Analysis

  • max time kernel
    93s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-05-2024 13:23

General

  • Target

    2024-05-10_1c33c8e96fa66c155aa5146c5c259720_cryptolocker.exe

  • Size

    86KB

  • MD5

    1c33c8e96fa66c155aa5146c5c259720

  • SHA1

    71099e052eaf2538e6d382821e41f27447d27cd8

  • SHA256

    e698991268f94b5b3338126464df6c937eb78ad22c62ac9df5a5c44a151a53bc

  • SHA512

    6ab460f9d1bb7e4bb5bb8e3a75eab01a6067c6f5f993c6709a395f27f4b243d173a4b79edd33e4bd9447ba03ee521d3ead2da7cc880deb39bfc9e353c0d948ee

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfWafHNBUw:vCjsIOtEvwDpj5H9YvQd27

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\2024-05-10_1c33c8e96fa66c155aa5146c5c259720_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-10_1c33c8e96fa66c155aa5146c5c259720_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4280
    • 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:3492

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    86KB

    MD5

    ce38c90725d45b11f5d51f9ded71edd8

    SHA1

    c3d3df4de009ac19a55e714d5cd2bf677fcbc2cc

    SHA256

    f4a6b026ebff185c91290e1188df5fdb5f58856bc0c82c07fe9a7369dec37dfa

    SHA512

    cfc2a5e49cfa5d7b9e2b987a0ae076b0e922d896c3a62cce5a1091a07378bd20ca5ee5dc8d5007c46de832a3f1e6ec3e4498fe94debb09f7c25ca5bb1b37d592

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3492-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3492-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4280-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4280-2-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4280-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB