Analysis

  • max time kernel
    11s
  • max time network
    9s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2024 20:02

General

  • Target

    https://aka.ms/krs?id=-crYd9Lj

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 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 22 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://aka.ms/krs?id=-crYd9Lj
    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:684
    • 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:4 --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=123.0.6312.123 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ffa5866cc40,0x7ffa5866cc4c,0x7ffa5866cc58
      2⤵
        PID:728
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=2044,i,12526319452829556459,12599575041005196076,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=1796 /prefetch:2
        2⤵
          PID:3828
        • 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 --no-appcompat-clear --field-trial-handle=1940,i,12526319452829556459,12599575041005196076,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=2112 /prefetch:3
          2⤵
            PID:2800
          • 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=service --no-appcompat-clear --field-trial-handle=2264,i,12526319452829556459,12599575041005196076,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=2540 /prefetch:8
            2⤵
              PID:2528
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3092,i,12526319452829556459,12599575041005196076,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=3128 /prefetch:1
              2⤵
                PID:3460
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3100,i,12526319452829556459,12599575041005196076,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=3308 /prefetch:1
                2⤵
                  PID:1216
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4324,i,12526319452829556459,12599575041005196076,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=4336 /prefetch:1
                  2⤵
                    PID:3348
                  • 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 --no-appcompat-clear --field-trial-handle=4428,i,12526319452829556459,12599575041005196076,262144 --variations-seed-version=20241006-180150.222000 --mojo-platform-channel-handle=4672 /prefetch:8
                    2⤵
                      PID:5096
                  • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
                    "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
                    1⤵
                      PID:3868
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                      1⤵
                        PID:3736

                      Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

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                      Downloads

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState

                        Filesize

                        649B

                        MD5

                        41cc57249375891213e752e1d974fcde

                        SHA1

                        24c751fcc5a1b1616a518fecf2e755b1386b4527

                        SHA256

                        ab058171e97e35575fbc423a9a6bb132e97601f488ce15f2bc45329a4d7e323e

                        SHA512

                        8dd15814c43898ddac24c022710fdde14a5fe47fa520cab9cee3c77ba34d84cbe3aed0576bce39ed4e8ec47d95ab4f7e0dbc9ae927611528846354f9390bb340

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                        Filesize

                        2B

                        MD5

                        d751713988987e9331980363e24189ce

                        SHA1

                        97d170e1550eee4afc0af065b78cda302a97674c

                        SHA256

                        4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                        SHA512

                        b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                        Filesize

                        9KB

                        MD5

                        c696e893387c29361b615f1a9a285608

                        SHA1

                        ae8dc3ca644948c0168c0d5b902a0c5fc8566d2e

                        SHA256

                        778ea251f83acaecf2e1cba1105caa981d7956d7377420c0ac1b4730dc5f161b

                        SHA512

                        1078662f3d702357d419acfaa1efd6ef416934b31f38ebbca43e6ac5128be4cfe7f7d62bf3ec30bd4091d0219ffadb950fb60a895048854ba384d9b44c98522d

                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                        Filesize

                        116KB

                        MD5

                        1e6817bc70d1dd10b1435c404a9402d6

                        SHA1

                        8602a5f3d22c97888f41f5e79b450040f43a5a09

                        SHA256

                        0d6fc98feb18bec9339f7a4b3474166d5ca450b43f4d84b7c917480aa11b8497

                        SHA512

                        69a41583fd1b75f263dc697759c089a0965ad692478143d9066414bff8f787e24a5df5b7ff4bfb8e94a7aaf8687a766b492b551d636c15b8edc0e26c8b992172