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Analysis

  • max time kernel
    141s
  • 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
    29/03/2024, 04:11

General

  • Target

    2024-03-29_ed219b68d56dacb2843e764a325df41e_cryptolocker.exe

  • Size

    49KB

  • MD5

    ed219b68d56dacb2843e764a325df41e

  • SHA1

    4f68a08af30e01cb436af38eb6943acb29f442a9

  • SHA256

    2aaa093378f6a2df9099c9d0820c7d132b1bfbbe7eead78cd765365ba9b12659

  • SHA512

    ec20a1f995b4aa7151a023345e660497cd129391c012e9060d5a192508bb3231964eec2e442104a4ebc23d09491f80473d54f1d3a86ae1d9dc1db3910b975435

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRkHf:6j+1NMOtEvwDpjr8hhXi/

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 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-29_ed219b68d56dacb2843e764a325df41e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-29_ed219b68d56dacb2843e764a325df41e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3620
    • 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:5436
  • 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=3104 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2052

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      50KB

      MD5

      8fa4095db277ff27803b004701ccc31f

      SHA1

      766c1e7ecea8738d9ec973398d882d65b42a167f

      SHA256

      ef220630f273549d04566135a40dd0d7f7880cbf823a13e345ad057a49964d4e

      SHA512

      a7219eb1414d0e3dd9858bfe7a527402e503d6a0975887f3d16e1a991b967ea05d671bb01c24cdc5bdd8bfbad9250b815e1473f0530928942a3c8719b54e86a3

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/3620-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/3620-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

      Filesize

      24KB

    • memory/3620-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

      Filesize

      24KB

    • memory/3620-3-0x00000000020D0000-0x00000000020D6000-memory.dmp

      Filesize

      24KB

    • memory/3620-23-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/5436-17-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/5436-19-0x0000000000510000-0x0000000000516000-memory.dmp

      Filesize

      24KB

    • memory/5436-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/5436-49-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB