Analysis

  • max time kernel
    93s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-11-2024 02:07

General

  • Target

    2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe

  • Size

    644KB

  • MD5

    b898f3c309d4e2a25076c6a0fac476e8

  • SHA1

    51bfd7cd070ea897ad4d12d2e068511eeb226372

  • SHA256

    c01d10403bbb88f5106051ff41c0969bea0a589c75f1774ee2e42a76708c1ba3

  • SHA512

    dcaab5312d7183651e834aeb7e5f7c20a999f24379d44c35305c74e8e9e53611f11d0ca4f59b91277501510398c80b49aacb252454e9a074a02d0ae59f836681

  • SSDEEP

    12288:U0SZy1zq9E8aaKIgYLpanJhT5CKaL8jVVCy+9pLvh5dSsRiId7X+l4qrB9Brk3y3:HWEBqjJ5tqlR

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 $8,000. 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: 0.09 BTC Bitcoin Address: bc1q239s2dve6uwchxwwhuy89zgc7zlaj7fyl6cy3e After payment Send email to ([email protected])

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
  • 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
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 49 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 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\2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3652
    • 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)
      • Sets desktop wallpaper using registry
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5052
      • 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:4980
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1696
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4436
      • 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:4188
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:612
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4652
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:464
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:5108
      • 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:3396
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:3772
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4664
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:3900
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:1568

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        644KB

        MD5

        b898f3c309d4e2a25076c6a0fac476e8

        SHA1

        51bfd7cd070ea897ad4d12d2e068511eeb226372

        SHA256

        c01d10403bbb88f5106051ff41c0969bea0a589c75f1774ee2e42a76708c1ba3

        SHA512

        dcaab5312d7183651e834aeb7e5f7c20a999f24379d44c35305c74e8e9e53611f11d0ca4f59b91277501510398c80b49aacb252454e9a074a02d0ae59f836681

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

        Filesize

        1006B

        MD5

        b7b332bf7b22a4e24f58e52d9516f07d

        SHA1

        1feb5fc581cdcc602efd11bb27e270db1d74a739

        SHA256

        3d52695838d8dfac2d1e65ff876efd8e9d11dcbab07630eaf1a8313548d885b2

        SHA512

        d1581b29654b625c4887d4d9a6eb733354870f2da77e7abbdcb77c6caed4ba1cb64f3c873a9034769181aa4f5d07606231b20d829c28df4f282dd280cd71ce4d

      • memory/3652-0-0x00007FFD41BF3000-0x00007FFD41BF5000-memory.dmp

        Filesize

        8KB

      • memory/3652-1-0x0000000000690000-0x0000000000736000-memory.dmp

        Filesize

        664KB

      • memory/5052-14-0x00007FFD41BF0000-0x00007FFD426B1000-memory.dmp

        Filesize

        10.8MB

      • memory/5052-458-0x00007FFD41BF0000-0x00007FFD426B1000-memory.dmp

        Filesize

        10.8MB