Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    04/08/2024, 05:06

General

  • Target
    https://krs.microsoft.com/redirect?id=lxDNVZKK
  • Sample240804-frrtjs1gph

Malware Config

Signatures

  • Detected potential entity reuse from brand microsoft.
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://krs.microsoft.com/redirect?id=lxDNVZKK
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2368
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xcc,0xd0,0xd4,0xa8,0xd8,0x7ffddccd9758,0x7ffddccd9768,0x7ffddccd9778
      2⤵
        PID:2272
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1524 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:2
        2⤵
          PID:4388
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1800 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:8
          2⤵
            PID:4824
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2040 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:8
            2⤵
              PID:5044
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2844 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:1
              2⤵
                PID:4104
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2852 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:1
                2⤵
                  PID:1716
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4712 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:8
                  2⤵
                    PID:5072
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4764 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:8
                    2⤵
                      PID:1548
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --mojo-platform-channel-handle=4920 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:1
                      2⤵
                        PID:4468
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.15063.0 --gpu-preferences=UAAAAAAAAADoAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAACQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=3176 --field-trial-handle=1760,i,16665533701413589290,12362666058341133228,131072 /prefetch:2
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:4016
                    • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                      "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                      1⤵
                        PID:2460

                      Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            5debb20d-d2d8-4e46-8e9b-1d6eb561cc76.tmp

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\5debb20d-d2d8-4e46-8e9b-1d6eb561cc76.tmp
                            • Size 6KB
                            • SHA256 b9018bd30a1233143cc1bd96c47c1e9152cd81763d649d0443387e2c5a9bab3a
                            • MD5 SHA1 SHA512 SSDEEP

                            f_000015

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000015
                            • Size 209KB
                            • SHA256 27d9c4613df7a3c04da0b79c13217aa69992b441acb7e44bf2a7578ca87d97d6
                            • MD5 SHA1 SHA512 SSDEEP

                            the-real-index

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Code Cache\js\index-dir\the-real-index
                            • Size 480B
                            • SHA256 79f7b58390ba87eda5b1e5f435fa9ae129aac5aaa8a206862b2e8b8c25505b89
                            • MD5 SHA1 SHA512

                            Network Persistent State

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                            • Size 2KB
                            • SHA256 b9384056cb164833242bfff42818104626458869b4cd96955f70ada32d6bd088
                            • MD5 SHA1 SHA512

                            Network Persistent State

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                            • Size 2KB
                            • SHA256 8f9010ff1ef676ea7a331c25e02b91f801fc11aed4d4713d3812b4390a8d6963
                            • MD5 SHA1 SHA512

                            TransportSecurity

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                            • Size 1KB
                            • SHA256 891d71741502734b560da91b626848317a18fb3c357f622fdcfac5514a512f86
                            • MD5 SHA1 SHA512

                            TransportSecurity

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                            • Size 1KB
                            • SHA256 af2db8eee2138c035ac5daf2a070765c8a10ef471d18f53c5da9cffe8c724ce6
                            • MD5 SHA1 SHA512

                            TransportSecurity

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                            • Size 1KB
                            • SHA256 3aad1e7d9f78aada2f106d97aee698d4fd547223ed37864a56d5fc1e03632ea3
                            • MD5 SHA1 SHA512

                            Local State

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                            • Size 136KB
                            • SHA256 83e3a6d0d8218e6521efa20e931908116a035eaf4f366522491b542bb99adf99
                            • MD5 SHA1 SHA512 SSDEEP

                            persisted_first_party_sets.json

                            • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\persisted_first_party_sets.json
                            • Size 2B
                            • SHA256 44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a
                            • MD5 SHA1 SHA512