General

  • Target

    4aff771e5595904d0d6a10f74910aeb1f68e6ec34e8a2e74e915b78139a90b95

  • Size

    2.2MB

  • Sample

    240701-h629yasdqk

  • MD5

    d7186946ba0926a9bdbdcb33ab59768d

  • SHA1

    36efd4957378955206d44495e76a7f27921cf14f

  • SHA256

    4aff771e5595904d0d6a10f74910aeb1f68e6ec34e8a2e74e915b78139a90b95

  • SHA512

    64b76b93cc59a0a88b5f5050dcf375032574d80b534a44252dd7e8d857b3a041efe67416c57201302aab4552b7acad909b268f8164865c680035a4896064002c

  • SSDEEP

    24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXfqU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPp21tuuIeNHYGY0LzjsJxK

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

      4aff771e5595904d0d6a10f74910aeb1f68e6ec34e8a2e74e915b78139a90b95

    • Size

      2.2MB

    • MD5

      d7186946ba0926a9bdbdcb33ab59768d

    • SHA1

      36efd4957378955206d44495e76a7f27921cf14f

    • SHA256

      4aff771e5595904d0d6a10f74910aeb1f68e6ec34e8a2e74e915b78139a90b95

    • SHA512

      64b76b93cc59a0a88b5f5050dcf375032574d80b534a44252dd7e8d857b3a041efe67416c57201302aab4552b7acad909b268f8164865c680035a4896064002c

    • SSDEEP

      24576:Uc0PyhhGkCI1wUL24jtYkYGbawg757CgXueAgXfqU2MZQti1u8LnsDJY6WpEYGYG:UJ0hsA91MPp21tuuIeNHYGY0LzjsJxK

    • 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