Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02-05-2024 19:51

General

  • Target

    2024-05-02_638ae54d94461b28936e5e4c514c2a64_cryptolocker.exe

  • Size

    38KB

  • MD5

    638ae54d94461b28936e5e4c514c2a64

  • SHA1

    90535605164dd8d22f3a19399238346072329df7

  • SHA256

    1c3b9bac9d428081b45f7afb0f24e67e575851ee29b7153c20cc7112b970647e

  • SHA512

    368bcb77d8215e26bff60929d65578a5a032ddfc1e6ed13faad75db473c8e50c784917a41897958626cec0f91abbc5748398ec7d1cff0a47328b494de850c5c9

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9iSh:qDdFJy3QMOtEvwDpjjWMl7TK

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-02_638ae54d94461b28936e5e4c514c2a64_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-02_638ae54d94461b28936e5e4c514c2a64_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3048

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    935a0196f3b6dade77abd14fdf0e3878

    SHA1

    136b23f81e48aa27445f87561b7d087361878cd3

    SHA256

    a90710fcb6b0ffc4d4f0128fb563890012119eda592e0bdd3e9ab058f633d1db

    SHA512

    b52368610bcb839e9c6d522cac449222e158e61c12e4982f79f910f3a3db99db2a1f6911951dd462177394454710ae03fc4738477c9f155b644b494792a6f787

  • memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2228-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2228-2-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2228-3-0x0000000000480000-0x0000000000486000-memory.dmp

    Filesize

    24KB

  • memory/2228-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3048-18-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/3048-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB