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Analysis

  • max time kernel
    152s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/03/2024, 05:27

General

  • Target

    2024-03-08_0a4ca29f0a063a8c2123d1aba82d0bc8_cryptolocker.exe

  • Size

    38KB

  • MD5

    0a4ca29f0a063a8c2123d1aba82d0bc8

  • SHA1

    b3ab1cdb9e0830ae9434ea953ad4ab5fe37f7459

  • SHA256

    c85c785613e99f4f6cc61b21ca646ba2bf54a4d2444e7d88ad97507f4c09a008

  • SHA512

    1b03def9e23aec71dc8341d39ad5598f42215162e1d83e9f1c7777f2fae304d67defc98bbdece7a37099e33abecdbc5b60a3b4e78eeb0ce1c5ffb738ed1bde86

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCpvsb:X6QFElP6n+gJQMOtEvwDpjBmzDUpvG

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-03-08_0a4ca29f0a063a8c2123d1aba82d0bc8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-08_0a4ca29f0a063a8c2123d1aba82d0bc8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2684
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3524
  • 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=4112 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4000

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      38KB

      MD5

      bc49c5b5a6def3857306a2c4129acf96

      SHA1

      8f8399e00bf280b98fd7b4627f7c8f781b4ff1a5

      SHA256

      04664e86692f8fa081016444563b2f199963322f64a5fb12d1171951560c1972

      SHA512

      7ea882553a1fe43e3e380ae0374aa6ba22059e755a3f15776459a55691fd9090e820532336dd3dc1ae65825883ebed7d23ff5b7d204c32a2840d22e1c7d2f0af

    • memory/2684-0-0x0000000000810000-0x0000000000816000-memory.dmp

      Filesize

      24KB

    • memory/2684-1-0x0000000000810000-0x0000000000816000-memory.dmp

      Filesize

      24KB

    • memory/2684-2-0x0000000000830000-0x0000000000836000-memory.dmp

      Filesize

      24KB

    • memory/3524-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/3524-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB