General

  • Target

    02eac2d8c04bfbabf5285b5fb1badf755e16ae50899f6bd7b788654e85a20613.exe

  • Size

    421KB

  • Sample

    240607-bc8rasfg97

  • MD5

    277923785bb9e137228d51c5685ee0ab

  • SHA1

    898bb333ca57a435547e17c75cddaf3db9aee116

  • SHA256

    02eac2d8c04bfbabf5285b5fb1badf755e16ae50899f6bd7b788654e85a20613

  • SHA512

    5ca4716d39eca08e46e1a85a28b01c66810c189fd212585dbd8a37bd9ec94e659e45ce64108a855151561278a6abbb770b1b05922fda3d7d0755ba1c824ffff8

  • SSDEEP

    6144:DanQ+kOsq4Dfvn3ai0+02l4CSOh+mF7OPm8vvcsIExBvqioI//3CC3bxwq/FKizC:D6f4DfvniMHF7YcsIWkA/yCVdKiW

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

      02eac2d8c04bfbabf5285b5fb1badf755e16ae50899f6bd7b788654e85a20613.exe

    • Size

      421KB

    • MD5

      277923785bb9e137228d51c5685ee0ab

    • SHA1

      898bb333ca57a435547e17c75cddaf3db9aee116

    • SHA256

      02eac2d8c04bfbabf5285b5fb1badf755e16ae50899f6bd7b788654e85a20613

    • SHA512

      5ca4716d39eca08e46e1a85a28b01c66810c189fd212585dbd8a37bd9ec94e659e45ce64108a855151561278a6abbb770b1b05922fda3d7d0755ba1c824ffff8

    • SSDEEP

      6144:DanQ+kOsq4Dfvn3ai0+02l4CSOh+mF7OPm8vvcsIExBvqioI//3CC3bxwq/FKizC:D6f4DfvniMHF7YcsIWkA/yCVdKiW

    • 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

    • Checks computer location settings

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

    • 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 Enterprise v15

Tasks