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
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 01:41

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General

  • Target
    a18a6bacc0d8b1dd4544cdf1e178a98a36b575b5be8b307c27c65455b1307616.exe
  • Size 194KB
  • Sample240430-b4actahb7z
  • SHA256 a18a6bacc0d8b1dd4544cdf1e178a98a36b575b5be8b307c27c65455b1307616
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10
ransomwarespywarestealer

Malware Config

Signatures

  • Renames multiple (590) 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:2216
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:6016
    • C:\ProgramData\66C9.tmp
      "C:\ProgramData\66C9.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:5816
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\66C9.tmp >> NUL
        3⤵
          PID:5572
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
      1⤵
        PID:3804
      • C:\Windows\system32\printfilterpipelinesvc.exe
        C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
        1⤵
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:5528
        • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
          /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{726D25A7-B17D-4B37-A9D3-E4DEB28E968B}.xps" 133589148949240000
          2⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious use of SetWindowsHookEx
          PID:2156

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            DDDDDDDDDDD
            • Path C:\$Recycle.Bin\S-1-5-21-540404634-651139247-2967210625-1000\DDDDDDDDDDD
            • Size 129B
            • SHA256 a7caf0c5d5389c35da9ee52ad91d344da5ebae3a064393c3603170310c590ff7
            • MD5 SHA1 SHA512
            Submit Download

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

            66C9.tmp
            • Path C:\ProgramData\66C9.tmp
            • Size 14KB
            • SHA256 917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
            • Path C:\Users\Admin\AppData\Local\Temp\EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
            • Size 194KB
            • SHA256 440134ff649a64ebbf6d90e91e4be8cfd4a8700838c2042521b7c5eb24535ad6
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            Open Notebook.onetoc2
            • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
            • Size 4KB
            • SHA256 4087d1a3b3cdf4e39661b36996900185e36b2b36b8733741d709e00bd5169a5a
            • MD5 SHA1 SHA512 SSDEEP
            Submit Download

            DDDDDDDDDDD
            • Path F:\$RECYCLE.BIN\S-1-5-21-540404634-651139247-2967210625-1000\DDDDDDDDDDD
            • Size 129B
            • SHA256 2d350d7702ed51c12aef822e1d545cbcb7742e76ebd2e5853375a509cd7787ca
            • MD5 SHA1 SHA512
            Submit Download

            memory/2156-2729-0x00007FFAB11B0000-0x00007FFAB11C0000-memory.dmp
            Download

            memory/2156-2732-0x00007FFAB11B0000-0x00007FFAB11C0000-memory.dmp
            Download

            memory/2156-2733-0x00007FFAB11B0000-0x00007FFAB11C0000-memory.dmp
            Download

            memory/2156-2731-0x00007FFAB11B0000-0x00007FFAB11C0000-memory.dmp
            Download

            memory/2156-2734-0x00007FFAB11B0000-0x00007FFAB11C0000-memory.dmp
            Download

            memory/2156-2754-0x00007FFAAEC70000-0x00007FFAAEC80000-memory.dmp
            Download

            memory/2156-2767-0x00007FFAAEC70000-0x00007FFAAEC80000-memory.dmp
            Download

            memory/2216-0-0x0000000003440000-0x0000000003450000-memory.dmp
            Download

            memory/2216-1-0x0000000003440000-0x0000000003450000-memory.dmp
            Download

            memory/2216-2-0x0000000003440000-0x0000000003450000-memory.dmp
            Download