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Analysis

  • max time kernel
    88s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/03/2024, 09:00

General

  • Target

    2024-03-28_d7159268b9f8d47cbf9562dd7167ec4f_cryptolocker.exe

  • Size

    38KB

  • MD5

    d7159268b9f8d47cbf9562dd7167ec4f

  • SHA1

    852fef295358160752707fcb54d6fc64fe0b9868

  • SHA256

    4bb457bbb4bac81e14ad24c33e753ffe77ae5692a60cfcda0fe11e425d96a0f0

  • SHA512

    49c49137d1127b735682492e92b9c2acb25bd5bd9e995e07eadf63fa334fe0a789a2ed10bc6dfc659d08702d1931dd41001d7d105799823ab497817cbc2d631e

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeneYVKc:ZzFbxmLPWQMOtEvwDpjLeJVD

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-28_d7159268b9f8d47cbf9562dd7167ec4f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-28_d7159268b9f8d47cbf9562dd7167ec4f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4060
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:4688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    5f8ce7ce095a8754aa03c052aca4c247

    SHA1

    7b9bc2e61b599e6a37633d527c999716d8e0a9a4

    SHA256

    211dd50dfda7d0bdd01e4cbbc57ed9f4469c384c897bf09ba29b12fdd726870a

    SHA512

    7d9a5b902d958af4126c72fcf08fe443d659f1cab07b6b09c8a5e752898046fd18185dfca92b8132a7138e5985210356f1e08be92309facaed7048768d6ace67

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4060-0-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4060-1-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4060-2-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4060-3-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/4060-17-0x00000000004E0000-0x00000000004E3000-memory.dmp

    Filesize

    12KB

  • memory/4688-18-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB

  • memory/4688-20-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4688-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4688-49-0x0000000000620000-0x0000000000626000-memory.dmp

    Filesize

    24KB