General

  • Target

    bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98

  • Size

    2.2MB

  • Sample

    240630-dfrcjawfjj

  • MD5

    fe22582c7e3185ada02dd84217bf3adc

  • SHA1

    a839396ac636ca2d7d7fc9d17942e65e281ca9fa

  • SHA256

    bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98

  • SHA512

    3707b4f07c48548f349992405d76323ed8fc02189f4d5401930d65ea285f609943ad8cb5de9431eb6235ac29dbf543bce76293dbb9a187c105613b00ccb3dd02

  • SSDEEP

    49152:qpjNvr9ySAOmw4VHHO+SASagXkJr4MDkUwm:qpjNp7p4VHH8n5A

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

      bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98

    • Size

      2.2MB

    • MD5

      fe22582c7e3185ada02dd84217bf3adc

    • SHA1

      a839396ac636ca2d7d7fc9d17942e65e281ca9fa

    • SHA256

      bf424f7a51514c455568df41d22c5a0749c2e8ac08df15312c71d627ff384b98

    • SHA512

      3707b4f07c48548f349992405d76323ed8fc02189f4d5401930d65ea285f609943ad8cb5de9431eb6235ac29dbf543bce76293dbb9a187c105613b00ccb3dd02

    • SSDEEP

      49152:qpjNvr9ySAOmw4VHHO+SASagXkJr4MDkUwm:qpjNp7p4VHH8n5A

    • 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

    • Loads dropped DLL

    • 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

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

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