Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01-07-2024 21:36

General

  • Target

    2024-07-01_a269b2e6baa1aa2d07c66b55409fa24f_cryptolocker.exe

  • Size

    37KB

  • MD5

    a269b2e6baa1aa2d07c66b55409fa24f

  • SHA1

    8d6b1dce0263568302b53b826bf7095e408f2467

  • SHA256

    b5278d908a88821d5b6da16e7a2e948f92cfc64a276780b8a33b73ac80b166a6

  • SHA512

    269f8307a5c852881104d69679ec579c456dd6e4ad7fcef88399959dd3316a2ed11e4ff2e5a0ff15ca4ce20a9860fbd372970576c374885c83c3ca36c949233f

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITf:qDdFJy3QMOtEvwDpjjWMl7Tf

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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-07-01_a269b2e6baa1aa2d07c66b55409fa24f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-07-01_a269b2e6baa1aa2d07c66b55409fa24f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2192
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    e461f5610c00f0aac25be1bf7c29f014

    SHA1

    a144355d537581dcde2b037e1a925f3eb2a13271

    SHA256

    0d6874182c1f59902aa19293aa03cbf2a98dbf1b19a0697b61b90a278e2c8778

    SHA512

    f338a84a2cd4385edb6623b666e812a94eceef16cbfbd45eedb087e6d4ccb54cf69e19df08504c12a7c39fe51e937b76b1c944159d8ba377e845aac61f315a36

  • memory/2000-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2000-25-0x0000000000320000-0x0000000000326000-memory.dmp

    Filesize

    24KB

  • memory/2000-18-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2192-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2192-1-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2192-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2192-3-0x00000000004B0000-0x00000000004B6000-memory.dmp

    Filesize

    24KB

  • memory/2192-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB