Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/02/2024, 09:37

General

  • Target

    2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe

  • Size

    117KB

  • MD5

    2fde95a90fc5007b60a16e2650b12e65

  • SHA1

    3363412851a8e1e978533f9fc4a5f015e04d8643

  • SHA256

    02a0f24d817083029c7e417400b81df678a7fa7e18b7712bab2e8835683b60aa

  • SHA512

    18e4256ee4abda2eada53912606f3a1cb13275cb0e8ac9f9d1ee98813071476946841d27cc574d0bb0cb55ad9f46687d3473d3f0b10c6d2abbe5873a17465c32

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01b:z6a+CdOOtEvwDpjczJ

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\2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-18_2fde95a90fc5007b60a16e2650b12e65_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4192
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3524

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    117KB

    MD5

    9f40d0037f27a37e9992d523f2dde721

    SHA1

    f2e8e835d6a403cad61c7b31d02adad72620598f

    SHA256

    e45216532311da4273193f13c9b3053a4d3843e836027cdddc07285f491dca3c

    SHA512

    5ffac25578eeba45aad1c617e066143e05793de803580c3fab46cdedade1314083f306ead23394a47dc15ae93891f7ed5a8463252623656910c3afe3f6a1a365

  • memory/3524-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3524-21-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3524-19-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/3524-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4192-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4192-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4192-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4192-3-0x0000000002090000-0x0000000002096000-memory.dmp

    Filesize

    24KB

  • memory/4192-20-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB