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Analysis

  • max time kernel
    135s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/06/2023, 19:15

General

  • Target

    f80f4efbba8fd17b87fa5f672340a64beb532fcd10a5ea4a913bc350aadda15c.exe

  • Size

    136KB

  • MD5

    86edc3658df8a67db32fcafb6a1e298f

  • SHA1

    107e53392d6b7b8b24e31cc0aa98a20866a5cce1

  • SHA256

    f80f4efbba8fd17b87fa5f672340a64beb532fcd10a5ea4a913bc350aadda15c

  • SHA512

    44cc40afe5cd10699901c0bb22c0902c2ec096f4ff50e770f6de1d9e558227c845d7fade72ae74f3fac156158286a730d15d908eba36bbc61a36e7d0f74ad79e

  • SSDEEP

    3072:SbsmeDtyVoD8oUnIB5BcyxyvZcMO/6T+:swpyVo4INRAZcR/6T

Malware Config

Signatures

  • FatalRat

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

  • Fatal Rat payload 4 IoCs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f80f4efbba8fd17b87fa5f672340a64beb532fcd10a5ea4a913bc350aadda15c.exe
    "C:\Users\Admin\AppData\Local\Temp\f80f4efbba8fd17b87fa5f672340a64beb532fcd10a5ea4a913bc350aadda15c.exe"
    1⤵
    • Checks computer location settings
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3800
    • C:\ProgramData\Micsoft Windoews\Win Soft.exe
      "C:\ProgramData\Micsoft Windoews\Win Soft.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:796
      • C:\ProgramData\Micsoft Windoews\Win Soft.exe
        "C:\ProgramData\Micsoft Windoews\Win Soft.exe"
        3⤵
        • Executes dropped EXE
        PID:4456

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\Micsoft Windoews\Win Soft.exe

    Filesize

    8.8MB

    MD5

    9068a3d8251716410e5baa7c95db8755

    SHA1

    d92d985a74a27591718ea4fe50eee965823b0ea1

    SHA256

    64b2695097ec03c0c7538389dc46641e0db93cf91f8cc6055dcc8d76637e28e5

    SHA512

    5d56f33340b2ee7bbb39be857d5d4c51e1e0baa460c3941406ec67b473e7556d81fd79ea0730db8abe267a74361a74c84945a8ff6ab891bab20084144167dc80

  • C:\ProgramData\Micsoft Windoews\Win Soft.exe

    Filesize

    8.8MB

    MD5

    9068a3d8251716410e5baa7c95db8755

    SHA1

    d92d985a74a27591718ea4fe50eee965823b0ea1

    SHA256

    64b2695097ec03c0c7538389dc46641e0db93cf91f8cc6055dcc8d76637e28e5

    SHA512

    5d56f33340b2ee7bbb39be857d5d4c51e1e0baa460c3941406ec67b473e7556d81fd79ea0730db8abe267a74361a74c84945a8ff6ab891bab20084144167dc80

  • C:\ProgramData\Micsoft Windoews\Win Soft.exe

    Filesize

    8.8MB

    MD5

    9068a3d8251716410e5baa7c95db8755

    SHA1

    d92d985a74a27591718ea4fe50eee965823b0ea1

    SHA256

    64b2695097ec03c0c7538389dc46641e0db93cf91f8cc6055dcc8d76637e28e5

    SHA512

    5d56f33340b2ee7bbb39be857d5d4c51e1e0baa460c3941406ec67b473e7556d81fd79ea0730db8abe267a74361a74c84945a8ff6ab891bab20084144167dc80

  • C:\ProgramData\Micsoft Windoews\Win Soft.exe

    Filesize

    8.8MB

    MD5

    9068a3d8251716410e5baa7c95db8755

    SHA1

    d92d985a74a27591718ea4fe50eee965823b0ea1

    SHA256

    64b2695097ec03c0c7538389dc46641e0db93cf91f8cc6055dcc8d76637e28e5

    SHA512

    5d56f33340b2ee7bbb39be857d5d4c51e1e0baa460c3941406ec67b473e7556d81fd79ea0730db8abe267a74361a74c84945a8ff6ab891bab20084144167dc80

  • memory/796-161-0x0000000010000000-0x0000000010020000-memory.dmp

    Filesize

    128KB

  • memory/796-165-0x0000000004C50000-0x0000000004C6E000-memory.dmp

    Filesize

    120KB

  • memory/3800-152-0x0000000010000000-0x0000000010020000-memory.dmp

    Filesize

    128KB

  • memory/3800-156-0x0000000003160000-0x000000000317E000-memory.dmp

    Filesize

    120KB