djvu | 9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4

General

Target

9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4
Size

705KB
Sample

230213-m4yk7acb61
MD5

e494b79c75746c25bc46d8dcf8ae1732
SHA1

4b395fb66d78adbe3f7c60d68bd7b528f0473174
SHA256

9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4
SHA512

a1ff36885b99230421e88fe25ff03aa3fce09d00bb56bd24512069d865071ef2a69e73b072e05334df1b9f5c4b15a0a6a652f0b84b7c89dedb0ce7502f82b828
SSDEEP

12288:kppaduKBeU4e4Ar72Vo6yVoiSiGN3uli58c5R2E2WXa9SMx+u/5WCWh:kHadN94or72wPfGB6imE2W1UWCW

Score

10^/10

djvu vidar 19 discovery persistence ransomware spyware stealer

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vvmm
offline_id
9c20OtJsXdFeF07b1IeFK5ERGv1zIb659YG380t1
payload_url
http://uaery.top/dl/build2.exe

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

Extracted

Family

vidar

Version

2.4

Botnet

19

Attributes

profile_id
19

Targets

- Target
  
  9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4
- Size
  
  705KB
- MD5
  
  e494b79c75746c25bc46d8dcf8ae1732
- SHA1
  
  4b395fb66d78adbe3f7c60d68bd7b528f0473174
- SHA256
  
  9f16880335ed9b60f1bfb291a2ff85ebab473b27f96e159aa95c6ae59f6b02e4
- SHA512
  
  a1ff36885b99230421e88fe25ff03aa3fce09d00bb56bd24512069d865071ef2a69e73b072e05334df1b9f5c4b15a0a6a652f0b84b7c89dedb0ce7502f82b828
- SSDEEP
  
  12288:kppaduKBeU4e4Ar72Vo6yVoiSiGN3uli58c5R2E2WXa9SMx+u/5WCWh:kHadN94or72wPfGB6imE2W1UWCW
Score

10^/10

djvu vidar 19 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
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- 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