Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-06-2024 02:54

General

  • Target

    2024-06-13_75c5171aa865369eb8c6d860074f4a0f_cryptolocker.exe

  • Size

    2.0MB

  • MD5

    75c5171aa865369eb8c6d860074f4a0f

  • SHA1

    eb815b9aa256f02037735b5efa52fd09780809a7

  • SHA256

    d7fdaad9f23ee00a78943348d53f3d56928ac5c03558ae09c085655ffa19f949

  • SHA512

    0ef2ec3b5387f62f27f5ca503543a8640c06bec9f19e322fa42dc9c75261fe678ee021b0471022c445865db2295510e74a50e96d6aa7f4d45859dd5a5c2d4ed2

  • SSDEEP

    49152:Z9FYSZ72CT32laA+iHAg9lVF1lVF1lVFkUEiiCX/:JjGzP

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\2024-06-13_75c5171aa865369eb8c6d860074f4a0f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_75c5171aa865369eb8c6d860074f4a0f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1296
    • 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:1680

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2.0MB

    MD5

    fc373e51596b2f66a3000a955e4c24eb

    SHA1

    5ea673ab3a04b201c085dde107c7caef8601875d

    SHA256

    e559821586b3690013ba46e049828afa62e3172646621481e2f576130427123b

    SHA512

    6f2887e1e36b27524f72b378778ae10ddd869e208d271acd4c441265f972c70a4f1aaf5a6a6f23ffe60bf3e59d128c9112abc4d91ab16a3975f073bcbb49fde0

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1296-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1296-8-0x0000000000500000-0x000000000063E000-memory.dmp

    Filesize

    1.2MB

  • memory/1296-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1296-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1296-26-0x0000000000500000-0x000000000063E000-memory.dmp

    Filesize

    1.2MB

  • memory/1680-25-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1680-24-0x0000000000500000-0x000000000063E000-memory.dmp

    Filesize

    1.2MB

  • memory/1680-18-0x00000000006F0000-0x00000000006F6000-memory.dmp

    Filesize

    24KB

  • memory/1680-47-0x0000000000500000-0x000000000063E000-memory.dmp

    Filesize

    1.2MB