Resubmissions

02/07/2026, 15:55

260702-tc1d2ahs6s8

02/07/2026, 15:54

260702-tb657ahs4x8

Analysis

  • user interaction
    yes
  • max time kernel
    30s
  • max time network
    28s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/07/2026, 15:54

General

  • Target
    http://74.114.119.202/d/msdownload/update/software/defu/2026/07/am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe?cacheHostOrigin=au.download.windowsupdate.com
  • Sample260702-tb657ahs4x
Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of FindShellTrayWindow 44 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --start-maximized --disable-default-apps --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://74.114.119.202/d/msdownload/update/software/defu/2026/07/am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe?cacheHostOrigin=au.download.windowsupdate.com
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=139.0.7258.155 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 --annotation=prod=Edge --annotation=ver=139.0.3405.125 --initial-client-data=0x238,0x23c,0x240,0x234,0x248,0x7ff88f74c188,0x7ff88f74c194,0x7ff88f74c1a0
      2⤵
        PID:368
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=2004,i,6719377675673152466,6040613585173399003,524288 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=2320 /prefetch:3
        2⤵
        • Downloads MZ/PE file
        • System Time Discovery
        PID:4684
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --no-pre-read-main-dll --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADgAAAIAAAAAAAAAAAAAGAAAQAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --always-read-main-dll --metrics-shmem-handle=1652,i,185909938304749682,16207130574919560680,262144 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=2288 /prefetch:2
        2⤵
          PID:4708
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=2600,i,18249354465489590841,16913542639791317121,524288 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=2616 /prefetch:8
          2⤵
            PID:5072
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --pdf-upsell-enabled --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --always-read-main-dll --metrics-shmem-handle=3460,i,728144814779666980,14909061626243468741,2097152 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=3500 /prefetch:1
            2⤵
              PID:2440
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --pdf-upsell-enabled --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --always-read-main-dll --metrics-shmem-handle=3476,i,12348119824620927624,8642694849611186838,2097152 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=3504 /prefetch:1
              2⤵
                PID:4856
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --pdf-upsell-enabled --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --always-read-main-dll --metrics-shmem-handle=4204,i,6004668813422582665,7620217320708425028,2097152 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=4264 /prefetch:1
                2⤵
                  PID:396
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --extension-process --renderer-sub-type=extension --pdf-upsell-enabled --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --always-read-main-dll --metrics-shmem-handle=4248,i,995534312162492688,17286079598550432060,2097152 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=4268 /prefetch:2
                  2⤵
                    PID:1852
                  • 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 --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5180,i,787275471176892178,15610922775224425686,524288 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=5196 /prefetch:8
                    2⤵
                      PID:968
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=entity_extraction_service.mojom.Extractor --lang=en-US --service-sandbox-type=entity_extraction --onnx-enabled-for-ee --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5204,i,8806723904312575454,1773149037159514750,524288 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=5220 /prefetch:8
                      2⤵
                        PID:4844
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --pdf-upsell-enabled --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --always-read-main-dll --metrics-shmem-handle=5760,i,3490159668862378370,17695042205405406225,2097152 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=5776 /prefetch:1
                        2⤵
                          PID:4216
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --lang=en-US --service-sandbox-type=collections --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=5688,i,9687728050772045008,9249749304046034022,524288 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=5736 /prefetch:8
                          2⤵
                            PID:3836
                          • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\identity_helper.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=6560,i,11260030865747764851,16265256853081492040,524288 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=3828 /prefetch:8
                            2⤵
                              PID:4600
                            • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\identity_helper.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=6560,i,11260030865747764851,16265256853081492040,524288 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=3828 /prefetch:8
                              2⤵
                                PID:2756
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --always-read-main-dll --metrics-shmem-handle=6660,i,17737784577847742524,8330635101200599469,524288 --field-trial-handle=2292,i,17855966974336298677,13405719524384124144,262144 --variations-seed-version --mojo-platform-channel-handle=6656 /prefetch:8
                                2⤵
                                  PID:3280
                                • C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe
                                  "C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe"
                                  2⤵
                                  • Executes dropped EXE
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:2608
                              • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
                                1⤵
                                  PID:2588
                                • C:\Windows\System32\rundll32.exe
                                  C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                  1⤵
                                    PID:5124
                                  • C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe
                                    "C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe"
                                    1⤵
                                    • Executes dropped EXE
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:5160
                                  • C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe
                                    "C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe"
                                    1⤵
                                    • Executes dropped EXE
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:5340
                                  • C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe
                                    "C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe"
                                    1⤵
                                    • Executes dropped EXE
                                    • Suspicious behavior: EnumeratesProcesses
                                    PID:5364

                                  Network

                                        MITRE ATT&CK Enterprise v16

                                        Replay Monitor

                                        Loading Replay Monitor...

