jigsaw | 3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467 | Triage

Sharing

General

Target

c2c5848ec8ae11e84d42521c527f75ca_JaffaCakes118
Size

2.4MB
Sample

240826-l4yqhszckl
MD5

c2c5848ec8ae11e84d42521c527f75ca
SHA1

d8d98dff64297d4cf8a227a2c138efc4774942b2
SHA256

3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467
SHA512

10e3f210c2d98c090ce3a65be2ff70279c07c1bf3dcb06a48dbfaa34ab6471ed0e8f2a35fbf5bd0c9b61b1c55493c5042daa32556b4b28e22c28e8d80c5d0846
SSDEEP

49152:3rKiRwG7r2ie/XMK+kLg7SdqnCvIUdJi0l2Css5qq2nY4/gX1aNnUm5vL:3RXK+b7ScCvFPx3Kr48UmN

Score

10^/10

jigsaw discovery persistence ransomware spyware stealer

Malware Config

Targets

- Target
  
  c2c5848ec8ae11e84d42521c527f75ca_JaffaCakes118
- Size
  
  2.4MB
- MD5
  
  c2c5848ec8ae11e84d42521c527f75ca
- SHA1
  
  d8d98dff64297d4cf8a227a2c138efc4774942b2
- SHA256
  
  3efc575b6cfd36e57a7b244a860160a35e76c0945bdad1bd79294a1816887467
- SHA512
  
  10e3f210c2d98c090ce3a65be2ff70279c07c1bf3dcb06a48dbfaa34ab6471ed0e8f2a35fbf5bd0c9b61b1c55493c5042daa32556b4b28e22c28e8d80c5d0846
- SSDEEP
  
  49152:3rKiRwG7r2ie/XMK+kLg7SdqnCvIUdJi0l2Css5qq2nY4/gX1aNnUm5vL:3RXK+b7ScCvFPx3Kr48UmN
Score

10^/10

jigsaw discovery persistence ransomware spyware stealer
- Jigsaw Ransomware
  Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
  ransomware jigsaw
- Renames multiple (2642) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Adds Run key to start application
  persistence
- Suspicious use of NtSetInformationThreadHideFromDebugger
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

Credential Access

Unsecured Credentials

Credentials In Files

Discovery

Query Registry

System Information Discovery

System Location Discovery

System Language Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

jigsawdiscoverypersistenceransomwarespywarestealer

behavioral2

jigsawdiscoverypersistenceransomwarespywarestealer