Analysis

  • max time kernel
    169s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/01/2024, 05:44

General

  • Target

    2024-01-01_6a36407aa564c3c6b3f7782df01bce25_cryptolocker.exe

  • Size

    35KB

  • MD5

    6a36407aa564c3c6b3f7782df01bce25

  • SHA1

    da5fab58b79afea44cc3da892bba0c5983e42ea2

  • SHA256

    c5bdb2c6dfe822bdd0011c532ba0619894aa66bb13ec2c7b1dd261bc81324376

  • SHA512

    9a1771f616efe9a67793565a025d6ba36c8c354dcda0f7e060255ea436e1193ac9aa79177fbf52c7ef32b5dc36d6f078d7b7c1024e44b47467f328115d92b547

  • SSDEEP

    384:+cX+ni9VCr5nQI021q4VQBqURYpetOOtEvwDpjqIGRxzOP51FqQLicn3f3yr1:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvA

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-01_6a36407aa564c3c6b3f7782df01bce25_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-01_6a36407aa564c3c6b3f7782df01bce25_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3888
    • 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:3228

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    36KB

    MD5

    e99e61ff9bc4dcd9f69ae2691b3b0bf9

    SHA1

    b6619b63196d9d53b5698c4178a3bacedefa7c91

    SHA256

    327511e64cc6b8d9aa033bfa63ba65f2c9dab6603aa320a6c5ffae67018af1a8

    SHA512

    159c7ab0d7c242b434cfc1be8a0899c72de48af869c440152bb93bddc63c6f5810346c9219dd027ede7e860162833cb65cd7b645606187930e42e54bb507c9eb

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3228-20-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/3228-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3228-27-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3888-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3888-1-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3888-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/3888-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/3888-4-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/3888-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB