Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-07-2024 05:00

General

  • Target

    2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe

  • Size

    5.0MB

  • MD5

    70b000a4afb6cd659c70068ae9a8da4e

  • SHA1

    8e9f0c75ba7f08932aab4aac86ee33340314d879

  • SHA256

    e788b672c860e6088ddb0b042675f3ce2999bef473479598108896ffbb916bea

  • SHA512

    f40aae321ecde244521177d7d6a5127592c3e64c6babc27952464344e8c4f4f5449be8984c2ddb69ab6955b4537c2c717a968317b317d528f5f0d3861de61854

  • SSDEEP

    24576:xGNDuv4+PU64AoPrWdbb5+HRBlwOdXlI1y2Y5LwUMlx3IXVjUlRnua/OZuNG12Ho:ayyaQHzN9eOR2Rnu2GBcH56F2u0

Malware Config

Extracted

Path

C:\Users\Admin\Documents\read me.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
  • Renames multiple (192) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • 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
  • Sets desktop wallpaper using registry 2 TTPs 1 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 45 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\2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-07-11_70b000a4afb6cd659c70068ae9a8da4e_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4860
    • C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
      "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4108
      • 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:2132
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2464
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3868
      • 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:2184
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3876
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3492
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1724
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4828
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read me.txt
        3⤵
          PID:920
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2332
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4372
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:392
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:1512

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Roaming\Runtime Broker.exe

        Filesize

        5.0MB

        MD5

        70b000a4afb6cd659c70068ae9a8da4e

        SHA1

        8e9f0c75ba7f08932aab4aac86ee33340314d879

        SHA256

        e788b672c860e6088ddb0b042675f3ce2999bef473479598108896ffbb916bea

        SHA512

        f40aae321ecde244521177d7d6a5127592c3e64c6babc27952464344e8c4f4f5449be8984c2ddb69ab6955b4537c2c717a968317b317d528f5f0d3861de61854

      • C:\Users\Admin\Documents\read me.txt

        Filesize

        964B

        MD5

        4217b8b83ce3c3f70029a056546f8fd0

        SHA1

        487cdb5733d073a0427418888e8f7070fe782a03

        SHA256

        7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121

        SHA512

        2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740

      • memory/4108-14-0x00007FFFA30F0000-0x00007FFFA3BB1000-memory.dmp

        Filesize

        10.8MB

      • memory/4108-22-0x00007FFFA30F0000-0x00007FFFA3BB1000-memory.dmp

        Filesize

        10.8MB

      • memory/4108-452-0x00007FFFA30F0000-0x00007FFFA3BB1000-memory.dmp

        Filesize

        10.8MB

      • memory/4860-0-0x00007FFFA30F3000-0x00007FFFA30F5000-memory.dmp

        Filesize

        8KB

      • memory/4860-1-0x00000000004F0000-0x00000000009F4000-memory.dmp

        Filesize

        5.0MB