General

  • Target

    b29d9cb34179aaa6bec64c29b2aecf1fdd1ae22e2e94e51db11caf61721c25d9

  • Size

    1.6MB

  • Sample

    240612-ejxt6azhjc

  • MD5

    207ada2041b1a665bf31537c669297d2

  • SHA1

    4da0bcab0a008d6008301537c65b726f74be1f31

  • SHA256

    b29d9cb34179aaa6bec64c29b2aecf1fdd1ae22e2e94e51db11caf61721c25d9

  • SHA512

    b0d648b144aadaeb51f1c2970f7971a0ebc43ad945928c1d718cf1161977c04fbbf84cf0b1663fddd3cd8ef1fd9ba609c3ff8a0f5730ee0d89667beb4da9e42e

  • SSDEEP

    24576:spM5863IGfTAVpalBuUfMxVVtes12FxwojKr98YGeGG9i:spQLYkTYp6BuUkxVVChjHZQs

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

      b29d9cb34179aaa6bec64c29b2aecf1fdd1ae22e2e94e51db11caf61721c25d9

    • Size

      1.6MB

    • MD5

      207ada2041b1a665bf31537c669297d2

    • SHA1

      4da0bcab0a008d6008301537c65b726f74be1f31

    • SHA256

      b29d9cb34179aaa6bec64c29b2aecf1fdd1ae22e2e94e51db11caf61721c25d9

    • SHA512

      b0d648b144aadaeb51f1c2970f7971a0ebc43ad945928c1d718cf1161977c04fbbf84cf0b1663fddd3cd8ef1fd9ba609c3ff8a0f5730ee0d89667beb4da9e42e

    • SSDEEP

      24576:spM5863IGfTAVpalBuUfMxVVtes12FxwojKr98YGeGG9i:spQLYkTYp6BuUkxVVChjHZQs

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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 Matrix ATT&CK v13

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks