Analysis

  • max time kernel
    147s
  • 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
    06/03/2024, 01:33

General

  • Target

    2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe

  • Size

    61KB

  • MD5

    2dcd3ea6c4e00777181b7824e09d6a59

  • SHA1

    37306abcab5540fc37f68af6db1a6b429cdb1e79

  • SHA256

    fe8d62008ecbdcf55a19ea2c83d266090bec39f460a8ab6b876e0da133a87796

  • SHA512

    7f8ba5b3f8f2d91f8c7601f14ae6c85d751f0a69324b07b635514b03902a23b7c16ac023dbb148aa8cf312af3ed57c74bda7137a8063afa4a3a3e4a00c190cb9

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsxa:BbdDmjr+OtEvwDpjM8A

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-06_2dcd3ea6c4e00777181b7824e09d6a59_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3100
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3624
  • 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=3724 --field-trial-handle=2972,i,4036376905309803364,5412922217215781933,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1364

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      62KB

      MD5

      f9747e0457a8742465deaacbad2d53bf

      SHA1

      9fa787e30f781bdc72aff9e2fadb8a88f0e74527

      SHA256

      afed1417bc0a696e179aa68887829e851f307f78cdf995a613afb2cade4e583b

      SHA512

      3c9d6577052a38262c37721c864db7c2d60cca45d81e9207043a4ea82c74e9eb32ac68718e94eb9a91049c6d98d07f0da65097307bdd4aef94e5edee52420bfb

    • memory/3100-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3100-1-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/3100-2-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB

    • memory/3100-3-0x0000000000750000-0x0000000000756000-memory.dmp

      Filesize

      24KB

    • memory/3100-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/3624-19-0x0000000000650000-0x0000000000656000-memory.dmp

      Filesize

      24KB

    • memory/3624-21-0x0000000000630000-0x0000000000636000-memory.dmp

      Filesize

      24KB

    • memory/3624-26-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB