Analysis

  • max time kernel
    142s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 06:53

General

  • Target

    2024-02-14_7dbfd27e221a32c5d419faa77a457a93_cryptolocker.exe

  • Size

    62KB

  • MD5

    7dbfd27e221a32c5d419faa77a457a93

  • SHA1

    6237bc2d03c01a44cec18764e4c167313e77e3c0

  • SHA256

    0c6d0eefb5bd24dea18ebca1726063eb171a0914c086089fcada8deb179eedb2

  • SHA512

    07e77354d99d2bc44a93c9c4afb44d6672340cd33cdd4740901ad296dd8147f109988132346529e014a37dbbd5ed1f230d9adac249d97516a40ff22b33b28070

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdG:TCjsIOtEvwDpj5HE/OUHnSMYb

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-14_7dbfd27e221a32c5d419faa77a457a93_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_7dbfd27e221a32c5d419faa77a457a93_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2148
    • 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:3712

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    62KB

    MD5

    9586c82be0de1ac26339c02bf7ecd057

    SHA1

    4fdcc128318f9ec6c7cc5a1fecef8c662005b761

    SHA256

    07c4cb121d10a37e52a9bd6733aafd87eb7bb74c7e0587f74b22556e07a92b14

    SHA512

    a14e52c764285cfb5a3c33d0b28c8a51bc9461c10f2be64c80212899d710cbe12ac33958d39a7ea094550108ee4bb90b18a8735c0d1b16c8c04b560cedcf3c2e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2148-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2148-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2148-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/2148-3-0x0000000002230000-0x0000000002236000-memory.dmp

    Filesize

    24KB

  • memory/2148-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/3712-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3712-21-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/3712-48-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB