jigsaw | hxxp://temp[.]sh/whzOx/trash_malware[.]zip

General

Target

http://temp.sh/whzOx/trash_malware.zip
Sample

250306-1br5laxygz

Score

10^/10

Malware Config

Targets

- Target
  
  http://temp.sh/whzOx/trash_malware.zip
Score

10^/10

jigsaw bootkit defense_evasion discovery exploit persistence privilege_escalation ransomware spyware stealer trojan upx
- Jigsaw Ransomware
  Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
  ransomware jigsaw
- Jigsaw family
  jigsaw
- UAC bypass
  defense_evasion trojan
- Windows security bypass
  defense_evasion trojan
- Renames multiple (2014) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Blocklisted process makes network request
- Boot or Logon Autostart Execution: Active Setup
  Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
  persistence
- Disables RegEdit via registry modification
  defense_evasion
- Event Triggered Execution: AppInit DLLs
  Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
  persistence privilege_escalation
- Possible privilege escalation attempt
  exploit
- Server Software Component: Terminal Services DLL
  persistence
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- Impair Defenses: Safe Mode Boot
  defense_evasion
- Loads dropped DLL
- Modifies file permissions
  discovery
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Windows security modification
  defense_evasion trojan
- Adds Run key to start application
  persistence
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Checks whether UAC is enabled
  defense_evasion trojan
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
- File and Directory Permissions Modification: Windows File and Directory Permissions Modification
  defense_evasion
- Maps connected drives based on registry
  Disk information is often read in order to detect sandboxing environments.
- Power Settings
  powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.
  persistence
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
- Drops file in System32 directory
- Sets desktop wallpaper using registry
  ransomware
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
behavioral1 behavioral2 behavioral3 behavioral4