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General

  • Target

    CNGB_Installer.exe

  • Size

    36.3MB

  • Sample

    221223-tdtb4sgf72

  • MD5

    9bbbcd32d4d99546d94e6f026501e32a

  • SHA1

    986e306fc79ab6a650cdd516c5e7d97adbbe522a

  • SHA256

    17039d8920c1a6f2302272b784383c4737df7e30adc2b6f42d8cde1be21eba66

  • SHA512

    509e9fc35802415162c123779587d0416f2af4a0911656c21936bad473870df5a29747dcb60e227e2decb29aa38e086e7e7cff19d3237cba89f3dde165c47a18

  • SSDEEP

    786432:YPjHMaI+OxsPtQL1sNyC/dz0Pkf4S87mEFn/GcZkIXK/:Yrl22tAW4qZQ+Utn/GcZJK/

Malware Config

Targets

    • Target

      CNGB_Installer.exe

    • Size

      36.3MB

    • MD5

      9bbbcd32d4d99546d94e6f026501e32a

    • SHA1

      986e306fc79ab6a650cdd516c5e7d97adbbe522a

    • SHA256

      17039d8920c1a6f2302272b784383c4737df7e30adc2b6f42d8cde1be21eba66

    • SHA512

      509e9fc35802415162c123779587d0416f2af4a0911656c21936bad473870df5a29747dcb60e227e2decb29aa38e086e7e7cff19d3237cba89f3dde165c47a18

    • SSDEEP

      786432:YPjHMaI+OxsPtQL1sNyC/dz0Pkf4S87mEFn/GcZkIXK/:Yrl22tAW4qZQ+Utn/GcZJK/

    • Modifies system executable filetype association

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Registers COM server for autorun

    • Checks computer location settings

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

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Checks installed software on the system

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

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v6

Tasks