Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-08-2024 18:26

General

  • Target

    2024-08-22_f0ffaa2a2b86db3f9e4141d61da80604_wannacry.exe

  • Size

    168KB

  • MD5

    f0ffaa2a2b86db3f9e4141d61da80604

  • SHA1

    e9ce0c50a6b7f15b440fb5b45aa3d9e8e23cfb8f

  • SHA256

    6c49fdaea11c987e62bfe88d3f4b7e88652662a253a4df4321d319f559a1562b

  • SHA512

    f0d9876ce1b5a174ec0db4148fca9909a2fc912d9db1551e302957fc6f2ccb1a3cfbcd5358a20f635088f5742a681edf2d002f07db2ea36d690f0f443900ed0f

  • SSDEEP

    1536:leKebU6b0RgzZ8+1oqDAYkjeNY+RchBuwl/lrY0/x4GWB+Zi++VIMDFr9LAID8A:leKePQRgZFbJchBuihsZVRDFr9kID8A

Malware Config

Extracted

Path

C:\Users\Admin\Documents\read_it.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 $1,500. 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: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0

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.

  • 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
  • Loads dropped DLL 2 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 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 53 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\2024-08-22_f0ffaa2a2b86db3f9e4141d61da80604_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-08-22_f0ffaa2a2b86db3f9e4141d61da80604_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4380
    • 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
      • Loads dropped DLL
      • Drops desktop.ini file(s)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3876
      • 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:1700
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:5096
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4544
      • 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:220
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4816
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4284
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4972
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2324
      • 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:3468
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4352
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3408
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4732
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3568

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\Runtime.MSIL.1.0.0.0\sByte.dll

      Filesize

      39KB

      MD5

      d80d1b6d9a6d5986fa47f6f8487030e1

      SHA1

      8f5773bf9eca43b079c1766b2e9f44cc90bd9215

      SHA256

      446128f1712da8064d0197376184315cb529ed26ed9122f7b171bb208e22c0c3

      SHA512

      9fcf0105c2c9ee81c526d41633d93579bb8e2837989d77fb4a6523440415ec2d7fa46ac9ae4e55ecebd99126837817ac308cc079475de02667b21727a43d74cc

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

      Filesize

      168KB

      MD5

      f0ffaa2a2b86db3f9e4141d61da80604

      SHA1

      e9ce0c50a6b7f15b440fb5b45aa3d9e8e23cfb8f

      SHA256

      6c49fdaea11c987e62bfe88d3f4b7e88652662a253a4df4321d319f559a1562b

      SHA512

      f0d9876ce1b5a174ec0db4148fca9909a2fc912d9db1551e302957fc6f2ccb1a3cfbcd5358a20f635088f5742a681edf2d002f07db2ea36d690f0f443900ed0f

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

      Filesize

      964B

      MD5

      4217b8b83ce3c3f70029a056546f8fd0

      SHA1

      487cdb5733d073a0427418888e8f7070fe782a03

      SHA256

      7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

      SHA512

      2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

    • memory/3876-22-0x00007FFDC93D0000-0x00007FFDC9E91000-memory.dmp

      Filesize

      10.8MB

    • memory/3876-455-0x00007FFDC93D0000-0x00007FFDC9E91000-memory.dmp

      Filesize

      10.8MB

    • memory/4380-0-0x00007FFDC93D3000-0x00007FFDC93D5000-memory.dmp

      Filesize

      8KB

    • memory/4380-1-0x0000000000240000-0x0000000000270000-memory.dmp

      Filesize

      192KB

    • memory/4380-2-0x0000000000A10000-0x0000000000A1C000-memory.dmp

      Filesize

      48KB

    • memory/4380-6-0x00007FFDC93D0000-0x00007FFDC9E91000-memory.dmp

      Filesize

      10.8MB

    • memory/4380-21-0x00007FFDC93D0000-0x00007FFDC9E91000-memory.dmp

      Filesize

      10.8MB