General

  • Target

    0531bcd90fb2426b5eb306eec924285703ea1f2d80786df2d03ee67f8c6cce5b

  • Size

    1.7MB

  • Sample

    220520-rtesjsgdb8

  • MD5

    7dc329c08eb80f602e8fb5f1e577eb8f

  • SHA1

    76af05bec9bf9c33df9af39c765ab6decd99cd28

  • SHA256

    0531bcd90fb2426b5eb306eec924285703ea1f2d80786df2d03ee67f8c6cce5b

  • SHA512

    1463059b333ec159a96b2afb43eee0e65df6a4e7b217ffdcc72bcd3d62e89a5d86de52a0a4f1f7c7ad7626b8d82c4ec225ad75d70a91d85925ec187aa58e525d

Malware Config

Targets

    • Target

      0531bcd90fb2426b5eb306eec924285703ea1f2d80786df2d03ee67f8c6cce5b

    • Size

      1.7MB

    • MD5

      7dc329c08eb80f602e8fb5f1e577eb8f

    • SHA1

      76af05bec9bf9c33df9af39c765ab6decd99cd28

    • SHA256

      0531bcd90fb2426b5eb306eec924285703ea1f2d80786df2d03ee67f8c6cce5b

    • SHA512

      1463059b333ec159a96b2afb43eee0e65df6a4e7b217ffdcc72bcd3d62e89a5d86de52a0a4f1f7c7ad7626b8d82c4ec225ad75d70a91d85925ec187aa58e525d

    • Looks for VirtualBox Guest Additions in registry

    • Executes dropped EXE

    • Looks for VMWare Tools registry key

    • 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

    • Checks installed software on the system

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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Bootkit

1
T1067

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Discovery

Query Registry

8
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Tasks