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Analysis

  • max time kernel
    31s
  • max time network
    44s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/09/2024, 20:38

Errors

Reason
Machine shutdown

General

  • Target

    33c5a2ff947db985a3608085144c10b60ef494d7e7a4c45b68570d4a4081d994N.exe

  • Size

    91KB

  • MD5

    c133595b77881491e17c14fc84e3e9d0

  • SHA1

    0cdeb6d46354527e71287b09d93adc75c7117896

  • SHA256

    33c5a2ff947db985a3608085144c10b60ef494d7e7a4c45b68570d4a4081d994

  • SHA512

    54b39c02759ee7ec0a95b4005dbe9e52d01f662dc0809fb72668021ceb86b6ca2063403c69ce8f9ce2f5197b4e20bfd83c5765aad17079f7f03cdc0700b7f8c1

  • SSDEEP

    1536:1AwEmBT4JzRJwEeUW7f12xULgJzUAwEmBT4JzRJwEeUW7f12xULgJzY:1Gml41LBu7f1WNUGml41LBu7f1WNY

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables use of System Restore points 1 TTPs
  • Executes dropped EXE 7 IoCs
  • Modifies system executable filetype association 2 TTPs 13 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Drops file in System32 directory 6 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Control Panel 4 IoCs
  • Modifies registry class 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33c5a2ff947db985a3608085144c10b60ef494d7e7a4c45b68570d4a4081d994N.exe
    "C:\Users\Admin\AppData\Local\Temp\33c5a2ff947db985a3608085144c10b60ef494d7e7a4c45b68570d4a4081d994N.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • Disables RegEdit via registry modification
    • Modifies system executable filetype association
    • Adds Run key to start application
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4228
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:928
    • C:\Windows\SysWOW64\IExplorer.exe
      C:\Windows\system32\IExplorer.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3636
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\WINLOGON.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4820
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\CSRSS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:840
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SERVICES.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4712
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3336
    • C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE
      "C:\Users\Admin\Local Settings\Application Data\WINDOWS\SMSS.EXE"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:3928

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\WINDOWS\CSRSS.EXE

    Filesize

    91KB

    MD5

    ae1866010668e714b0d02dff08c47271

    SHA1

    9b2c4109456366168593cf4f4b1a438602d8dd2c

    SHA256

    160fae917e7b6c4cb597e242c63edcbaf4b32ad0028ef29fdc8187f4960ce30f

    SHA512

    571f124a2ac8e8f8620c906c7c5bd3898db2a9d9d8b46f4d5285b419827eb8914bc80ab200dcc3590783c538f9df100231f33bd1b0030a12cfed0401cefc0f46

  • C:\Users\Admin\AppData\Local\WINDOWS\LSASS.EXE

    Filesize

    91KB

    MD5

    eb741daa943738fcc950db568da0edae

    SHA1

    80780ba3466d004b6cada45d52b3df85a06e4e18

    SHA256

    a998391b27dad6a448e16ee403c4a732994390cff1bb1b908aed95dbeecdbda5

    SHA512

    ec61d1dfba5e55ba331a1ba34958d4abbee887698867b8e1f443cae1da4172232e8533f447c0a9fe47545489d9a30e3b88b044688d83f31bbb62fb3dc8fce354

  • C:\Users\Admin\AppData\Local\WINDOWS\SERVICES.EXE

    Filesize

    91KB

    MD5

    cce3df32fcad101c5aef74bac87d8e12

    SHA1

    d0e983a45e18e65307a60e2b5f270f0961514fb6

    SHA256

    0becf0e590c776dfc8ee8dff7c2ebb426860049a3640a3d68da8f857ba57f796

    SHA512

    61527a23f76a50ac78cbdfce58df84680fb992a36060297395231c62c4e4c11a04afad5ae0e81d48f60756a1880935d6ccfe4dfba57908b6d48b590a578a3330

  • C:\Users\Admin\AppData\Local\WINDOWS\SMSS.EXE

    Filesize

    91KB

    MD5

    4ced82eb0cca389fbc19be8ff4974860

    SHA1

    176729bf3de3b7e8b920a62ae64c7a9c0af1cd28

    SHA256

    8970cddbd8a02e200022d324e56a9c855d139ac9a62136c8c7484f2a543b723d

    SHA512

    5597d9e4f198218f745ee01bd9cf8c79eb14e835aee5a57eb314a818b5d3db8e8aadad80ae47b17041fa84d0c175b845090aa4cfd66c588ffdf35dc317a84cc6

  • C:\Users\Admin\AppData\Local\WINDOWS\WINLOGON.EXE

    Filesize

    91KB

    MD5

    648d6dc8cf543814946b66cb256e934b

    SHA1

    501ae7f9c24bdfb793c23ccd0188c6e5e64be0fb

    SHA256

    446b5a6c8b4bdd38b78ab25452154b927217ae4f12cf6df57ade72dcba649ade

    SHA512

    e93d3fb7c1cf94517b6a7c04ad464d4d826b707a7becd26182c33099e7b5c2c35816d5881409a814446bddafa08b8efde7ddeabf684dc95e7e797c5bc50fd1d1

  • C:\Users\Admin\AppData\Local\winlogon.exe

    Filesize

    91KB

    MD5

    c133595b77881491e17c14fc84e3e9d0

    SHA1

    0cdeb6d46354527e71287b09d93adc75c7117896

    SHA256

    33c5a2ff947db985a3608085144c10b60ef494d7e7a4c45b68570d4a4081d994

    SHA512

    54b39c02759ee7ec0a95b4005dbe9e52d01f662dc0809fb72668021ceb86b6ca2063403c69ce8f9ce2f5197b4e20bfd83c5765aad17079f7f03cdc0700b7f8c1

  • C:\Windows\SysWOW64\IExplorer.exe

    Filesize

    91KB

    MD5

    fb3c0fb44eccb3561d21cf3b1dedddfa

    SHA1

    d000c907bc9bdbb6fbe1d16f7135a818df34e55a

    SHA256

    f0a7dbb5fb91f555cb9f740c9509de83766a72cd6c44ae6e19a9ada83b5518ca

    SHA512

    42c8f163b320559d9623273ae458bb516acae06507532f79c44d82a695a50d199839e6a18a385dd598e30736b4119d6c988f19e4cc2a71bfac51328f4dc27618

  • C:\Windows\xk.exe

    Filesize

    91KB

    MD5

    73dd5712d90cd8deab320b05279f6a1f

    SHA1

    f8eafe6db43b8909ff1bab8c48f97eb50d603b86

    SHA256

    99eb5162c0c1992c8081891ad0b46f7e6ecab991335ddecb03f11058dea39e19

    SHA512

    0023f1b7ae96842c573e213bc7adaf3413f9531659d71e55ca4458bc28097e2a1d6545019539872d9f94f749efa364f768d24d16fecb589b9715f8e1e95bc82a

  • memory/840-130-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/928-113-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3336-144-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3636-117-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3928-151-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4228-0-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4228-153-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4712-134-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4712-137-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4820-123-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB