Analysis

  • max time kernel
    141s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 04:26

General

  • Target

    2024-05-09_188474edc7d33ac9a029395be8b23b75_cryptolocker.exe

  • Size

    56KB

  • MD5

    188474edc7d33ac9a029395be8b23b75

  • SHA1

    d1136bb078d455ffd8a991fba229ea0a36445184

  • SHA256

    a9eecdfe705b8103c6181e3dc74411743d384ae9ca2e8c0bb488e87a3f88bf19

  • SHA512

    dfe7d6ccbf5db4634a051b611348a8bae10fcfe7ac220cf4fc38998d8c1e7e5f51dda76fec21319a2092726a774e7b29dfe68564d7aec2b1f976b5dce7c104eb

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5QJz7/e6C:6j+1NMOtEvwDpjr8oxExe6C

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-09_188474edc7d33ac9a029395be8b23b75_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_188474edc7d33ac9a029395be8b23b75_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:652
    • 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:4752
  • 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=4080 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3524

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      56KB

      MD5

      7ad504837963b7c52204307695633b56

      SHA1

      47f36f06568be6bdee3624eda9c6dbc76a76bcba

      SHA256

      6bde85d4a2ff84c7564cf08b8f44a8d6f8c7cd383da015243ee89359094a94ca

      SHA512

      175de50ce3146688030a5739dd32b07bbcacab19b25634c8225bed368f6b98fc54ba37e6ed966f3960b7b4057468abcd2a9490c41c8a33c72475a3ef8d475317

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/652-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/652-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/652-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/652-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/652-14-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4752-19-0x0000000000570000-0x0000000000576000-memory.dmp

      Filesize

      24KB

    • memory/4752-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

      Filesize

      24KB

    • memory/4752-48-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB