General

  • Target

    020f7adf3af6a01c6ba76cad87819ff2f423eb95e28fb5d214e8a01429df9a92

  • Size

    8.5MB

  • Sample

    220523-t6jndaaddj

  • MD5

    6698911c5b06dd1396471dd8633456a8

  • SHA1

    2528e917014f2476534b4c9f584878d071384f92

  • SHA256

    020f7adf3af6a01c6ba76cad87819ff2f423eb95e28fb5d214e8a01429df9a92

  • SHA512

    6e796cb625f7084a5d363062533602aab1791cd6229866531f717c715897765727e90869301228ff865c7c8ebabab29617a86771ad54c9688fd9b4514f924dab

Malware Config

Targets

    • Target

      020f7adf3af6a01c6ba76cad87819ff2f423eb95e28fb5d214e8a01429df9a92

    • Size

      8.5MB

    • MD5

      6698911c5b06dd1396471dd8633456a8

    • SHA1

      2528e917014f2476534b4c9f584878d071384f92

    • SHA256

      020f7adf3af6a01c6ba76cad87819ff2f423eb95e28fb5d214e8a01429df9a92

    • SHA512

      6e796cb625f7084a5d363062533602aab1791cd6229866531f717c715897765727e90869301228ff865c7c8ebabab29617a86771ad54c9688fd9b4514f924dab

    • Modifies WinLogon for persistence

    • xmrig

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

    • Detected Stratum cryptominer command

      Looks to be attempting to contact Stratum mining pool.

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

    • XMRig Miner Payload

    • Creates new service(s)

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Winlogon Helper DLL

1
T1004

New Service

1
T1050

Scheduled Task

1
T1053

Privilege Escalation

New Service

1
T1050

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Virtualization/Sandbox Evasion

2
T1497

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

2
T1082

Network Service Scanning

1
T1046

Tasks