Analysis

  • max time kernel
    144s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2024, 01:26

General

  • Target

    2024-04-30_715a8b39a64c6450743d4e65db681520_cryptolocker.exe

  • Size

    36KB

  • MD5

    715a8b39a64c6450743d4e65db681520

  • SHA1

    eddfc685a41c627772b1213ee1a48ab4b86659e7

  • SHA256

    ae5c0f2ec6dcbb82716d4d91a243d142442c0c4f8cb6458556d75069acffb8dd

  • SHA512

    b6532871bc063bee392ccc5b27ab54f7fa7f35f59eb253df8ec7d2b18a625cf0251a6b1affe1582b3dfa332e64913ef8095155db5a676f37ba7b54de684c73d7

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4+:fT+hsMQMOtEvwDpjoIH+

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\2024-04-30_715a8b39a64c6450743d4e65db681520_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_715a8b39a64c6450743d4e65db681520_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:628
    • 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:1272
  • 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=3756 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1724

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      37KB

      MD5

      8eb2f12756816695cfc869a12cb472a1

      SHA1

      a0ef52aa8b29a695830b9e0c2ddcb2e533a326a0

      SHA256

      aa2edf66cb9f673d2c2695a9b25405d2be0734e46079da1e47e2cf4a9f732267

      SHA512

      5e62e970222d2e445d7327ba07a465addd0ab2f8dca41189c3f65485e2ec21b43462e68f362be3d0daf4d55e0cc77120f65b5a6f5af3e1f6f573678c8995abe1

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/628-0-0x0000000002290000-0x0000000002296000-memory.dmp

      Filesize

      24KB

    • memory/628-1-0x0000000002290000-0x0000000002296000-memory.dmp

      Filesize

      24KB

    • memory/628-2-0x00000000021A0000-0x00000000021A6000-memory.dmp

      Filesize

      24KB

    • memory/1272-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/1272-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB