Analysis

  • max time kernel
    40s
  • max time network
    40s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241023-en
  • resource tags

    arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04-02-2025 09:18

General

  • Target

    https://gofile.io/d/Qghnbe

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

98.218.3.74:4782

Mutex

d363416c-217e-45a7-a228-bcea554cbb52

Attributes
  • encryption_key

    3CD249B929C321E41C5A0D2E0931073C27A2E729

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    dlscord

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Downloads MZ/PE file 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 1 IoCs

    When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • NTFS ADS 3 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 37 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --start-maximized --single-argument https://gofile.io/d/Qghnbe
    1⤵
    • Enumerates system info in registry
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1644
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=90.0.4430.212 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=90.0.818.66 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7fffd3533cb8,0x7fffd3533cc8,0x7fffd3533cd8
      2⤵
        PID:332
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1936 /prefetch:2
        2⤵
          PID:4932
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2328 /prefetch:3
          2⤵
          • Downloads MZ/PE file
          • Suspicious behavior: EnumeratesProcesses
          PID:3120
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2720 /prefetch:8
          2⤵
            PID:2864
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3200 /prefetch:1
            2⤵
              PID:4208
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3208 /prefetch:1
              2⤵
                PID:904
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4520 /prefetch:1
                2⤵
                  PID:1860
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4748 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:4940
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4532 /prefetch:1
                  2⤵
                    PID:4320
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5764 /prefetch:1
                    2⤵
                      PID:2364
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=chrome.mojom.UtilReadIcon --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5608 /prefetch:8
                      2⤵
                        PID:1696
                      • C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\90.0.818.66\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5600 /prefetch:8
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:2328
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6280 /prefetch:8
                        2⤵
                        • Subvert Trust Controls: Mark-of-the-Web Bypass
                        • NTFS ADS
                        • Suspicious behavior: EnumeratesProcesses
                        PID:308
                      • C:\Users\Admin\Downloads\Client-built.exe
                        "C:\Users\Admin\Downloads\Client-built.exe"
                        2⤵
                        • Executes dropped EXE
                        • NTFS ADS
                        • Suspicious use of AdjustPrivilegeToken
                        PID:3132
                        • C:\Windows\SYSTEM32\schtasks.exe
                          "schtasks" /create /tn "dlscord" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
                          3⤵
                          • Scheduled Task/Job: Scheduled Task
                          PID:852
                        • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                          "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                          3⤵
                          • Executes dropped EXE
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of SetWindowsHookEx
                          PID:2344
                          • C:\Windows\SYSTEM32\schtasks.exe
                            "schtasks" /create /tn "dlscord" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
                            4⤵
                            • Scheduled Task/Job: Scheduled Task
                            PID:1444
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2964 /prefetch:1
                        2⤵
                          PID:1080
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2756 /prefetch:1
                          2⤵
                            PID:3124
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=17 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5804 /prefetch:1
                            2⤵
                              PID:4368
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1864,12644902396864323991,407823312923612296,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=18 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4532 /prefetch:1
                              2⤵
                                PID:4532
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:5060
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:632

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                  Filesize

                                  152B

                                  MD5

                                  5431d6602455a6db6e087223dd47f600

                                  SHA1

                                  27255756dfecd4e0afe4f1185e7708a3d07dea6e

                                  SHA256

                                  7502d9453168c86631fb40ec90567bf80404615d387afc7ec2beb7a075bcc763

                                  SHA512

                                  868f6dcf32ef80459f3ea122b0d2c79191193b5885c86934a97bfec7e64250e10c23e4d00f34c6c2387a04a15f3f266af96e571bbe37077fb374d6d30f35b829

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                  Filesize

                                  152B

                                  MD5

                                  7bed1eca5620a49f52232fd55246d09a

                                  SHA1

                                  e429d9d401099a1917a6fb31ab2cf65fcee22030

                                  SHA256

                                  49c484f08c5e22ee6bec6d23681b26b0426ee37b54020f823a2908ab7d0d805e

                                  SHA512

                                  afc8f0b5b95d593f863ad32186d1af4ca333710bcfba86416800e79528616e7b15f8813a20c2cfa9d13688c151bf8c85db454a9eb5c956d6e49db84b4b222ee8

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                                  Filesize

                                  144B

                                  MD5

                                  23f6a1cf8efd039b4f7819f3cd88500b

                                  SHA1

                                  bcced77b1ab36c79b5543c747afa2beed31525f2

                                  SHA256

                                  f87f1968f49bbe600a16469c35fe1b90789b89bd9853a6c527d83ce9347b7cee

                                  SHA512

                                  c4300f7fdc0240331df81ecc8c4fb7c8a9d97cd38af6711b91b0dca0a4b6e5ba4c0013426cb789bfc9fd6af1fd9edd10c6c882946981d15439ace44bf817009c

