Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 12:44

General

  • Target
    904d1e156a65d8d443e9295cca6ece545f25299b69adf99cdc1418c6475403a6.exe
  • Size 380KB
  • Sample241102-pykhgsvaph
  • SHA256 904d1e156a65d8d443e9295cca6ece545f25299b69adf99cdc1418c6475403a6
  • 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\904d1e156a65d8d443e9295cca6ece545f25299b69adf99cdc1418c6475403a6.exe
    "C:\Users\Admin\AppData\Local\Temp\904d1e156a65d8d443e9295cca6ece545f25299b69adf99cdc1418c6475403a6.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:3896
    • 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:3676

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        login[3].htm

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\JAZ6MGFU\login[3].htm
        • Size 168B
        • SHA256 43edf068d34276e8ade4113d4d7207de19fc98a2ae1c07298e593edae2a8774c
        • MD5 SHA1 SHA512

        2B07.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\2B07.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        4126.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\4126.tmp
        • Size 57KB
        • SHA256 46e63eb58776c7a1415dc4c8436d4a54d6cfcc5bd10acd07857aa33deb5aa959
        • MD5 SHA1 SHA512 SSDEEP

        41FA.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\41FA.tmp
        • Size 41KB
        • SHA256 400002673b50127b1149e860e0b4540cb37896e9201e7bb587eba370a38aab68
        • MD5 SHA1 SHA512 SSDEEP

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 380KB
        • SHA256 8c6c8e847a92a7c101efdf1f1d068318bd8da5420e4d46abaeddcb532d4a07cb
        • MD5 SHA1 SHA512 SSDEEP

        memory/3676-47-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-32-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-13-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-29-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-27-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-46-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-67-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-73-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-66-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-65-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-64-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-63-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-62-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-61-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-60-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-59-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-58-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-57-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-42-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-54-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-52-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-53-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-51-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-50-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-49-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-48-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-15-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-68-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-16-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-55-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-56-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-40-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-39-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-37-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-36-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-35-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-33-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-34-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-43-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-31-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-30-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-26-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-25-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-24-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-23-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-22-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-21-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-20-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-19-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-44-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-41-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-38-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-10-0x0000000002730000-0x00000000027D8000-memory.dmp

        memory/3676-28-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-18-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-17-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3676-171-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/3896-9-0x0000000000400000-0x000000000046B000-memory.dmp