Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    07-01-2025 04:28

General

  • Target

    e5fcc8c40cd23070b80fc17ea9d519f3590e1e844a61f0cda34a3b4bbeb75d1fN.exe

  • Size

    218KB

  • MD5

    1b0d186afebf08566953e303904709c0

  • SHA1

    78dd762dc655562618c0552d90f3e922b18a5305

  • SHA256

    e5fcc8c40cd23070b80fc17ea9d519f3590e1e844a61f0cda34a3b4bbeb75d1f

  • SHA512

    d68c3e45070d05e8dc19ef9e8ab223717c3fe22f842be24062358bfd17c81cf3e7f730b5042686444dd4d0b8d219edecd6f8fcd5ef1534022764764e3f351f4b

  • SSDEEP

    6144:HEQBDdO1z7L/EIhZDE9oLfFWlMZT7+DGaMwIC:HEGDdQNHEwWlMxYG/wI

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\e5fcc8c40cd23070b80fc17ea9d519f3590e1e844a61f0cda34a3b4bbeb75d1fN.exe
    "C:\Users\Admin\AppData\Local\Temp\e5fcc8c40cd23070b80fc17ea9d519f3590e1e844a61f0cda34a3b4bbeb75d1fN.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:2104
    • 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:1084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3E94.tmp

    Filesize

    24KB

    MD5

    3d79a2377bdc1540ace9e14e6380f4b4

    SHA1

    0c4147ecca3cc19eb9e603f4f64e3618854d030c

    SHA256

    e08e46e597d4940a140e6463429bb56aec9c24dd2f606dfde178d4f01c4fff3b

    SHA512

    ae0a18c8d86d30988337b823ae664db3bea45e90ada06738ec34a03714b3d3b1b3f562ffbc55026a10c57bf39f94c139c6aa90142af689396e4ade3f61dd4daa

  • C:\Users\Admin\AppData\Local\Temp\B591.tmp

    Filesize

    42KB

    MD5

    f34a84a820a6be64c73220fb1b9887d5

    SHA1

    0d5d9221acaeaca98839954b4c1c9d735cf35b6a

    SHA256

    8efee5d69c0e23d88292f814b9de2df456979154711cd13a3b5bd72bebe37299

    SHA512

    13e09b71f584f461dc1b0f3b96aeadf632b260df7e59f0203bc6d298001bcad1743fd5a89df7696a7c2f02154a707656572f9fe1f328bef17bec2310fd695f83

  • C:\Users\Admin\AppData\Local\Temp\C2F6.tmp

    Filesize

    12KB

    MD5

    caa300673c11a7627a7b6346e1a93b61

    SHA1

    7ecaf36f1e150c478b6cfc3446ec7f0c662c071a

    SHA256

    42ae110a0ecd0d83c4f12314d42a585354b501856dc3c7b483123fcbc317f2aa

    SHA512

    f11f1182d2fdc14b2c64e2221091e318f76c9a41824977c1a93bf2077300bba919ca4a01c80340c4c20d239ac6dbadf091f544891f0ec72df62a6cc11231faa6

  • C:\Users\Admin\AppData\Local\Temp\D649.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

  • C:\Windows\AppPatch\svchost.exe

    Filesize

    218KB

    MD5

    5052344f5f3a9d1545a22244c9e075bc

    SHA1

    50dadf2a90eaad8da1259ad32eea4fe06ddb5e24

    SHA256

    2212957e28c72be771311c94870fafbfdc21c1aed027a1cb11b4f0930ed0fbb6

    SHA512

    b29507a2c62dfa6910edb7b8d4f6f552f604d96d572f708c69ebf1b63e68ca18f33f5b74ebce94b2bd36122b0474a5aa8b9788fc877b52e4b4d39ea3a069dfd7

  • memory/1084-70-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-32-0x0000000002300000-0x00000000023A8000-memory.dmp

    Filesize

    672KB

  • memory/1084-19-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/1084-69-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-21-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/1084-30-0x0000000002300000-0x00000000023A8000-memory.dmp

    Filesize

    672KB

  • memory/1084-33-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/1084-28-0x0000000002300000-0x00000000023A8000-memory.dmp

    Filesize

    672KB

  • memory/1084-26-0x0000000002300000-0x00000000023A8000-memory.dmp

    Filesize

    672KB

  • memory/1084-24-0x0000000002300000-0x00000000023A8000-memory.dmp

    Filesize

    672KB

  • memory/1084-67-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-34-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-36-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-38-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-41-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-51-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-83-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-84-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-81-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-80-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-79-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-78-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-77-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-76-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-75-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-74-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-73-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-72-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-71-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-68-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-20-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/1084-40-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-22-0x0000000002300000-0x00000000023A8000-memory.dmp

    Filesize

    672KB

  • memory/1084-66-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-65-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-64-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-63-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-62-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-61-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-60-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-59-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-58-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-57-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-56-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-55-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-54-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-82-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-53-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-52-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-50-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-49-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-48-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-47-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-46-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-45-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-44-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-43-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/1084-42-0x00000000025F0000-0x00000000026A6000-memory.dmp

    Filesize

    728KB

  • memory/2104-0-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/2104-1-0x0000000000220000-0x0000000000271000-memory.dmp

    Filesize

    324KB

  • memory/2104-17-0x0000000000220000-0x0000000000271000-memory.dmp

    Filesize

    324KB

  • memory/2104-18-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2104-2-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2104-16-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB