Overview

overview

10

Static

static

10

cd727c8fc0...65.exe

windows7-x64

9

cd727c8fc0...65.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    145s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 01:44

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General

  • Target
    cd727c8fc0303b9a77641cc43061fa6ae9de3a0af40fd525c4a745c1dcdd5965.exe
  • Size 147KB
  • Sample240507-b5zzvsch3t
  • SHA256 cd727c8fc0303b9a77641cc43061fa6ae9de3a0af40fd525c4a745c1dcdd5965
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
ransomware

Malware Config

Signatures

  • Renames multiple (153) 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
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 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
  • Suspicious behavior: EnumeratesProcesses 14 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\cd727c8fc0303b9a77641cc43061fa6ae9de3a0af40fd525c4a745c1dcdd5965.exe
    "C:\Users\Admin\AppData\Local\Temp\cd727c8fc0303b9a77641cc43061fa6ae9de3a0af40fd525c4a745c1dcdd5965.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:3980
    • C:\ProgramData\6478.tmp
      "C:\ProgramData\6478.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:4132
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\6478.tmp >> NUL
        3⤵
          PID:2224
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:4940
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:4672
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{449DD550-481F-46EF-9482-0C2AB3BF3FF6}.xps" 133595198707110000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:5000

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            CCCCCCCCCCC
            • Path C:\$Recycle.Bin\S-1-5-21-17203666-93769886-2545153620-1000\CCCCCCCCCCC
            • Size 129B
            • SHA256 716506882a9455fc536d14e2de6ab5916b02aa9527971ecfbc164655b01268b5
            • MD5 SHA1 SHA512
            Submit Download

            6478.tmp
            • Path C:\ProgramData\6478.tmp
            • Size 14KB
            • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
            • Path C:\Users\Admin\AppData\Local\Temp\DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
            • Size 147KB
            • SHA256 3a763a6c645979903f5c8b60ebe796373b0a8bc865c6c686b061aaeb19c7b77a
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            {29FD3F20-F697-4188-818C-77064E1AB973}
            • Path C:\Users\Admin\AppData\Local\Temp\{29FD3F20-F697-4188-818C-77064E1AB973}
            • Size 4KB
            • SHA256 720bae4ba566fda100b61eca108301c55649c5e14dc648456d15262706240dbf
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            Open Notebook.onetoc2
            • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
            • Size 4KB
            • SHA256 a27e0e408fd27fa3c1c20830d03378696c3ee6169d542c224cb400b687d0dd72
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            wQbYPVKs0.README.txt
            • Path C:\wQbYPVKs0.README.txt
            • Size 1KB
            • SHA256 484b2e44de4683c20f2c34218c52eb0f3dff2477c40bf9b252d3d7f02e08724b
            • MD5 SHA1 SHA512
            Submit Download

            DDDDDDDDDDD
            • Path F:\$RECYCLE.BIN\S-1-5-21-17203666-93769886-2545153620-1000\DDDDDDDDDDD
            • Size 129B
            • SHA256 31248c61f18e6db761ef66d89f156250e055a959ce93f520326be3e0d403f82b
            • MD5 SHA1 SHA512
            Submit Download

            memory/1656-2-0x0000000002DE0000-0x0000000002DF0000-memory.dmp
            Download

            memory/1656-1-0x0000000002DE0000-0x0000000002DF0000-memory.dmp
            Download

            memory/1656-0-0x0000000002DE0000-0x0000000002DF0000-memory.dmp
            Download

            memory/5000-345-0x00007FF9CCCF0000-0x00007FF9CCD00000-memory.dmp
            Download

            memory/5000-348-0x00007FF9CCCF0000-0x00007FF9CCD00000-memory.dmp
            Download

            memory/5000-349-0x00007FF9CCCF0000-0x00007FF9CCD00000-memory.dmp
            Download

            memory/5000-350-0x00007FF9CAC90000-0x00007FF9CACA0000-memory.dmp
            Download

            memory/5000-351-0x00007FF9CAC90000-0x00007FF9CACA0000-memory.dmp
            Download

            memory/5000-346-0x00007FF9CCCF0000-0x00007FF9CCD00000-memory.dmp
            Download

            memory/5000-347-0x00007FF9CCCF0000-0x00007FF9CCD00000-memory.dmp
            Download