Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 02:30

General

  • Target

    2024-06-11_6b58f9f66d844179fad64670891d9f65_cryptolocker.exe

  • Size

    65KB

  • MD5

    6b58f9f66d844179fad64670891d9f65

  • SHA1

    5dace259f5bd0c16f75eda96579b14f28dc526e3

  • SHA256

    f8c124c9359304a07cadf151087d125be91c9f44def0596b6bab7a79719f7fbd

  • SHA512

    f99876f29ceeec9c994c7a55f7803cf57664ad5d942178a277c580f6a55bc40b186f8ded18327798f47228018da0ca4fcb15bdc14478108e855eee46386e2865

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsi4:BbdDmjr+OtEvwDpjM8x

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 5 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\2024-06-11_6b58f9f66d844179fad64670891d9f65_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_6b58f9f66d844179fad64670891d9f65_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3700
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2836

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          65KB

          MD5

          9ed914be6690d0b17ff85530527b4275

          SHA1

          e467d7e5e631678337b16cab794b1793747f3bd0

          SHA256

          506d7ce8581058daff2c1d2bf9c503a97b920fd8a2d09c732ef776c448381b54

          SHA512

          f72a7ac577f4be06289c7937ea066ec6bfc1417be792913f104b8c67c222789ee14a38aedff73f2ae2e22a216480da673df382b4949dceb2eded5dc7b95513ee

        • memory/2836-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2836-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/2836-20-0x0000000000860000-0x0000000000866000-memory.dmp

          Filesize

          24KB

        • memory/2836-27-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3700-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3700-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/3700-2-0x0000000002080000-0x0000000002086000-memory.dmp

          Filesize

          24KB

        • memory/3700-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

          Filesize

          24KB

        • memory/3700-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB