Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-04-2024 13:17

General

  • Target

    2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe

  • Size

    46KB

  • MD5

    e9b220e484d0526c883000011902314b

  • SHA1

    0fd828b30b82decd203e580d54591a39b41c6795

  • SHA256

    29fd8c24e498db51eaf961e3f2a5702f50b3b60892979d9eee14c5cde35fdfdb

  • SHA512

    f65b510f24fa044361392c0b15bf985b94134969de65533fa3070e0dfb2a25fa789561babf9e477750030247b1e54d9fe98b4c19322c1d5f735458d52900d575

  • SSDEEP

    768:jqo2YOpYxQ9r9Wu9F8eXbwUpQYzF/VtH0NVHD7lxwp1Eev7H8l/uwee8:Oo2YpQ9r9Wu9pz9H0fjaEgHEn8

Malware Config

Extracted

Path

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

Ransom Note
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.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 $1m. Payment can be made in Bitcoin only. Payment information: 15.34 BTC Bitcoin Address: bc1qlnzcep423

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 51 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\2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-22_e9b220e484d0526c883000011902314b_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4344
    • 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:2172
      • 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:1592
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1452
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3668
      • 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:3036
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1608
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4388
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3504
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:4728
      • 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:3792
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2292
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3868
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:4948
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4024

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      46KB

      MD5

      e9b220e484d0526c883000011902314b

      SHA1

      0fd828b30b82decd203e580d54591a39b41c6795

      SHA256

      29fd8c24e498db51eaf961e3f2a5702f50b3b60892979d9eee14c5cde35fdfdb

      SHA512

      f65b510f24fa044361392c0b15bf985b94134969de65533fa3070e0dfb2a25fa789561babf9e477750030247b1e54d9fe98b4c19322c1d5f735458d52900d575

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

      Filesize

      475B

      MD5

      17ed41ce9a398617004e0240a9c2e602

      SHA1

      b2b10f2535d1db228c25c89317baa439f9584184

      SHA256

      ecee28979cf62e27980a26d8feca32cb961e8b61a516705c677d96166fd3b912

      SHA512

      ec1d61e42e32eed3a3069490fb4dd171165a5f35aa9015ec5f06f1dd1d85648dc969c81fb050cfc56d20f6a6e67a5be58b2d7cb20f2dba8f9af9a7f486077de0

    • memory/2172-15-0x00007FFCF4210000-0x00007FFCF4CD1000-memory.dmp

      Filesize

      10.8MB

    • memory/2172-445-0x00007FFCF4210000-0x00007FFCF4CD1000-memory.dmp

      Filesize

      10.8MB

    • memory/4344-0-0x0000000000CC0000-0x0000000000CD2000-memory.dmp

      Filesize

      72KB

    • memory/4344-1-0x00007FFCF4210000-0x00007FFCF4CD1000-memory.dmp

      Filesize

      10.8MB

    • memory/4344-14-0x00007FFCF4210000-0x00007FFCF4CD1000-memory.dmp

      Filesize

      10.8MB