                                        Downloads

                                        blocklist

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Ad Blocking\blocklist
                                        • Size 105KB
                                        • SHA256 bf637ca0b28ebd6e948876848ccfe71d201158d460d4ad944f124f9d17ee5472
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        settings.dat

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                        • Size 280B
                                        • SHA256 6de34b260036ecaa4ce5839bc4a7ff7495e50b7b94349b12d9f840ca0e76da3b
                                        • MD5 SHA1 SHA512 TLSH

                                        settings.dat

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                        • Size 280B
                                        • SHA256 f5dece638cd89af82b06bd2fcb3d1738eef64d2275be237184ea8bff7af3fdfa
                                        • MD5 SHA1 SHA512 TLSH

                                        BookmarkMergedSurfaceOrdering

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\BookmarkMergedSurfaceOrdering
                                        • Size 6B
                                        • SHA256 4489f9e3e454748b3521eb214e0a5694d562cff3d9ff511cb456953c8f534c00
                                        • MD5 SHA1 SHA512

                                        the-real-index

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index
                                        • Size 3KB
                                        • SHA256 3aebb299f87127855ad7d032cb56b22c5764c91fa10b0d11e17f82d18150402f
                                        • MD5 SHA1 SHA512 TLSH

                                        the-real-index~RFe589b31.TMP

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index~RFe589b31.TMP
                                        • Size 3KB
                                        • SHA256 9b72c723766d9239bcba206b3ce05c1a8aa311bbe9814f5150d5dd1286051158
                                        • MD5 SHA1 SHA512 TLSH

                                        SiteList-Enterprise.json

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\DualEngine\SiteList-Enterprise.json
                                        • Size 2B
                                        • SHA256 44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a
                                        • MD5 SHA1 SHA512

                                        Edge Profile.ico

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Edge Profile.ico
                                        • Size 70KB
                                        • SHA256 31a226211c491e1b0832d4cd3cf34d97165e24a7ce4ec655259cd188f3a2bd88
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        HubApps

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\HubApps
                                        • Size 106KB
                                        • SHA256 eb2fd7422436fff93f6be09df3294b26cdb7afd18e6aa94dcdc0f208db78b2ed
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Network Persistent State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Network Persistent State
                                        • Size 111B
                                        • SHA256 5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026
                                        • MD5 SHA1 SHA512 TLSH

                                        SCT Auditing Pending Reports

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
                                        • Size 2B
                                        • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                                        • MD5 SHA1 SHA512

                                        Preferences

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                        • Size 12KB
                                        • SHA256 2bb93783ea599cb3f3578c7622f0631fa92173405d3a8de338ec1a654b962f1f
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Secure Preferences

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Secure Preferences
                                        • Size 30KB
                                        • SHA256 6c6eff2c8e27dfdfdbb7e41e08082d700e21a1eb09e16970224d1b25d678f32c
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        sync_diagnostic.log

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Sync Data\Logs\sync_diagnostic.log
                                        • Size 5KB
                                        • SHA256 d2a79c61589cca820525f7e46fe8e825a585c37f6b9beb95ace9865ca7b746c7
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 19KB
                                        • SHA256 a892f093a4d6c46d4a6af696a726cc40eb444e37672e3dd952be3f5effb7ec7b
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 8KB
                                        • SHA256 bc8dde70888163b9600c88f891f676a95dadb3a4fbd477d8f65a9bc29a832522
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 19KB
                                        • SHA256 899af7ddcf674be5bd594beb93ad8f28f9d097fb1aa5df68bd7f236e34d6ee2a
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 8KB
                                        • SHA256 d9a338f03515623d93879402ce7770aca6ddb0ba99ea7483ff696622662a9197
                                        • MD5 SHA1 SHA512 SSDEEP TLSH

                                        5a2a7058cf8d1e56c20e6b19a7c48eb2386d141b.tbres

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\TokenBroker\Cache\5a2a7058cf8d1e56c20e6b19a7c48eb2386d141b.tbres
                                        • Size 2KB
                                        • SHA256 529f7faccba269da805dc84fce2a8cd1d2ce0961765cbfa28da3e3487f2f43af
                                        • MD5 SHA1 SHA512 TLSH

                                        am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe.crdownload

                                        • Path C:\Users\Admin\Downloads\am_delta_e5f454114805bea64a80f0431669b7ab40dd9a1f.exe.crdownload
                                        • Size 4.9MB
                                        • SHA256 3d6e04d32dcb9045b4da0e8b23e6e3fde6b9f4d3d2d2c66ba8e7ca69c5181811
                                        • MD5 SHA1 SHA512 SSDEEP TLSH