General

  • Target

    5ef59e1cbe41a8d919a0a8e525652ab435e67f8a0ae3758a21dc25403011bda7

  • Size

    7.4MB

  • Sample

    220701-fet35sede4

  • MD5

    26e4e44c3ba14cdaf5a9994192aaf2a5

  • SHA1

    1422aa1e3462da9cf4d96e3ade9310b383c40ebb

  • SHA256

    5ef59e1cbe41a8d919a0a8e525652ab435e67f8a0ae3758a21dc25403011bda7

  • SHA512

    18babf7c5ee51848061cff36ffdbab814bf5f6404d067ddd48f16cb168a99a7964c6a6b49cd1e44f222c77527eed2736946ec7bdd484271d243efdf7c51903ad

Malware Config

Targets

    • Target

      5ef59e1cbe41a8d919a0a8e525652ab435e67f8a0ae3758a21dc25403011bda7

    • Size

      7.4MB

    • MD5

      26e4e44c3ba14cdaf5a9994192aaf2a5

    • SHA1

      1422aa1e3462da9cf4d96e3ade9310b383c40ebb

    • SHA256

      5ef59e1cbe41a8d919a0a8e525652ab435e67f8a0ae3758a21dc25403011bda7

    • SHA512

      18babf7c5ee51848061cff36ffdbab814bf5f6404d067ddd48f16cb168a99a7964c6a6b49cd1e44f222c77527eed2736946ec7bdd484271d243efdf7c51903ad

    • Modifies security service

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

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

    • XMRig Miner Payload

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Possible privilege escalation attempt

    • Stops running service(s)

    • 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.

    • Drops startup file

    • Loads dropped DLL

    • Modifies file permissions

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

2
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

3
T1112

Virtualization/Sandbox Evasion

1
T1497

Impair Defenses

1
T1562

File Permissions Modification

1
T1222

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Impact

Service Stop

1
T1489

Tasks