Analysis

  • max time kernel
    103s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-12-2024 19:36

General

  • Target

    2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe

  • Size

    22KB

  • MD5

    fa9f7699ccdb08c6ba4a9f4aa62ff64c

  • SHA1

    b82759e29cecec7a0dd06c52c9259e4b24c6ff67

  • SHA256

    c50c9a28e88dbdfc9835e3722434af2db792c66d9ce1f496b395101289990e56

  • SHA512

    277c3eb7eb3b7de7451dc95da1103746ade6622cc66b09cb6b9e0a287dfdf5f2cdda5728619ab6c024db22ebf226af3a0232989ecef452c81fd07dcf01a5770f

  • SSDEEP

    384:33Mg/bqo2vLKErFppDKS+98GJMr91CIv6Ce2:hqo2OErFppDhN6Mr9Nvze2

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
  • 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 47 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\2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-02_fa9f7699ccdb08c6ba4a9f4aa62ff64c_destroyer_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4904
    • 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)
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3312
      • 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:4136
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:3128
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4168
      • 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:3548
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:4156
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3988
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:440
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:2796
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\doomed.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:4112
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3432
  • C:\Windows\system32\wbengine.exe
    "C:\Windows\system32\wbengine.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4076
  • C:\Windows\System32\vdsldr.exe
    C:\Windows\System32\vdsldr.exe -Embedding
    1⤵
      PID:1160
    • C:\Windows\System32\vds.exe
      C:\Windows\System32\vds.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2008

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      22KB

      MD5

      fa9f7699ccdb08c6ba4a9f4aa62ff64c

      SHA1

      b82759e29cecec7a0dd06c52c9259e4b24c6ff67

      SHA256

      c50c9a28e88dbdfc9835e3722434af2db792c66d9ce1f496b395101289990e56

      SHA512

      277c3eb7eb3b7de7451dc95da1103746ade6622cc66b09cb6b9e0a287dfdf5f2cdda5728619ab6c024db22ebf226af3a0232989ecef452c81fd07dcf01a5770f

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

      Filesize

      63B

      MD5

      8ae9fb63f30ede54240b29e5d76b4c9c

      SHA1

      d4737987ed4fc2e3cfb0aa0c49265ba38b46d576

      SHA256

      27be02602b11977f540dc1f087555f0f3c85a70620018de63e427f23ce7dca96

      SHA512

      0e845c763998112c7075beaee0a2a576b14b12c2b850cdb5a76a6f2cdb71beaf9bb01a3a352aad02a489c15269b8ebd15717e928e1025b3f45a70813d5b2e5d7

    • memory/3312-14-0x00007FFBAC560000-0x00007FFBAD021000-memory.dmp

      Filesize

      10.8MB

    • memory/3312-499-0x00007FFBAC560000-0x00007FFBAD021000-memory.dmp

      Filesize

      10.8MB

    • memory/4904-0-0x00007FFBAC563000-0x00007FFBAC565000-memory.dmp

      Filesize

      8KB

    • memory/4904-1-0x0000000000C70000-0x0000000000C7C000-memory.dmp

      Filesize

      48KB