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Resubmissions

11/12/2024, 06:44

241211-hhn3ea1pdy 10

Analysis

  • max time kernel
    261s
  • max time network
    263s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    11/12/2024, 06:44

General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • MD5

    e0699b38d78bd176894b991247cf6403

  • SHA1

    bcd66b55530c7ed68983c7a01f6ec867ba5b5649

  • SHA256

    0ed68bd071d4ada79ef6ae867bef72436e980e4b8295ef5c005058756cbaf1c7

  • SHA512

    d132f2dc2f275cb02050e765f86db40951824a86edcbbcb937a6c444a5f151453a0aff859676b974e1b90baea1bc59054ed27fef6e523eb6e0c99120c67781c1

  • SSDEEP

    49152:LvbI22SsaNYfdPBldt698dBcjHv/43OarfLoGdTTHHB72eh2NT:Lvk22SsaNYfdPBldt6+dBcjH437

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.58:4782

Mutex

1d5a53de-53d3-4349-abab-ee1b0579f85f

Attributes
  • encryption_key

    56B4C4DAE2FF0461296EBCFD733DDB88E29C8E38

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 27 IoCs
  • Suspicious use of SendNotifyMessage 25 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client-built.exe
    "C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4952
  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe"
    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:3024
    • 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=0x220,0x224,0x228,0x204,0x22c,0x7ffec8eacc40,0x7ffec8eacc4c,0x7ffec8eacc58
      2⤵
        PID:1376
      • 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=1988,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=1984 /prefetch:2
        2⤵
          PID:1824
        • 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=1888,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=1772 /prefetch:3
          2⤵
            PID:3596
          • 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=2212,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=2568 /prefetch:8
            2⤵
              PID:4720
            • 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=3148,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3168 /prefetch:1
              2⤵
                PID:2072
              • 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=3184,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=3208 /prefetch:1
                2⤵
                  PID:5052
                • 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=4544,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4600 /prefetch:1
                  2⤵
                    PID:4076
                  • 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=4876,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4864 /prefetch:8
                    2⤵
                      PID:1712
                    • 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=5088,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=5072 /prefetch:8
                      2⤵
                        PID:2444
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4912,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=5004 /prefetch:8
                        2⤵
                          PID:4324
                        • 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=5228,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=5100 /prefetch:8
                          2⤵
                            PID:4704
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=5232,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=5148 /prefetch:8
                            2⤵
                              PID:4444
                            • 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=5124,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=5240 /prefetch:8
                              2⤵
                                PID:4928
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --extension-process --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --field-trial-handle=5052,i,16505604516733211954,16572929283599730793,262144 --variations-seed-version=20241022-180310.361000 --mojo-platform-channel-handle=4896 /prefetch:2
                                2⤵
                                  PID:4352
                              • 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:560
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                                  1⤵
                                    PID:4060

                                  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

                                    6f44308e534158ab4402ddf0f2093be5

                                    SHA1

                                    405c36db1dc0a065b36a871580a9e73a76bf8559

                                    SHA256

                                    f3390814a60083b0f8d7e753ccfcd89ab4efc9e1f4175fed9df91331a25a906c

                                    SHA512

                                    48bd4bf18272d0ccd16e2ffa0233ad7257dd8ac6d6accd51bd4d2759333a8587bf3b0840cd7b856b960e3176b67f4f1bfb2d0d610a3cf61ef09a3df7b93e0bd8

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\ghbmnnjooekpmoecnnnilnnbdlolhkhi\1.84.1_0\_locales\en_CA\messages.json

                                    Filesize

                                    851B

                                    MD5

                                    07ffbe5f24ca348723ff8c6c488abfb8

                                    SHA1

                                    6dc2851e39b2ee38f88cf5c35a90171dbea5b690

                                    SHA256

                                    6895648577286002f1dc9c3366f558484eb7020d52bbf64a296406e61d09599c

                                    SHA512

                                    7ed2c8db851a84f614d5daf1d5fe633bd70301fd7ff8a6723430f05f642ceb3b1ad0a40de65b224661c782ffcec69d996ebe3e5bb6b2f478181e9a07d8cd41f6

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Extensions\ghbmnnjooekpmoecnnnilnnbdlolhkhi\1.84.1_0\dasherSettingSchema.json

                                    Filesize

                                    854B

                                    MD5

                                    4ec1df2da46182103d2ffc3b92d20ca5

                                    SHA1

                                    fb9d1ba3710cf31a87165317c6edc110e98994ce

                                    SHA256

                                    6c69ce0fe6fab14f1990a320d704fee362c175c00eb6c9224aa6f41108918ca6

                                    SHA512

                                    939d81e6a82b10ff73a35c931052d8d53d42d915e526665079eeb4820df4d70f1c6aebab70b59519a0014a48514833fefd687d5a3ed1b06482223a168292105d

                                  • 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\Network\TransportSecurity

                                    Filesize

                                    356B

                                    MD5

                                    71ecd691ee550f6a1ed06257d9b60e45

                                    SHA1

                                    2c6500ea13a855c165ba0d69ac6235ed0f3d2738

                                    SHA256

                                    a579529429f21f36b6189fdda8af804bd9ee7ae4d650e33f24c3449e573d4e2e

                                    SHA512

                                    d2941911b579ce7189ea87596a7dff28dca5c77db623b0db1b36cd03a4e17c14f36ea06cbf97d60456915d27869701c21c3a5e5e9019e3858daca25531e3f9eb

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

                                    Filesize

                                    9KB

                                    MD5

                                    22b611c9b9cb3c1aadc751f873a4e3f6

                                    SHA1

                                    0f3f3591524198ee371a5ac6fe5c778daa612b91

                                    SHA256

                                    0224dab6cb1142ba1d4c377360f4b8b8b151f3d7e31342c54569b281a951ddc6

                                    SHA512

                                    3f5fcec64e8bd2f6d02e35e34b242801e5a64c0ac79bd173709dcf528f1bbece8fa04ab3cb612cecd96265d8bcf6cb500a315dd804e0eada31fefff3cd3d1871

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

                                    Filesize

                                    9KB

                                    MD5

                                    24a663eaa8296066d49d60ccc90f81d1

                                    SHA1

                                    a40010c305f2871362de7a712dfb9e1681ac7b45

                                    SHA256

                                    12d8b388125a214beaf9b2b371932845520f0bf23709a25180ee22a53c545a35

                                    SHA512

                                    8158abd6c0520c5d876627f43636f77e13191e60840f9fa0b3fe82cdf4978741ac0d2b98a269b6a278ac58c3759fe1126b8539d82a7fa2a0819f4895d46ee691

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

                                    Filesize

                                    15KB

                                    MD5

                                    c2ccf60f05259d58756e341edfc84fc9

                                    SHA1

                                    ba8c98cb6d3a15508aa9f75cf56fbdad349b0177

                                    SHA256

                                    3ba893ed7e72674c745a0b85e817541743ffe69aebed82ae9ecdd3511ff2b0ca

                                    SHA512

                                    3d6b48f8e1cc90edf7e3676df1d6e0e79703900f84b3759fbed35095d272608f56f465e62136267248b3f934fc900b632bd7bbb7a5a6df6fc2aa9c25833bcd2b

                                  • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index

                                    Filesize

                                    72B

                                    MD5

                                    a2c265134e3cbbcee8f489642c6ace94

                                    SHA1

                                    c56ed61daeb2b7bc9928f3f5af07bd1d1296e767

                                    SHA256

                                    b9c435fad0d6ff52f8d247d45dc76e71844bfe262d7df578f2fac563db5a8b28

                                    SHA512

                                    7ebb9fe554a295ef736883598d9ebe928d5ea447a748dbef766c3b6534fdbe42870e5d7a38ca05ca37b9b7d1485a60b94f9554e6291aab8d3eab9d76ac0e39b9

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

                                    Filesize

                                    233KB

                                    MD5

                                    cfae88644a70930cac2c9d0b8ba0b71d

                                    SHA1

                                    858a616a41c2c580510e91f81725ac37363e81be

                                    SHA256

                                    f31f9d3c73cd3f965acffbb2ad269830effcb12a662ced155440be8496fd224c

                                    SHA512

                                    f96c6bdc8721ef18c3fe6f04757efb4615c85a60ae032fcfe175657120c0187a79bf4e996f057e393f3b548f2b422af43972cfabdc5019d5fc228092fa659ba6

                                  • C:\Users\Admin\AppData\Local\Temp\scoped_dir3024_775357229\CRX_INSTALL\_locales\en_CA\messages.json

                                    Filesize

                                    711B

                                    MD5

                                    558659936250e03cc14b60ebf648aa09

                                    SHA1

                                    32f1ce0361bbfdff11e2ffd53d3ae88a8b81a825

                                    SHA256

                                    2445cad863be47bb1c15b57a4960b7b0d01864e63cdfde6395f3b2689dc1444b

                                    SHA512

                                    1632f5a3cd71887774bf3cb8a4d8b787ea6278271657b0f1d113dbe1a7fd42c4daa717cc449f157ce8972037572b882dc946a7dc2c0e549d71982dcdee89f727

                                  • memory/4952-1-0x0000000000970000-0x0000000000C94000-memory.dmp

                                    Filesize

                                    3.1MB

                                  • memory/4952-2-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

                                    Filesize

                                    10.8MB

                                  • memory/4952-3-0x000000001CC90000-0x000000001CCE0000-memory.dmp

                                    Filesize

                                    320KB

                                  • memory/4952-0-0x00007FFECE453000-0x00007FFECE455000-memory.dmp

                                    Filesize

                                    8KB

                                  • memory/4952-4-0x000000001CDA0000-0x000000001CE52000-memory.dmp

                                    Filesize

                                    712KB

                                  • memory/4952-6-0x00007FFECE450000-0x00007FFECEF12000-memory.dmp

                                    Filesize

                                    10.8MB

                                  • memory/4952-5-0x00007FFECE453000-0x00007FFECE455000-memory.dmp

                                    Filesize

                                    8KB