Analysis

  • max time kernel
    149s
  • max time network
    113s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/08/2026, 12:58

General

  • Target
    trojan.exe
  • Size 28KB
  • Sample260805-p7qe4aba26
  • SHA256 6a5fd4c4d2d721c7db3cddc33ad43a7f73803a2f3c6ff2d894759accd49bbb46
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Path
  • C:\Users\Admin\Contacts\read_it.txt

Ransom Note
  • Don't worry, you can recover all your files! All your files, including documents, photos, databases, and other important data, have been encrypted. What guarantees do we provide? You can send up to 3 of your encrypted files, and we will decrypt them for free. You must follow these steps to decrypt your files: 1. Contact us via our OnionMail: [email protected] (If you do not receive a response within 24 hours, check your spam folder). 2. Obtain Bitcoin: You will need to pay $500 USD in Bitcoins for the decryption. After payment is confirmed, we will send you the tool to decrypt all your files. Bitcoin Wallet Address: bc1q3vp3m5dnleszjcwhnzs5gxmcnfx9dfkl8fcny4

Signatures

  • Family: Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Disables Task Manager via registry modification
  • Creates a file in the Startup directory 1 TTPs 2 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 63 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 3 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\trojan.exe
    "C:\Users\Admin\AppData\Local\Temp\trojan.exe"
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2612
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Creates a file in the Startup directory
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops desktop.ini file(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1456
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4248
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4600
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:352
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4740
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:788
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:5516
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:6124
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:5956
      • 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:4352
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3484
  • C:\Users\Admin\AppData\Roaming\svchost.exe
    C:\Users\Admin\AppData\Roaming\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    PID:2972
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2008
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1852
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1960

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          svchost.exe

          • Path C:\Users\Admin\AppData\Roaming\svchost.exe
          • Size 28KB
          • SHA256 6a5fd4c4d2d721c7db3cddc33ad43a7f73803a2f3c6ff2d894759accd49bbb46
          • MD5 SHA1 SHA512 SSDEEP TLSH

          read_it.txt

          • Path C:\Users\Admin\Contacts\read_it.txt
          • Size 727B
          • SHA256 49ce954af86a7413e60a4e398dc0a639c1570e80c618c6cb62096188a06dc3a0
          • MD5 SHA1 SHA512 TLSH

          CompleteRestart.3g2

          • Path C:\Users\Admin\Desktop\CompleteRestart.3g2
          • Size 1B
          • SHA256 8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
          • MD5 SHA1 SHA512

          memory/1456-650-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-652-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-677-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-673-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-670-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-669-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-653-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-662-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-657-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-28-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-641-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-21-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-22-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-23-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-640-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-25-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-646-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-27-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/1456-26-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-9-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-6-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-4-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-24-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-3-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-2-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-10-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-11-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-1-0x00007FF9205EF000-0x00007FF9205F0000-memory.dmp

          memory/2612-12-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-8-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-7-0x00007FF920460000-0x00007FF920E04000-memory.dmp

          memory/2612-0-0x0000000000900000-0x000000000090E000-memory.dmp

          memory/2612-5-0x00007FF920460000-0x00007FF920E04000-memory.dmp