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                  Filesize

                                  6KB

                                  MD5

                                  2289ab7e52bd746be649c2d10bdaa01b

                                  SHA1

                                  9a545e2a03581f922710ba2121117a0dbcbdf45c

                                  SHA256

                                  f6377adbbdc202e07331da4eb88ddff1ae7bc351729066e13158e3b706b708fe

                                  SHA512

                                  e92436f8e7cf32bba80894c8debc084638b665671968d586b99d8a56e079376a08d0e4bff97dfa2fb4e72bbb2e22277f6c5ba1fc554b35ccf51faa3a932e66cd

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                  Filesize

                                  5KB

                                  MD5

                                  fa613f84abd3b612bd58408dce619e90

                                  SHA1

                                  e7bbbde99a459a6afd84f38ca1c3f3446ffd8562

                                  SHA256

                                  7b3322c180c1766bf983ab7b6c95a0ce767d4039963fc49caafe1437eb72b870

                                  SHA512

                                  386b551e13ac2020f704c3975064ba2b0641cc5b09a19c31bfb33b288f4083afa2d8c00911c90c69d030f4d5e5403574ddf43572da33e934db271966645a885c

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                  Filesize

                                  16B

                                  MD5

                                  46295cac801e5d4857d09837238a6394

                                  SHA1

                                  44e0fa1b517dbf802b18faf0785eeea6ac51594b

                                  SHA256

                                  0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443

                                  SHA512

                                  8969402593f927350e2ceb4b5bc2a277f3754697c1961e3d6237da322257fbab42909e1a742e22223447f3a4805f8d8ef525432a7c3515a549e984d3eff72b23

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                  Filesize

                                  16B

                                  MD5

                                  206702161f94c5cd39fadd03f4014d98

                                  SHA1

                                  bd8bfc144fb5326d21bd1531523d9fb50e1b600a

                                  SHA256

                                  1005a525006f148c86efcbfb36c6eac091b311532448010f70f7de9a68007167

                                  SHA512

                                  0af09f26941b11991c750d1a2b525c39a8970900e98cba96fd1b55dbf93fee79e18b8aab258f48b4f7bda40d059629bc7770d84371235cdb1352a4f17f80e145

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                  Filesize

                                  10KB

                                  MD5

                                  a1ee2b73a341279c2cc3290825ca2e0c

                                  SHA1

                                  c3604cb5f3c1be5353624057c120e7a5c887e901

                                  SHA256

                                  3a6059d32c1da4ea016ecb3f7ed2e79ae80f32368e1eb58b6cf923008e378352

                                  SHA512

                                  0647cce8cc8baf180ede9b659085f076c5a35a283f5943563412d71bd36a3afb1786484c15344efe8d05877e138ac4e92e3273a62c20ca1bb4c41a60105719e0

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State

                                  Filesize

                                  10KB

                                  MD5

                                  f8c16b464ef99b4bd7e5527085a89a62

                                  SHA1

                                  7d85f65312626735cb4d3f082f451f032f4d8707

                                  SHA256

                                  790c34cf2cff4b1bf34b010faaf053b1d78439435a40de8c830c36bfa2873b68

                                  SHA512

                                  9556be1b096f28ffcbc83460d6a1cd544ce963524825736ce38410a93f26eab46eb5afba329c97706a65f93e3f1eec24b960c9c59bebb0290cb12af036c4236f

                                • C:\Users\Admin\Downloads\Client-built.exe:Zone.Identifier

                                  Filesize

                                  26B

                                  MD5

                                  fbccf14d504b7b2dbcb5a5bda75bd93b

                                  SHA1

                                  d59fc84cdd5217c6cf74785703655f78da6b582b

                                  SHA256

                                  eacd09517ce90d34ba562171d15ac40d302f0e691b439f91be1b6406e25f5913

                                  SHA512

                                  aa1d2b1ea3c9de3ccadb319d4e3e3276a2f27dd1a5244fe72de2b6f94083dddc762480482c5c2e53f803cd9e3973ddefc68966f974e124307b5043e654443b98

                                • C:\Users\Admin\Downloads\Unconfirmed 420622.crdownload

                                  Filesize

                                  3.1MB

                                  MD5

                                  37390da369108249457dd4fa9d71374a

                                  SHA1

                                  b4a1d1e2ea0762ed45cc93ed236763756dfc53df

                                  SHA256

                                  8a1d71513cdce5e817498afbad431e391d3175b214c413865002e867ac1d3d00

                                  SHA512

                                  dfd1013637e17c45eee06815e26f9a271d68b6df4e088cbb69f6558228cda9876ad60c89d703e4ec2fe693f9c7064533d3b479e867db2c349e668c043ac79fed

                                • memory/2344-110-0x000000001C230000-0x000000001C280000-memory.dmp

                                  Filesize

                                  320KB

                                • memory/2344-111-0x000000001C340000-0x000000001C3F2000-memory.dmp

                                  Filesize

                                  712KB

                                • memory/3132-102-0x0000000000360000-0x0000000000684000-memory.dmp

                                  Filesize

                                  3.1MB