General

  • Target

    9797bd1f6fd042772089be43538e56c237855c1f828c5deb394988eee2bccd98

  • Size

    851KB

  • Sample

    211020-n6wp2shab6

  • MD5

    396f2894be1a247cc0b6a526a827671f

  • SHA1

    2df930c851b10ea2bc5d932d3dd5eebcf5c3f39e

  • SHA256

    9797bd1f6fd042772089be43538e56c237855c1f828c5deb394988eee2bccd98

  • SHA512

    9e57f555a514aba9e73bd6c67d74f1cf1c81bba849ef61945c1788a6f2a2851b126256281dd3f027fe827cdd6479f1cb36fd648bfd9f32172c6acca973f40e11

Malware Config

Extracted

Family

vidar

Version

41.5

Botnet

517

C2

https://mas.to/@xeroxxx

Attributes
  • profile_id

    517

Extracted

Family

djvu

C2

http://rlrz.org/fhsgtsspen6

Targets

    • Target

      9797bd1f6fd042772089be43538e56c237855c1f828c5deb394988eee2bccd98

    • Size

      851KB

    • MD5

      396f2894be1a247cc0b6a526a827671f

    • SHA1

      2df930c851b10ea2bc5d932d3dd5eebcf5c3f39e

    • SHA256

      9797bd1f6fd042772089be43538e56c237855c1f828c5deb394988eee2bccd98

    • SHA512

      9e57f555a514aba9e73bd6c67d74f1cf1c81bba849ef61945c1788a6f2a2851b126256281dd3f027fe827cdd6479f1cb36fd648bfd9f32172c6acca973f40e11

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • 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

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks