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Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/05/2024, 06:29

General

  • Target

    2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe

  • Size

    46KB

  • MD5

    b5164236ec8f8b417ef49c51020b9ed8

  • SHA1

    4c03d4909d2c036bef134345982552d6b3cd9d08

  • SHA256

    b216af75edfc7ac3ed4690add5b6e80281f1b5a575cc1f7d30b742028243e9d1

  • SHA512

    148927c416f45ea04bde0407b56a011de8c20c2fb61cf7ef5824730f4d756c18d6a41b8d1bad3ef344f63db3be65a3261723373a1c8141795f890602ad6624f8

  • SSDEEP

    768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsP:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3k

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-28_b5164236ec8f8b417ef49c51020b9ed8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2996
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1484

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    46KB

    MD5

    bb1ac9484024f6dad4bb31a5f677a107

    SHA1

    f4603dbed9f008d24b648fbb0c4f3cf10a687159

    SHA256

    c38615ece703d583b3c21c7b6b17a316cd7b4e724e32b7cad54f94ddd5fa826e

    SHA512

    325665f3c2613ac358ae5518153e3cd3686821924f93987d210d2daf586996e935892cf19436b01333fbe038201816d9c26c8683b7135749750f7e63647cac84

  • memory/1484-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/2996-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/2996-1-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

    Filesize

    24KB

  • memory/2996-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB