Overview

overview

10

Static

static

10

a18a6bacc0...16.exe

windows7-x64

9

a18a6bacc0...16.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/05/2024, 01:56

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    a18a6bacc0d8b1dd4544cdf1e178a98a36b575b5be8b307c27c65455b1307616.exe
  • Size 194KB
  • Sample240501-cctstadd5t
  • SHA256 a18a6bacc0d8b1dd4544cdf1e178a98a36b575b5be8b307c27c65455b1307616
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
ransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (636) 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\a18a6bacc0d8b1dd4544cdf1e178a98a36b575b5be8b307c27c65455b1307616.exe
    "C:\Users\Admin\AppData\Local\Temp\a18a6bacc0d8b1dd4544cdf1e178a98a36b575b5be8b307c27c65455b1307616.exe"
    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:3352
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:1076
    • C:\ProgramData\6C67.tmp
      "C:\ProgramData\6C67.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:3916
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\6C67.tmp >> NUL
        3⤵
          PID:5328
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:876
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:4884
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{F873482B-4F8E-4C93-95C8-8426799E8E7C}.xps" 133590021892360000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of SetWindowsHookEx
          PID:1108

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            desktop.ini
            • Path C:\$Recycle.Bin\S-1-5-21-3726321484-1950364574-433157660-1000\desktop.ini
            • Size 129B
            • SHA256 e8b8065e05f1eec2c412af39d1680fc5440379b5b4a55a061e09207c6c1f7513
            • MD5 SHA1 SHA512
            Submit Download

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

            6C67.tmp
            • Path C:\ProgramData\6C67.tmp
            • Size 14KB
            • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
            • Path C:\Users\Admin\AppData\Local\Temp\CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
            • Size 194KB
            • SHA256 97eda36668ffbcf21ecdc63f02c5262bfc3d30aa9380efb438136b7a7349dd75
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            {F11612BB-6959-4E85-9A1B-6AD922242D86}
            • Path C:\Users\Admin\AppData\Local\Temp\{F11612BB-6959-4E85-9A1B-6AD922242D86}
            • Size 4KB
            • SHA256 cda84c89a191ecd6c16a79fe8bb196a7f9df77f3a5d45f89ab678fcaaa4a1cec
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            Open Notebook.onetoc2
            • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
            • Size 4KB
            • SHA256 8bd38cc526ea399d590ea684381e9dd2ab55c486d92003a0290cc450d37f8dd9
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            DDDDDDDDDDD
            • Path F:\$RECYCLE.BIN\S-1-5-21-3726321484-1950364574-433157660-1000\DDDDDDDDDDD
            • Size 129B
            • SHA256 dcc951f7571bd380aed107143c8b361b44cc5a0d5baed234e819538c38323247
            • MD5 SHA1 SHA512
            Submit Download

            memory/1108-2826-0x00007FFE0A3B0000-0x00007FFE0A3C0000-memory.dmp
            Download

            memory/1108-2829-0x00007FFE0A3B0000-0x00007FFE0A3C0000-memory.dmp
            Download

            memory/1108-2831-0x00007FFE0A3B0000-0x00007FFE0A3C0000-memory.dmp
            Download

            memory/1108-2830-0x00007FFE0A3B0000-0x00007FFE0A3C0000-memory.dmp
            Download

            memory/1108-2828-0x00007FFE0A3B0000-0x00007FFE0A3C0000-memory.dmp
            Download

            memory/1108-2860-0x00007FFE07E60000-0x00007FFE07E70000-memory.dmp
            Download

            memory/1108-2861-0x00007FFE07E60000-0x00007FFE07E70000-memory.dmp
            Download

            memory/3352-1-0x00000000025E0000-0x00000000025F0000-memory.dmp
            Download

            memory/3352-0-0x00000000025E0000-0x00000000025F0000-memory.dmp
            Download

            memory/3352-2-0x00000000025E0000-0x00000000025F0000-memory.dmp
            Download