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Analysis

  • max time kernel
    121s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02/02/2025, 04:22

General

  • Target

    2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe

  • Size

    195KB

  • MD5

    3a6dcb521541f45851833615856452e1

  • SHA1

    43e7ae516237531c22cd69b7ca37a0ff39e9488e

  • SHA256

    f6dfe2824f24d1daad9d072df9e74f667510f1c22f98b887357010d0fded3a6c

  • SHA512

    e6a43be34cb421843b9ac31b2b5f21d2d2f96e16810de93dd0fa189a7bb4333bae5ffb94e5929b2a409b51147a4c2d9511814fd2af8186c88ce5a77eff700430

  • SSDEEP

    3072:woRNeWr98RskBc93hxfkB+7kjCGX8q1qz2/HuHZZ57/Euv8RnNaO:rnr98RI8sAwxWHaEi

Malware Config

Extracted

Path

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

Ransom Note
HA HA HA, Revenge of Heisenberg!!! 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 $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: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9aa

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 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.

  • 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
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of WriteProcessMemory 30 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\2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-02-02_3a6dcb521541f45851833615856452e1_wannacry.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Sets desktop wallpaper using registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2992
      • 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:2288
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:2192
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:740
      • 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:1384
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:624
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3028
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1304
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2296
      • 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:1604
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2076
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2376
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:756
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
        PID:1264

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        195KB

        MD5

        3a6dcb521541f45851833615856452e1

        SHA1

        43e7ae516237531c22cd69b7ca37a0ff39e9488e

        SHA256

        f6dfe2824f24d1daad9d072df9e74f667510f1c22f98b887357010d0fded3a6c

        SHA512

        e6a43be34cb421843b9ac31b2b5f21d2d2f96e16810de93dd0fa189a7bb4333bae5ffb94e5929b2a409b51147a4c2d9511814fd2af8186c88ce5a77eff700430

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

        Filesize

        913B

        MD5

        ed0389d2c63d4de9b414924025c4b669

        SHA1

        2572880a7ce991d4a360f5f9f3c91c8efcd6af61

        SHA256

        58d7086d971c5d952696e412f07e0a5131af143f2e996b6cb9adf4ef1aeb80ae

        SHA512

        0b6392ed883ce5d3d995ccd48430d4c494ac847a86c4f20f7e2e47c9708170690cdc0d5d569f5c7c8d90baf6ea1f0295a83eeb802e5f03442d716f41c9965a95

      • memory/1880-0-0x000007FEF55E3000-0x000007FEF55E4000-memory.dmp

        Filesize

        4KB

      • memory/1880-1-0x00000000013C0000-0x00000000013F8000-memory.dmp

        Filesize

        224KB

      • memory/1880-2-0x000007FEF55E3000-0x000007FEF55E4000-memory.dmp

        Filesize

        4KB

      • memory/2992-8-0x00000000013D0000-0x0000000001408000-memory.dmp

        Filesize

        224KB

      • memory/2992-9-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

        Filesize

        9.9MB

      • memory/2992-11-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

        Filesize

        9.9MB

      • memory/2992-527-0x000007FEF55E0000-0x000007FEF5FCC000-memory.dmp

        Filesize

        9.9MB