Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 21:52

General

  • Target

    4cfea33c0f63f46219a23cdd61d552caf6c4501bc37ef982f2b09cfaf216f495.exe

  • Size

    96KB

  • MD5

    52e97d348b0c54b4bb22103de121e404

  • SHA1

    40da81df10fc4a9266a2b2bdc8d834aa641715bc

  • SHA256

    4cfea33c0f63f46219a23cdd61d552caf6c4501bc37ef982f2b09cfaf216f495

  • SHA512

    5a38261047b9d975a9fd19ccf598786d063f7e49c9cb24a5ab00b56f18e748296c2070f6fb0a7f50c11804c7811312de1a1427b04298f9e93bac2f0157077d06

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+8:AnBdOOtEvwDpj6z3

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\4cfea33c0f63f46219a23cdd61d552caf6c4501bc37ef982f2b09cfaf216f495.exe
    "C:\Users\Admin\AppData\Local\Temp\4cfea33c0f63f46219a23cdd61d552caf6c4501bc37ef982f2b09cfaf216f495.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4696
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4952

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          96KB

          MD5

          6646be29c80150b95f3e499c4e1140c0

          SHA1

          1ee32e634c6cdb2d4857d2445316e7f100a41460

          SHA256

          1207d16369d4625b64b46f3e864e68364d9fbb83e57bd3caebff608d86da6aeb

          SHA512

          70e6758f0d66c580c74ced8ad4676a855126e683a4620cd14dcca401a9866afcc4874449342330a17cb64d94bfa9bdae4e7a7454466cf78b6008d71236e0596d

        • memory/4696-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4696-1-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/4696-2-0x0000000000760000-0x0000000000766000-memory.dmp

          Filesize

          24KB

        • memory/4696-9-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/4696-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4952-19-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4952-27-0x00000000005A0000-0x00000000005A6000-memory.dmp

          Filesize

          24KB

        • memory/4952-21-0x00000000005D0000-0x00000000005D6000-memory.dmp

          Filesize

          24KB

        • memory/4952-28-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB