Analysis

  • max time kernel
    148s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/08/2024, 09:51

General

  • Target

    2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe

  • Size

    39KB

  • MD5

    554730e8b97fdee57ebc24edf8c63473

  • SHA1

    7f63af31a52ec634d4368a74e213d5d60db10dd7

  • SHA256

    e5857e7c38b52e5c549067e332f3749f6a998148e3f602f43603f17c26d184a7

  • SHA512

    f6b1971f8ccf6d61485ee646a60ec3a3a5326c2df732d46a141cec79662e8755edf3d684effc03b8e7b0daa17e6b60032fd662cc41c75c71a488161eda73efa0

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITH:qDdFJy3QMOtEvwDpjjWMl7TH

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\2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-08-25_554730e8b97fdee57ebc24edf8c63473_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3704
    • 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:4268

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    5d97e3f287c7a88668d70364d76e77b8

    SHA1

    f64d75a298c81f60cb475e94f504134ef41c8089

    SHA256

    ba84235b5b45cce5cf1452fde1719180002c9a77ebeb2b644f0334d4f855e3e6

    SHA512

    a9640c45075d98e70ac56a0eb65f893d2184b4583bf8c6e1889c7b793145cab6e826515482030e2229aa6f09c6c455a1867903a22be5d2d8ce15589274a2e84e

  • memory/3704-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3704-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/3704-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/3704-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

    Filesize

    24KB

  • memory/3704-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4268-20-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/4268-26-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4268-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB