Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/10/2024, 04:06

General

  • Target
    b18e3788087a6ec415869bdbdd488aad32ec798efb942a045a8851e497dd8f6d.exe
  • Size 380KB
  • Sample241025-epln3sverk
  • SHA256 b18e3788087a6ec415869bdbdd488aad32ec798efb942a045a8851e497dd8f6d
  • 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

    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\b18e3788087a6ec415869bdbdd488aad32ec798efb942a045a8851e497dd8f6d.exe
    "C:\Users\Admin\AppData\Local\Temp\b18e3788087a6ec415869bdbdd488aad32ec798efb942a045a8851e497dd8f6d.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:728
    • 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:1828

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        login[1].htm

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\4OVS68NE\login[1].htm
        • Size 162B
        • SHA256 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
        • MD5 SHA1 SHA512

        BDA6.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\BDA6.tmp
        • Size 24KB
        • SHA256 b793f3be34929f05ded0c0cd028a99110384bd13fe88dfb21ffb549c55da14d6
        • MD5 SHA1 SHA512 SSDEEP

        BEE5.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\BEE5.tmp
        • Size 42KB
        • SHA256 246f8b149f196276190e8400545a7e25bbbbba67dd29d535d68e39359b7ad102
        • MD5 SHA1 SHA512 SSDEEP

        E955.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\E955.tmp
        • Size 593B
        • SHA256 7392749832c70fcfc2d440d7afc2f880000dd564930d95d634eb1199fa15de30
        • MD5 SHA1 SHA512

        E955.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\E955.tmp
        • Size 593B
        • SHA256 b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Windows\apppatch\svchost.exe
        • Size 380KB
        • SHA256 d168bb7422310f3d0b337226a71ab8e349a10db6e88a6df3b9c4387608d3007e
        • MD5 SHA1 SHA512 SSDEEP

        memory/728-9-0x0000000000400000-0x000000000046B000-memory.dmp

        memory/1828-52-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-43-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-14-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-16-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-17-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-34-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-35-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-71-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-73-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-72-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-70-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-69-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-68-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-67-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-66-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-65-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-64-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-63-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-62-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-61-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-60-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-59-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-58-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-57-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-56-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-55-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-53-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-10-0x0000000002730000-0x00000000027D8000-memory.dmp

        memory/1828-51-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-50-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-13-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-49-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-23-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-46-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-45-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-44-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-48-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-42-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-41-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-40-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-39-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-37-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-54-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-38-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-36-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-33-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-32-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-31-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-30-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-29-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-28-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-27-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-26-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-25-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-47-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-22-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-20-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-18-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-19-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-24-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-21-0x0000000002B40000-0x0000000002BF6000-memory.dmp

        memory/1828-164-0x0000000002B40000-0x0000000002BF6000-memory.dmp