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Analysis

  • max time kernel
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/01/2024, 05:58

General

  • Target

    2024-01-10_f180dc70e31f8cc93ec20d9ed7847bf9_cryptolocker.exe

  • Size

    47KB

  • MD5

    f180dc70e31f8cc93ec20d9ed7847bf9

  • SHA1

    a4f86ef04f50babf9f13525dc401962478d91ee7

  • SHA256

    4edde326852f85dcd5bf8c419d25df85eb2fae59ded83f8b80a4cab17d5b91e5

  • SHA512

    bd9c7eabfe913926a442dc3a8db20e117ffc88e3cd85d8e6f303549bd7b7ad31bf4ece8f458437bf46b2b8babb57642cc46327f1be61dcbe3ccccaf54cc27128

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLtldeddKyYWZ:xj+VGMOtEvwDpjk/e/9

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-10_f180dc70e31f8cc93ec20d9ed7847bf9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-10_f180dc70e31f8cc93ec20d9ed7847bf9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4348
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    5KB

    MD5

    69467626844faa5a2d733f2d0b886ff3

    SHA1

    505f1a64024d5d101bd8abfcdc417888d9bf6a5a

    SHA256

    138195ceaeea51412a886b68893ceeae98d1d3ee6e174c3c258cdab17ce74094

    SHA512

    597251a85033dad77df95d43e001f2f247082baa993f3fc7cbf4e1ea578799ca9f230526af01a808ea665ac637c535c58cb23ee8ebd8952442fbd48e20d03bef

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    23KB

    MD5

    bb038c7d4e944c73700365e450530cd6

    SHA1

    b2c1d059f26d3247f77b31f498f0a20492c70fee

    SHA256

    a56af42db93aa576eb928642940da86bb4eb6d894950a55218b8b9b37cdcb30a

    SHA512

    0958f9cc9cfc36d885b77308561ae55e36eb184898f68e3f347903daa16c20423b141e273751a63b824cd6e2a88df3b259bf2c632f8cac555a6c9cb1deea15ed

  • C:\Users\Admin\AppData\Local\Temp\misid.exe

    Filesize

    1KB

    MD5

    4254f2cf691d3b0d5fcb0d1ac5c7cb75

    SHA1

    42509286df1f867505757075c65649908510339a

    SHA256

    319b512db79b30fd5b2b1c5fea91b82725340ca4f35b75602f4fe0114dfb659e

    SHA512

    985e3dde8fdd811f266650c6e15589a7a3cea68e6d84ed36bf0d0306653fbde6636e33bd9206409afa77b1315c69b344472bb64fe43722c4dd4153a6666611a6

  • C:\Users\Admin\AppData\Local\Temp\misids.exe

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2596-25-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2596-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/2596-46-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4348-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4348-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4348-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4348-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4348-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB