General

  • Target

    9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe

  • Size

    368KB

  • Sample

    240614-b4jaqazgqg

  • MD5

    bf808afcc221165140ff57a5e31bdef2

  • SHA1

    64f4ddd4a0f8cde10c990e6167fefb95a311ccec

  • SHA256

    9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885

  • SHA512

    d1521cd2ca9e064a08f4252bd82c0b6c97c464c49cd327a201d085107201e9cac02a9b311e042e79ee1eddee482975afea1ef0682e2c8bbd74e1415f23cbe1cf

  • SSDEEP

    3072:VUrql9LC/xRNNWY+/BFsiLMcOQlBDQiOKehsPsPn0ScNMvlL+l0A+5NnpINCfh1:VUraLC/xRPO/BmjJQlNKhskHcwL+W/b

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/memve4erin

https://steamcommunity.com/profiles/76561199699680841

Attributes
  • user_agent

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

Extracted

Family

systembc

C2

173.211.46.4:4299

127.0.0.1:4299

Targets

    • Target

      9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885.exe

    • Size

      368KB

    • MD5

      bf808afcc221165140ff57a5e31bdef2

    • SHA1

      64f4ddd4a0f8cde10c990e6167fefb95a311ccec

    • SHA256

      9fd04eb7256cd879dc38ea0765ffc538b89e708ba30250f23d947c3713f97885

    • SHA512

      d1521cd2ca9e064a08f4252bd82c0b6c97c464c49cd327a201d085107201e9cac02a9b311e042e79ee1eddee482975afea1ef0682e2c8bbd74e1415f23cbe1cf

    • SSDEEP

      3072:VUrql9LC/xRNNWY+/BFsiLMcOQlBDQiOKehsPsPn0ScNMvlL+l0A+5NnpINCfh1:VUraLC/xRPO/BmjJQlNKhskHcwL+W/b

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • SystemBC

      SystemBC is a proxy and remote administration tool first seen in 2019.

    • 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.

    • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • Detects executables containing potential Windows Defender anti-emulation checks

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Deletes itself

    • 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 local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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

    • 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.

MITRE ATT&CK Enterprise v15

Tasks