General

  • Target

    file.exe

  • Size

    5.0MB

  • Sample

    221010-kybhcsbdgr

  • MD5

    f31b3235d9c86fd1d8cd75d0cab28480

  • SHA1

    6621cbf0016febb18b2194a3382bdc5989ec190b

  • SHA256

    cf9ec473c74f0c8a122612aac898a544259bca56ed65cf13078671b192d2b18e

  • SHA512

    9a4c4e9702f9d134a110206b2f8e1e893ca62e07ee82fbcebf1490be26f56b8538286f8bc46edb378236adef09ce6ccbfb7326af2b3c5f8a4f10c3e1948a70f1

  • SSDEEP

    98304:OVj2YASI2ad3wNbgcEJD7/z2q9/0hEYB6nQaARrsMnsd+f:4iSFaZ68c0Cqh+P1I

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

      5.0MB

    • MD5

      f31b3235d9c86fd1d8cd75d0cab28480

    • SHA1

      6621cbf0016febb18b2194a3382bdc5989ec190b

    • SHA256

      cf9ec473c74f0c8a122612aac898a544259bca56ed65cf13078671b192d2b18e

    • SHA512

      9a4c4e9702f9d134a110206b2f8e1e893ca62e07ee82fbcebf1490be26f56b8538286f8bc46edb378236adef09ce6ccbfb7326af2b3c5f8a4f10c3e1948a70f1

    • SSDEEP

      98304:OVj2YASI2ad3wNbgcEJD7/z2q9/0hEYB6nQaARrsMnsd+f:4iSFaZ68c0Cqh+P1I

    • 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.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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