General

  • Target

    a611c8976de4146d4fdf04a2219aa8e6a72c7039714bb7e4bfca2b503e01db9e

  • Size

    213KB

  • Sample

    220925-feqqqaefbk

  • MD5

    0ef826deb77ebedaaafb9bb5f0915ea0

  • SHA1

    eb181d0ccc26c505013707232621ec75c587fdcc

  • SHA256

    a611c8976de4146d4fdf04a2219aa8e6a72c7039714bb7e4bfca2b503e01db9e

  • SHA512

    cb2e832d1834290fbfb6b5c142edc89f1c35605fbef639e0f6ab4e7874b270ebe4ad9f993123d2c9b4a97f45109c150815ee59f7235efd9348a1f031bb4f9567

  • SSDEEP

    3072:WjW6IU3FgUkzpxHMk5u9IJQjMi9Oqjd2/BdncYqzJiv6D9R0tw2RxHcWjVaD/uMk:VU31k/MCuy69HQ/BNcOv6DbqHFV+t8g

Malware Config

Targets

    • Target

      a611c8976de4146d4fdf04a2219aa8e6a72c7039714bb7e4bfca2b503e01db9e

    • Size

      213KB

    • MD5

      0ef826deb77ebedaaafb9bb5f0915ea0

    • SHA1

      eb181d0ccc26c505013707232621ec75c587fdcc

    • SHA256

      a611c8976de4146d4fdf04a2219aa8e6a72c7039714bb7e4bfca2b503e01db9e

    • SHA512

      cb2e832d1834290fbfb6b5c142edc89f1c35605fbef639e0f6ab4e7874b270ebe4ad9f993123d2c9b4a97f45109c150815ee59f7235efd9348a1f031bb4f9567

    • SSDEEP

      3072:WjW6IU3FgUkzpxHMk5u9IJQjMi9Oqjd2/BdncYqzJiv6D9R0tw2RxHcWjVaD/uMk:VU31k/MCuy69HQ/BNcOv6DbqHFV+t8g

    • 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

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Stops running service(s)

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Identifies Wine through registry keys

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

    • 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

1
T1112

Virtualization/Sandbox Evasion

2
T1497

Impair Defenses

1
T1562

Discovery

Query Registry

3
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Impact

Service Stop

1
T1489

Tasks