Analysis

  • max time kernel
    94s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-09-2024 04:27

General

  • Target

    2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe

  • Size

    71KB

  • MD5

    b73b9e58ced99a08a44a65fad79452ce

  • SHA1

    c7f2d2011460c6131606636a66f1e7a848e4e308

  • SHA256

    023944c19a0d3e5aef3e051cf61b0f14bfa8fe28212392c4b55fc95325118f15

  • SHA512

    955f6f186c4dccb58699288282984dfa237d270fca9cb63e27acbaa418719fb96e9ef6c5a5e5e0816f3749afab4accdb6a320bb40d03ab99fd136282836e3cea

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs93:C4Q2c94OtEvwDpj4H8zS

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\2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-21_b73b9e58ced99a08a44a65fad79452ce_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1332
    • 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:2820

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    13f590548c049442e87c3208062a479d

    SHA1

    5e1694c3dc3b2957ca326b832bde9db310465f65

    SHA256

    8e4e5fcdd36ed9898884f97a0fcc66e45b0b9e97685e594f772cb1e7df4075ca

    SHA512

    367f4fbe798b40a1c1cc2274fbf8b5391a3fe01ae1411fae9b9fa00afea67fc5191b92ed11e5c20424547d6b089c7a2e9db79012da0fb220c2213ab6820d5213

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1332-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1332-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1332-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/1332-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/1332-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2820-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2820-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2820-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB