General

  • Target

    36e878979142564fabe92a87322ec15148da06253cd3d210871d11f859d13758

  • Size

    2.6MB

  • Sample

    220320-bv9fjsebfr

  • MD5

    79c8e69402e047f1eea2be4bf214d67a

  • SHA1

    f5ef9b27be43173ca4caef53b5c6c0a87a3a29b7

  • SHA256

    36e878979142564fabe92a87322ec15148da06253cd3d210871d11f859d13758

  • SHA512

    b866367d6af189037cc464aa8e5b221613d7726369c2a37893a1ea51a3e75c5865a128c49470f74732936216c9263dbcf22a18b0698ba1ec42be7c65f37da435

Malware Config

Extracted

Family

vidar

Version

35.7

Botnet

781

C2

http://atrainshop.com/

Attributes
  • profile_id

    781

Targets

    • Target

      36e878979142564fabe92a87322ec15148da06253cd3d210871d11f859d13758

    • Size

      2.6MB

    • MD5

      79c8e69402e047f1eea2be4bf214d67a

    • SHA1

      f5ef9b27be43173ca4caef53b5c6c0a87a3a29b7

    • SHA256

      36e878979142564fabe92a87322ec15148da06253cd3d210871d11f859d13758

    • SHA512

      b866367d6af189037cc464aa8e5b221613d7726369c2a37893a1ea51a3e75c5865a128c49470f74732936216c9263dbcf22a18b0698ba1ec42be7c65f37da435

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

      suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Vidar Stealer

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Accesses 2FA software files, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

4
T1005

Tasks