Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/11/2024, 16:27

General

  • Target
    11954188e53e1d9ba528cb6d4609a0e086fd9379d52904f8b4e9b48c466c987dN.exe
  • Size 355KB
  • Sample241124-tyfazstrhm
  • SHA256 11954188e53e1d9ba528cb6d4609a0e086fd9379d52904f8b4e9b48c466c987d
  • 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\11954188e53e1d9ba528cb6d4609a0e086fd9379d52904f8b4e9b48c466c987dN.exe
    "C:\Users\Admin\AppData\Local\Temp\11954188e53e1d9ba528cb6d4609a0e086fd9379d52904f8b4e9b48c466c987dN.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:552
    • 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:2740

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        login[2].htm

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\P2UT3MS5\login[2].htm
        • Size 168B
        • SHA256 43edf068d34276e8ade4113d4d7207de19fc98a2ae1c07298e593edae2a8774c
        • MD5 SHA1 SHA512

        19A1.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\19A1.tmp
        • Size 593B
        • SHA256 7392749832c70fcfc2d440d7afc2f880000dd564930d95d634eb1199fa15de30
        • MD5 SHA1 SHA512

        19A1.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\19A1.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        2935.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\2935.tmp
        • Size 61KB
        • SHA256 8d865e664d24d3451fd901949e6a4e04d6f789b2ef082d80c015093169920ede
        • MD5 SHA1 SHA512 SSDEEP

        2957.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\2957.tmp
        • Size 24KB
        • SHA256 dc874a2680bdbefec5cecb2d2ada0f114f2ac0893b410af9f7dfac2c36328193
        • MD5 SHA1 SHA512 SSDEEP

        2A58.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\2A58.tmp
        • Size 42KB
        • SHA256 c7de77942ecbd0607cbcfd8e4e372efadae32a8adf7ada5910d959ccb0c6d2a6
        • MD5 SHA1 SHA512 SSDEEP

        2A58.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\2A58.tmp
        • Size 42KB
        • SHA256 8b7158dcda9cb66765c270dae8bf95f9fcc7039ad87a61e3644722909df9e050
        • MD5 SHA1 SHA512 SSDEEP

        B825.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\B825.tmp
        • Size 1KB
        • SHA256 0b80fc4f1c0b37a765186b7df1fb96d91cd029bef545ddb166dedd78c87769eb
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 355KB
        • SHA256 910945a6a60adc7094ef5c549202bd3aa474adffeb668ac6c3d1ee8a4404617e
        • MD5 SHA1 SHA512 SSDEEP

        memory/552-8-0x0000000000F80000-0x0000000000FDF000-memory.dmp

        memory/2740-50-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-45-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-23-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-73-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-72-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-71-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-70-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-69-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-68-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-67-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-66-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-65-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-64-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-63-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-62-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-60-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-59-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-58-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-57-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-56-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-35-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-55-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-54-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-53-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-52-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-51-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-16-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-49-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-48-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-47-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-46-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-19-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-44-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-43-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-42-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-41-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-40-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-39-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-37-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-34-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-36-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-33-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-32-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-31-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-30-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-29-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-28-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-27-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-26-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-25-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-24-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-22-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-21-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-20-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-18-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-13-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-14-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-10-0x0000000003510000-0x00000000035B8000-memory.dmp

        memory/2740-61-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-38-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-17-0x0000000003900000-0x00000000039B6000-memory.dmp

        memory/2740-312-0x0000000003900000-0x00000000039B6000-memory.dmp