General

  • Target

    8c6eef98839661d07d146aef292a886e35b40c546b6af699a7ebc6e49481e830

  • Size

    1.7MB

  • Sample

    220516-n2mlksadc9

  • MD5

    cd39bf5cd8dcf1222df0d83f215815e8

  • SHA1

    9f83113e68e74aa57085c3b4af1d06f0a665be0a

  • SHA256

    8c6eef98839661d07d146aef292a886e35b40c546b6af699a7ebc6e49481e830

  • SHA512

    c0575ed94f6591b924d73e56ff4fc05857b12ee8b46aaceacb35b68b7edbf8521d634f408a133d1640d41e28586b8d722eea0e56b387c42134380c3aed27d076

Malware Config

Targets

    • Target

      8c6eef98839661d07d146aef292a886e35b40c546b6af699a7ebc6e49481e830

    • Size

      1.7MB

    • MD5

      cd39bf5cd8dcf1222df0d83f215815e8

    • SHA1

      9f83113e68e74aa57085c3b4af1d06f0a665be0a

    • SHA256

      8c6eef98839661d07d146aef292a886e35b40c546b6af699a7ebc6e49481e830

    • SHA512

      c0575ed94f6591b924d73e56ff4fc05857b12ee8b46aaceacb35b68b7edbf8521d634f408a133d1640d41e28586b8d722eea0e56b387c42134380c3aed27d076

    • 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