General

  • Target

    822fdb61ba0bf0f8d90ca5ae981cc4a903c98b541aff91bb50bc5a53ecb5e6dd.exe

  • Size

    396KB

  • Sample

    240530-bpph7ahc3s

  • MD5

    b45cd3c2fdf57fa8a6f132919b02ac94

  • SHA1

    60f4119079730a3f41250aebde74139b0524754b

  • SHA256

    822fdb61ba0bf0f8d90ca5ae981cc4a903c98b541aff91bb50bc5a53ecb5e6dd

  • SHA512

    6c150f967ef85820b5057cbe48daf5f8951efaeef602e0e6b400f07bb832c9c0c0a00e882ab09d81af437a6f57365ffd578d17255e0a254e3cac683345186d57

  • SSDEEP

    6144:z6ppv/syQTfamA1AxyoXG7tKsKWctiWHYf4W6sEuP1CbRbMWtQb+NN1eRPI:z6UyQTfaTulbiW4QPTsiJMWtQb+7gI

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

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

Targets

    • Target

      822fdb61ba0bf0f8d90ca5ae981cc4a903c98b541aff91bb50bc5a53ecb5e6dd.exe

    • Size

      396KB

    • MD5

      b45cd3c2fdf57fa8a6f132919b02ac94

    • SHA1

      60f4119079730a3f41250aebde74139b0524754b

    • SHA256

      822fdb61ba0bf0f8d90ca5ae981cc4a903c98b541aff91bb50bc5a53ecb5e6dd

    • SHA512

      6c150f967ef85820b5057cbe48daf5f8951efaeef602e0e6b400f07bb832c9c0c0a00e882ab09d81af437a6f57365ffd578d17255e0a254e3cac683345186d57

    • SSDEEP

      6144:z6ppv/syQTfamA1AxyoXG7tKsKWctiWHYf4W6sEuP1CbRbMWtQb+NN1eRPI:z6UyQTfaTulbiW4QPTsiJMWtQb+7gI

    • 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 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

    • 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