Overview

overview

10

Static

static

3

Document.doc.scr

windows7-x64

10

Document.doc.scr

windows10-2004-x64

10

Analysis

  • max time kernel
    92s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/04/2024, 13:11

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General

  • Target
    Document.doc.scr
  • Size 57KB
  • Sample240429-qe5vrabc85
  • SHA256 0cc54ffd005b4d3d048e72f6d66bcc1ac5a7a511ab9ecf59dc1d2ece72c69e85
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
lockbitransomwarespywarestealer

Malware Config

Signatures

  • Lockbit

    Ransomware family with multiple variants released since late 2019.

    ransomwarelockbit
  • Rule to detect Lockbit 3.0 ransomware Windows payload 1 IoCs
  • Renames multiple (615) files with added filename extension

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

    ransomware
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 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 use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Document.doc.scr
    "C:\Users\Admin\AppData\Local\Temp\Document.doc.scr" /S
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:372
    • C:\Users\Admin\AppData\Local\Temp\76286406.scr
      "C:\Users\Admin\AppData\Local\Temp\76286406.scr" /S
      2⤵
      • Executes dropped EXE
      • 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:4952
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
        • Drops file in System32 directory
        PID:1240
      • C:\ProgramData\9DF6.tmp
        "C:\ProgramData\9DF6.tmp"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious use of WriteProcessMemory
        PID:4452
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\9DF6.tmp >> NUL
          4⤵
            PID:628
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:2124
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:1684
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{45E6E19C-A19D-4E70-95DF-824690580778}.xps" 133588699018680000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of SetWindowsHookEx
          PID:2936

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            BBBBBBBBBBB
            • Path C:\$Recycle.Bin\S-1-5-21-3571316656-3665257725-2415531812-1000\BBBBBBBBBBB
            • Size 129B
            • SHA256 b950f1911721fce0a8becb93deb73fe09b0cad99063dc191d98dafb05a2d171b
            • MD5 SHA1 SHA512
            Submit Download

            MIuB4Jpci.README.txt
            • Path C:\MIuB4Jpci.README.txt
            • Size 434B
            • SHA256 192d1e6078570865531e8a4c9840a483c4a2ac35fe468107284991f6da813191
            • MD5 SHA1 SHA512
            Submit Download

            9DF6.tmp
            • Path C:\ProgramData\9DF6.tmp
            • Size 14KB
            • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            76286406.scr
            • Path C:\Users\Admin\AppData\Local\Temp\76286406.scr
            • Size 194KB
            • SHA256 a18a6bacc0d8b1dd4544cdf1e178a98a36b575b5be8b307c27c65455b1307616
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            BBBBBBBBBBBB
            • Path C:\Users\Admin\AppData\Local\Temp\BBBBBBBBBBBB
            • Size 194KB
            • SHA256 c07c667ad45987da73322f78c38dcb28ed6921de504cb8f68555cd0f722f1e8e
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            Open Notebook.onetoc2
            • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
            • Size 4KB
            • SHA256 be2bed299e62c3e6862c6f41f1c9e8efbcbea16e2101a9bc4dcad52ead899479
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            DDDDDDDDDDD
            • Path F:\$RECYCLE.BIN\S-1-5-21-3571316656-3665257725-2415531812-1000\DDDDDDDDDDD
            • Size 129B
            • SHA256 abf79b7f0742cd5bd01d41f58b3cb6297942995fb8754abc6a292310b44c5ea7
            • MD5 SHA1 SHA512
            Submit Download

            memory/2936-2773-0x00007FFDEBE90000-0x00007FFDEBEA0000-memory.dmp
            Download

            memory/2936-2774-0x00007FFDEBE90000-0x00007FFDEBEA0000-memory.dmp
            Download

            memory/2936-2772-0x00007FFDEBE90000-0x00007FFDEBEA0000-memory.dmp
            Download

            memory/2936-2771-0x00007FFDEBE90000-0x00007FFDEBEA0000-memory.dmp
            Download

            memory/2936-2770-0x00007FFDEBE90000-0x00007FFDEBEA0000-memory.dmp
            Download

            memory/2936-2803-0x00007FFDE9630000-0x00007FFDE9640000-memory.dmp
            Download

            memory/2936-2804-0x00007FFDE9630000-0x00007FFDE9640000-memory.dmp
            Download

            memory/4952-6-0x00000000025D0000-0x00000000025E0000-memory.dmp
            Download

            memory/4952-7-0x00000000025D0000-0x00000000025E0000-memory.dmp
            Download

            memory/4952-8-0x00000000025D0000-0x00000000025E0000-memory.dmp
            Download