Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-02-2024 08:48

General

  • Target

    2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe

  • Size

    551KB

  • MD5

    a9282aaf372aae86092f21917022850c

  • SHA1

    6d06e70de7c4478da89123dde9c0ea4dfb33c6e3

  • SHA256

    35196a8b628306eff560e2ec0228a51acfc7a232878b233b18de68806e9b55db

  • SHA512

    865bffacbd2bc67476144470165c119674c9b3736187757bba3157cc1f0eeafd747f08b1232aabbf0e1b76afc8e6bf9bdc2f6d5fd5eae7d38540a27e33883708

  • SSDEEP

    12288:dsGmPS60AOrFQANpH5WH9d7W4mBm1wRc/8BThysr8E:dsB2udYBmMbZrT

Malware Config

Extracted

Path

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

Ransom Note
---->hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh<---- 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: 0.0093766 BTC Bitcoin Address: bc1q50rfpqz5qxfulaqj4krv92ue7kzvugl460070j Contact! -Email/ [email protected] -Insta/ @mark_t_er -Telegram/ @haker6657

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 2 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Detects command variations typically used by ransomware 2 IoCs
  • 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 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 2 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 50 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\2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5068
    • 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:2476
      • 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:2668
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:908
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3416
      • 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:3208
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3520
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3808
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3240
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:1944
      • 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:1576
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2288
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1104
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1440
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4908

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      551KB

      MD5

      a9282aaf372aae86092f21917022850c

      SHA1

      6d06e70de7c4478da89123dde9c0ea4dfb33c6e3

      SHA256

      35196a8b628306eff560e2ec0228a51acfc7a232878b233b18de68806e9b55db

      SHA512

      865bffacbd2bc67476144470165c119674c9b3736187757bba3157cc1f0eeafd747f08b1232aabbf0e1b76afc8e6bf9bdc2f6d5fd5eae7d38540a27e33883708

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

      Filesize

      1KB

      MD5

      caaa2593a0c8447ef2db9f9f5061c6a7

      SHA1

      137ceffaf50853f31ec6a99ef48d670af2bb65d5

      SHA256

      1bdb6e764c1bd29926c4a9b596fc4be4a73a37ae07ba03452c50e1c07765c6d9

      SHA512

      fff7ee411ed0e15caa4481df922c07ef30f3723d8814ac6a1972b2b62b06e080d28c3a5459e78eb7d4584c25913c0a3113f970ce4c096cd0563a0ff6deb65557

    • memory/2476-14-0x00007FF984A60000-0x00007FF985521000-memory.dmp

      Filesize

      10.8MB

    • memory/2476-432-0x00007FF984A60000-0x00007FF985521000-memory.dmp

      Filesize

      10.8MB

    • memory/5068-0-0x0000000000350000-0x00000000003E0000-memory.dmp

      Filesize

      576KB

    • memory/5068-1-0x00007FF984A60000-0x00007FF985521000-memory.dmp

      Filesize

      10.8MB

    • memory/5068-15-0x00007FF984A60000-0x00007FF985521000-memory.dmp

      Filesize

      10.8MB