General

  • Target

    1b29fa6397bb1be0f94bc296471f7e0dec7df372fae367bde4837289a9ddf9ed

  • Size

    7.4MB

  • Sample

    220626-17qxeacegn

  • MD5

    a631243304a5bf10c26f919e50a99bae

  • SHA1

    715cdcd8fe0344cc55ab5a30734f217f93312f3d

  • SHA256

    1b29fa6397bb1be0f94bc296471f7e0dec7df372fae367bde4837289a9ddf9ed

  • SHA512

    7459fbdf5aa2effde35f5b8399ab3ab56df7f48fa54b65c1565bbd17720da5b46ca1c9f8a27ad61f0021699048831eeb2b3f7c0afccd715a2ea537f520343651

Malware Config

Targets

    • Target

      1b29fa6397bb1be0f94bc296471f7e0dec7df372fae367bde4837289a9ddf9ed

    • Size

      7.4MB

    • MD5

      a631243304a5bf10c26f919e50a99bae

    • SHA1

      715cdcd8fe0344cc55ab5a30734f217f93312f3d

    • SHA256

      1b29fa6397bb1be0f94bc296471f7e0dec7df372fae367bde4837289a9ddf9ed

    • SHA512

      7459fbdf5aa2effde35f5b8399ab3ab56df7f48fa54b65c1565bbd17720da5b46ca1c9f8a27ad61f0021699048831eeb2b3f7c0afccd715a2ea537f520343651

    • 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