General

  • Target

    Secured.rar

  • Size

    739KB

  • Sample

    240425-mz8klaaa8t

  • MD5

    ef56c7500fa4341f60af74e8d81022c4

  • SHA1

    67e072fa9cf296e4e2547e167444e3d667df9918

  • SHA256

    a7720638aee803b36ede0135b593d476a86706174e2b2657975cc631e4368ff2

  • SHA512

    90c8aa0b9b8b4faa52d300d24976f31d1285d3dfed446416d7da442b192264ead3ab97e64edb100df0b560b6dcd01f66671d24be3587bda3fef98d1b5d034eb9

  • SSDEEP

    12288:YqlwtcEQtnhBQN8ud/p17/B2DpjJ92Ycp8oYuZUWqB265UlktJ02Algzre2Vlx8T:3+iEWnhBMTvjB2DpjzQ9UWCUkX8F27xC

Malware Config

Targets

    • Target

      Secured.rar

    • Size

      739KB

    • MD5

      ef56c7500fa4341f60af74e8d81022c4

    • SHA1

      67e072fa9cf296e4e2547e167444e3d667df9918

    • SHA256

      a7720638aee803b36ede0135b593d476a86706174e2b2657975cc631e4368ff2

    • SHA512

      90c8aa0b9b8b4faa52d300d24976f31d1285d3dfed446416d7da442b192264ead3ab97e64edb100df0b560b6dcd01f66671d24be3587bda3fef98d1b5d034eb9

    • SSDEEP

      12288:YqlwtcEQtnhBQN8ud/p17/B2DpjJ92Ycp8oYuZUWqB265UlktJ02Algzre2Vlx8T:3+iEWnhBMTvjB2DpjzQ9UWCUkX8F27xC

    • Looks for VirtualBox Guest Additions in registry

    • Downloads MZ/PE file

    • Looks for VMWare Tools registry key

    • Sets service image path in registry

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Maps connected drives based on registry

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

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Modify Registry

1
T1112

Impair Defenses

1
T1562

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Impact

Service Stop

1
T1489

Tasks