Analysis

  • max time kernel
    137s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-05-2024 02:49

General

  • Target

    2024-05-27_ed320a3041b6855c69c575ae12c72f23_cryptolocker.exe

  • Size

    37KB

  • MD5

    ed320a3041b6855c69c575ae12c72f23

  • SHA1

    8f87760964684fa481417f4586ee8d2e34ad3ae3

  • SHA256

    ca6bed20b0ecb679bcfbb5a42dc1b5eaea9f6d2cd1048226c64836dfc870e7f2

  • SHA512

    a8c8d1f543f69c88d959d7921b1bb52a316ea28a6c288a2e00cca40e695f09cc92e720de9e0f4567af20a7065baa744a9aa4d1f1385140cc038c6098f946986d

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4N:fT+hsMQMOtEvwDpjoIHN

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-05-27_ed320a3041b6855c69c575ae12c72f23_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_ed320a3041b6855c69c575ae12c72f23_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4768
    • 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:4812
  • 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 --mojo-platform-channel-handle=4092 --field-trial-handle=2276,i,11674642242468042059,14711253743544118298,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3288

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      38KB

      MD5

      64d8af716793c1cccfdf4dc77513a43f

      SHA1

      dbdcb3fe5433c200ea92e2c9fde06a69ac84b13e

      SHA256

      697e20dd9514da820bdbb2bbc418df5f91919276776252a6cae35dd3a745a294

      SHA512

      e231821d4a39754f8aeb2191cbe3a86e738f225f30baafc539716f0597b1052aa0b8942b874ebe7f93d81689d9dc72dd6872692fc2c8dc25dcb0d4b7ed28b428

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/4768-0-0x0000000000520000-0x0000000000526000-memory.dmp

      Filesize

      24KB

    • memory/4768-1-0x0000000000520000-0x0000000000526000-memory.dmp

      Filesize

      24KB

    • memory/4768-2-0x0000000000640000-0x0000000000646000-memory.dmp

      Filesize

      24KB

    • memory/4812-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4812-18-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB