General

  • Target

    71a74b0cc82521e18e40a75ca9cdac14136836391919188fc221ff449aaa15cd

  • Size

    498KB

  • Sample

    221029-ja57dsffd5

  • MD5

    a55e740e2bbda525bdacdd8fa322560c

  • SHA1

    1d202e3cf8da49d9c78d6b4e9c06f19b0131d1e1

  • SHA256

    71a74b0cc82521e18e40a75ca9cdac14136836391919188fc221ff449aaa15cd

  • SHA512

    81169be86696b387338c498cfb378e092d535933526e20f6747baeff58218f06b2d6b2dd122d96a8efd31038e5016321334a3db2dcf4bb8e8438ffa23179c819

  • SSDEEP

    12288:FJMBtobFzlRqmtEbkFPa05SE7pEPoTkwL3sgYZ4ec44hUzWVbeQygtcjES:FJdvRAEeeecJ1Btcjf

Malware Config

Targets

    • Target

      71a74b0cc82521e18e40a75ca9cdac14136836391919188fc221ff449aaa15cd

    • Size

      498KB

    • MD5

      a55e740e2bbda525bdacdd8fa322560c

    • SHA1

      1d202e3cf8da49d9c78d6b4e9c06f19b0131d1e1

    • SHA256

      71a74b0cc82521e18e40a75ca9cdac14136836391919188fc221ff449aaa15cd

    • SHA512

      81169be86696b387338c498cfb378e092d535933526e20f6747baeff58218f06b2d6b2dd122d96a8efd31038e5016321334a3db2dcf4bb8e8438ffa23179c819

    • SSDEEP

      12288:FJMBtobFzlRqmtEbkFPa05SE7pEPoTkwL3sgYZ4ec44hUzWVbeQygtcjES:FJdvRAEeeecJ1Btcjf

    • Cobaltstrike

      Detected malicious payload which is part of Cobaltstrike.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Registers COM server for autorun

    • Sets file execution options in registry

    • Sets service image path in registry

    • UPX packed file

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

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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.

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v6

Tasks