djvu | 9f41d76509762bdd3eea0873e008686e218226693dd8e5cd7c9b7e2afdc78a39

General

Target

a0243d13faf96377d439e2c6084969f8.exe
Size

659KB
Sample

221004-gde39secc5
MD5

a0243d13faf96377d439e2c6084969f8
SHA1

ad8dfa7a330a620691bdcc4c1c90826c9054aa48
SHA256

9f41d76509762bdd3eea0873e008686e218226693dd8e5cd7c9b7e2afdc78a39
SHA512

c26310efc94c1a987f2976f3d0f877c7594be9af5c4e12ebc0f9247d1717e5f223615dc93bcfeec07acae0ba9254858b6c6995c56ab243da2336731af15067bd
SSDEEP

12288:Esq0BoWBNHFqtR9xUJbBBwLC14Hl1I2w8OSekAeQIDIAaMfBJTQL:Esq0BomQWdCLIgrPwlSef7uzaM5yL

Score

10^/10

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test1/get.php

Attributes

extension
.oflg
offline_id
xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1
payload_url
http://rgyui.top/dl/build2.exe

http://winnlinne.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Extracted

Family

vidar

Version

54.9

Botnet

517

C2

https://t.me/larsenup

https://ioc.exchange/@zebra54

Attributes

profile_id
517

Targets

- Target
  
  a0243d13faf96377d439e2c6084969f8.exe
- Size
  
  659KB
- MD5
  
  a0243d13faf96377d439e2c6084969f8
- SHA1
  
  ad8dfa7a330a620691bdcc4c1c90826c9054aa48
- SHA256
  
  9f41d76509762bdd3eea0873e008686e218226693dd8e5cd7c9b7e2afdc78a39
- SHA512
  
  c26310efc94c1a987f2976f3d0f877c7594be9af5c4e12ebc0f9247d1717e5f223615dc93bcfeec07acae0ba9254858b6c6995c56ab243da2336731af15067bd
- SSDEEP
  
  12288:Esq0BoWBNHFqtR9xUJbBBwLC14Hl1I2w8OSekAeQIDIAaMfBJTQL:Esq0BomQWdCLIgrPwlSef7uzaM5yL
Score

10^/10

djvu vidar 517 discovery persistence ransomware spyware stealer
- Detected Djvu ransomware
- Djvu Ransomware
  Ransomware which is a variant of the STOP family.
  ransomware djvu
- Vidar
  Vidar is an infostealer based on Arkei stealer.
  stealer vidar
- Downloads MZ/PE file
- Executes dropped EXE
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- 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
- Accesses 2FA software files, possible credential harvesting
  spyware stealer
- Accesses cryptocurrency files/wallets, possible credential harvesting
  spyware
- 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
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext
behavioral1 behavioral2