Analysis

  • max time kernel
    89s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-01-2024 03:57

General

  • Target

    2024-01-24_df5f21663fae222dc8200dc7162ef067_cryptolocker.exe

  • Size

    57KB

  • MD5

    df5f21663fae222dc8200dc7162ef067

  • SHA1

    6f38c58da9cd5b75ea456d9e30af37c7111fee23

  • SHA256

    c2a36375b9c43377b79ab7bac246f6c1fb36f5e307ab5b8dfdb89d2ad9192f59

  • SHA512

    c683cf4e48978165cc7dc4a4f197cf126844d538143556dc08226b528ecb73ec0be5ac68ee8c30d574e3144e37a76d93142693291d2729e25546b45c4febe4ed

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZgBh8i6g7GoFwEK:xj+VGMOtEvwDpjubEgywEK

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-24_df5f21663fae222dc8200dc7162ef067_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-24_df5f21663fae222dc8200dc7162ef067_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1724
    • 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:2556

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    57KB

    MD5

    f710cf29b7e569aad1f8c58c358961ac

    SHA1

    8cf03cbfd8bf822aadbb8159938988c6fe199338

    SHA256

    80480adcd1a05615be0eb273a1253811ac10d884e90b96906d8cd8f6738b82ee

    SHA512

    4395eeaa9d988085e306b61f6d31f62c8183d4feb7493a89925a58144f187f56eb19924c8b62ed1761aa7819528fb00c6857495e85c0f063a09d78c314160b0b

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1724-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1724-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/1724-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/1724-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/1724-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2556-20-0x0000000002040000-0x0000000002046000-memory.dmp

    Filesize

    24KB

  • memory/2556-26-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/2556-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2556-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB