Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    11/08/2024, 01:06

General

  • Target
    Xwrom/FastColoredTextBox.dll
  • Size 333KB
  • Sample240811-bf7y6ssamd
  • SHA256 3701b19ccdac79b880b197756a972027e2ac609ebed36753bd989367ea4ef519
  • MD5 SHA1 SHA512 SSDEEP
Score
4/10

Malware Config

Signatures

  • Drops file in Windows directory 1 IoCs
  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Xwrom\FastColoredTextBox.dll,#1
    1⤵
      PID:1740
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:1532
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --single-argument C:\Users\Admin\Desktop\SaveUnpublish.shtml
        1⤵
        • Drops file in Windows directory
        • 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:1848
        • 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=0xfc,0x100,0x104,0xd8,0x108,0x7ffd7592cc40,0x7ffd7592cc4c,0x7ffd7592cc58
          2⤵
            PID:3064
          • 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=1968,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=1972 /prefetch:2
            2⤵
              PID:3276
            • 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=1716,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=2108 /prefetch:3
              2⤵
                PID:3044
              • 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=1900,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=2244 /prefetch:8
                2⤵
                  PID:968
                • 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=3088,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=3164 /prefetch:1
                  2⤵
                    PID:4424
                  • 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=3096,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=3396 /prefetch:1
                    2⤵
                      PID:1300
                    • 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=4208,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=3536 /prefetch:1
                      2⤵
                        PID:4856
                      • 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=8 --field-trial-handle=4604,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=4568 /prefetch:1
                        2⤵
                          PID:4080
                        • 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=4848,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=4856 /prefetch:8
                          2⤵
                            PID:2916
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=3420,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=4956 /prefetch:8
                            2⤵
                              PID:1372
                            • 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=11 --field-trial-handle=4956,i,5814790178698287648,4797057301784415630,262144 --variations-seed-version=20240801-180145.014000 --mojo-platform-channel-handle=4372 /prefetch:1
                              2⤵
                                PID:1376
                            • 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:4816
                              • C:\Windows\system32\svchost.exe
                                C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                                1⤵
                                  PID:1508

                                Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      BrowsingTopicsState

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState
                                      • Size 649B
                                      • SHA256 7de8baf6d644e3ae567b3721e8c0ce6a667d29d30eebe1bf3118f56bfcaca59b
                                      • MD5 SHA1 SHA512

                                      f_000001

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000001
                                      • Size 210KB
                                      • SHA256 04d7bf7a6586ef00516bdb3f7b96c65e0b9c6b940f4b145121ed00f6116bbb77
                                      • 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 216B
                                      • SHA256 46b7c263067204e5724fa3aab5db3efb2656115e71314671864e0cb93db302f9
                                      • MD5 SHA1 SHA512

                                      2698f16f-db02-4021-8d30-f6784bb6826d.tmp

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\2698f16f-db02-4021-8d30-f6784bb6826d.tmp
                                      • Size 356B
                                      • SHA256 8d5e2ed542bb03b9d621b93df43fa04f4c470c98706b86625fd9a82d86c4dcde
                                      • MD5 SHA1 SHA512

                                      Network Persistent State

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                                      • Size 2KB
                                      • SHA256 c89595f2871fdd02beabdbcb66c8d921a10c9dc5d9c2cb10b39dd3c0e5207fc1
                                      • MD5 SHA1 SHA512

                                      SCT Auditing Pending Reports

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

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                      • Size 9KB
                                      • SHA256 67dce9fd2d19e42371c50ec71db763f97299a4cff3f9186251273fafb3f73dd0
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                      • Size 9KB
                                      • SHA256 4478108865a4829bbff733eaf9649f0c27911ee801f576ff433566e60e51b347
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                      • Size 9KB
                                      • SHA256 9d259397a10029d1219a762f68cf26d0a0dcb3b1c9e2b044245bca5910319d36
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                      • Size 9KB
                                      • SHA256 e6779f39331a4d88e02ba0f754a1c25575adaec458d0ba2d33408d038dca27f3
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                      • Size 9KB
                                      • SHA256 c7ed8a667b93ba77895d8a6ca82a3ba0e31161d244b5a9a5290b384c514d80dc
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                                      • Size 9KB
                                      • SHA256 5deb3e1a59e624d5ee45ce83a9f96e3108b6dfc8636f7b32325a19eccce2f074
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Secure Preferences

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
                                      • Size 15KB
                                      • SHA256 440ad3b078172ca96dff5350e1b1b10886d3c5778c89edd3c7d4da2a01b7ae67
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Local State

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                                      • Size 194KB
                                      • SHA256 27768a8679637ace9a907df7f1a8717a85873cad5a41f010e1105df9d0402ecb
                                      • MD5 SHA1 SHA512 SSDEEP

                                      db27cfcc-f1c7-4e2f-b86e-dfe3d40c9d0a.tmp

                                      • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\db27cfcc-f1c7-4e2f-b86e-dfe3d40c9d0a.tmp
                                      • Size 194KB
                                      • SHA256 081fcd1178efbbf593713070a0d808925f94496d7d3d2467f6669fd510307f98
                                      • MD5 SHA1 SHA512 SSDEEP