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Analysis

  • max time kernel
    142s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/06/2024, 18:47

General

  • Target

    2024-06-08_13bc7e1640fc094e3ca500febbe33a6d_cryptolocker.exe

  • Size

    62KB

  • MD5

    13bc7e1640fc094e3ca500febbe33a6d

  • SHA1

    a7f66307e205d9e166c70879c10930c9bf578f54

  • SHA256

    a6ce124b07e25218491d77578e3f6542308bfebb7d976c466b78c9338476cb62

  • SHA512

    4371ef5f371f922b970f8278d9a18c019b9a178e40329ac84c9c8d8dc48ddcf25c21fa95f86a141b1fb90e556fbc61946ec49d46e23f986b3cc0d3c38a897f9e

  • SSDEEP

    1536:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWTAO:3WHsIOtEvwDpjoHYf

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-08_13bc7e1640fc094e3ca500febbe33a6d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-08_13bc7e1640fc094e3ca500febbe33a6d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2648
    • 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:772
  • 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=4064 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4680

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      62KB

      MD5

      a8a5599eb988b3f389f11f0e6f07a7ae

      SHA1

      e906998e7afbee015ca955920f0d40ac3dcbb306

      SHA256

      ee925bed3cbe836765d6b1c379531e15ece966fc1f40b190fa43223e54d4e812

      SHA512

      67b7bc21d1139b58ebc773bc87c198989044b92c6bb8603b014600126cc03ea6612312ec8795d7ad4f99a43a3c80050aae71580b8fc9bb2fb5b09c25068fe2a0

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/772-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/772-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/772-48-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/2648-0-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/2648-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

      Filesize

      24KB

    • memory/2648-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

      Filesize

      24KB

    • memory/2648-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

      Filesize

      24KB

    • memory/2648-25-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB