Overview

overview

10

Static

static

10

Document.doc.scr

windows7-x64

9

Document.doc.scr

windows10-2004-x64

9

Analysis

  • max time kernel
    147s
  • 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
    26/04/2024, 01:39

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General

  • Target
    Document.doc.scr
  • Size 194KB
  • Sample240426-b3fhfaha99
  • SHA256 1ecea8b0bc92378bf2bdd1c14ae1628c573569419b91cc34504d2c3f8bb9f8b2
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
ransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (585) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 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.

    spywarestealer
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
    ransomware
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Control Panel 2 IoCs
    evasion
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Document.doc.scr
    "C:\Users\Admin\AppData\Local\Temp\Document.doc.scr" /S
    1⤵
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:4400
    • C:\ProgramData\87AF.tmp
      "C:\ProgramData\87AF.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:5172
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\87AF.tmp >> NUL
        3⤵
          PID:4980
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:4552
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:4988
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{56FD2345-5236-43C0-B433-781EA42DF351}.xps" 133585692073090000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of SetWindowsHookEx
          PID:2616

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            MMMMMMMMMMM
            • Path C:\$Recycle.Bin\S-1-5-21-2288054676-1871194608-3559553667-1000\MMMMMMMMMMM
            • Size 129B
            • SHA256 39a759c63b0e3bee03298d694e38b3ec14b1cf527efe960997276f7b30befcc7
            • MD5 SHA1 SHA512
            Submit Download

            87AF.tmp
            • Path C:\ProgramData\87AF.tmp
            • Size 14KB
            • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            DDDDDDDDDDDDDDDD
            • Path C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDD
            • Size 194KB
            • SHA256 5084fde499a7e037a90ddca91760c5b326edf628840ae77618bf1d8763b07df1
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            Open Notebook.onetoc2
            • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
            • Size 4KB
            • SHA256 ed1a60d551554324a06a85aaaa3c9e407eca6c2bdcda97fb079448721403afde
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            te8ZzuVLn.README.txt
            • Path C:\Users\te8ZzuVLn.README.txt
            • Size 434B
            • SHA256 6fe668fe8bf69158d1fd08e90f3cff60c1df410bf752635bf152853b6112549c
            • MD5 SHA1 SHA512
            Submit Download

            DDDDDDDDDDD
            • Path F:\$RECYCLE.BIN\S-1-5-21-2288054676-1871194608-3559553667-1000\DDDDDDDDDDD
            • Size 129B
            • SHA256 7aac83915d698e18a5a26c361422ed450afcc59f46f65a7d745dba2c8dcfe61c
            • MD5 SHA1 SHA512
            Submit Download

            memory/2616-2770-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2807-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2773-0x00007FFC510F0000-0x00007FFC51100000-memory.dmp
            Download

            memory/2616-2766-0x00007FFC510F0000-0x00007FFC51100000-memory.dmp
            Download

            memory/2616-2774-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2800-0x00007FFC510F0000-0x00007FFC51100000-memory.dmp
            Download

            memory/2616-2805-0x00007FFC510F0000-0x00007FFC51100000-memory.dmp
            Download

            memory/2616-2804-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2842-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2769-0x00007FFC510F0000-0x00007FFC51100000-memory.dmp
            Download

            memory/2616-2806-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2838-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2808-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2809-0x00007FFC4EB90000-0x00007FFC4EBA0000-memory.dmp
            Download

            memory/2616-2810-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2811-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2812-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2813-0x00007FFC4EB90000-0x00007FFC4EBA0000-memory.dmp
            Download

            memory/2616-2814-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/2616-2815-0x00007FFC91070000-0x00007FFC91265000-memory.dmp
            Download

            memory/4572-1-0x0000000002600000-0x0000000002610000-memory.dmp
            Download

            memory/4572-0-0x0000000002600000-0x0000000002610000-memory.dmp
            Download

            memory/4572-2-0x0000000002600000-0x0000000002610000-memory.dmp
            Download