General

  • Target

    0d1cfaf10eb9e05a1376c7c85b14bc65570e0278978d70194232026ec2f986f2

  • Size

    2.0MB

  • Sample

    220520-fa28ysadd2

  • MD5

    71315e1101ebeb067568689f64b5fe2a

  • SHA1

    678e2e1d963d34cbfb597fe2a8327d1f53b2606c

  • SHA256

    0d1cfaf10eb9e05a1376c7c85b14bc65570e0278978d70194232026ec2f986f2

  • SHA512

    e8d0ba61e10ce23f6289cfbf42bb867dc2d1baf4e5eeefc00a2c61b0486a25f1e7aad9e3adfb0c2f48a59156fa89956aaf9219f581fa55a91c9220e4cb6a89c7

Malware Config

Targets

    • Target

      0d1cfaf10eb9e05a1376c7c85b14bc65570e0278978d70194232026ec2f986f2

    • Size

      2.0MB

    • MD5

      71315e1101ebeb067568689f64b5fe2a

    • SHA1

      678e2e1d963d34cbfb597fe2a8327d1f53b2606c

    • SHA256

      0d1cfaf10eb9e05a1376c7c85b14bc65570e0278978d70194232026ec2f986f2

    • SHA512

      e8d0ba61e10ce23f6289cfbf42bb867dc2d1baf4e5eeefc00a2c61b0486a25f1e7aad9e3adfb0c2f48a59156fa89956aaf9219f581fa55a91c9220e4cb6a89c7

    • 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.

    • Checks computer location settings

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

    • Deletes itself

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • 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.

    • Checks installed software on the system

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

    • 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

2
T1497

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

3
T1005

Tasks