General
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Target
https://github.com/NTFS123/MalwareDatabase
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Sample
240621-3srw9szfmk
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/NTFS123/MalwareDatabase
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
https://github.com/NTFS123/MalwareDatabase
Resource
win11-20240611-en
Malware Config
Extracted
C:\Program Files\7-Zip\DECRYPT_YOUR_FILES.HTML
Extracted
C:\Program Files\Common Files\microsoft shared\ClickToRun\DECRYPT_YOUR_FILES.HTML
Extracted
C:\Program Files\7-Zip\DECRYPT_YOUR_FILES.HTML
Targets
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Target
https://github.com/NTFS123/MalwareDatabase
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Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
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Renames multiple (1483) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
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Disables Task Manager via registry modification
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Drops file in Drivers directory
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Event Triggered Execution: AppInit DLLs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
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Possible privilege escalation attempt
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops Chrome extension
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1AppInit DLLs
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1AppInit DLLs
1