Analysis

  • max time kernel
    132s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-11-2024 06:22

General

  • Target

    2024-11-02_03772f5fc3a088621b6ab22f254765fa_cryptolocker.exe

  • Size

    95KB

  • MD5

    03772f5fc3a088621b6ab22f254765fa

  • SHA1

    bbeaaacee5faa10691a3df3bb55868e06f741f88

  • SHA256

    106e3c901369202fac3960133614d14242b4b8dc53b7ee2dd89074527663c86d

  • SHA512

    5ac5b6dec6befe7d8c0012c7bfe8996a7f123a8c466d80478365cccbd917a90fc5ea7ddc290ab0c47204532e7e6913a289ca2b0bded0c926813c851134a91db5

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kAd0:zCsanOtEvwDpjBO

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-02_03772f5fc3a088621b6ab22f254765fa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-02_03772f5fc3a088621b6ab22f254765fa_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3264
    • 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:1172

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    95KB

    MD5

    1b916a11f9f6a7bd5dfd23adf12c86fd

    SHA1

    f6f902a8421d29a0e0981fe6e793c20bc46e89a6

    SHA256

    c9f2c0a4d54596fe75022d77a21d963636fb0883e8d36d7dedb604c822c38055

    SHA512

    b4b4570dc1204aa030e8041c8c2bbde1857b2e1ba214791fc0ef169be070b55117c85d3b54c8892d473eaab3c249eac4ef310548d311b9b1aaa430d21eaf1e7d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1172-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1172-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1172-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3264-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3264-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3264-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3264-3-0x0000000000850000-0x0000000000856000-memory.dmp

    Filesize

    24KB

  • memory/3264-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB