General

  • Target

    65d698600a6c47aa7e648d4464125eab8d722180763ee782e514044a8764f9eb.exe

  • Size

    2.4MB

  • Sample

    240601-bxjmxadf95

  • MD5

    5669bb269ef8947834e7be643fa1e6a0

  • SHA1

    aed4f9c99cfb7e30e14be2c614c5fa49decc73cd

  • SHA256

    65d698600a6c47aa7e648d4464125eab8d722180763ee782e514044a8764f9eb

  • SHA512

    736e77f0c0692018918badc09e24adc36e9aa1736f850ad1f1d526aab37c80f032a7d99ab00e86ca79d62ab6137b31a03968188b4b6651e213d451f4beb1408a

  • SSDEEP

    49152:wQc81KnB/a/hNT/ddYa8aesY3Ot4N7G/:wDta/hNT/ddn0etD/

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/ta904ek

https://steamcommunity.com/profiles/76561199695752269

Attributes
  • user_agent

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

Targets

    • Target

      65d698600a6c47aa7e648d4464125eab8d722180763ee782e514044a8764f9eb.exe

    • Size

      2.4MB

    • MD5

      5669bb269ef8947834e7be643fa1e6a0

    • SHA1

      aed4f9c99cfb7e30e14be2c614c5fa49decc73cd

    • SHA256

      65d698600a6c47aa7e648d4464125eab8d722180763ee782e514044a8764f9eb

    • SHA512

      736e77f0c0692018918badc09e24adc36e9aa1736f850ad1f1d526aab37c80f032a7d99ab00e86ca79d62ab6137b31a03968188b4b6651e213d451f4beb1408a

    • SSDEEP

      49152:wQc81KnB/a/hNT/ddYa8aesY3Ot4N7G/:wDta/hNT/ddn0etD/

    • 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