Analysis

  • max time kernel
    129s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/05/2024, 23:27

General

  • Target

    2024-05-15_67230b861ee5e4444cda8e5da5780034_cryptolocker.exe

  • Size

    81KB

  • MD5

    67230b861ee5e4444cda8e5da5780034

  • SHA1

    6c12f184665fa0c62bc3d8801582023e1615fb8a

  • SHA256

    abed3f469c1f3c0f9287206a584bc636f63459006532833ba317dd26ff329e42

  • SHA512

    db344dc2235aa95d367f07c282978f4ca29094d4acb38cbf4f406411597e8e6d9f16957a123badf4a725ff0102912bcbb950cdd93c259cdd8e4ccaf28b19c51f

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QsA:zCsanOtEvwDpjv

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 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
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-05-15_67230b861ee5e4444cda8e5da5780034_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-15_67230b861ee5e4444cda8e5da5780034_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4136
    • 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:744

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          81KB

          MD5

          d72d2291721a9a01c24b26653a2f802c

          SHA1

          c20211b1189674efb2af4376a198a67eba334399

          SHA256

          658ce0d393afe05731a244acef2d32dca113f63bb64115dbd817387d3b02ab86

          SHA512

          b7261c593038147dbbe9eb0945a5455b47936c58ae189e46c29bfd71e628dfa55d83488b5dfe0c3e079753722697a08770168d56d260865418d4e578f385025a

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

          Filesize

          315B

          MD5

          a34ac19f4afae63adc5d2f7bc970c07f

          SHA1

          a82190fc530c265aa40a045c21770d967f4767b8

          SHA256

          d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

          SHA512

          42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

        • memory/744-19-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/744-20-0x0000000000760000-0x0000000000766000-memory.dmp

          Filesize

          24KB

        • memory/744-26-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/744-49-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4136-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/4136-1-0x0000000002150000-0x0000000002156000-memory.dmp

          Filesize

          24KB

        • memory/4136-2-0x0000000002150000-0x0000000002156000-memory.dmp

          Filesize

          24KB

        • memory/4136-3-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/4136-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB