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Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    23/01/2025, 10:03

General

  • Target

    f3caab558955808ba1fed486a32e2aad178e98a1534b6b28cc9b7ee5a71ee4c8N.exe

  • Size

    208KB

  • MD5

    549264405baa00f4c2f55929f29fb580

  • SHA1

    636b8602680407fb04bf33b0ccad690fbf06f8ce

  • SHA256

    f3caab558955808ba1fed486a32e2aad178e98a1534b6b28cc9b7ee5a71ee4c8

  • SHA512

    243333766df0d621140a80ad4c1c5ab278fdc622eb6d5177e0fadda642225f742095e2de2659398e6621b0b7ab5451262d752a70f1032ab47958450349caa3f4

  • SSDEEP

    6144:VJRDxRqdSqQts6iRZsTZuDbhivDVDN8zqF3:VcjQKUZigDVJ5

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\f3caab558955808ba1fed486a32e2aad178e98a1534b6b28cc9b7ee5a71ee4c8N.exe
    "C:\Users\Admin\AppData\Local\Temp\f3caab558955808ba1fed486a32e2aad178e98a1534b6b28cc9b7ee5a71ee4c8N.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:2548
    • 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:2328

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    24KB

    MD5

    2c07d691de1e875299c73bdd514fde6b

    SHA1

    73d78a298701a8b2c17ac1ecc46365d283834b2a

    SHA256

    d84222e35f0f6a4a33a5a30f14f8727b6c1e42931076417d27b1fc16663fd82e

    SHA512

    59b84bc2361e70692f77e2ab8d56dc94364a2ccd66c019c488135704f99e5c2a48ecbf4ca5a41f8fd444b9d0d2be20f7b745f5b2b9bd2ea1941776000affc4ba

  • C:\Users\Admin\AppData\Local\Temp\BD40.tmp

    Filesize

    42KB

    MD5

    99e1db3c02d5e188aedba6e782fc3026

    SHA1

    868c83f3556edebaf4fc164ea27bd433badb2494

    SHA256

    5f36ecd10f2d15bf2ef78b163f5340391be84cace0ceacbc27855ef6c066674a

    SHA512

    98b24760603c0190cfcac25cc25c1e8cf811cb963d5009703d4b3c038a3c5b54ca8015522d4cc2f87bdc536f2ee75456833ef5085fd6750288631b26ed67f4ed

  • C:\Users\Admin\AppData\Local\Temp\BD70.tmp

    Filesize

    481B

    MD5

    8c2cc3a76a1e0e5e7eace2257f02f121

    SHA1

    a8045ed3c73b0231d5675ba43d9a9652880c2d61

    SHA256

    6ce9b8f7347bd3cbdcbd0089305355075a071a35c90c94a1a1a592e7b65e424c

    SHA512

    481881cdb64b586db8fbe340d25fbd04789eaae525e8e85facdd02964e74526bbba3449a7a7b441301b1577a81257c3de4abfb5c234d0331441e6ec86e822d32

  • \Windows\AppPatch\svchost.exe

    Filesize

    208KB

    MD5

    8dfbd325a7bded11c53785397b01d74c

    SHA1

    6820d03ef3b7c4f3f9b7d58b8f9a85822410eef4

    SHA256

    c32d14bde7df7693986a2513539a261a25319176c8707980862954f228cc3016

    SHA512

    d54deace9d16c02258b097f08c11f7f876fd5871b0b5574b21327c42134aba1d05bfbd496f1bb7857c82954849e8e09894ef9416e639501c93430a42b9cd597f

  • memory/2328-69-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-58-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-19-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/2328-20-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/2328-24-0x0000000000500000-0x00000000005A8000-memory.dmp

    Filesize

    672KB

  • memory/2328-30-0x0000000000500000-0x00000000005A8000-memory.dmp

    Filesize

    672KB

  • memory/2328-28-0x0000000000500000-0x00000000005A8000-memory.dmp

    Filesize

    672KB

  • memory/2328-26-0x0000000000500000-0x00000000005A8000-memory.dmp

    Filesize

    672KB

  • memory/2328-33-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/2328-32-0x0000000000500000-0x00000000005A8000-memory.dmp

    Filesize

    672KB

  • memory/2328-34-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-36-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-38-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-44-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-66-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-68-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-84-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-82-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-81-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-80-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-79-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-78-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-77-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-76-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-75-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-74-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-73-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-72-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-71-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-70-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-40-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-65-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-22-0x0000000000500000-0x00000000005A8000-memory.dmp

    Filesize

    672KB

  • memory/2328-21-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/2328-64-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-63-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-62-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-61-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-60-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-59-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-67-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-57-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-56-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-54-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-53-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-52-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-51-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-50-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-83-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-49-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-48-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-47-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-46-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-45-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-43-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-42-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-55-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2328-41-0x0000000002310000-0x00000000023C6000-memory.dmp

    Filesize

    728KB

  • memory/2548-0-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/2548-2-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2548-1-0x0000000000270000-0x00000000002C1000-memory.dmp

    Filesize

    324KB

  • memory/2548-16-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/2548-18-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2548-17-0x0000000000270000-0x00000000002C1000-memory.dmp

    Filesize

    324KB