Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/06/2024, 17:12

General

  • Target

    2024-06-12_8bcfade2d2d3208d3984e37bc9c9be41_cryptolocker.exe

  • Size

    75KB

  • MD5

    8bcfade2d2d3208d3984e37bc9c9be41

  • SHA1

    d9baf4173bcba92c1c37be1ce459c30940efa6fc

  • SHA256

    5e635268296ac6a3b03e3b1d5997a6bd0fb30ccd6234c3cd9a0b19dc6fee0b99

  • SHA512

    6d23f9d99d52c1d90f4a7349f03f1259aa75c0892c7e90b0288f8a3c88b388298f5508f921e092f5729ee531a4ddbcbe10ea75eaefae0d1d6f2c26d969e120cc

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal81Gcm:1nK6a+qdOOtEvwDpjc

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
  • 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 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-12_8bcfade2d2d3208d3984e37bc9c9be41_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_8bcfade2d2d3208d3984e37bc9c9be41_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1076
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1464

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    76KB

    MD5

    2b051555cfb66eb220d983685155453e

    SHA1

    9f1c9157314b9b5ead0fd7d9997f1d90f18741d0

    SHA256

    342bcea57e9e918ad1b4a236e8b4b36020484b1fe47465c8651f33fb91eab150

    SHA512

    3a3f1175a62e6ed45f9f9ca85cfce4a377d98cd997022ce324a0e9eb5356137ecfeef45bcd53de0c1d2321e54f4295782c0b5df035b746669c38fd6ba51f89d6

  • memory/1076-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1076-1-0x0000000000840000-0x0000000000846000-memory.dmp

    Filesize

    24KB

  • memory/1076-2-0x0000000000840000-0x0000000000846000-memory.dmp

    Filesize

    24KB

  • memory/1076-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/1076-16-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1464-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1464-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1464-26-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB