Analysis

  • max time kernel
    143s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-01-2025 19:11

General

  • Target

    03255d728d33548bd79bb9803365e98d541724e189fea335b6b559a14360018e.exe

  • Size

    686KB

  • MD5

    bdeb21099972ef002211fa663a884ebd

  • SHA1

    fbd3462280f18626fa9951178a2fc3bff6e9da00

  • SHA256

    03255d728d33548bd79bb9803365e98d541724e189fea335b6b559a14360018e

  • SHA512

    5dc68ad0aa12d8f9ed6f1a977cdfea7694ba2499be4c42399da64cddb92db3c60cf3289c05b56e35c1e16aaf7e3ea04692ede032d46ebf8a68c9772ea92d76cc

  • SSDEEP

    12288:TmWhND9yJz+b1FcMLmp2ATTSsdApVHyGbs2CYPHrLpVmCbHDSgpH:TmUNJyJqb1FcMap2ATT5itjCYZ3DSoH

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\03255d728d33548bd79bb9803365e98d541724e189fea335b6b559a14360018e.exe
    "C:\Users\Admin\AppData\Local\Temp\03255d728d33548bd79bb9803365e98d541724e189fea335b6b559a14360018e.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:744
    • 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:3596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VKYZDMA5\login[1].htm

    Filesize

    168B

    MD5

    d57e3a550060f85d44a175139ea23021

    SHA1

    2c5cb3428a322c9709a34d04dd86fe7628f8f0a6

    SHA256

    43edf068d34276e8ade4113d4d7207de19fc98a2ae1c07298e593edae2a8774c

    SHA512

    0364fe6a010fce7a3f4a6344c84468c64b20fd131f3160fc649db78f1075ba52d8a1c4496e50dbe27c357e01ee52e94cdcda8f7927cba28d5f2f45b9da690063

  • C:\Users\Admin\AppData\Local\Temp\1075.tmp

    Filesize

    593B

    MD5

    3b03d93d3487806337b5c6443ce7a62d

    SHA1

    93a7a790bb6348606cbdaf5daeaaf4ea8cf731d0

    SHA256

    7392749832c70fcfc2d440d7afc2f880000dd564930d95d634eb1199fa15de30

    SHA512

    770977beaeedafc5c98d0c32edc8c6c850f05e9f363bc9997fa73991646b02e5d40ceed0017b06caeab0db86423844bc4b0a9f0df2d8239230e423a7bfbd4a88

  • C:\Users\Admin\AppData\Local\Temp\1075.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

  • C:\Users\Admin\AppData\Local\Temp\1EB3.tmp

    Filesize

    42KB

    MD5

    a78aea00a8fd5c529df26e6c901de176

    SHA1

    282a77b9c7b73ec0c3038dc5dc23ec1234f77078

    SHA256

    22554ac4a230c46e8761894efaae3a0e16e1d7e2819d3520eeb41ce85e00c649

    SHA512

    668c69811c21fc14d80775a671261c6a169291d39f558d9d6e430a1204b535703845d8cdacfa55045a0e4d8b836b5d998719d32e35ed3f6972a098f8fcce49c7

  • C:\Users\Admin\AppData\Local\Temp\1F24.tmp

    Filesize

    61KB

    MD5

    3a861a8c867835660047ccdd8bb7239a

    SHA1

    0f9bae6c8b3ad4c12030fc74cdc65e88088e47d7

    SHA256

    dc19622aeecf905f747ec2803c1776d80fcd6e58f1e034581952f6cb55c17d64

    SHA512

    c81809ae6c390f0a0c36228071078f4884af444b3114a00c283fc9ce00f0c41d000c759b92d96901a386b235778c3bb7a1ddddcf3bf17cce7359c0e78aeec939

  • C:\Users\Admin\AppData\Local\Temp\CD8F.tmp

    Filesize

    12KB

    MD5

    e1f035b24ce0e8137682b703d19315b5

    SHA1

    18712fd6ad888c146237d187332ccc904ff1f032

    SHA256

    117ea4f0f411e1aaeab307c087a57678abcba7e6aa96a5bd1f2d5d7026d453a0

    SHA512

    17a428fcea9d064e8318f0ef30da88c713209f5d591d2a4e9725d56663acdb96996569693804071aea17ddc793eade219409c4548e48d1ddc8814662236bae7d

  • C:\Users\Admin\AppData\Local\Temp\CD8F.tmp

    Filesize

    12KB

    MD5

    caa300673c11a7627a7b6346e1a93b61

    SHA1

    7ecaf36f1e150c478b6cfc3446ec7f0c662c071a

    SHA256

    42ae110a0ecd0d83c4f12314d42a585354b501856dc3c7b483123fcbc317f2aa

    SHA512

    f11f1182d2fdc14b2c64e2221091e318f76c9a41824977c1a93bf2077300bba919ca4a01c80340c4c20d239ac6dbadf091f544891f0ec72df62a6cc11231faa6

  • C:\Windows\apppatch\svchost.exe

    Filesize

    686KB

    MD5

    bd74377ed70680ced9cc04152638f31d

    SHA1

    562ee43b714df17d62a8e69aa43630639821a856

    SHA256

    6b7d5d8c626d8652d76be9ac2f26cb26bf7a3ab64c9c1b79c5bb0e848cb90768

    SHA512

    08f5437fb04a0ef207be734b1e2ac894e49bc9d7961800da3c610dcbef72e68de4a4a49c87119a9ea3d21e24807ca7cb0429a4895e650afbc4b7100da6cbd0a4

  • memory/3596-49-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-44-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-17-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-23-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-68-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-73-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-72-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-71-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-70-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-69-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-67-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-66-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-65-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-63-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-29-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-61-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-60-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-59-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-58-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-57-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-56-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-55-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-53-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-52-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-51-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-50-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-13-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-48-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-47-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-46-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-45-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-11-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-43-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-42-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-41-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-38-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-37-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-36-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-35-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-34-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-33-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-32-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-31-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-30-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-28-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-27-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-25-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-24-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-22-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-21-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-20-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-19-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-18-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-54-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-15-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-10-0x0000000002A00000-0x0000000002AA8000-memory.dmp

    Filesize

    672KB

  • memory/3596-40-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-39-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-16-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-26-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB

  • memory/3596-167-0x0000000002BB0000-0x0000000002C66000-memory.dmp

    Filesize

    728KB