Analysis

  • max time kernel
    104s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/03/2025, 04:25

General

  • Target

    2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe

  • Size

    22KB

  • MD5

    3844f4425e6c8080d98a8e393be64321

  • SHA1

    d028d8531fb246c75af144856822baefdaf1e49d

  • SHA256

    eefef45e9535ca06d46c179e6a6b757b0a0400adf65d33bbc436128e61613a21

  • SHA512

    884c84943799d42dbd22521cad43f9bb26aba9072a3d33115b0b723dcf453a25b5983ec2838efcdd1c073c7c334944d239c94fb99c3951a8090b8708e31ffc1e

  • SSDEEP

    384:J3MLWHn3kIeoLF4+BlpFD4+CTJVr91CzEbLLe6:pn3kIhe+7pN4+6Vr9iEbfe6

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Chaos family
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Drops desktop.ini file(s) 34 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 47 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-03-23_3844f4425e6c8080d98a8e393be64321_chaos_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Users\Admin\AppData\Roaming\setup.exe
      "C:\Users\Admin\AppData\Roaming\setup.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4616
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:5548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\setup.exe

    Filesize

    22KB

    MD5

    3844f4425e6c8080d98a8e393be64321

    SHA1

    d028d8531fb246c75af144856822baefdaf1e49d

    SHA256

    eefef45e9535ca06d46c179e6a6b757b0a0400adf65d33bbc436128e61613a21

    SHA512

    884c84943799d42dbd22521cad43f9bb26aba9072a3d33115b0b723dcf453a25b5983ec2838efcdd1c073c7c334944d239c94fb99c3951a8090b8708e31ffc1e

  • C:\Users\Admin\Desktop\read_it.txt

    Filesize

    952B

    MD5

    ce4ac7c8ce403fed9d431f141f78477e

    SHA1

    ce15b205a69ac0a4b57437b2c4878fa12cf90567

    SHA256

    6da207a510ca233577bf0bd830d3971c72eb2250bb8d4c148817e12e58efed21

    SHA512

    31a3ec0f2cb0b076d0730b7d841aba5ae5296d6e3bb9fb81cf6438a7619cfca755a8e3dff8b436aad52bebd40866bbfce371518da5575d1f817c99b2c62f6438

  • memory/2220-0-0x00007FFF07353000-0x00007FFF07355000-memory.dmp

    Filesize

    8KB

  • memory/2220-1-0x0000000000A40000-0x0000000000A4C000-memory.dmp

    Filesize

    48KB

  • memory/4616-14-0x00007FFF07350000-0x00007FFF07E11000-memory.dmp

    Filesize

    10.8MB

  • memory/4616-68-0x00007FFF07350000-0x00007FFF07E11000-memory.dmp

    Filesize

    10.8MB

  • memory/4616-70-0x00007FFF07350000-0x00007FFF07E11000-memory.dmp

    Filesize

    10.8MB