Analysis

  • max time kernel
    135s
  • max time network
    133s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/06/2024, 07:56

General

  • Target

    2024-06-01_d79e0d3f867d316c6c3e8d5eec5d9764_cryptolocker.exe

  • Size

    52KB

  • MD5

    d79e0d3f867d316c6c3e8d5eec5d9764

  • SHA1

    765d9949e42fed0f4272895b2c1e81e563d7ef41

  • SHA256

    14f45a4df3d2cdbdc37216098bf9f7eacd59017ab7effd7f2cfbc298691b49fc

  • SHA512

    0501182163973eec7e3e154504b6a2c41fb038e69ca3b28e2073f679ef824d106b646c8be4e8b69e84671f261c1d0f15c7a26b5f951347cf884026dd43927071

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRY+iyyPO:6j+1NMOtEvwDpjr8hhXy+iyym

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 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
  • 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\2024-06-01_d79e0d3f867d316c6c3e8d5eec5d9764_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_d79e0d3f867d316c6c3e8d5eec5d9764_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4564
    • 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:2028
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=2860,i,2607710392823067546,4648797561512801463,262144 --variations-seed-version --mojo-platform-channel-handle=4460 /prefetch:8
    1⤵
      PID:4336

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      52KB

      MD5

      fe4652baf66c146b79f0e9c96054d0ba

      SHA1

      37b8a381d4b1f0af8792858b863083324223571a

      SHA256

      24c685ba5662d7965fcf1705650f1ad67fb6004a7af85ed8305dca044e14aae1

      SHA512

      b9fe1e77e9182d54970a6b6d171cb40b6d9eaa97887dbd8985c890c3ea7af39be165525320bae9f5e726e0504ee40d28b18ea96b4f628a0c481f001aa20ed49a

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/2028-17-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/2028-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/2028-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/2028-49-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4564-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4564-1-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/4564-2-0x0000000000690000-0x0000000000696000-memory.dmp

      Filesize

      24KB

    • memory/4564-9-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/4564-18-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB