Analysis

  • max time kernel
    122s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/01/2025, 11:27

General

  • Target

    https://guaicui.com.br/wp-content/plugins/captcha/js/file.zip

Score
10/10

Malware Config

Extracted

Family

lumma

C2

https://toppyneedus.biz/api

Signatures

  • Lumma Stealer, LummaC

    Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

  • Lumma family
  • Suspicious use of SetThreadContext 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 45 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://guaicui.com.br/wp-content/plugins/captcha/js/file.zip
    1⤵
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:968
    • 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,0x100,0xd4,0x104,0x7ffb0680cc40,0x7ffb0680cc4c,0x7ffb0680cc58
      2⤵
        PID:3396
      • 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=2000,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=2004 /prefetch:2
        2⤵
          PID:4860
        • 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=1944,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=2128 /prefetch:3
          2⤵
            PID:4436
          • 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=2268,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=2460 /prefetch:8
            2⤵
              PID:4568
            • 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=3112,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=3156 /prefetch:1
              2⤵
                PID:4940
              • 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=3120,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=3348 /prefetch:1
                2⤵
                  PID:4104
                • 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=4768,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=4788 /prefetch:8
                  2⤵
                    PID:3348
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4680,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=5036 /prefetch:8
                    2⤵
                      PID:4488
                    • 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 --no-appcompat-clear --field-trial-handle=208,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=5264 /prefetch:8
                      2⤵
                        PID:2648
                      • 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 --no-appcompat-clear --field-trial-handle=5248,i,1861426992196212439,15989075768049810290,262144 --variations-seed-version=20250128-180236.310000 --mojo-platform-channel-handle=3828 /prefetch:8
                        2⤵
                          PID:4048
                      • 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:3092
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                          1⤵
                            PID:3408
                          • C:\Windows\System32\rundll32.exe
                            C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                            1⤵
                              PID:5104
                            • C:\Users\Admin\Downloads\file\Update.exe
                              "C:\Users\Admin\Downloads\file\Update.exe"
                              1⤵
                              • Suspicious use of SetThreadContext
                              • Suspicious use of AdjustPrivilegeToken
                              PID:5064
                              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
                                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
                                2⤵
                                • System Location Discovery: System Language Discovery
                                PID:4980
                            • C:\Users\Admin\Downloads\file\Update.exe
                              "C:\Users\Admin\Downloads\file\Update.exe"
                              1⤵
                              • Suspicious use of SetThreadContext
                              PID:4284
                              • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
                                "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
                                2⤵
                                • System Location Discovery: System Language Discovery
                                PID:688

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

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

                              Filesize

                              1KB

                              MD5

                              963d39299cfb60c9762cf57f50427319

                              SHA1

                              17b37eb445afc40de279bc3738d4bfc1b2bf990a

                              SHA256

                              17192a4781c1a8b2c0259a51ccb3f9a26e9e9d728e16ef212f67d45ae30b7a61

                              SHA512

                              1447476ad853cc3589ddd9aa0a823745cc32e5a0a2a8a7e6aa07aa1770cb2ca508a78de52b2a0388ee0e805ef7cdcc8d9ede3c4d0265f4ca4a4542528f2e870f

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

                              Filesize

                              1KB

                              MD5

                              24665f65ce2269070655e53cb41499d2

                              SHA1

                              5197cdb7d25669d98e932313a3c2f9a7fde0d79c

                              SHA256

                              7f286808833b660fe28ee2296b1b366105b3fd8ea94dcf5098d3aba38148c1a6

                              SHA512

                              1dd1918a0ef0ec0e8bd355b45251eaa9159e6a36e46125e0f336344d0f5eb7ffe30956e9bbf00e1969afc0faef7a52d7e8f54df676525e9ff940b2206cd2ca93

                            • 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

                              8KB

                              MD5

                              5ab0b1a7e35681d609a2df8403085109

                              SHA1

                              66e42b0cd532234ae89780e03408c4e6ef92dd60

                              SHA256

                              3544a4ef82f4465458288725795c0430b9c0879881e63b50f30f8bf55aaa855a

                              SHA512

                              79bfdd19fb203784c707b9a1fbdea9475e3c7fd80f963345b748fa1cfb28ff7de8048dce3c20d41d60c115fbb3024daba7133112c30fdeec3822f6fcc0c1e565

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

                              Filesize

                              8KB

                              MD5

                              f1784463c6a327c4cd70842174ca3467

                              SHA1

                              64dec15bc17f895368e8ccc6d6d9c44f0e8443c0

                              SHA256

                              d25b87103acb0b7d1ef411f245e992c3272acc1f33f6bd773977af9b29c3252b

                              SHA512

                              1a0a83b1618156d10335f71ba582f25a0e41ee810c9d93881b18e3439c54b2585be7ebb886d7c7f5f6cbf18452be79d5f430de999d6b40c7839869fde3563ac8

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

                              Filesize

                              8KB

                              MD5

                              5760090c373ff66ba43b7ac8d320241e

                              SHA1

                              ff254194a3ff6f0007f5f3fb7d56e5a899f4bbc8

                              SHA256

                              96ce37c6758d18beed7be17f276e446589375e665a581adaa8d711a323716037

                              SHA512

                              0c3d03ed73023cb730c1500a89ec83945ba604003046c7d51abbecc44bd3b68a607febf48d4a068f2d9a43c8c4c1f9b4be93c548c1dfc978d32798d8332bd098

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

                              Filesize

                              8KB

                              MD5

                              a8bef548129df7110835f6e7b398ced1

                              SHA1

                              eeecf49a0ce152c1f2e94c9ebd149e09a6fdbde5

                              SHA256

                              edbe1f340d1d1dfd6a3146d13bca6e820843559029100f8d779d3a99536f07ee

                              SHA512

                              71b2cfd544fa5d31907e336f80f69150fd6688a63e3e96a274c087da9d7fd6dea7f86e4c71799c8696ae6c8c76ae959b2d8cd4fad1206648b81b9f8cab6af479

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

                              Filesize

                              8KB

                              MD5

                              b4d3fcc1af8b91c1c51d79e0cc1f0b37

                              SHA1

                              024cf39b4f5aab65dce90feb99c0e398a111ab9b

                              SHA256

                              a704aaa1430dadb8561634308b7191880fe529d4000c67b94c805a27bb58f039

                              SHA512

                              ec98fc378b7d9c70d48bb34bce757baa255d2c92ba827828306f87171b4fd3ea396b0bd96ca1df3edae3ecbaf6145fbaacd750a8d96f1fba4b4df1d49c9712af

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\GraphiteDawnCache\data_1

                              Filesize

                              264KB

                              MD5

                              c73b4d8dc87fb4677778affe23725fc1

                              SHA1

                              d116e19c6fcc42af55f1afd870dc15e2405ac7fd

                              SHA256

                              bf4ec11fbd1bba35e8e562529079141a35a3904ff62a45ca8511ed2d2adeec87

                              SHA512

                              4cc6719136654bf58ca0f0620ed8dd6c07c6051b1309fda0c44bbfb636ac6780063d2ce7b3109558a7c7e19d89726388a015bafe054395b884bdd772f2417fe5

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

                              Filesize

                              177KB

                              MD5

                              11b3de3371d82542b44e719f391df1e5

                              SHA1

                              36ad21a1c5321bee7f3e0854f4f0edf9ce19b714

                              SHA256

                              9fc7919fa3c0eb5aa45294a3c787df356707880dfdfb0ed4efa2eb1d2fdc0b8c

                              SHA512

                              b60a123eecfba983e5d43d70bf7e78f0121c05236d02de66cfc74187b1c2dce6ca827fcd89fb93014bff25aba53a89d126949fc303d6f6f988dc76641bffff54

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

                              Filesize

                              124KB

                              MD5

                              0c46d2a84a8891ca4c55e9f7f1c034c9

                              SHA1

                              5e2a2812b85ad7d09a093dd20c94fc54354d55d2

                              SHA256

                              394899b8c14f4c6b0b6b12cb6d196dc38e8b2de986680b99ac6612af7e30d6e3

                              SHA512

                              d7f44a2322e931c9c93ed0f2c825fd39ffe33cb798506a3a25fcefc4fc31eb16da1478619c8d52b9f323c6a2d53d03d7c1dc23566e81455d3f4563cfdb0debed

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

                              Filesize

                              124KB

                              MD5

                              fa6f1349e11e8f8ae3935fc6f6a2baba

                              SHA1

                              018b6c6897321725af1ee7413d9851eda7e8dc85

                              SHA256

                              6954aa81ed83028148b0db79fc736c0e8065d8e86bf80eaa0e7820a12d034313

                              SHA512

                              55fd14164e629562c8f2724cf3f6102f1f6014eec6dd6cdab061b2dc584b61dc32664c6d4921b9875e8eb873416ec0148625d22ed330e98f6f098b0aa395771a

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

                              Filesize

                              125KB

                              MD5

                              b469429fb60360a43554a627867f3efb

                              SHA1

                              68557a33ffa0eef85f8ab920c8758348527847e5

                              SHA256

                              69ec8629c2162f4e04abcc76a41499325c92c8f55a84b700667299dec211e8a6

                              SHA512

                              45c5e3c1bec355677726862ba82645760c50e8960f9b4b9fe5fcab3a581707986413398e51d88005e3ccdcef91dd980312ef5f17623f34e23f52e5d5f87c671d

                            • C:\Users\Admin\Downloads\file.zip.crdownload

                              Filesize

                              8.0MB

                              MD5

                              8a45b21de5ec621169f2e77ae96d2faf

                              SHA1

                              699046761789e3b1e18468e509f670b3347e67a3

                              SHA256

                              9077ef03723211f1f5cb3f26bc292f162d5de9900778042db47d74e437216142

                              SHA512

                              c045e0e6513e85ca4416982de9d83ed4565d811c6532ad1ccbc4c827aed85bd31a014df164a87e9e7cc7a2908e50d82c821d553da5e273f62151fda85292a463

                            • memory/4284-94-0x00000000008C0000-0x00000000008D0000-memory.dmp

                              Filesize

                              64KB

                            • memory/4980-59-0x0000000000400000-0x000000000045F000-memory.dmp

                              Filesize

                              380KB

                            • memory/4980-58-0x0000000000400000-0x000000000045F000-memory.dmp

                              Filesize

                              380KB

                            • memory/4980-57-0x0000000000400000-0x000000000045F000-memory.dmp

                              Filesize

                              380KB

                            • memory/4980-55-0x0000000000400000-0x000000000045F000-memory.dmp

                              Filesize

                              380KB

                            • memory/5064-54-0x0000000001600000-0x0000000001610000-memory.dmp

                              Filesize

                              64KB