Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    22/11/2024, 23:29

General

  • Target
    659e58aec07c0118c07cec7636309623fbc9e6c0e065624a70e16ab28fc18519.exe
  • Size 375KB
  • Sample241122-3gpb1asket
  • SHA256 659e58aec07c0118c07cec7636309623fbc9e6c0e065624a70e16ab28fc18519
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • simda

Attributes
  • dga

    gatyfus.com

    lyvyxor.com

    vojyqem.com

    qetyfuv.com

    puvyxil.com

    gahyqah.com

    lyryfyd.com

    vocyzit.com

    qegyqaq.com

    purydyv.com

    gacyzuz.com

    lygymoj.com

    vowydef.com

    qexylup.com

    pufymoq.com

    gaqydeb.com

    lyxylux.com

    vofymik.com

    qeqysag.com

    puzylyp.com

    gadyniw.com

    lymysan.com

    volykyc.com

    qedynul.com

    pumypog.com

    galykes.com

    lysynur.com

    vonypom.com

    qekykev.com

    pupybul.com

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Simda family
  • simda

    Simda is an infostealer written in C++.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies WinLogon 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\659e58aec07c0118c07cec7636309623fbc9e6c0e065624a70e16ab28fc18519.exe
    "C:\Users\Admin\AppData\Local\Temp\659e58aec07c0118c07cec7636309623fbc9e6c0e065624a70e16ab28fc18519.exe"
    1⤵
    • Loads dropped DLL
    • Modifies WinLogon
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:328
    • C:\Windows\apppatch\svchost.exe
      "C:\Windows\apppatch\svchost.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Modifies WinLogon
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:2780

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        C8A7.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\C8A7.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        ED9F.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\ED9F.tmp
        • Size 24KB
        • SHA256 2dbce4a1486d453cd0ac1bc34014fdbd3a7e0bb7ae2fc2f165f18baf16c8cd56
        • MD5 SHA1 SHA512 SSDEEP

        EDCF.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\EDCF.tmp
        • Size 1KB
        • SHA256 297463067f6abe236a9af157fba3db12217b4d9e232d434b3f827232dc6daf35
        • MD5 SHA1 SHA512

        EDF2.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\EDF2.tmp
        • Size 42KB
        • SHA256 c89f2a3e2f193dbd0c4d30ecd39b22f47bf0b0bb79ba69994b23068de3b9371a
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\AppPatch\svchost.exe
        • Size 375KB
        • SHA256 bc0c13dce7bdfe5d502d14314f331c24d1b77f22effc6ba46b9befd202c8b643
        • MD5 SHA1 SHA512 SSDEEP

        memory/328-0-0x0000000000400000-0x0000000000464000-memory.dmp

        memory/328-14-0x0000000000400000-0x0000000000464000-memory.dmp

        memory/2780-67-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-50-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-27-0x00000000021C0000-0x0000000002268000-memory.dmp

        memory/2780-25-0x00000000021C0000-0x0000000002268000-memory.dmp

        memory/2780-23-0x00000000021C0000-0x0000000002268000-memory.dmp

        memory/2780-22-0x00000000021C0000-0x0000000002268000-memory.dmp

        memory/2780-28-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-32-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-30-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-34-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-39-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-61-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-80-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-79-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-78-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-77-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-76-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-75-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-74-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-73-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-72-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-71-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-70-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-69-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-68-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-17-0x00000000021C0000-0x0000000002268000-memory.dmp

        memory/2780-66-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-65-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-19-0x00000000021C0000-0x0000000002268000-memory.dmp

        memory/2780-64-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-47-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-59-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-58-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-57-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-56-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-55-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-54-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-53-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-52-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-51-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-63-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-49-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-48-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-60-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-46-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-45-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-44-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-42-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-41-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-40-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-62-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-38-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-37-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-36-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-35-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-43-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-206-0x0000000000400000-0x0000000000464000-memory.dmp

        memory/2780-207-0x0000000002370000-0x0000000002426000-memory.dmp

        memory/2780-16-0x0000000000400000-0x0000000000464000-memory.dmp