Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-01-2025 14:40

General

  • Target

    f1d40ddd3ed87bf8d4f0694b410fddae8ead07eaa025c2c04fd69d2440a885fdN.exe

  • Size

    218KB

  • MD5

    dc8f323dc5568dbe7b2f27fb52c13520

  • SHA1

    289e0fb5695a286f8f23a02cbf3a7ac4d062e001

  • SHA256

    f1d40ddd3ed87bf8d4f0694b410fddae8ead07eaa025c2c04fd69d2440a885fd

  • SHA512

    b18ac02eab5ca1e90c5010b9f6b00fdfb2505a87826e9f44226a3266fa50c69f625cae411eedaa9c1b896d9f977ea5c05b1788b6a01c9eba5eccd6cdf43ae68f

  • SSDEEP

    6144:XEQBDdO1z7L/EIhZDE9oLfFWlMZT7+DGaMwIC:XEGDdQNHEwWlMxYG/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
  • 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\f1d40ddd3ed87bf8d4f0694b410fddae8ead07eaa025c2c04fd69d2440a885fdN.exe
    "C:\Users\Admin\AppData\Local\Temp\f1d40ddd3ed87bf8d4f0694b410fddae8ead07eaa025c2c04fd69d2440a885fdN.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:4972
    • 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:4780

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\88B3.tmp

    Filesize

    593B

    MD5

    3b03d93d3487806337b5c6443ce7a62d

    SHA1

    93a7a790bb6348606cbdaf5daeaaf4ea8cf731d0

    SHA256

    7392749832c70fcfc2d440d7afc2f880000dd564930d95d634eb1199fa15de30

    SHA512

    770977beaeedafc5c98d0c32edc8c6c850f05e9f363bc9997fa73991646b02e5d40ceed0017b06caeab0db86423844bc4b0a9f0df2d8239230e423a7bfbd4a88

  • C:\Users\Admin\AppData\Local\Temp\88B3.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

  • C:\Windows\apppatch\svchost.exe

    Filesize

    218KB

    MD5

    fd7a68507eb59fd2db0153490a0e88ce

    SHA1

    8e00e91abbc0173f4d97d68a2685c34f02a55521

    SHA256

    6f1f2ca149d7890eab898eb5ed1ba3c5cad8a5a293655d0c4ea4663be651189a

    SHA512

    51e832a65106c323fce1fd2b84f015d902298c1045c0946dcc662695f8bb4d3a9453f99b32ee901604f6cfe848af5cf7ffb2de578964419dabcc352ec0486b13

  • memory/4780-55-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-22-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-12-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/4780-53-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-32-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-52-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-19-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/4780-20-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-24-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-51-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-26-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-59-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-78-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-77-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-76-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-75-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-74-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-73-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-72-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-71-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-70-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-69-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-67-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-66-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-65-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-64-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-63-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-62-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-61-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-60-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-58-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-57-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-56-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-17-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/4780-16-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/4780-25-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-18-0x0000000002C00000-0x0000000002CA8000-memory.dmp

    Filesize

    672KB

  • memory/4780-50-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-49-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-48-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-47-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-46-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-45-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-44-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-42-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-41-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-40-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-39-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-38-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-37-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-36-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-35-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-34-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-33-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-31-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-30-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-79-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-29-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-28-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-68-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-27-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-54-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4780-43-0x0000000002DF0000-0x0000000002EA6000-memory.dmp

    Filesize

    728KB

  • memory/4972-15-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/4972-2-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/4972-1-0x0000000002440000-0x0000000002491000-memory.dmp

    Filesize

    324KB

  • memory/4972-0-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB

  • memory/4972-14-0x0000000002440000-0x0000000002491000-memory.dmp

    Filesize

    324KB

  • memory/4972-13-0x0000000000400000-0x00000000006D0000-memory.dmp

    Filesize

    2.8MB