Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-06-2024 03:28

General

  • Target

    2024-06-14_91f1861db4e8b6e1264d6b7a19c86076_cryptolocker.exe

  • Size

    86KB

  • MD5

    91f1861db4e8b6e1264d6b7a19c86076

  • SHA1

    2529ef0dad22de02d184cfea70eebb2c8ac4ef42

  • SHA256

    10639797fcd909ff7f71891eb1ced5c775b3301a2962947ba18a58d5118abac1

  • SHA512

    c4e2fbe94a067c02dc3902a279afde46bff75e061ea0bad627179d73bbdd628c90882d1111cdf4295b61acc48415a6e7e723af550bd34efe4ef0cb011c99d41a

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrC+5:TCjsIOtEvwDpj5HE/OUHnSM/

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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\2024-06-14_91f1861db4e8b6e1264d6b7a19c86076_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-14_91f1861db4e8b6e1264d6b7a19c86076_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3248
    • 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:4464

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    86KB

    MD5

    7e11b472f5c489d3c5c2fc742c8629c1

    SHA1

    89f635162c90c026a1cb56ca82aa162548b5ba6c

    SHA256

    ee57a83e4a7bd82bd798c3ca5be0bea3fbb5ad57d5c6ce59d9c9fcea42c109dd

    SHA512

    546a628de1b3f5de0ef833d2a1d37134c1587d745d76277c3fd8d718201124146062d6928f9e4a3643cfed87a38c55cb187ab6a9939631ca14a6765f0ce382dd

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3248-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3248-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3248-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3248-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3248-16-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4464-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4464-20-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4464-26-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4464-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB