General

  • Target

    b53144e47aeb73e100c7f0d74d5c9739cc3ecf07c2ff915f3571aad94822293e

  • Size

    2.2MB

  • Sample

    240701-b62j3sseje

  • MD5

    1a7c7c20a178ef66403ea8d77af99506

  • SHA1

    74189153fff6d6ac7472f9167b328c479fe62edc

  • SHA256

    b53144e47aeb73e100c7f0d74d5c9739cc3ecf07c2ff915f3571aad94822293e

  • SHA512

    dceb679f5f5a6f94110976ad68c4bb9425a9ff5fd56e0b4a822414bde33a2ecfcb2f106091fcb78f087f2d506093b3fd9f48d7a31ce0a66da17b661848611d0d

  • SSDEEP

    24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXTjU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPk21tuuIeNHYGY0LzjsJxK

Malware Config

Extracted

Family

vidar

C2

https://t.me/g067n

https://steamcommunity.com/profiles/76561199707802586

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0

Targets

    • Target

      b53144e47aeb73e100c7f0d74d5c9739cc3ecf07c2ff915f3571aad94822293e

    • Size

      2.2MB

    • MD5

      1a7c7c20a178ef66403ea8d77af99506

    • SHA1

      74189153fff6d6ac7472f9167b328c479fe62edc

    • SHA256

      b53144e47aeb73e100c7f0d74d5c9739cc3ecf07c2ff915f3571aad94822293e

    • SHA512

      dceb679f5f5a6f94110976ad68c4bb9425a9ff5fd56e0b4a822414bde33a2ecfcb2f106091fcb78f087f2d506093b3fd9f48d7a31ce0a66da17b661848611d0d

    • SSDEEP

      24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXTjU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPk21tuuIeNHYGY0LzjsJxK

    • 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