General

  • Target

    be9b68f7a86482bc6d22c05724b671ddeb8fd12f764ea7ed34087ac04b253266

  • Size

    7.5MB

  • Sample

    220702-19e8pacce9

  • MD5

    a29f3494661a52e3c66a2908389c5010

  • SHA1

    1645351e4b00a678ad7c4ac7784bf8d9c8703297

  • SHA256

    be9b68f7a86482bc6d22c05724b671ddeb8fd12f764ea7ed34087ac04b253266

  • SHA512

    1b1314867540a94f60a7075c9021981ede269fda29411eba9b9ed33790010c0f836235c27938eccb5d592cb552d283cdf39ddaf9d28ab3d4d252ba82ada8e25e

Malware Config

Targets

    • Target

      be9b68f7a86482bc6d22c05724b671ddeb8fd12f764ea7ed34087ac04b253266

    • Size

      7.5MB

    • MD5

      a29f3494661a52e3c66a2908389c5010

    • SHA1

      1645351e4b00a678ad7c4ac7784bf8d9c8703297

    • SHA256

      be9b68f7a86482bc6d22c05724b671ddeb8fd12f764ea7ed34087ac04b253266

    • SHA512

      1b1314867540a94f60a7075c9021981ede269fda29411eba9b9ed33790010c0f836235c27938eccb5d592cb552d283cdf39ddaf9d28ab3d4d252ba82ada8e25e

    • 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