jigsaw | b3956e268b4ec8b502d7079eb9a73e514d9ba813359a32ce473134eb231e5246 | Triage

Sharing

General

Target

91fb2e88d18489fa38e94db28fe6bbd4_JaffaCakes118
Size

241KB
Sample

241124-cmg7rsymfx
MD5

91fb2e88d18489fa38e94db28fe6bbd4
SHA1

d125dca1bc4ac43ddbf4e0d347c794a8d12d1c2b
SHA256

b3956e268b4ec8b502d7079eb9a73e514d9ba813359a32ce473134eb231e5246
SHA512

6b12c11e22df1ba9c956408a72b156a64c68f9ac08710da2f1560fc936e685f3f4e9b27bbf90054c0301648f8be6ceca1f1591f2db5e4a08b38ae0b6876348c2
SSDEEP

6144:ymDjPbZVxYgAYigWlwkECvrpNFBVfPTj7+JVPzFl+fwF:VjXx1vWlaCDpNbt4FMY

Score

10^/10

jigsaw persistence ransomware spyware stealer

Malware Config

Targets

- Target
  
  91fb2e88d18489fa38e94db28fe6bbd4_JaffaCakes118
- Size
  
  241KB
- MD5
  
  91fb2e88d18489fa38e94db28fe6bbd4
- SHA1
  
  d125dca1bc4ac43ddbf4e0d347c794a8d12d1c2b
- SHA256
  
  b3956e268b4ec8b502d7079eb9a73e514d9ba813359a32ce473134eb231e5246
- SHA512
  
  6b12c11e22df1ba9c956408a72b156a64c68f9ac08710da2f1560fc936e685f3f4e9b27bbf90054c0301648f8be6ceca1f1591f2db5e4a08b38ae0b6876348c2
- SSDEEP
  
  6144:ymDjPbZVxYgAYigWlwkECvrpNFBVfPTj7+JVPzFl+fwF:VjXx1vWlaCDpNbt4FMY
Score

10^/10

jigsaw 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
- Jigsaw family
  jigsaw
- Renames multiple (1966) 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.
- Executes dropped EXE
- 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
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

Credentials from Password Stores

Credentials from Web Browsers

Unsecured Credentials

Credentials In Files

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

jigsawpersistenceransomwarespywarestealer

behavioral2

jigsawpersistenceransomwarespywarestealer