Analysis

  • max time kernel
    115s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2024 14:12

General

  • Target

    b043e3e0d2f9b4879ebfb607d583d1554da7cd4b1c5cb1aa788d82df37c0694eN.exe

  • Size

    686KB

  • MD5

    c6058ed5ad3a9550c18b8c76ca5d0500

  • SHA1

    1467597b0fd28ee307fdc935d27f4d4f7cf6fa93

  • SHA256

    b043e3e0d2f9b4879ebfb607d583d1554da7cd4b1c5cb1aa788d82df37c0694e

  • SHA512

    1fa810c344a592853f4adc1a10d34684f90b6bfb21343ec56a1c77b50df427d3f2cb40f66a921a649a4b8a9e35e40486c1ae4fbd448ea69b9d189189b5953639

  • SSDEEP

    12288:7mWhND9yJz+b1FcMLmp2ATTSsdApVHyGbs2CYPHrLpVmCbHDSgp:7mUNJyJqb1FcMap2ATT5itjCYZ3DSo

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 2 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b043e3e0d2f9b4879ebfb607d583d1554da7cd4b1c5cb1aa788d82df37c0694eN.exe
    "C:\Users\Admin\AppData\Local\Temp\b043e3e0d2f9b4879ebfb607d583d1554da7cd4b1c5cb1aa788d82df37c0694eN.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:2284
    • 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:1072

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\1384.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

  • C:\Users\Admin\AppData\Local\Temp\5C3A.tmp

    Filesize

    1KB

    MD5

    7e84ae9f826bda403fb4aaee132dac82

    SHA1

    c33a118c6ab4a0451486ca534f2fae8cfa0f7c88

    SHA256

    fb1c7e24d2bc383af12f429190d2c2890fb553ae765379351fb44b8af0c4c017

    SHA512

    d0f2da188eda2340d561fc020cb2934ce308d81b62575592dcdefc4321bf86f3c142d6b335830a585c049902627ca670a555ea9266720ea5324e9261c00db027

  • \Windows\AppPatch\svchost.exe

    Filesize

    686KB

    MD5

    630346fd2432c01a4d515835b7b5d2ef

    SHA1

    8bb6decd380f2fc3364f9ed38c254dfeefa4ad47

    SHA256

    1ea9aebc0de626db8b3f1a6585798efeb8f2d5c3d7b468e59324381dc5670f00

    SHA512

    1aac647d929c01f7a4270d260e47fc6221adc5929671f872ce2134dc56de860f62c2cdb7d3c12183692162929db8247ed7e9d1c7aaa6056c1f31df631ae0864b

  • memory/1072-16-0x00000000021D0000-0x0000000002278000-memory.dmp

    Filesize

    672KB

  • memory/1072-24-0x00000000021D0000-0x0000000002278000-memory.dmp

    Filesize

    672KB

  • memory/1072-22-0x00000000021D0000-0x0000000002278000-memory.dmp

    Filesize

    672KB

  • memory/1072-20-0x00000000021D0000-0x0000000002278000-memory.dmp

    Filesize

    672KB

  • memory/1072-18-0x00000000021D0000-0x0000000002278000-memory.dmp

    Filesize

    672KB

  • memory/1072-14-0x00000000021D0000-0x0000000002278000-memory.dmp

    Filesize

    672KB

  • memory/1072-27-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-30-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-28-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-40-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-60-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-76-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-78-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-75-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-72-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-70-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-68-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-67-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-65-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-63-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-62-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-61-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-59-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-58-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-56-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-55-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-53-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-51-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-50-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-48-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-47-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-45-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-44-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-43-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-42-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-77-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-41-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-74-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-73-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-71-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-69-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-66-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-64-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-39-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-57-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-38-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-37-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-54-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-52-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-36-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-49-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-35-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-46-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-34-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-32-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-33-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/1072-198-0x0000000002380000-0x0000000002436000-memory.dmp

    Filesize

    728KB

  • memory/2284-12-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB