Analysis

  • max time kernel
    125s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-01-2024 12:22

General

  • Target

    2024-01-27_183fae774815ddb95cd36650bb3a361d_cryptolocker.exe

  • Size

    38KB

  • MD5

    183fae774815ddb95cd36650bb3a361d

  • SHA1

    d858bd664d674338baa486cd033abc474412c944

  • SHA256

    50cc8fdc9892c7a0ea6f57dc6111a915cae6defcddfcc2124d0d3174c92c6d56

  • SHA512

    ecf5d039a7c4c072aa4306f6c8f0127c8a5eba8d04fb88e71f8167293ba64b2864a491d746cf63f9fd3e8b167dd217aa6083a409c18866442d18b18038f03edd

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh638n:6j+1NMOtEvwDpjrRsn

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\2024-01-27_183fae774815ddb95cd36650bb3a361d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_183fae774815ddb95cd36650bb3a361d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2012
    • 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:4348

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    a91508918f88545d5407e67f1aad4c33

    SHA1

    408711bc2f40d5ea292a123d33e2387c63272036

    SHA256

    3059c195c4cd4e128f43ec4b06834844ef09a2ac2ac72605dbcc11a070011253

    SHA512

    39d051cd872eea769bd5c6eeb8ae85badcdda65fc6035c37338fbba18d1c1554b3d28600964e58860c5e08935e06006d1363702a7b89a7bbdc92114c12f2d74d

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2012-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2012-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/2012-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/2012-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/2012-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4348-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4348-22-0x0000000000570000-0x0000000000576000-memory.dmp

    Filesize

    24KB

  • memory/4348-20-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/4348-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB