Analysis

  • max time kernel
    141s
  • max time network
    163s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-05-2024 00:25

General

  • Target

    2024-05-23_1690ece352791863707066ea1322b0ef_cryptolocker.exe

  • Size

    78KB

  • MD5

    1690ece352791863707066ea1322b0ef

  • SHA1

    53c4cefa2246096d781919c074d4749210983d6c

  • SHA256

    7c2c466cef69d0e146dc5e952b8f4fc5fe9ee96708ccc7c20106c10574844677

  • SHA512

    56afcebc5bd0c89aa6f3dd21343e54d5bd7fe101ddec55dc0b69557737f3e9a2f3a55311a14f007d5b173fed42f340cf275ab892e3a5ef40cb3e546598fd1a0a

  • SSDEEP

    1536:vj+jsMQMOtEvwDpj5HwYYTjipvF2hBfIuf6:vCjsIOtEvwDpj5H9YvQd22

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-05-23_1690ece352791863707066ea1322b0ef_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-23_1690ece352791863707066ea1322b0ef_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1496
    • 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:100
  • 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=4264 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1620

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      78KB

      MD5

      14031465de66fbe4d707d89a5e9a861e

      SHA1

      fa9bfc488d7a4d78239e8e47deec2244fc8d5b92

      SHA256

      5f66cf0a5344132d2a1559f6ba7f5063bd948dacd48395354ec1485ba8101017

      SHA512

      9f922db62d762df645156b720cbf9f1c1aa5a18fd9adf89a87ca454eb4058d6a2a102fed642c8a883de576466fba1736aef865a31d7fa806c06f80e7408d85ef

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/100-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/100-17-0x0000000000590000-0x0000000000596000-memory.dmp

      Filesize

      24KB

    • memory/1496-0-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/1496-1-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/1496-2-0x0000000000710000-0x0000000000716000-memory.dmp

      Filesize

      24KB