Analysis

  • max time kernel
    134s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 06:46

General

  • Target

    2024-06-02_497f6895ac65262132b98fcefa2ce261_cryptolocker.exe

  • Size

    62KB

  • MD5

    497f6895ac65262132b98fcefa2ce261

  • SHA1

    dbdec2b159a94678dbe5f9e29f7e2c5ca3fa424a

  • SHA256

    979d72bdc3f21b75a86cc6e345afebc84ef561f78d62cd801bc9a11cbefd0619

  • SHA512

    d32544df83275ba50371a9f17e6ab1f260555b13ae6b55338b60dc50a6dfceb673f04830edaf600310f350e8c911c4d50b5a854cc0fc5a6edd82701e7836985f

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XG9d:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWQJ

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_497f6895ac65262132b98fcefa2ce261_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_497f6895ac65262132b98fcefa2ce261_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:940
    • 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:3068
  • 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=4328,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=4352 /prefetch:8
    1⤵
      PID:448

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      62KB

      MD5

      32e715520b2d47cef2a16b8f63692620

      SHA1

      e89369322414c32cb399f36232c9f6295571d41c

      SHA256

      6616d8f621412b584934d60c8b25036b97bf0c15fb404661a968bd34a5ccd2c6

      SHA512

      d78347aa1601fa13eea9253a477cea5fff62291eb876485517125f488d903557910fc11ada138599eecf1a83f65d53f63a49857579404834b5f357936c932f45

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/940-0-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/940-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/940-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/940-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/940-17-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/3068-18-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/3068-20-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/3068-48-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB