Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 02:18

General

  • Target
    91f6decbef6b9e8d950ad6e4d3d8e79840f26653b6a2259a957dc6295118e151.exe
  • Size 218KB
  • Sample241031-crhdbsymfl
  • SHA256 91f6decbef6b9e8d950ad6e4d3d8e79840f26653b6a2259a957dc6295118e151
  • 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
  • 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\91f6decbef6b9e8d950ad6e4d3d8e79840f26653b6a2259a957dc6295118e151.exe
    "C:\Users\Admin\AppData\Local\Temp\91f6decbef6b9e8d950ad6e4d3d8e79840f26653b6a2259a957dc6295118e151.exe"
    1⤵
    • Modifies WinLogon
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: RenamesItself
    • Suspicious use of WriteProcessMemory
    PID:2440
    • 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:1812

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7946.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7946.tmp
        • Size 593B
        • SHA256 7392749832c70fcfc2d440d7afc2f880000dd564930d95d634eb1199fa15de30
        • MD5 SHA1 SHA512

        7946.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\7946.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        9E00.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\9E00.tmp
        • Size 481B
        • SHA256 54bd9c5b147e04b130b17d3ce85f0e52f024f8eff80d78b5126c3f646466f7ff
        • MD5 SHA1 SHA512

        A580.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A580.tmp
        • Size 60KB
        • SHA256 9c9aa40451a06912719292e5ac1d7722c72f309e9bafca91c7adf750481d1a40
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 218KB
        • SHA256 4ce7d9e5e10ea932f4e0690108cb18e0b960a4e18886510ed8b227013caa6bad
        • MD5 SHA1 SHA512 SSDEEP

        memory/1812-47-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-43-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-22-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-20-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-24-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-51-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-78-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-77-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-76-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-75-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-74-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-73-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-71-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-69-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-68-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-67-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-66-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-65-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-64-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-63-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-62-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-61-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-59-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-58-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-57-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-55-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-54-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-52-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-50-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-49-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-48-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-14-0x0000000000400000-0x00000000005AE000-memory.dmp

        memory/1812-46-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-41-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-18-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-44-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-45-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-40-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-38-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-37-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-35-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-34-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-79-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-33-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-32-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-72-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-70-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-31-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-30-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-29-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-60-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-28-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-27-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-56-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-26-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-53-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-25-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-42-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-39-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-36-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-23-0x0000000002D00000-0x0000000002DB6000-memory.dmp

        memory/1812-17-0x0000000000400000-0x00000000005AE000-memory.dmp

        memory/1812-16-0x00000000028D0000-0x0000000002978000-memory.dmp

        memory/1812-15-0x0000000000400000-0x00000000005AE000-memory.dmp

        memory/2440-0-0x00000000022F0000-0x0000000002341000-memory.dmp

        memory/2440-1-0x0000000000400000-0x000000000045F000-memory.dmp

        memory/2440-11-0x0000000000400000-0x00000000005AE000-memory.dmp

        memory/2440-12-0x00000000022F0000-0x0000000002341000-memory.dmp

        memory/2440-13-0x0000000000400000-0x000000000045F000-memory.dmp