Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-10-2024 08:24

General

  • Target

    2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe

  • Size

    37KB

  • MD5

    4bb7c21f363e30dadc518dd956fc90b5

  • SHA1

    c75a52696a835fd453867186461e21158622c7c3

  • SHA256

    d7e6940103fdd9a0a7b693b42dd7c15aff312539101c62863a91e4d68ba99117

  • SHA512

    0722f3b9c84fe55d3f8da4f14e3345e65a44265d1ceb7d95bf61d0771bc063d1d0e61010260413753db385b0458d32fe946ac68843c680bda0049ad135b2b0c1

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITo:qDdFJy3QMOtEvwDpjjWMl7To

Score
7/10

Malware Config

Signatures

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-31_4bb7c21f363e30dadc518dd956fc90b5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4872
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1068

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    889381b89a993a33974452fc2a955f76

    SHA1

    058042224fb31a84256c0df9a4733832fdfc23dc

    SHA256

    09e6fce9c2a2190ee214f20d365bddecea30af35ad73576a5fac68bd52575d81

    SHA512

    18d3b3079de8abc1bad4e1a3827256fc11b3793c56bddd98a9db119b7a804d948b72ee847e0d7323c83244857591a435528416496ee6deda014559289b6e9fc9

  • memory/1068-20-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/1068-21-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/1068-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4872-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4872-1-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/4872-2-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/4872-3-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4872-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB