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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 18:56

General

  • Target

    202405216bfebcfbc6db59fc9f3e40b2d5716156cryptolocker.exe

  • Size

    73KB

  • MD5

    6bfebcfbc6db59fc9f3e40b2d5716156

  • SHA1

    f6267ae49ede661f383ef2b9eb5301715f2df754

  • SHA256

    05fb3f761ae0530c5ca4677f467954e21fa62a743409d0559f8f36978faf5584

  • SHA512

    0557a3fb6364ed0aa7cfa04a51113f883146ce3344a6903141a7250211e8815da9e7dff1704b474743de468a648599aa7c6e70c46dd58126f8b3ba673c650e9e

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9Vy:C4Q2c94OtEvwDpj4H8z9

Score
7/10
upx

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
  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\202405216bfebcfbc6db59fc9f3e40b2d5716156cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\202405216bfebcfbc6db59fc9f3e40b2d5716156cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2044
    • 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:1404

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    73KB

    MD5

    896e882877a1cf76c09da82f0dac5fe6

    SHA1

    cf9646c2b7f3ece09863ebe76b8e82694ec19d7d

    SHA256

    631fa6012a5f4d45c18fc793bc465632c5bbd83c3d05e1553a856c554d6888c4

    SHA512

    3c05066e3def902ded240d0546fec7b6819e61fff9d52551c233ab92d9baec2137d0f687df56771d74eba7cbaf670eb709efb7b41ef0b0cd2a115b42c48ac3f5

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1404-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1404-21-0x0000000000760000-0x0000000000766000-memory.dmp

    Filesize

    24KB

  • memory/1404-27-0x0000000000740000-0x0000000000746000-memory.dmp

    Filesize

    24KB

  • memory/1404-51-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2044-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2044-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2044-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/2044-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2044-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB