Resubmissions

10-03-2023 01:28

230310-bvz7wach4x 8

10-03-2023 01:13

230310-blcp8acg9w 1

General

  • Target

    mmc-cracked-win32.zip

  • Size

    13.5MB

  • Sample

    230310-bvz7wach4x

  • MD5

    cb8b2d008778106e582ffbeac7df226f

  • SHA1

    4b00c864446329f67d1379d9dcc82e4cd4bf56f8

  • SHA256

    8350e7fa81c68169079a043e7d615459c418a1281a8cba0d68db81fab9e530ea

  • SHA512

    b4083cb4c88762067253015e492cc93114b9b37314a7259dd698907f96fadfcf0d7007876d0277899c6452a9cc41f44623364bbd46f7881e39668d5f38916c99

  • SSDEEP

    393216:9nzQW58UL4d5yhkI9vxlsvarbcYp5G4GM73wOoEUwBVBcGUItoE:9nz7Md5QkI/lssbNp5G4xoPOLoE

Malware Config

Targets

    • Target

      mmc-cracked-win32.zip

    • Size

      13.5MB

    • MD5

      cb8b2d008778106e582ffbeac7df226f

    • SHA1

      4b00c864446329f67d1379d9dcc82e4cd4bf56f8

    • SHA256

      8350e7fa81c68169079a043e7d615459c418a1281a8cba0d68db81fab9e530ea

    • SHA512

      b4083cb4c88762067253015e492cc93114b9b37314a7259dd698907f96fadfcf0d7007876d0277899c6452a9cc41f44623364bbd46f7881e39668d5f38916c99

    • SSDEEP

      393216:9nzQW58UL4d5yhkI9vxlsvarbcYp5G4GM73wOoEUwBVBcGUItoE:9nz7Md5QkI/lssbNp5G4xoPOLoE

    • Downloads MZ/PE file

    • Modifies Installed Components in the registry

    • Sets file execution options in registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Registers COM server for autorun

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Checks system information in the registry

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

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

4
T1060

Change Default File Association

1
T1042

Browser Extensions

1
T1176

Defense Evasion

Modify Registry

7
T1112

Discovery

Query Registry

5
T1012

System Information Discovery

4
T1082

Tasks