Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-06-2024 04:20

General

  • Target

    2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe

  • Size

    40KB

  • MD5

    edb57535181a18d2d1ee13429964c9f1

  • SHA1

    d8df49732c10cfbc304e573ac1e71d6b8ae77bb9

  • SHA256

    97742eeab2c0edfe401c71ee10acfc4edc4eba231aa959a61b67e647666b43de

  • SHA512

    39dd7b8d1a21c916fe903654c2cc91289c9d421a9894b5d1780143a7de4cbffc0617840ec8e299944ada203efe02990055301d9332b19dc5b23cacb9d7808501

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9hk:qDdFJy3QMOtEvwDpjjWMl7Td

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_edb57535181a18d2d1ee13429964c9f1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1476
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2664

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    03c12bb7d9b6051c473c87a96aecb5bd

    SHA1

    7aba9aa0e3e077c8f001f718f0245ee343cde3a4

    SHA256

    255c72a07e942a9dadc06376713180c320286c5931ad6f277249441b75406626

    SHA512

    edb82edc8c912abac54a1b8cf2fc2396bc45473a49aa3715f9397c4eba4cac6f663677e47ef3e25bfa650e93e4e0b36028e129e1dc6b84b692f253c35f038700

  • memory/1476-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1476-1-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1476-2-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/1476-9-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1476-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2664-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2664-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2664-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2664-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB