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Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/06/2024, 19:28

General

  • Target

    2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe

  • Size

    86KB

  • MD5

    8c242653008be4f6f589dbe7c6db8164

  • SHA1

    db4b3a632a9999ad066af03db1fb2cecdd5d854f

  • SHA256

    40e99487d3533b79acfe046e8a72fe240ff204784fde24311450c3e33419e492

  • SHA512

    13dcd677becd52a7337e353f60880400a0e3f06c693c2081ac19ac3e193953c421921f6ebd79b1e328225532eed87413047b29169515fde90e054912481b60f0

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1Y:zCsanOtEvwDpj+

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1276
    • 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:1836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    86KB

    MD5

    26b7e44140a2bbc3e03bc35a39a2020b

    SHA1

    2d166069d3119dd17a73eb9cbbfb61ec4bec182e

    SHA256

    7c479eeed927afd5ff04b96ff98cd44dc56fe69a80624fb45e9a330bb6bd2e38

    SHA512

    fce5f47dfe06e8d28411e68255696db9e636f00108fabd89aefdb24746f1fb089479305a2a9562dcb11024c96be2336b25e9e74074f234d6ce0d3f8b628f6b27

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1276-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1276-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1276-4-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/1276-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1276-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1836-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1836-20-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/1836-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1836-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB