Analysis

  • max time kernel
    146s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 22:14

General

  • Target

    2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe

  • Size

    41KB

  • MD5

    eac309ce599ba3c9b813d3c972d12a16

  • SHA1

    baf65739a1f2688e12dad91dabebdde409355525

  • SHA256

    fe6bbcaec64241f1ca753d992e3d432818b7415b3b65868b8bc8181be9237f43

  • SHA512

    0c2cd9028eb0a94aae2fbdedd46c5957f9a04032188b3e0c01cca763f7143f7e042fb37e13d23ae0e0b7c85f91a4781b6c3d73a86408986bd34a6d0e570bfebd

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY9hT:qDdFJy3QMOtEvwDpjjWMl7TG

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_eac309ce599ba3c9b813d3c972d12a16_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4552
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:680
  • 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=1032 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:5076

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            41KB

            MD5

            e3961939866b0f0afb9ef6eee44f4577

            SHA1

            d36fa0cc909a13e946c7eaca8f98ec64ae4428ae

            SHA256

            4268f77ee4484f20f075d951e66ff87e1a47f87989565b6f98c40cc3623f802b

            SHA512

            457546c62bd2f0cff6d11032dd9674da3565536fa04f83f38800057707be0d40cc89561b47b32890f332e8424a24c422121c07a010da5244349e437fe0f3b316

          • memory/680-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/680-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

            Filesize

            24KB

          • memory/680-27-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/4552-0-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB

          • memory/4552-1-0x0000000000660000-0x0000000000666000-memory.dmp

            Filesize

            24KB

          • memory/4552-2-0x0000000000660000-0x0000000000666000-memory.dmp

            Filesize

            24KB

          • memory/4552-3-0x0000000000760000-0x0000000000766000-memory.dmp

            Filesize

            24KB

          • memory/4552-25-0x0000000000500000-0x0000000000510000-memory.dmp

            Filesize

            64KB