Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/03/2024, 00:41

General

  • Target

    2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe

  • Size

    43KB

  • MD5

    88ee7dbbbe2f4985b2d2c685c703dd63

  • SHA1

    ee60c9016837b2b0b5b5acb9fd9b709336e759b3

  • SHA256

    65ffa23bbd141a743074f61582619305e1e0ecd8428290a374f81ead89ff0625

  • SHA512

    9dec74df87c37521683328cf60fbaefc052d43acf98907fb6cb4858e638a2bf361dd07f1ec31a3215329b8dba91dbd87b65398bef24d0d42eac2f337e6ad74b8

  • SSDEEP

    768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+syQNA1:bgGYcA/53GADw8Cl/n1

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-28_88ee7dbbbe2f4985b2d2c685c703dd63_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:1404
  • 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=3940 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2528

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      44KB

      MD5

      79b80f96510d69113f2a63dfb72aa911

      SHA1

      50262f7a2c0cba73c5bef42a13f263541ab53af5

      SHA256

      713e5c9a61aaae6ce6b84b94a02abb37bace5ca19a7363ef608bae55c4131d4e

      SHA512

      f233c8631af04fb5449fbdd4723df4789337fb8f4e93a631825acc2fb9e4b2876c6b0161e398b593c45efc86d97049da50262145dc04e564acfd6b206717c336

    • memory/1404-17-0x0000000003010000-0x0000000003016000-memory.dmp

      Filesize

      24KB

    • memory/1404-18-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

      Filesize

      24KB

    • memory/2272-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

      Filesize

      24KB

    • memory/2272-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

      Filesize

      24KB

    • memory/2272-2-0x0000000002340000-0x0000000002346000-memory.dmp

      Filesize

      24KB