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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18/12/2024, 00:52

General

  • Target

    71cbc63b98b66476cfe1b22bbbe58708f55b2956b10d8c20c9ec9351b46ac11cN.exe

  • Size

    208KB

  • MD5

    bfba0821b087628fdb86cd1a779f98f0

  • SHA1

    ae252e625987c7be3982a768060912bbcd34e695

  • SHA256

    71cbc63b98b66476cfe1b22bbbe58708f55b2956b10d8c20c9ec9351b46ac11c

  • SHA512

    9621d508fee45525d07238725b440fd097ec851a7cd2c0e06efd5b50dfd03650a11ed03cda8933015662cdf9a43bbdb2fac7de178c0bb428a375aa2f18ba0aee

  • SSDEEP

    6144:LOYX27lPBA3YDMw4lj6idlMlwl7/79C87:LwBAy0rlMI5

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\71cbc63b98b66476cfe1b22bbbe58708f55b2956b10d8c20c9ec9351b46ac11cN.exe
    "C:\Users\Admin\AppData\Local\Temp\71cbc63b98b66476cfe1b22bbbe58708f55b2956b10d8c20c9ec9351b46ac11cN.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:2528
    • 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:1152

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\288A.tmp

    Filesize

    593B

    MD5

    926512864979bc27cf187f1de3f57aff

    SHA1

    acdeb9d6187932613c7fa08eaf28f0cd8116f4b5

    SHA256

    b3e893a653ec06c05ee90f2f6e98cc052a92f6616d7cca8c416420e178dcc73f

    SHA512

    f6f9fd3ca9305bec879cfcd38e64111a18e65e30d25c49e9f2cd546cbab9b2dcd03eca81952f6b77c0eaab20192ef7bef0d8d434f6f371811929e75f8620633b

  • C:\Users\Admin\AppData\Local\Temp\DBC8.tmp

    Filesize

    1KB

    MD5

    68afeb10b539a79a67a9bd27b8b7ef11

    SHA1

    7400911db6b5d5c79fbd1c958c159b029fe26f38

    SHA256

    255e8e86a3df8010fdd92c9d07e4c9dd8f7f96e00721d88da5338b0c1103fd88

    SHA512

    27df7b1ced179a94cb475f0915ce0760a64faea08aecd0e18ad0654457b0df0407f4791b549911c08c6f64ea6a2dcf3ce720f0c565c6eba9c286388653adeb02

  • C:\Users\Admin\AppData\Local\Temp\DBD8.tmp

    Filesize

    24KB

    MD5

    da482c2a354959e1394f3b4284d247bf

    SHA1

    ad96f7ab06a23ea75ede9d6bcaad114346f51c79

    SHA256

    363680926db53f069b8ffe30f2d45e6d47a38056262e8a01c8af9ba4b05ecbc6

    SHA512

    e4932adf10f0ec542e0775ef29a96f4eebe850c03ba93b2241b0a9877110f676476213ef38b18be29a5d7ce08a1a2aedfd50409610bef67950c19fba19464336

  • C:\Windows\AppPatch\svchost.exe

    Filesize

    208KB

    MD5

    d207cd82e8402dec8379c073fb3570b4

    SHA1

    4a5776c57ca90ae5c04b80aafbba0c04fd9f8968

    SHA256

    06ff379011b037d35e9212d697c7f9576ee98775121f9acbe98bc08f66b6d714

    SHA512

    b69d62229b470b2fd00ae4b0752b573cb959085affb6f7db4bc3dd1f2f163d4327175ec95c69846a29d83d028b0eabd218650b34cd005b6b8880bd67a2f75737

  • memory/1152-63-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-49-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-17-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1152-20-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1152-45-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-31-0x0000000002600000-0x00000000026A8000-memory.dmp

    Filesize

    672KB

  • memory/1152-33-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1152-26-0x0000000002600000-0x00000000026A8000-memory.dmp

    Filesize

    672KB

  • memory/1152-24-0x0000000002600000-0x00000000026A8000-memory.dmp

    Filesize

    672KB

  • memory/1152-28-0x0000000002600000-0x00000000026A8000-memory.dmp

    Filesize

    672KB

  • memory/1152-22-0x0000000002600000-0x00000000026A8000-memory.dmp

    Filesize

    672KB

  • memory/1152-38-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-36-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-34-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-40-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-50-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-83-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-82-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-80-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-78-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-77-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-75-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-73-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-71-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-70-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-69-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-68-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-67-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-66-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-64-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-41-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-58-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-32-0x0000000002600000-0x00000000026A8000-memory.dmp

    Filesize

    672KB

  • memory/1152-62-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-21-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/1152-56-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-54-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-53-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-52-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-51-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-60-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-48-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-47-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-84-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-81-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-79-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-76-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-46-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-74-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-72-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-65-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-44-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-61-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-43-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-59-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-57-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-42-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/1152-55-0x00000000027B0000-0x0000000002866000-memory.dmp

    Filesize

    728KB

  • memory/2528-1-0x0000000000250000-0x00000000002A1000-memory.dmp

    Filesize

    324KB

  • memory/2528-19-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2528-2-0x0000000000400000-0x000000000045F000-memory.dmp

    Filesize

    380KB

  • memory/2528-0-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/2528-18-0x0000000000250000-0x00000000002A1000-memory.dmp

    Filesize

    324KB

  • memory/2528-16-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB