Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-06-2024 01:17

General

  • Target

    2024-06-09_cbac7046bed7eedd9d5d090ed03d427e_cryptolocker.exe

  • Size

    44KB

  • MD5

    cbac7046bed7eedd9d5d090ed03d427e

  • SHA1

    bd2a8da385766314b4a727e8e97685f233f27e71

  • SHA256

    0a1fb6c2172295401436c3fb916cef4e20b021ed91c39f6c8b314ddcb6763b33

  • SHA512

    e5c802407a5bb5e41043df94e8204dc2e5722949cabd7964ebf7bb86caebcf13c5ec2e70b13c7ed87f35c3b5227ff5398868fce9b695b355a2b06d35aa4ee0af

  • SSDEEP

    768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66TcuS:vj+jsMQMOtEvwDpj5HW5scuS

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-06-09_cbac7046bed7eedd9d5d090ed03d427e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_cbac7046bed7eedd9d5d090ed03d427e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4984
    • 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:5116

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    bc395bb0edf23054c3404d91e1d9beb7

    SHA1

    be28647574b0bd9cd579d9bb9ae4f6488dbb5f92

    SHA256

    3ed12ca8786b3a9eb459ee59c9b6f6caf0d11cafc2f0260438de8cb2afaa04a2

    SHA512

    ae37c72698a4ef03b75065e8c082a6ee2ca2998ea107af65c736e4bf4efca28ee87210139657188f3ce1a0bc3f2fbe489ae3563b2a93fba4b96e13f6e0997032

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/4984-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4984-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/4984-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/5116-17-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/5116-23-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB