General

  • Target

    JC_a945f87d013f6b70b25cf80ed405f0636d4d2c968079cfd542bd2eda37aba7d1

  • Size

    1.6MB

  • Sample

    230905-wzp8paab8x

  • MD5

    1bcddbf266ca5ead13f8fda22f798fd6

  • SHA1

    a416fc0d6616d02d9032c63e2f1dea351fc356d9

  • SHA256

    a945f87d013f6b70b25cf80ed405f0636d4d2c968079cfd542bd2eda37aba7d1

  • SHA512

    4bee8aa62248c7581349e308bd2861145a9c8a937f0c8a5bfb3c5d0a6952b7227a5d9328600e7349eb8c60f07ae75e695c9c5b0f0b1f56b2bd916417d6abe979

  • SSDEEP

    49152:fjPrzD4vARLDQNZw9vnQ1MSltub4RWfl7RVwO+6N:fDrzD4vA1DQ2gfI4e9VVT

Malware Config

Targets

    • Target

      JC_a945f87d013f6b70b25cf80ed405f0636d4d2c968079cfd542bd2eda37aba7d1

    • Size

      1.6MB

    • MD5

      1bcddbf266ca5ead13f8fda22f798fd6

    • SHA1

      a416fc0d6616d02d9032c63e2f1dea351fc356d9

    • SHA256

      a945f87d013f6b70b25cf80ed405f0636d4d2c968079cfd542bd2eda37aba7d1

    • SHA512

      4bee8aa62248c7581349e308bd2861145a9c8a937f0c8a5bfb3c5d0a6952b7227a5d9328600e7349eb8c60f07ae75e695c9c5b0f0b1f56b2bd916417d6abe979

    • SSDEEP

      49152:fjPrzD4vARLDQNZw9vnQ1MSltub4RWfl7RVwO+6N:fDrzD4vA1DQ2gfI4e9VVT

    • FatalRat

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

    • 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.

    • Adds Run key to start application

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks