Analysis

  • max time kernel
    144s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-01-2024 05:59

General

  • Target

    2024-01-11_61eb56815f4ca2304a9c4947f7e0e76f_cryptolocker.exe

  • Size

    38KB

  • MD5

    61eb56815f4ca2304a9c4947f7e0e76f

  • SHA1

    aed46b57290f48f109b1392c3b37a141dc6669e6

  • SHA256

    46a1eb2abd64c038d1d854fb48ab86ebe70e6eab40f4f64dc580c193fb6913e7

  • SHA512

    40a5ff3e8ddf4c8ff684dae16ddb3a65623a851ee714b1dce7e9f319afec38cba29ac2db9c87fff6d90d606358ca4587c58864f53fc6f481be8e676ff5081c9a

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqhMWKay9Z:6j+1NMOtEvwDpjroKT

Score
7/10

Malware Config

Signatures

  • 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\2024-01-11_61eb56815f4ca2304a9c4947f7e0e76f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-11_61eb56815f4ca2304a9c4947f7e0e76f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4732
    • 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:1424

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    1b269720357043145a0eba1857830fdd

    SHA1

    fdf14f3eb309a13b9634db84e62854689b7e46ee

    SHA256

    2b61d8bb93aad7c5d74aec691779aaa464bef2eb5d7a36f7eeeed30fbcc1b08c

    SHA512

    f5afcc4f463dcfbb49e1d62b2be9024fdcdbe59c3a2af849ea39d6a58ae81eaa4ecb4d148f351ca7d85b6854aaec81c68b5d77aac9c07d1db000d9a4127959eb

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1424-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1424-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1424-37-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4732-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4732-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/4732-2-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/4732-3-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4732-4-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB