Analysis

  • max time kernel
    149s
  • max time network
    149s
  • 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, 15:51

General

  • Target
    trojan.exe
  • Size 28KB
  • Sample260805-tapjrabp6z
  • SHA256 36b0a638d305307531123022f31651fc5c1d99524e925721d20f8d089104fc45
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Path
  • C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\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:3360
    • 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:2116
      • 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:5804
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1148
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:240
      • 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:5772
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2296
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4992
      • 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:4276
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:5372
      • 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:1444
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4356
  • C:\Users\Admin\AppData\Roaming\svchost.exe
    C:\Users\Admin\AppData\Roaming\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1092
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1296
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:5692
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3252

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          read_it.txt

          • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\read_it.txt
          • Size 727B
          • SHA256 49ce954af86a7413e60a4e398dc0a639c1570e80c618c6cb62096188a06dc3a0
          • MD5 SHA1 SHA512 TLSH

          svchost.exe

          • Path C:\Users\Admin\AppData\Roaming\svchost.exe
          • Size 28KB
          • SHA256 36b0a638d305307531123022f31651fc5c1d99524e925721d20f8d089104fc45
          • MD5 SHA1 SHA512 SSDEEP TLSH

          DismountRemove.xls

          • Path C:\Users\Admin\Desktop\DismountRemove.xls
          • Size 1B
          • SHA256 8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
          • MD5 SHA1 SHA512

          memory/2116-570-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-578-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-32-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-619-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-614-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-607-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-603-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-602-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-596-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-594-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-587-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-580-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-577-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-30-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-24-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-25-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-26-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-27-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-28-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-29-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-565-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-31-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-36-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-33-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-34-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/2116-35-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-13-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-14-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-1-0x00007FFEB9E9F000-0x00007FFEB9EA0000-memory.dmp

          memory/3360-4-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-0-0x00000000008F0000-0x00000000008FE000-memory.dmp

          memory/3360-23-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-2-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-3-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-12-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-5-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-11-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-10-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-9-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-8-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-7-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp

          memory/3360-6-0x00007FFEB9D10000-0x00007FFEBA6B4000-memory.dmp