General

  • Target
    3bbead075c8303cfd85cb1c1f056ac80f3f373e7d2e1a4c5f34866c803a36063.exe
  • Size 2.5MB
  • Sample240609-bncs1abd4x
  • SHA256 3bbead075c8303cfd85cb1c1f056ac80f3f373e7d2e1a4c5f34866c803a36063
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Extracted

Family
  • vidar

C2
  • https://t.me/r8z0l

  • https://steamcommunity.com/profiles/76561199698764354

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target
      3bbead075c8303cfd85cb1c1f056ac80f3f373e7d2e1a4c5f34866c803a36063.exe
    • Size 2.5MB
    • SHA256 3bbead075c8303cfd85cb1c1f056ac80f3f373e7d2e1a4c5f34866c803a36063
    • MD5 SHA1 SHA512 SSDEEP
    • 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.

    • 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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • 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 Enterprise v15

Tasks