jigsaw | 0f5a2e2efc1284a209edf473789e3ae46ac05c72d0fc1eaea809b400138af5d6 | Triage

Sharing

General

Target

first_sample
Size

148KB
Sample

250316-l7mgna1px3
MD5

dfcb8a4380fcb5652aefe9d3093b9f3b
SHA1

25dfbba6d7b1dd749b47a4becd56245df167226f
SHA256

0f5a2e2efc1284a209edf473789e3ae46ac05c72d0fc1eaea809b400138af5d6
SHA512

9c817a5ee0d246219a395156ecc52ed1b9414d6c533d521222ca9b7fcbb49f24dc72721d7c28ac41046d10b6d173211e78150517fbfafa07949d80895b5ceaff
SSDEEP

3072:PYNTpyq6PtG8vSSdq1MjRlQV6F6aClbgsSGOi:PGcPtG8vv6gxKbgs

Score

10^/10

jigsaw persistence ransomware spyware stealer

Malware Config

Targets

- Target
  
  first_sample
- Size
  
  148KB
- MD5
  
  dfcb8a4380fcb5652aefe9d3093b9f3b
- SHA1
  
  25dfbba6d7b1dd749b47a4becd56245df167226f
- SHA256
  
  0f5a2e2efc1284a209edf473789e3ae46ac05c72d0fc1eaea809b400138af5d6
- SHA512
  
  9c817a5ee0d246219a395156ecc52ed1b9414d6c533d521222ca9b7fcbb49f24dc72721d7c28ac41046d10b6d173211e78150517fbfafa07949d80895b5ceaff
- SSDEEP
  
  3072:PYNTpyq6PtG8vSSdq1MjRlQV6F6aClbgsSGOi:PGcPtG8vv6gxKbgs
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 (2000) 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