Analysis

  • max time kernel
    150s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/11/2024, 05:29

General

  • Target

    2024-11-20_f286d72aa1683b93b9b63db8322d49e7_cryptolocker.exe

  • Size

    72KB

  • MD5

    f286d72aa1683b93b9b63db8322d49e7

  • SHA1

    668cf0d911f0429514ea4adc655dd06e456c8be0

  • SHA256

    1889e227c5debf955ec8354676c57f704dc630b43bd2f2019f463ca2d8abf64f

  • SHA512

    fe0b0790d21fd09298d58250eab8423bfcf263b9f2cd8025625124a03ddd9b32196c976bfc6ff1d4277dda1b653ea1bb7eeaba33c5336e51165570f05f4bc3a2

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs97:C4Q2c94OtEvwDpj4H8zm

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
  • UPX packed file 4 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-20_f286d72aa1683b93b9b63db8322d49e7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-20_f286d72aa1683b93b9b63db8322d49e7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1136
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:1560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    0197d4f04bbac9e0e9b00f334e83d3d9

    SHA1

    cdbe62f7bbfb69035d231b0cba03f6f44b0700be

    SHA256

    8063f26531716dd7528ef847a6f02b344201346d1f9a8afc82929f02671bb184

    SHA512

    0b0b49480c51ecdbb50f79e11f8708b5b4ce9213a17bf97eeca7bc6a4792fe6e9fcb1e8b6e435fca2173cabcfeb0d472e16dfc96ba326ca288e3bab6032c9a86

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1136-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1136-1-0x0000000002150000-0x0000000002156000-memory.dmp

    Filesize

    24KB

  • memory/1136-2-0x0000000002150000-0x0000000002156000-memory.dmp

    Filesize

    24KB

  • memory/1136-3-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/1136-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1560-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1560-25-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/1560-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB