General

  • Target

    Signal6.9.6.exe

  • Size

    114.5MB

  • Sample

    231020-l47y7aba53

  • MD5

    f6d697fd79c8510c929350efffa8543b

  • SHA1

    36f7477cb84c450847d6bf0cc9842228194bf56a

  • SHA256

    99ad30a4c3147042b2929585183736bc1135558c7efb2c5d6bc6c33d850ac301

  • SHA512

    5be24571406c2fc1c7dd3cfabba9e05a1276552dbc3d6fb1488c02c8daea0d46ee7b005f38b67eff67f0ee1c49f7c5fcae0cdc80d1c85a9f38ed81383e89d023

  • SSDEEP

    3145728:VtGIPHBudiuFrz8WWKRx4YcmyDqDkU2inxwMGZJ/w0EhPNn:VxQr1znWKRx4Bm7rxjG7wX

Malware Config

Targets

    • Target

      Signal6.9.6.exe

    • Size

      114.5MB

    • MD5

      f6d697fd79c8510c929350efffa8543b

    • SHA1

      36f7477cb84c450847d6bf0cc9842228194bf56a

    • SHA256

      99ad30a4c3147042b2929585183736bc1135558c7efb2c5d6bc6c33d850ac301

    • SHA512

      5be24571406c2fc1c7dd3cfabba9e05a1276552dbc3d6fb1488c02c8daea0d46ee7b005f38b67eff67f0ee1c49f7c5fcae0cdc80d1c85a9f38ed81383e89d023

    • SSDEEP

      3145728:VtGIPHBudiuFrz8WWKRx4YcmyDqDkU2inxwMGZJ/w0EhPNn:VxQr1znWKRx4Bm7rxjG7wX

    • FatalRat

      FatalRat is a modular infostealer family written in C++ first appearing in June 2021.

    • Gh0st RAT payload

    • Gh0strat

      Gh0st RAT is a remote access tool (RAT) with its source code public and it has been used by multiple Chinese groups.

    • Fatal Rat payload

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

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • UPX packed file

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

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • Adds Run key to start application

    • Enumerates connected drives

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks