General

  • Target

    763a8a66d25df98070582790c96d642b2e5427ccd38e6cf90429e10cfad8d2b0

  • Size

    2.1MB

  • Sample

    240522-agnq9aed85

  • MD5

    96ad57f4abbdcdc54cd43ff4cc7c3e6d

  • SHA1

    c0463a4fa84da4e4ea4ad9f7bcf160a523c59945

  • SHA256

    763a8a66d25df98070582790c96d642b2e5427ccd38e6cf90429e10cfad8d2b0

  • SHA512

    da8fa64e8d5817a9e2fae2c5b3268ce7abae36bc9f27647bc7b4dbd75e15a47a6265a8d9b77a144c6828907fd757f0f2e4200df3da2a6bbe4ab50fa0f2ba168b

  • SSDEEP

    49152:N6uDuaS9refmwJtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9TwtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      763a8a66d25df98070582790c96d642b2e5427ccd38e6cf90429e10cfad8d2b0

    • Size

      2.1MB

    • MD5

      96ad57f4abbdcdc54cd43ff4cc7c3e6d

    • SHA1

      c0463a4fa84da4e4ea4ad9f7bcf160a523c59945

    • SHA256

      763a8a66d25df98070582790c96d642b2e5427ccd38e6cf90429e10cfad8d2b0

    • SHA512

      da8fa64e8d5817a9e2fae2c5b3268ce7abae36bc9f27647bc7b4dbd75e15a47a6265a8d9b77a144c6828907fd757f0f2e4200df3da2a6bbe4ab50fa0f2ba168b

    • SSDEEP

      49152:N6uDuaS9refmwJtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9TwtIuoITsdZ

    • 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 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