General

  • Target

    ab8bb8fe0ac175e5c64ccc0d0aa390562a4b5782c19ed6699bfb7f9ff5610c80

  • Size

    2.2MB

  • Sample

    240630-a8delavajq

  • MD5

    0e424d8bc37804f3a44a09db8d9b8e4b

  • SHA1

    a1f6e04eb9e6187f5586090cff04c23da3b7e054

  • SHA256

    ab8bb8fe0ac175e5c64ccc0d0aa390562a4b5782c19ed6699bfb7f9ff5610c80

  • SHA512

    4619943090348a67f846e5d6e8418a44ccffce89eef966caa16eb8e1eadfa3cd8938d514073fd01bd349c2d1ef059fb3cf608d3546807a815400b4cdb28ad582

  • SSDEEP

    49152:qpjNvr9ySAOmw4FHHO+SASagXkJr4MDkUwm:qpjNp7p4FHH8n5A

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Targets

    • Target

      ab8bb8fe0ac175e5c64ccc0d0aa390562a4b5782c19ed6699bfb7f9ff5610c80

    • Size

      2.2MB

    • MD5

      0e424d8bc37804f3a44a09db8d9b8e4b

    • SHA1

      a1f6e04eb9e6187f5586090cff04c23da3b7e054

    • SHA256

      ab8bb8fe0ac175e5c64ccc0d0aa390562a4b5782c19ed6699bfb7f9ff5610c80

    • SHA512

      4619943090348a67f846e5d6e8418a44ccffce89eef966caa16eb8e1eadfa3cd8938d514073fd01bd349c2d1ef059fb3cf608d3546807a815400b4cdb28ad582

    • SSDEEP

      49152:qpjNvr9ySAOmw4FHHO+SASagXkJr4MDkUwm:qpjNp7p4FHH8n5A

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Detect binaries embedding considerable number of MFA browser extension IDs.

    • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks