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Analysis

  • max time kernel
    93s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/09/2024, 04:53

General

  • Target

    ef19ea04fa0737a4dcd5b70e337b3dca2d22298ac0ab288c2b66abee9820bb58N.exe

  • Size

    91KB

  • MD5

    c7996b5ad648f9da525fb5c6a0df7db0

  • SHA1

    995a13280c0006939adc202b75b2d7fae9c11fe3

  • SHA256

    ef19ea04fa0737a4dcd5b70e337b3dca2d22298ac0ab288c2b66abee9820bb58

  • SHA512

    11a34e7fd30f0c036a8e1d392537094d80534ae43f37e106d9f677fcca809a58877f80632e2cada22790b2843e27d8b11db9f047cfcfd7249f5f78cb24721fbd

  • SSDEEP

    1536:zAwEmBZ04faWmtN4nic+6GQAwEmBZ04faWmtN4nic+6G9:zGms4Eton0QGms4Eton09

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\ef19ea04fa0737a4dcd5b70e337b3dca2d22298ac0ab288c2b66abee9820bb58N.exe
    "C:\Users\Admin\AppData\Local\Temp\ef19ea04fa0737a4dcd5b70e337b3dca2d22298ac0ab288c2b66abee9820bb58N.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:4196
    • C:\Windows\xk.exe
      C:\Windows\xk.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4812
    • 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:5056
    • 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:4920
    • 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:3416
    • 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:3872
    • 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:4008
    • 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:5080

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    91KB

    MD5

    dd4607b556e29e063fb9ec0f3f2b29b4

    SHA1

    0441a3b18b8d48cd69dcbfb7f7fbbf1873a5c7e5

    SHA256

    f3e2651b2e58995eb5ce38fccc41997c83109ea1824d9dd4fa38b5eba82c9535

    SHA512

    cdec0acb48d49646d17454ea1f8c6b39f1d53e890adb5af33d1c12e86cc09b2ac63bef6fd6cf036b421b16445db23eabea8856d96847feaff0b0436215aced71

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

    Filesize

    91KB

    MD5

    3f3eb1d41ffb6a559088968e45cb52b8

    SHA1

    1beb966c2680270b0e1fcbc04b6baea16e6e6997

    SHA256

    8774427b3115d8362cb574dfc66e4ff36995a13831e50532e33f2adbd273b6ab

    SHA512

    b1fd40328c54667dbffb9a02ae5fb2abcfaaa6dd7d74d78f131da72bea0009a900ab952ed180daa0e9a20409aeb4e0061348637322ad1edf88ba04048dc1611d

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

    Filesize

    91KB

    MD5

    fc0247e60619b2ad696e86f1a10c0749

    SHA1

    4330cca7179b763754222747835705f2973c56e7

    SHA256

    bdbdf4a6d7014a3675158da96fcd5bd037a9611be48c78eccc553f4132178f66

    SHA512

    026aa6b3465ca9bb6c582a60dde254a3e47be6a8d5e4aa9299ed112854d498369747ae285abb00695fd35e64c2584b91b42ea98725766b8a8f09fdfcd9a222c0

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

    Filesize

    91KB

    MD5

    4e7ded1fc6d3be21a2182d44bc913ab4

    SHA1

    dd9e10cf4777dfb592b22d54cb30597d0dfc0e8a

    SHA256

    456fff603dcbaaf14773d83df8226f1217e7ed0f82b6787ab919fbd75f52a0b0

    SHA512

    ab865735c7522559cb8b8315284b89d644152e1ba9e374ff1a2fd7cf41c94dd9e95fad4f616c4d8a5f67b9f15876abc0ce063c70b50ff4d6f696f810bf4b18d2

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

    Filesize

    91KB

    MD5

    c7996b5ad648f9da525fb5c6a0df7db0

    SHA1

    995a13280c0006939adc202b75b2d7fae9c11fe3

    SHA256

    ef19ea04fa0737a4dcd5b70e337b3dca2d22298ac0ab288c2b66abee9820bb58

    SHA512

    11a34e7fd30f0c036a8e1d392537094d80534ae43f37e106d9f677fcca809a58877f80632e2cada22790b2843e27d8b11db9f047cfcfd7249f5f78cb24721fbd

  • C:\Users\Admin\Local Settings\Application Data\WINDOWS\LSASS.EXE

    Filesize

    91KB

    MD5

    14fcd45ea706ae9b664044a5ad54c144

    SHA1

    9331178c6bab5e1496cd15c1636e6c3fe40bcd52

    SHA256

    ccbc8db3fbdb488573f3a8a957b93f5631ee59cb94b9854f541bc2aef06b251a

    SHA512

    d00bcfe99fba12add57862d096688202c99a872bef693c83a1121c4978069a10e09e451642c6be592356a93c2d65d8aec98cfd807583e8b0fab9b5fe572b3a45

  • C:\Windows\SysWOW64\IExplorer.exe

    Filesize

    91KB

    MD5

    334f6b5858bbbc5991fa33671b90e4ea

    SHA1

    7a458e3c46964a49b82fbe55727d20c38d25a7d6

    SHA256

    7eb64546b44a8328c7087decdc8d53f8b7ce41b6401d376affb7bee030793f6d

    SHA512

    d8845f0feca6c351041a1c3e8a70bcf9a2bc48d25e0969b487ad115ca05930a5a593bbe1504070a2289c8f2699e6b32be2300d0a94e739d9821a433f06b0e6dc

  • C:\Windows\xk.exe

    Filesize

    91KB

    MD5

    a3dacfb0d0c7c8f2a92ee80fd1b2dbd0

    SHA1

    2b776f516aa841d094c68259096964c42b637082

    SHA256

    a1e53bb00844fbf50940f214a5097e30e990d6abce64dc23cbb7ae182fe2f28c

    SHA512

    154518d49261f6aa3d133eb9b3d65925239bfdb1c8f72a9f0a484ba755033c3d5c4a8c0d7d11c8f94059512bb18099b3bd484dbfe61c57a3ead8d37104b58425

  • memory/3416-129-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/3872-135-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4008-139-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4008-142-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4196-0-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4196-151-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4812-112-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/4920-122-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/5056-116-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB

  • memory/5080-149-0x0000000000400000-0x000000000042E000-memory.dmp

    Filesize

    184KB