Analysis

  • max time kernel
    104s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/03/2025, 10:03

General

  • Target

    2025-03-24_04ce8e7391c4af9e1d6182dbac561586_wannacry.exe

  • Size

    927KB

  • MD5

    04ce8e7391c4af9e1d6182dbac561586

  • SHA1

    74abf8118e9d1b817bfa968cece11c35256d632e

  • SHA256

    718c56527df3690bdf0bd39455af6674d49fd3f8a4a7ae3b0adcb9e6491cfa44

  • SHA512

    a4395f7a0345d154393cc093320922be4978366d71bff40f0c642d5f28ff339bea550bd153e10420f6dd9880632800e42e5e2add6b4c59fc212b7e03f3c5d432

  • SSDEEP

    12288:I7vCnUpxMUUyNdg8tss7X6Ju4O20tHsIFpfpI09yVoHyIa60b8clZmoojaUEAojz:I7Y0/jQuoh7Pw2

Malware Config

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 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\2025-03-24_04ce8e7391c4af9e1d6182dbac561586_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-03-24_04ce8e7391c4af9e1d6182dbac561586_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2600
    • 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:4752
      • 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:5620
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:1100
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4280
      • 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:3568
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:936
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1324
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4116
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2708
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\note.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:2512
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4060
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2276
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:5732
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4132

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      927KB

      MD5

      04ce8e7391c4af9e1d6182dbac561586

      SHA1

      74abf8118e9d1b817bfa968cece11c35256d632e

      SHA256

      718c56527df3690bdf0bd39455af6674d49fd3f8a4a7ae3b0adcb9e6491cfa44

      SHA512

      a4395f7a0345d154393cc093320922be4978366d71bff40f0c642d5f28ff339bea550bd153e10420f6dd9880632800e42e5e2add6b4c59fc212b7e03f3c5d432

    • C:\Users\Admin\Desktop\note.txt

      Filesize

      46B

      MD5

      ab44624d3e7b8c8d02b4928a625300fb

      SHA1

      27ff81a1a0b9479ff6c10613108a62d4311e8aac

      SHA256

      3350c7d6b56d8451b0729c2e5fe2a0a0ff44ac3697cf32cdf8090cff5b2355ef

      SHA512

      46c9fc8a09c6238b739c5c9697d548d15c89b2e9152973a155ba6a777de9b662d6e92bdba50a06b4a3668e69d8948b2f156537e31cd1cdd3374a55de4e2d06e7

    • memory/2600-0-0x00007FF8227B3000-0x00007FF8227B5000-memory.dmp

      Filesize

      8KB

    • memory/2600-1-0x0000000000F90000-0x000000000107E000-memory.dmp

      Filesize

      952KB

    • memory/4752-14-0x00007FF8227B0000-0x00007FF823271000-memory.dmp

      Filesize

      10.8MB

    • memory/4752-72-0x00007FF8227B0000-0x00007FF823271000-memory.dmp

      Filesize

      10.8MB