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Analysis

  • max time kernel
    148s
  • 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
    31/05/2024, 19:47

General

  • Target

    2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe

  • Size

    39KB

  • MD5

    3ee209a51a725da5dbf1c23016bdfc49

  • SHA1

    77aa5697e421e9153fbcdbd1cf98fbe6256084cb

  • SHA256

    a21fddcea968b0e1a8eff9ebf1c226c574d2133e930a447baed554e165e4a073

  • SHA512

    f235dd7e2daea520aea0fa0872d2c7e03d5946e9071c34f8e70f48833c3a77df1fea2b54c3c7050b8808273c9214e08c3cc273f75da74ce860e0de9be5ce5ed0

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCw0U:X6QFElP6n+gJQMOtEvwDpjBmzDU5U

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\2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_3ee209a51a725da5dbf1c23016bdfc49_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4604
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3712

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    60ab673280ba5fef724cca341661e38a

    SHA1

    a8ade8a7c993dc09f84a89045715379d127cecd1

    SHA256

    c206096c504ba2de00929a2624181fc816a8e9c4efb1c82a2a9e7be8d436d80c

    SHA512

    83df60bdc2bbc58f4a5df5b873d379ef1f20539d9a96d4adf3c194fe5fdde843a60eb3f25316e3c89e5c09e52fe95447ba6102f3bca71479c593851f5311b02c

  • memory/3712-23-0x0000000000560000-0x0000000000566000-memory.dmp

    Filesize

    24KB

  • memory/3712-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4604-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4604-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/4604-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB