Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-05-2024 02:44

General

  • Target

    2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe

  • Size

    22KB

  • MD5

    d4669c94a097854dce4884b30969263a

  • SHA1

    beaef0dae9832bc5f4406140629d952d90bcad3c

  • SHA256

    64d0b1b9e3bcae016bb2a2cbf1ba0fe05a0f1e3853bda1dd58adda14a5cf2544

  • SHA512

    a7f51b4100c29beac1eef99b88dcbac2fc5e961b7e9da7ef2fc754db5bf1d50c0eb9e1f6a6e72869a782fe62335178ae09f39857517a1cd9f1d83b9bebeed523

  • SSDEEP

    384:23MLWHn3kIk/IqoIApcXsQP8GdtKXRIJRr91CzJb6kem:6n3kIMLApcNPfKXRARr9iJbpem

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\howtouninstall.txt

Family

chaos

Ransom Note
----> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help.What can I do to get my files back?You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $100. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.000014 BTC Bitcoin Address: 12mNn7mCFptRZynEfLA2mEowHYsPYhYVKZ
Wallets

12mNn7mCFptRZynEfLA2mEowHYsPYhYVKZ

Signatures

  • 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.

  • Detects command variations typically used by ransomware 2 IoCs
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • 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 2 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).

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

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

  • Interacts with shadow copies 2 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 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 47 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 20 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\2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_d4669c94a097854dce4884b30969263a_chaos_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:220
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.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:2900
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3628
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:448
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3680
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4480
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:716
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1780
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4332
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:3600
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\howtouninstall.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:1200
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3784
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2732
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2512
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3904

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Windows Management Instrumentation

    1
    T1047

    Command and Scripting Interpreter

    1
    T1059

    Defense Evasion

    Indicator Removal

    3
    T1070

    File Deletion

    3
    T1070.004

    Credential Access

    Unsecured Credentials

    1
    T1552

    Credentials In Files

    1
    T1552.001

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Peripheral Device Discovery

    1
    T1120

    Collection

    Data from Local System

    1
    T1005

    Impact

    Inhibit System Recovery

    4
    T1490

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\svchost.exe
      Filesize

      22KB

      MD5

      d4669c94a097854dce4884b30969263a

      SHA1

      beaef0dae9832bc5f4406140629d952d90bcad3c

      SHA256

      64d0b1b9e3bcae016bb2a2cbf1ba0fe05a0f1e3853bda1dd58adda14a5cf2544

      SHA512

      a7f51b4100c29beac1eef99b88dcbac2fc5e961b7e9da7ef2fc754db5bf1d50c0eb9e1f6a6e72869a782fe62335178ae09f39857517a1cd9f1d83b9bebeed523

    • C:\Users\Admin\Desktop\howtouninstall.txt
      Filesize

      955B

      MD5

      79f37ebbd9fad4e2219563953c94d152

      SHA1

      87a362ff8fe4240d4031366277ac2d8a3f51c184

      SHA256

      bdba644092aa5efb03249e8306d4117cb615a286acf46ccfdd382f867f3d56b6

      SHA512

      da3512e9e77f6f088394fa5a6153b38d0bd7dab87f027023b9718b3e11d915f7a497e1b491f699eeadbbbb2a8f105d111b6898b3b514986221ba551614fc2fd7

    • memory/220-0-0x00007FFAEE693000-0x00007FFAEE695000-memory.dmp
      Filesize

      8KB

    • memory/220-1-0x0000000000C50000-0x0000000000C5C000-memory.dmp
      Filesize

      48KB

    • memory/2900-14-0x00007FFAEE690000-0x00007FFAEF151000-memory.dmp
      Filesize

      10.8MB

    • memory/2900-70-0x00007FFAEE690000-0x00007FFAEF151000-memory.dmp
      Filesize

      10.8MB