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Analysis

  • max time kernel
    126s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/06/2024, 15:52

General

  • Target

    2024-06-19_ee73f47281164d35ef9d557011d42afc_cryptolocker.exe

  • Size

    41KB

  • MD5

    ee73f47281164d35ef9d557011d42afc

  • SHA1

    d9ec411c9b6cd7a03aa35daeedf423c6f061410f

  • SHA256

    69d195dacdbe21916378defdf0ec9c3b98ab5794a9a3b13f8adcb7e1c709b9fc

  • SHA512

    02e4d217ed213f0173b98c02b3eb9671ac3f6b91ec0f15519befe4e4980fcc2ec394829131b2a6777c20ffe61c2edf42a1a1356ef27f2648dcedfcb4cb0d517f

  • SSDEEP

    768:UEEmoQDj/xnMp+yptndwe/PWQtOOtEvwDpjLeJAsKuDb7x7:ZzFbxmLPWQMOtEvwDpjLeJAsKcb79

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-06-19_ee73f47281164d35ef9d557011d42afc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-19_ee73f47281164d35ef9d557011d42afc_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4540
    • 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:4836
  • 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 --field-trial-handle=4076,i,1809100026287847100,9768898026582633513,262144 --variations-seed-version --mojo-platform-channel-handle=1276 /prefetch:8
    1⤵
      PID:4832

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      42KB

      MD5

      d7ba3df0a8d0ec0deefff1835676d306

      SHA1

      c2957b5b73ddd9e77cca76e0e718da868e277886

      SHA256

      662badf9b810b1671dc03ced89865ef924d23910a4227ca5d8ee4fd60dd9fec0

      SHA512

      9d48e970ec3c22d3d00eefa56192d846449b1ffd321d98e4e4936876aeec43b608878cd956dcfd4b12250dba7536c8908da9267abbc15cbd0053bb7450e976c4

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

      Filesize

      315B

      MD5

      a34ac19f4afae63adc5d2f7bc970c07f

      SHA1

      a82190fc530c265aa40a045c21770d967f4767b8

      SHA256

      d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

      SHA512

      42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

    • memory/4540-0-0x0000000000490000-0x0000000000493000-memory.dmp

      Filesize

      12KB

    • memory/4540-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4540-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/4540-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4540-17-0x0000000000490000-0x0000000000493000-memory.dmp

      Filesize

      12KB

    • memory/4836-18-0x00000000004E0000-0x00000000004E3000-memory.dmp

      Filesize

      12KB

    • memory/4836-20-0x0000000000650000-0x0000000000656000-memory.dmp

      Filesize

      24KB

    • memory/4836-26-0x0000000000620000-0x0000000000626000-memory.dmp

      Filesize

      24KB