Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2024, 00:22

General

  • Target

    2024-01-27_09fc6be01fa2d562d96a90d82a835067_cryptolocker.exe

  • Size

    60KB

  • MD5

    09fc6be01fa2d562d96a90d82a835067

  • SHA1

    4b78b0af8f77a77c9522fee6ee64eb958bcefdaa

  • SHA256

    e5f08e0d4eb6210317b17042a6ef6fbc5f6641a03baee0b318b61c3ddb4faae3

  • SHA512

    f9a636ad3e7f829dfa07e34d065cf152a0c747b5847e849fd1c88ca1df5faee16b9eeb3549eaa87a732c6a66f9a81a9e7d5115f989601c9bd04980fe1c624012

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIq:TCjsIOtEvwDpj5HE/OUHnSMg

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-01-27_09fc6be01fa2d562d96a90d82a835067_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-27_09fc6be01fa2d562d96a90d82a835067_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5108
    • 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:2292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    60KB

    MD5

    bbc4cdd60d5533accaacd662f57489d6

    SHA1

    2b79e95ef707760b6c74cb271dd59c324413d956

    SHA256

    42536910a661a1c2a9c36417df73595460e070535a4d468b0c19e848f2039ced

    SHA512

    c1c954847a50d1f3cd1befbf92a2c8649dcfd50cad31443704805f35cc061d91ce753eb463a701f13c260956ee621331d165efb1e6c74e4295a8b57d3bb802da

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2292-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2292-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2292-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/5108-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/5108-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/5108-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

    Filesize

    24KB

  • memory/5108-3-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB

  • memory/5108-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB