Resubmissions

10/02/2025, 02:06

250210-cjg3laykgq 10

10/02/2025, 02:04

250210-chg17syrby 10

Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/02/2025, 02:04

General

  • Target

    libcrypto-1_1-x64.dll

  • Size

    3.3MB

  • MD5

    5bbead1078ba0b07e0766eb2426167eb

  • SHA1

    c3443ea0a003268c022225e9b85c6edfb2c09607

  • SHA256

    0cfa2871aa30c9e047a8f5266b31f548b343f15244d26be26bb2a070b5655237

  • SHA512

    55b98d8b57bf06ff9718a73dffb11a3c666c2ba24964b8a9b3c540d4faa22e3aa5dd284795b97375edeb845b7b83dca89bcc97d44c2f66886d5c5b56ff532902

  • SSDEEP

    49152:aVwASOxVIU6ix4GtlqcD+edG2uGAxq+qJhT/XtJl7Ec6YBE6yPBsosKL1CPwDv3G:0y+/rA0lBvKsosQ1CPwDv3uFh+2

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
  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

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

  • Drops file in System32 directory 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.

  • Checks installed software on the system 1 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • Executes dropped EXE 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 24 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 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\libcrypto-1_1-x64.dll,#1
    1⤵
      PID:4552
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDY0MzMiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODc1OTU2NTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTUxOTUxOTE3Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
      1⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:4544
    • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\MicrosoftEdge_X64_132.0.2957.140.exe
      "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\MicrosoftEdge_X64_132.0.2957.140.exe" --msedge --verbose-logging --do-not-launch-msedge --system-level --channel=stable
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4320
      • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe
        "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe" --install-archive="C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\MicrosoftEdge_X64_132.0.2957.140.exe" --msedge --verbose-logging --do-not-launch-msedge --system-level --channel=stable
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Installs/modifies Browser Helper Object
        • Drops file in Program Files directory
        • Executes dropped EXE
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:3088
        • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe
          "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Program Files\MsEdgeCrashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=132.0.6834.160 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=132.0.2957.140 --initial-client-data=0x224,0x228,0x22c,0x200,0x230,0x7ff76582a818,0x7ff76582a824,0x7ff76582a830
          3⤵
          • Executes dropped EXE
          PID:100
        • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe
          "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe" --msedge --channel=stable --system-level --verbose-logging --create-shortcuts=2 --install-level=1
          3⤵
          • Drops file in System32 directory
          • Drops file in Program Files directory
          • Executes dropped EXE
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:3884
          • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe
            "C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Program Files\MsEdgeCrashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=132.0.6834.160 "--annotation=exe=C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=132.0.2957.140 --initial-client-data=0x224,0x228,0x22c,0x200,0x230,0x7ff76582a818,0x7ff76582a824,0x7ff76582a830
            4⤵
            • Drops file in Program Files directory
            • Executes dropped EXE
            PID:4672
        • C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --msedge --channel=stable --register-package-identity --verbose-logging --system-level
          3⤵
            PID:3300
            • C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Program Files\MsEdgeCrashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=132.0.6834.160 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=132.0.2957.140 --initial-client-data=0x224,0x228,0x22c,0x200,0x230,0x7ff66e61a818,0x7ff66e61a824,0x7ff66e61a830
              4⤵
                PID:4024
            • C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --msedge --channel=stable --remove-deprecated-packages --verbose-logging --system-level
              3⤵
                PID:3160
                • C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Program Files\MsEdgeCrashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=132.0.6834.160 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=132.0.2957.140 --initial-client-data=0x224,0x228,0x22c,0x200,0x230,0x7ff66e61a818,0x7ff66e61a824,0x7ff66e61a830
                  4⤵
                    PID:1652
                • C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --msedge --channel=stable --update-game-assist-package --verbose-logging --system-level
                  3⤵
                    PID:2716
                    • C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Program Files\MsEdgeCrashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=132.0.6834.160 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\132.0.2957.140\Installer\setup.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=132.0.2957.140 --initial-client-data=0x224,0x228,0x22c,0x200,0x230,0x7ff66e61a818,0x7ff66e61a824,0x7ff66e61a830
                      4⤵
                        PID:2932

                Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                • C:\Program Files (x86)\Microsoft\EdgeUpdate\Install\{B40ECE54-C0DB-49DA-ACA7-8F95677A427A}\EDGEMITMP_0FDF6.tmp\setup.exe

                  Filesize

                  6.6MB

                  MD5

                  b4c8ad75087b8634d4f04dc6f92da9aa

                  SHA1

                  7efaa2472521c79d58c4ef18a258cc573704fb5d

                  SHA256

                  522a25568bb503cf8b44807661f31f0921dee91d37691bf399868733205690bf

                  SHA512

                  5094505b33a848badcffd6b3b93aad9ad73f391e201dee052376c4f8573ba351f0b8c102131216088ffb38d0ed7b5fe70ba95c3ac2c33a50c993584fe7c435e3

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

                  Filesize

                  3.7MB

                  MD5

                  3646786aea064c0845f5bb1b8e976985

                  SHA1

                  a31ba2d2192898d4c0a01511395bdf87b0e53873

                  SHA256

                  a129a6de7b90500483226192b260eaca1ee116a007771d421aa3eee38af48d6f

                  SHA512

                  145f8abf2ecffd8ecc3745dbd9ab2e360826fa46d6f21dbebece7802b9b5980f4ab19e2dfd180ce0cfb84366f3ac5c87cd1b74a085e1a0dd620b6c097900e0f4

                • C:\Program Files\msedge_installer.log

                  Filesize

                  70KB

                  MD5

                  fce711e49e915c2a8c690f0738ac0f9a

                  SHA1

                  fdb9e9b9c1e60d86ed18444f9a9578ac4ce61fe3

                  SHA256

                  8acd331df3055ccc788074f41a75556833e91fdf3bcca8b6721a5d474f12e0f9

                  SHA512

                  5134e435008c011bfdfac08a59ceba11a688ece80ba6ea7a05b16c8795783d93ff6cd399f417b3178099ff2b6314036727f1a2b6d2aa8e1b0493c14bc1cc2e0a

                • C:\Program Files\msedge_installer.log

                  Filesize

                  97KB

                  MD5

                  62cf8e5a4e3344b338f963d063ddd41d

                  SHA1

                  f69d117e022032f12c5b232156ec45e39ef6768f

                  SHA256

                  6b3d2377ca6b9ef9b37eb4eeec2e578b632b032acd94bcb32e82290e92849b9f

                  SHA512

                  f3206a0e0093141a4e0f4f7f6a3cd077bde20c595432e202e076505a96b0669d420fb7413ba5313ac42f8ecba9910451a9fcccc9c1ac24d44241c3b56a1d12be

                • C:\Program Files\msedge_installer.log

                  Filesize

                  102KB

                  MD5

                  dd95239b70be3f3b9a3e25a632ce3a46

                  SHA1

                  8e5f40774d5501923dd2d82f8d3cb7596f0b8de9

                  SHA256

                  5b2c61c3e671a81e2cd6193a8dd9fbf630a28ade7ceff5646e8873ab121ab466

                  SHA512

                  17f8676fc3ade8a0121603c06bdeae10c388a02d86876e87495eab49e0fa6573814b09fecf56f26f57ea33529bb5f86f4030e848c81fc9c783245b1353e2dfd6