Analysis

  • max time kernel
    124s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/02/2023, 05:25

General

  • Target

    2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe

  • Size

    1.9MB

  • MD5

    2c6f8e680a400cb2b5426090ccbdea93

  • SHA1

    47a691c438547b27fac9896f3783026d8be4dbe9

  • SHA256

    0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190

  • SHA512

    48a70440e4009c4ab2a913ee3b9dc24b73ab4413cc82f5e8194f1cca87ead356de1de90c461c9109afa5f690cb0c9365f49a5ea83f54b4ad97c4287346237f03

  • SSDEEP

    24576:CSndG2iSNjN2w9Os9cRfO/d8mT6c6aVqwPhUMel84Mn:HfJqsgXmgyJPu

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

  • Chaos Ransomware 3 IoCs
  • Deletes shadow copies 2 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.

  • Modifies extensions of user files 4 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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) 33 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). Likely ransomware behaviour.

  • 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
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 48 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-02-03_2c6f8e680a400cb2b5426090ccbdea93_wannacry.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4924
    • C:\Users\Admin\AppData\Roaming\Windows Defender.exe
      "C:\Users\Admin\AppData\Roaming\Windows Defender.exe"
      2⤵
      • Modifies extensions of user files
      • 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:4784
      • 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:3516
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          4⤵
          • Interacts with shadow copies
          PID:4076
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          4⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1144
      • 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:4292
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:3360
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          4⤵
          • Modifies boot configuration data using bcdedit
          PID:1784
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3928
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          4⤵
          • Deletes backup catalog
          PID:5016
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\傻逼,你被耍了!你的所有文件都被加密!.txt
        3⤵
          PID:3028
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3728
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3036
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:2396
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:2788

      Network

            MITRE ATT&CK Enterprise v6

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            Downloads

            • C:\Users\Admin\AppData\Roaming\Windows Defender.exe

              Filesize

              1.9MB

              MD5

              2c6f8e680a400cb2b5426090ccbdea93

              SHA1

              47a691c438547b27fac9896f3783026d8be4dbe9

              SHA256

              0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190

              SHA512

              48a70440e4009c4ab2a913ee3b9dc24b73ab4413cc82f5e8194f1cca87ead356de1de90c461c9109afa5f690cb0c9365f49a5ea83f54b4ad97c4287346237f03

            • C:\Users\Admin\AppData\Roaming\Windows Defender.exe

              Filesize

              1.9MB

              MD5

              2c6f8e680a400cb2b5426090ccbdea93

              SHA1

              47a691c438547b27fac9896f3783026d8be4dbe9

              SHA256

              0f3d700c95b21e5437c0aedb3cacd787ce6701c49180d8d564e4574dffc42190

              SHA512

              48a70440e4009c4ab2a913ee3b9dc24b73ab4413cc82f5e8194f1cca87ead356de1de90c461c9109afa5f690cb0c9365f49a5ea83f54b4ad97c4287346237f03

            • C:\Users\Admin\AppData\Roaming\傻逼,你被耍了!你的所有文件都被加密!.txt

              Filesize

              470B

              MD5

              c83c2b8e368e928c7ab979f7bb44dac4

              SHA1

              4662ae6c1d2195a178bdeb23141df221181b9fdf

              SHA256

              d42f2a19a64f644085bb2411b58397f5ce8ff1d85857e9985163138964ea0251

              SHA512

              599f1cb6d607069544a492ed198fea62e51c5cefeb02ec33843cb63255705a2cf412467814493edf7a920b38ad71c65d8e6bd803b28b2f160e3b0727fc2cba2e

            • memory/4784-140-0x00007FFECDEA0000-0x00007FFECE961000-memory.dmp

              Filesize

              10.8MB

            • memory/4784-139-0x00007FFECDEA0000-0x00007FFECE961000-memory.dmp

              Filesize

              10.8MB

            • memory/4924-132-0x0000000000830000-0x0000000000A1E000-memory.dmp

              Filesize

              1.9MB

            • memory/4924-138-0x00007FFECDEA0000-0x00007FFECE961000-memory.dmp

              Filesize

              10.8MB

            • memory/4924-134-0x00007FFECDEA0000-0x00007FFECE961000-memory.dmp

              Filesize

              10.8MB

            • memory/4924-133-0x00007FFECDEA0000-0x00007FFECE961000-memory.dmp

              Filesize

              10.8MB