General

  • Target

    8c8a3e642b00f27e639ba7feb83a33e11e66ea5f4ecee08f589cc7774c7db154

  • Size

    3.8MB

  • Sample

    220811-16cy6afdf9

  • MD5

    debb7adbe78865c8950deb98364378f6

  • SHA1

    f705f91f018d64d135193115044f8e838c34f869

  • SHA256

    8c8a3e642b00f27e639ba7feb83a33e11e66ea5f4ecee08f589cc7774c7db154

  • SHA512

    719427e6b19f63f9d1175c7a3765cc4c9aa61af041f2f4699b2498ec6fb540928a903bf2f6c1dd88fa3ad420e5823d52212c3d5374d15a4dea4f04dbb34bdfde

Malware Config

Targets

    • Target

      8c8a3e642b00f27e639ba7feb83a33e11e66ea5f4ecee08f589cc7774c7db154

    • Size

      3.8MB

    • MD5

      debb7adbe78865c8950deb98364378f6

    • SHA1

      f705f91f018d64d135193115044f8e838c34f869

    • SHA256

      8c8a3e642b00f27e639ba7feb83a33e11e66ea5f4ecee08f589cc7774c7db154

    • SHA512

      719427e6b19f63f9d1175c7a3765cc4c9aa61af041f2f4699b2498ec6fb540928a903bf2f6c1dd88fa3ad420e5823d52212c3d5374d15a4dea4f04dbb34bdfde

    • Modifies security service

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Checks BIOS information in registry

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

    • Drops startup file

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

2
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

3
T1112

Virtualization/Sandbox Evasion

1
T1497

Install Root Certificate

1
T1130

Discovery

Query Registry

2
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

3
T1082

Command and Control

Web Service

1
T1102

Tasks