Analysis

  • max time kernel
    137s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-10-2024 08:13

General

  • Target

    2024-10-31_f1ee274134ecb9b34450ec872bfb7551_cryptolocker.exe

  • Size

    95KB

  • MD5

    f1ee274134ecb9b34450ec872bfb7551

  • SHA1

    1dc7dda124a35812970f0bd0cc76fcd1f4269512

  • SHA256

    4eda7e257096cf8b010fa6beccf8538e7777fc8d10128189eaad319cc773f8c6

  • SHA512

    e43231b9b45c13ba07cb41bd6ea14a10934ae0764bb51d0e2ac57ae933eee58d64339ec805e08c154e213442db929ddc45a39ff416703e95ffa23196de45f03e

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjuv5S:zCsanOtEvwDpjA

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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-31_f1ee274134ecb9b34450ec872bfb7551_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-31_f1ee274134ecb9b34450ec872bfb7551_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2968
    • 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:1460

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    95KB

    MD5

    62cbc190b8af5acf4d8c6fb4c22658db

    SHA1

    e2345096df22d183f5358c9e7a1baa81d748477d

    SHA256

    bb32f03846818d5ab221d7344a3fec3c4d8898d9ccc8ff0f9152f16819a7c1b9

    SHA512

    8f457bc09a68f8fcdf1a7bccb98d33f4eec44235210b594604d8e94d358d07d3a649af43e4d1067b819835dc04e6fec68160a1ccea01621e3b7390283b24b8b8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1460-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1460-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1460-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2968-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2968-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2968-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/2968-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/2968-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB