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Analysis

  • max time kernel
    110s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    21/01/2025, 12:09

General

  • Target

    a4723cb3c1191d1ccbe3feaa0cd8a998f90bb8a2638ade07977b1778f2128f09N.exe

  • Size

    208KB

  • MD5

    efe92c3be8c2519593474dedd7726500

  • SHA1

    4784cebb3a906ee25f4ac5d07ad51c5a559df13c

  • SHA256

    a4723cb3c1191d1ccbe3feaa0cd8a998f90bb8a2638ade07977b1778f2128f09

  • SHA512

    5249d08850ad07c3e785a91799b265235646f0a6d7c2a4ee071e85d286815d94968b3b8a9063b0e572793c41e2a4ad5b3a19135a74fc1c2b78c7aa222817fbe9

  • SSDEEP

    6144:Ua1oB/yvpK0JCmRcRRR8N0e2kXfCqNidkfkw:UbapK0JCmRcU9vVokfD

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 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 53 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a4723cb3c1191d1ccbe3feaa0cd8a998f90bb8a2638ade07977b1778f2128f09N.exe
    "C:\Users\Admin\AppData\Local\Temp\a4723cb3c1191d1ccbe3feaa0cd8a998f90bb8a2638ade07977b1778f2128f09N.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:2264
    • 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:1908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\CEE4.tmp

    Filesize

    24KB

    MD5

    7a6173aae5565893791816605ebb2595

    SHA1

    2033ae20267dc5c68a22c79e1e75eab7ba7658a3

    SHA256

    4750cc859d45b15e342621418e331ca3562aea1430d28508b1117bc8211a3b5f

    SHA512

    904d36676a8c73f38d4fe1430a8989c05d4a41fec337d86fce882895ed1f15f6ffab601c7b01c9e3cddece18961fe2e389a574ea735a5e041be84b6264cf559b

  • C:\Users\Admin\AppData\Local\Temp\CF49.tmp

    Filesize

    42KB

    MD5

    75af8637a19e9bcf7237eb3d343aaa43

    SHA1

    1822cc04ad0a7ffdcb71dcc1ace7677d488707b1

    SHA256

    43ed50a32e797d0b59807c912d624c02a2cd51d8e25cff6bf60c423857f9e6b3

    SHA512

    5a603ffbdd00071a04d4b25f4f4971db5ee3f3e9a9d67d5a39a4867d5343821c758c821d1487a387e8b698102ea2235d51c108dda33be106d7bdcc81c6585846

  • \Windows\AppPatch\svchost.exe

    Filesize

    208KB

    MD5

    d6ff06e32678bf4a120683f5e97a2ea1

    SHA1

    d7eacb85225567e4bf448ceafa7da474a0366b9b

    SHA256

    dfdf6b38afeb1f2643d35ef1b25aac42103d4b3ada0b4787bab8cf7ce288cb1c

    SHA512

    43e9141a8d5346a23813a161f72287c4e6e046c0565172f27879a4a670c3d13429cd5cb1a43e8b2c0f3a145ced61c3e16b0d13ac1916f40462e7374ef82acc21

  • memory/1908-67-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-62-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-15-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/1908-16-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/1908-27-0x00000000021A0000-0x0000000002248000-memory.dmp

    Filesize

    672KB

  • memory/1908-28-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB

  • memory/1908-25-0x00000000021A0000-0x0000000002248000-memory.dmp

    Filesize

    672KB

  • memory/1908-21-0x00000000021A0000-0x0000000002248000-memory.dmp

    Filesize

    672KB

  • memory/1908-17-0x00000000021A0000-0x0000000002248000-memory.dmp

    Filesize

    672KB

  • memory/1908-29-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-33-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-31-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-35-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-38-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-43-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-82-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-80-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-79-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-78-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-77-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-76-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-75-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-74-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-73-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-72-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-71-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-70-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-69-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-68-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-19-0x00000000021A0000-0x0000000002248000-memory.dmp

    Filesize

    672KB

  • memory/1908-23-0x00000000021A0000-0x0000000002248000-memory.dmp

    Filesize

    672KB

  • memory/1908-66-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-55-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-64-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-61-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-60-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-59-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-58-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-57-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-56-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-63-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-54-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-53-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-52-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-51-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-50-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-49-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-47-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-46-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-45-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-44-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-42-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-41-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-40-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-39-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-65-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-37-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-36-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/1908-48-0x00000000023C0000-0x0000000002476000-memory.dmp

    Filesize

    728KB

  • memory/2264-1-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2264-0-0x00000000001D0000-0x00000000001D3000-memory.dmp

    Filesize

    12KB

  • memory/2264-14-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2264-13-0x00000000001D0000-0x00000000001D3000-memory.dmp

    Filesize

    12KB

  • memory/2264-12-0x0000000000400000-0x0000000000467000-memory.dmp

    Filesize

    412KB