Analysis

  • max time kernel
    125s
  • 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
    20-06-2024 11:22

General

  • Target

    2024-06-20_07d4b42d1e7b0f97ee9d43b4fef5ed74_cryptolocker.exe

  • Size

    63KB

  • MD5

    07d4b42d1e7b0f97ee9d43b4fef5ed74

  • SHA1

    1e2fe8234d812223fa67585ddbd780672ebb150e

  • SHA256

    bed99faddd8ae9329072bf9b49677eb7bbfb6891e059b69e3ca952896ad58b4b

  • SHA512

    847ce9d7dc53165177143c0927720773dfbaab131f7a8847d5c3e6592582faca6b758c248eb74cf78e0b5adbd607d7368cc6462dcfb7a8564185f835ecdbd8c2

  • SSDEEP

    768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zz:0j+soPSMOtEvwDpjwizbR9Xwzz

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\2024-06-20_07d4b42d1e7b0f97ee9d43b4fef5ed74_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-20_07d4b42d1e7b0f97ee9d43b4fef5ed74_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4568
    • 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:1296
  • 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=4488,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=3812 /prefetch:8
    1⤵
      PID:1812

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      63KB

      MD5

      dbb1850def68a64d2305d7d0f7789812

      SHA1

      e3c1688cb634513106d6c87a4c415ee68d32bdd4

      SHA256

      959324bd784bae22a5a50eb677a343eba6bc19877513c9f4b289e3a3b45d5c7d

      SHA512

      9209d37eb8c7eb1887fd5ea6b0eb9b57ce621e18f07c938c6b8f965ae105bb1d3baf2ece84d8b2ee09f993de357cbba8b3862966cc925e8c8e1ed1d51482ecf6

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/1296-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/1296-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/1296-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

      Filesize

      24KB

    • memory/1296-49-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4568-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4568-1-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/4568-2-0x0000000002070000-0x0000000002076000-memory.dmp

      Filesize

      24KB

    • memory/4568-9-0x0000000002050000-0x0000000002056000-memory.dmp

      Filesize

      24KB

    • memory/4568-18-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB