNS and DHCP Recon using Powershell
2016-04-15/a>	Xavier Mertens	Windows Command Line Persistence?
2016-01-26/a>	Rob VandenBrink	Pentest Time Machine: NMAP + Powershell + whatever tool is next
2016-01-25/a>	Rob VandenBrink	Assessing Remote Certificates with Powershell
2016-01-19/a>	Rob VandenBrink	Powershell and HTTPS ? It Ain?t All Rainbows And Lollipops! (or is it?)
2016-01-06/a>	Russ McRee	toolsmith #112: Red vs Blue - PowerSploit vs PowerForensics
2015-12-14/a>	Russ McRee	AD Security's Unofficial Guide to Mimikatz & Command Reference
2015-12-10/a>	Rob VandenBrink	Uninstalling Problem Applications using Powershell
2015-12-09/a>	Xavier Mertens	Enforcing USB Storage Policy with PowerShell
2015-12-02/a>	Rob VandenBrink	Nessus and Powershell is like Chocolate and Peanut Butter!
2015-08-12/a>	Rob VandenBrink	Windows Service Accounts - Why They're Evil and Why Pentesters Love them!
2015-06-29/a>	Rob VandenBrink	The Powershell Diaries 2 - Software Inventory
2015-06-24/a>	Rob VandenBrink	The Powershell Diaries - Finding Problem User Accounts in AD
2015-03-30/a>	Didier Stevens	YARA Rules For Shellcode
2015-02-03/a>	Johannes Ullrich	Another Network Forensic Tool for the Toolbox - Dshell
2014-10-24/a>	Kevin Liston	Shellshock via SMTP
2014-10-23/a>	Russ McRee	Digest: 23 OCT 2014
2014-10-06/a>	Johannes Ullrich	Shellshock: More details released about CVE-2014-6277 and CVE-2014-6278. Also: Does Windows have a shellshock problem?
2014-10-01/a>	Russ McRee	Security Onion news: Updated ShellShock detection scripts for Bro
2014-09-29/a>	Johannes Ullrich	Apple Released Update to Fix Shellshock Vulnerability http://support.apple.com/kb/DL1769
2014-09-25/a>	Johannes Ullrich	Update on CVE-2014-6271: Vulnerability in bash (shellshock)
2014-04-06/a>	Basil Alawi S.Taher	"Power Worm" PowerShell based Malware
2013-10-26/a>	Guy Bruneau	Active Perl/Shellbot Trojan
2013-06-25/a>	Bojan Zdrnja	The race for resources
2013-02-28/a>	Daniel Wesemann	Parsing Windows Eventlogs in Powershell
2012-04-25/a>	Daniel Wesemann	Blacole's shell code
2011-11-10/a>	Rob VandenBrink	Stuff I Learned Scripting - - Parsing XML in a One-Liner
2009-10-17/a>	Rick Wanner	Cyber Security Awareness Month - Day 17 - Port 22/SSH
2009-07-05/a>	Bojan Zdrnja	More on ColdFusion hacks
ATTACKS
2024-01-08/a>	Jesse La Grew	What is that User Agent?
2022-08-10/a>	Johannes Ullrich	And Here They Come Again: DNS Reflection Attacks
2021-02-01/a>	Rob VandenBrink	Taking a Shot at Reverse Shell Attacks, CNC Phone Home and Data Exfil from Servers
2019-08-25/a>	Guy Bruneau	Are there any Advantages of Buying Cyber Security Insurance?
2016-11-02/a>	Rob VandenBrink	What Does a Pentest Look Like?
2016-06-03/a>	Tom Liston	MySQL is YourSQL
2015-02-19/a>	Daniel Wesemann	DNS-based DDoS
2014-02-26/a>	Russ McRee	Ongoing NTP Amplification Attacks
2014-02-17/a>	Chris Mohan	NTP reflection attacks continue
2013-08-19/a>	Guy Bruneau	Business Risks and Cyber Attacks
2013-07-27/a>	Scott Fendley	Defending Against Web Server Denial of Service Attacks
2011-12-28/a>	Daniel Wesemann	Hash collisions vulnerability in web servers
2010-08-16/a>	Raul Siles	DDOS: State of the Art
2010-08-13/a>	Tom Liston	The Strange Case of Doctor Jekyll and Mr. ED
2010-01-29/a>	Johannes Ullrich	Analyzing isc.sans.org weblogs, part 2, RFI attacks
2009-02-25/a>	Swa Frantzen	Targeted link diversion attempts
2009-01-18/a>	Maarten Van Horenbeeck	Targeted social engineering
2008-12-03/a>	Andre Ludwig	New ISC Poll! Has your organization suffered a DDoS (Distributed Denial of Service) attack in the last year?

REVERSE SHELL ATTACKS

REVERSE

SHELL

ATTACKS