Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 18:31

General

  • Target

    2024-05-27_5adecc2116a063d3ef4f55e3c640ded6_cryptolocker.exe

  • Size

    49KB

  • MD5

    5adecc2116a063d3ef4f55e3c640ded6

  • SHA1

    129171a9d9527276042e79b161c31411e263403e

  • SHA256

    696338272fdbcbab1d0a1c89c8a66f16725738bc49fd14fe34d8f8598c3c33ea

  • SHA512

    93ad77574e4b7123764d26cf06f27f37d08ddef791de430f673087d1ddabbffb01cc8e96b9a311aa7861d2b171f58af0c398f056a6297bc6257b89b27a8a1079

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsm0L:xj+VGMOtEvwDpjy+viHs7L

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-27_5adecc2116a063d3ef4f55e3c640ded6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_5adecc2116a063d3ef4f55e3c640ded6_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:972
    • 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:1200

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    0e35a29607a9b848c82bb470fbe66fab

    SHA1

    cdc0438e430137dd2b5410ac57a14de669794e2f

    SHA256

    1b0a13bb00337efe5c3273d2e59fe8580910746aa8856bdf5c7a93f206489f53

    SHA512

    22e276be727c0bd256cf21631531b376d401ca1022afb855038fe046dc6eb21e674592e6dcd38b42e4473171e514fb18f9a2471c30abd372b21864bddd34cd0f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/972-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/972-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/972-2-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/972-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/972-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1200-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1200-20-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/1200-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/1200-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB