Analysis

  • max time kernel
    599s
  • max time network
    584s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250210-en
  • resource tags

    arch:x64arch:x86image:win11-20250210-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15-02-2025 09:55

General

  • Target

    plugins/ScreenControl.dll

  • Size

    14KB

  • MD5

    e402280a434814fd9eecb5077b8aac62

  • SHA1

    d120c97cef608e9f234b4d08a62d1cf7d45e5b50

  • SHA256

    d692123e16293f2d41a16e1811ae090324a3f611b694820888008ec6102fae54

  • SHA512

    8f0725702b21afd56a2631ced5d999ac04c5935f3bc6c637a97af4d3d648cc9a51231a87706e64708ef9ae33e51a3edcd1ae3bcafe6d0009a8cccaa2f3a13cc4

  • SSDEEP

    192:ZdOAWZMcRZ+U5FMvZwzUgJKaJqj2MSglwloMWxqR0Zr2v/BmqRPEZDxI6:ZdsKW+sqacj2MSgLxTZr2v/U4ELv

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 7 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Downloads MZ/PE file 1 IoCs
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 8 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies Internet Explorer settings 1 TTPs 21 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • System policy modification 1 TTPs 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\plugins\ScreenControl.dll,#1
    1⤵
      PID:4920
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4xOTUuNDMiIHNoZWxsX3ZlcnNpb249IjEuMy4xOTUuNDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7QzdFQkUxODYtMEMxMi00NDQxLUFBOUUtMDI3MUZEN0NFMDEzfSIgdXNlcmlkPSJ7QkVDMEY0QzctM0E0My00RkEyLTg2OUUtMTA4M0MxMDIzNUY5fSIgaW5zdGFsbHNvdXJjZT0ibGltaXRlZCIgcmVxdWVzdGlkPSJ7OEVCNEVFNEMtQTQyNS00NkJBLUI1NDctRjEwRUI4NEZGM0NDfSIgZGVkdXA9ImNyIiBkb21haW5qb2luZWQ9IjAiPjxodyBsb2dpY2FsX2NwdXM9IjIiIHBoeXNtZW1vcnk9IjQiIGRpc2tfdHlwZT0iMiIgc3NlPSIxIiBzc2UyPSIxIiBzc2UzPSIxIiBzc3NlMz0iMSIgc3NlNDE9IjEiIHNzZTQyPSIxIiBhdng9IjEiLz48b3MgcGxhdGZvcm09IndpbiIgdmVyc2lvbj0iMTAuMC4yMjAwMC40OTMiIHNwPSIiIGFyY2g9Ing2NCIgcHJvZHVjdF90eXBlPSI0OCIgaXNfd2lwPSIwIiBpc19pbl9sb2NrZG93bl9tb2RlPSIwIi8-PG9lbSBwcm9kdWN0X21hbnVmYWN0dXJlcj0iIiBwcm9kdWN0X25hbWU9IiIvPjxleHAgZXRhZz0iJnF1b3Q7RSt4YkF6Nlk2c1UxMjg5YlM2cWw0VlJMYmtqZkJVR1RNSnNqckhyNDRpST0mcXVvdDsiLz48YXBwIGFwcGlkPSJ7OEE2OUQzNDUtRDU2NC00NjNjLUFGRjEtQTY5RDlFNTMwRjk2fSIgdmVyc2lvbj0iMTIzLjAuNjMxMi4xMjMiIG5leHR2ZXJzaW9uPSIiIGxhbmc9ImVuIiBicmFuZD0iR0dMUyIgY2xpZW50PSIiIGluc3RhbGxhZ2U9IjQiIGluc3RhbGxkYXRldGltZT0iMTczOTE4NDMzNiIgb29iZV9pbnN0YWxsX3RpbWU9IjEzMzgzNjU1NjQ3OTQxMDAwMCI-PGV2ZW50IGV2ZW50dHlwZT0iMzEiIGV2ZW50cmVzdWx0PSIxIiBlcnJvcmNvZGU9IjAiIGV4dHJhY29kZTE9IjIxNzk4NjIiIHN5c3RlbV91cHRpbWVfdGlja3M9IjUxNDc0MzEzOTIiLz48L2FwcD48L3JlcXVlc3Q-
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:1060
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\MicrosoftEdge_X64_133.0.3065.59.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\MicrosoftEdge_X64_133.0.3065.59.exe" --msedge --verbose-logging --do-not-launch-msedge --system-level --channel=stable
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2528
      • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe
        "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe" --install-archive="C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\MicrosoftEdge_X64_133.0.3065.59.exe" --msedge --verbose-logging --do-not-launch-msedge --system-level --channel=stable
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Executes dropped EXE
        • Installs/modifies Browser Helper Object
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:1208
        • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe
          "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\SystemTemp\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=133.0.6943.60 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=133.0.3065.59 --initial-client-data=0x23c,0x240,0x244,0x218,0x248,0x7ff7c21c6a68,0x7ff7c21c6a74,0x7ff7c21c6a80
          3⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          PID:2832
        • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe
          "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe" --msedge --channel=stable --system-level --verbose-logging --create-shortcuts=2 --install-level=1
          3⤵
            PID:4552
            • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe
              "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler --database=C:\Windows\SystemTemp\MsEdgeCrashpad --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=133.0.6943.60 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=133.0.3065.59 --initial-client-data=0x23c,0x240,0x244,0x218,0x248,0x7ff7c21c6a68,0x7ff7c21c6a74,0x7ff7c21c6a80
              4⤵
                PID:1284
            • C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.59\Installer\setup.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.59\Installer\setup.exe" --msedge --channel=stable --register-package-identity --verbose-logging --system-level
              3⤵
                PID:768

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{C3DFA32B-37FE-4DE1-88DA-7E431C90D2B6}\EDGEMITMP_490FB.tmp\setup.exe

            Filesize

            6.8MB

            MD5

            1b3e9c59f9c7a134ec630ada1eb76a39

            SHA1

            a7e831d392e99f3d37847dcc561dd2e017065439

            SHA256

            ce78ccfb0c9cdb06ea61116bc57e50690650b6b5cf37c1aebfb30c19458ee4ae

            SHA512

            c0e50410dc92d80ff7bc854907774fc551564e078a8d38ca6421f15cea50282c25efac4f357b52b066c4371f9b8d4900fa8122dd80ab06ecbd851c6e049f7a3e

          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

            Filesize

            3.9MB

            MD5

            ad5f7dc7ca3e67dce70c0a89c04519e0

            SHA1

            a10b03234627ca8f3f8034cd5637cda1b8246d83

            SHA256

            663fe0f4e090583e6aa5204b9a80b7a76f677259066e56a7345aebc6bc3e7d31

            SHA512

            ad5490e9865caa454c47ec2e96364b9c566b553e64801da60c295acd570017747be1aff6f22ca6c20c6eee6f6d05a058af72569fd6e656f66e48010978c7fd51

          • C:\Windows\SystemTemp\msedge_installer.log

            Filesize

            74KB

            MD5

            71e29922bb948242ac0ffe11b73f3fd7

            SHA1

            f5eb4a89f91bfe8f871df0b66bd2fc9adff57e49

            SHA256

            674dde219d96ae13703ba4142195e1430dd696572601d96ae3417f062652fd5e

            SHA512

            bf3b0164239788332e5e6af76bc9bd7d0e91f562f3d005999ad726e9b8e8ca83cdd3a63ab1dd373f84476f2463b4960a76624e202d5b483a5290fd042e200861