Analysis

  • max time kernel
    92s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 03:27

General

  • Target

    2024-06-10_0d7db904e6234a0f8165311d1779b86a_cryptolocker.exe

  • Size

    43KB

  • MD5

    0d7db904e6234a0f8165311d1779b86a

  • SHA1

    dae056093e1f65894430af6723954f1f682b851e

  • SHA256

    bf19b324d08ff5686b13af5668a2a35df5ac782a630954f73c4b9d9b6ea0cdd6

  • SHA512

    4ac23ab93e6b07f4bfe57e523aed8284b6c9dfe3a9a11e16e15057191cd561fff90a232ede47127e38bf499f85b7656f0faab5c1164b555765747003d4abe604

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aDDUac:6j+1NMOtEvwDpjrRhac

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\2024-06-10_0d7db904e6234a0f8165311d1779b86a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_0d7db904e6234a0f8165311d1779b86a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4876
    • 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:1388

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    44KB

    MD5

    61a377b0eab30323dadaa41c1314ff87

    SHA1

    7b91ccc94fbb96e9f57fdf9b8574a25fe91910a6

    SHA256

    21b2ac0d81435478f552d700efb28d8560f9dbf506be8095698dc9498b137f59

    SHA512

    bdd5f8560b95a25a592b212fc5d423bfbce022ea01f40b81509a49261a7a5692b7441ec05ace32f50e3e52d4edf5bd6dc4c42019c1ce10b184b143eb439a322a

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1388-21-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/1388-20-0x0000000002140000-0x0000000002146000-memory.dmp

    Filesize

    24KB

  • memory/1388-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1388-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4876-2-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/4876-9-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/4876-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4876-1-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/4876-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB