Analysis

  • max time kernel
    94s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2024 17:21

General

  • Target

    2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe

  • Size

    22KB

  • MD5

    81da4689d58474d5628687d0c0f80247

  • SHA1

    e665e68f8f5525891a1f80f1e11005a9791747c3

  • SHA256

    bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b

  • SHA512

    40dfe5b0160af540c0773d30d6a4cca6f8fdb5e76bf03b706edbb8d1e597b46847594802ab82743cb21298751333f590163ade9a9b23f34b1ce9aa0a994ad04f

  • SSDEEP

    384:c3MLWHn3kI3fbLR5LZrdpRVgjudJ6r91Crxb1tQeP:0n3kIzt9tdpRmj+6r9SxbkeP

Malware Config

Extracted

Path

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

Ransom Note
----> Translate your note to any language <---- All of your files have been encrypted Your computer was Fucked. 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. 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: 0,0012 BTC Bitcoin Address: 1MCrfrWne7m1KLysxkoUv617djCB3y9ZjZ
Wallets

1MCrfrWne7m1KLysxkoUv617djCB3y9ZjZ

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Chaos family
  • 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.

  • 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).

  • 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 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 49 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\2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5056
    • 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:1920
      • 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:4704
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3496
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4700
      • 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:4108
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:2284
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1968
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4020
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4572
      • 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:4192
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1816
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4272
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:2848
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3716

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      22KB

      MD5

      81da4689d58474d5628687d0c0f80247

      SHA1

      e665e68f8f5525891a1f80f1e11005a9791747c3

      SHA256

      bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b

      SHA512

      40dfe5b0160af540c0773d30d6a4cca6f8fdb5e76bf03b706edbb8d1e597b46847594802ab82743cb21298751333f590163ade9a9b23f34b1ce9aa0a994ad04f

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

      Filesize

      854B

      MD5

      30dbd9beaecba46ffb68b2ba7167542c

      SHA1

      403bbce281174af6acf794be6b5cd83e864ba42a

      SHA256

      7c72579a3d1e9c78e0385c6ceb96e54411b5be12e5eb9b9386878c6356d8a506

      SHA512

      71f9036e9b637ddb8c1025f5df0a8c631bfb13823ab4c3f70b8b1d854610ab1053d0a15cacee2f84e93ad21428e3dbe34fe294ebbaed8939c2e5549526a5d920

    • memory/1920-14-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

      Filesize

      10.8MB

    • memory/1920-70-0x00007FFBD2920000-0x00007FFBD33E1000-memory.dmp

      Filesize

      10.8MB

    • memory/5056-0-0x00007FFBD2923000-0x00007FFBD2925000-memory.dmp

      Filesize

      8KB

    • memory/5056-1-0x0000000000130000-0x000000000013C000-memory.dmp

      Filesize

      48KB