General

  • Target

    file.exe

  • Size

    3.2MB

  • Sample

    221004-w8b3esbge9

  • MD5

    81298a52170dd27d8afb431efa78e784

  • SHA1

    1bad395207cc7769f321a6f6e8a7f149ec3bc34a

  • SHA256

    e8075dd2f74391aabe1a85eeb7282620b5be0236d6d0a23e7474cf033dd1628a

  • SHA512

    e1872c02d0029cb68230a3e34677adcb064d4c5f96e1e5ccbe667e5a7cb4e0b92207290154bf62736faa561c33a7b1ff8198fd23742e2bf305c6913050e7c1ea

  • SSDEEP

    49152:v6Yz51eviu4apbZe5kyPQBUiuCynpwedGcZeZWN2Ejqs9rEwS0DgFypXk8JBo6Xd:v621Y4apNegX9cAM28qpwS0kq0b6Xzh

Malware Config

Extracted

Family

vidar

Version

54.9

Botnet

1679

C2

https://t.me/larsenup

https://ioc.exchange/@zebra54

Attributes
  • profile_id

    1679

Targets

    • Target

      file.exe

    • Size

      3.2MB

    • MD5

      81298a52170dd27d8afb431efa78e784

    • SHA1

      1bad395207cc7769f321a6f6e8a7f149ec3bc34a

    • SHA256

      e8075dd2f74391aabe1a85eeb7282620b5be0236d6d0a23e7474cf033dd1628a

    • SHA512

      e1872c02d0029cb68230a3e34677adcb064d4c5f96e1e5ccbe667e5a7cb4e0b92207290154bf62736faa561c33a7b1ff8198fd23742e2bf305c6913050e7c1ea

    • SSDEEP

      49152:v6Yz51eviu4apbZe5kyPQBUiuCynpwedGcZeZWN2Ejqs9rEwS0DgFypXk8JBo6Xd:v621Y4apNegX9cAM28qpwS0kq0b6Xzh

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

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

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Loads dropped DLL

    • 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

    • 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.

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

5
T1082

Collection

Data from Local System

3
T1005

Tasks