Analysis

  • max time kernel
    93s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-04-2024 06:43

General

  • Target

    2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe

  • Size

    42KB

  • MD5

    d328fea08aad7ad1f1f060ba1edef1d9

  • SHA1

    42d0b41785f436c75b01c478729b647214805fd8

  • SHA256

    c6da462903bb49df77d3d52f08c513ea6b3b3c71c24f41c7376174c235436f82

  • SHA512

    aeb1ce2bc8e07efd5d08f045a348b736e9aa9c065a64f163d46ad396c7118a4206ea2aa2873718a906c3991814385651ed89dbe13482aa0401dafb4483c1a0bc

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRp5f6:m5nkFNMOtEvwDpjG8hhXj5f6

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-06_d328fea08aad7ad1f1f060ba1edef1d9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:468
    • 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:1880

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    a844b9f71bee1cec4c57cb31ad13c999

    SHA1

    dfd86e4e0396bb4f9740f7d88b3f6f7abdb1434e

    SHA256

    45469b3dd250cb89a1bf2732c1242f8b5b6d704d1172c8dc18cb91d4680e38f1

    SHA512

    90649bbc822f6f7415cb731b9a9d0d7d1197625f37cf21c517c39085b1574fe3817169027eb2747c51545cdeac923dcb418b9720e6edb65797351279d162ae4f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/468-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/468-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/468-2-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/468-3-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/468-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1880-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1880-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1880-50-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB