Analysis

  • max time kernel
    93s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/09/2024, 10:36

General

  • Target

    95f074c0032b153e2cfff58cf8d4f5e4d1894df272692fb3cd65527cc84033ffN.exe

  • Size

    91KB

  • MD5

    26c2701dd9f51b47452eef3c5c9b3b60

  • SHA1

    a925fa09e6f938f7ddd90227253b4765cc6d4dd6

  • SHA256

    95f074c0032b153e2cfff58cf8d4f5e4d1894df272692fb3cd65527cc84033ff

  • SHA512

    6c7364f682cf762a8e792447d93586d98df9d4200cb2e5c46b66f0f55ec57f419a33f9454e643fd5902d8d4be862ff97009d401388a6a5f25d74fbfd9fab89a6

  • SSDEEP

    1536:8AwEmBj3EXHn4x+9aa3AwEmBj3EXHn4x+9aR:8GmF3onW+Ma3GmF3onW+MR

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\95f074c0032b153e2cfff58cf8d4f5e4d1894df272692fb3cd65527cc84033ffN.exe
    "C:\Users\Admin\AppData\Local\Temp\95f074c0032b153e2cfff58cf8d4f5e4d1894df272692fb3cd65527cc84033ffN.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:5088
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2916
    • 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:3940
    • 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:728
    • 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:4456
    • 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:2728
    • 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:3540
    • 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:3412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    91KB

    MD5

    e680fa2624f87f5c1b30acda793561ac

    SHA1

    a5096e25d261c290dd2a27b4df5918a675e6ad20

    SHA256

    31ad90cdd3eba467e9dfaab1186f28cc996696367addda80f2dfc5f2de111856

    SHA512

    d52e354850d719f7a014b8ad66a0c21c33c3d935218d8a58a1300c8d526c0ef3a0db293e96af250013d420ee782041c040a8dc7aa23ad27f20224279e0566c7e

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

    Filesize

    91KB

    MD5

    3b34c9d5d537bd7243584ef5fdafbbc0

    SHA1

    4e1755632a9cdf978d4665431aa950c4161f930e

    SHA256

    9511b1d7960a448db7d84a542c347ae78294cad86646e762093503849057991e

    SHA512

    e4c2c8cd1d5202bbd3ddda5329d7153668d4f61c761547cc90a7fe091b819a82c7efab9b7826b7c6037c9ec2316f1e9dbadb8407345c259e38ea24f0aa1ca373

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

    Filesize

    91KB

    MD5

    5bdf19d85dd18556539d89b0461ab6aa

    SHA1

    d1b665ef43727195a84b6e44a36b16d6fff79e64

    SHA256

    ea1a57087b4162470ec57f530a2c59a31acefb6e694bd2f6cd26bdfbf8811dff

    SHA512

    0b37b7c6567f1cce22d041775d1ccfe3160be494af39c4f4a1bb45a3af9942a88aa2136c8502e818c0a697b28c659c9a7530d2684b86c7ac90ccace8190740cf

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

    Filesize

    91KB

    MD5

    a60582abf62f08dc703fc2aced2713f7

    SHA1

    e92eca564841f04acb44d4351e0e1b68534fb2e5

    SHA256

    14ac994c628581e8fd0ce91a4c503e98f3a2965f21259e96a95e0bffd6edad9f

    SHA512

    f1b8a33f326f8ab2050d7735b3abed3a0e7b86ab0f0b5f3ccb3d9ea3beb55dcb72056e121001a429790c52ec7864a91bf7a8584fbfb2c7f26bf9ccc957a8346a

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

    Filesize

    91KB

    MD5

    3724778f30b2ce536e1717d46cf9af87

    SHA1

    f93824fa5ef86e445280af4b229f5057f553f524

    SHA256

    3db0e12ac12f9d48dbc803db60820d0f9f5f2d4a0d48d3fa54f0704308bb54c2

    SHA512

    68135654d9ae7641ee39b75c87cb156f42a059e518cb88d0a279ff4327fcce6e38049b0489b1c7525a5607dccd046dc9bb57022fdad161732ead14143b665b37

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

    Filesize

    91KB

    MD5

    26c2701dd9f51b47452eef3c5c9b3b60

    SHA1

    a925fa09e6f938f7ddd90227253b4765cc6d4dd6

    SHA256

    95f074c0032b153e2cfff58cf8d4f5e4d1894df272692fb3cd65527cc84033ff

    SHA512

    6c7364f682cf762a8e792447d93586d98df9d4200cb2e5c46b66f0f55ec57f419a33f9454e643fd5902d8d4be862ff97009d401388a6a5f25d74fbfd9fab89a6

  • C:\Windows\SysWOW64\IExplorer.exe

    Filesize

    91KB

    MD5

    5ecb6b708901b4c04a5d18ef949bc4c9

    SHA1

    c8b20b7754b6e350c3a519e180c0bc251630e822

    SHA256

    53a8595e0dbc3a6df79f334a2c7639e73b1038be15d310948ae704630a7052b0

    SHA512

    c625777d9a15d536dc627d8981b15cb30d008048247193c44318d10b5bfeb524fb4b72a169db0c78c0edccc8c13986b4b4bd880cbbc801b432d003f991dd4b16

  • C:\Windows\xk.exe

    Filesize

    91KB

    MD5

    0fbe9fb930e41a462b6f2725e9a2aa0a

    SHA1

    8558690d1973e94d89d4d6502a48380dbe8949dd

    SHA256

    34bfe546a159b7ccfce921cf58010d49b202832cdca42a94add1e9007da151f0

    SHA512

    80668345cf0cf1d04636e63a2ba59ad5d741d9a1a1e2b45c4f78975a8e7b09e1d6b40e6a5acec38b471e2aa102a52b4a5834ed0056ece8a21f74691372cba616

  • memory/728-124-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2728-137-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/2916-110-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3412-151-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3540-145-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3940-119-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3940-114-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4456-130-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/5088-0-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/5088-153-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB