Analysis

  • max time kernel
    50s
  • max time network
    49s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/10/2024, 00:23

General

  • Target

    https://gofile.io/d/Vw475K

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.28:4782

Mutex

03ef2b9a-5389-4312-b3d3-9b6f68cc5386

Attributes
  • encryption_key

    F8A900CD75D848E74023B3A66FA8AA5469C97692

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    ahhaa

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 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 8 IoCs
  • Suspicious behavior: LoadsDriver 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 36 IoCs
  • Suspicious use of SendNotifyMessage 24 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/Vw475K
    1⤵
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:5080
    • 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=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ff994ef46f8,0x7ff994ef4708,0x7ff994ef4718
      2⤵
        PID:2964
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1996 /prefetch:2
        2⤵
          PID:4264
        • 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=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2168 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:3252
        • 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=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2892 /prefetch:8
          2⤵
            PID:3948
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --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=3372 /prefetch:1
            2⤵
              PID:2344
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --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=3384 /prefetch:1
              2⤵
                PID:2924
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --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=4696 /prefetch:1
                2⤵
                  PID:1484
                • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5232 /prefetch:8
                  2⤵
                    PID:4080
                  • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5232 /prefetch:8
                    2⤵
                    • Suspicious behavior: EnumeratesProcesses
                    PID:5008
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --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=5040 /prefetch:1
                    2⤵
                      PID:4008
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=edge_collections.mojom.CollectionsDataManager --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5592 /prefetch:8
                      2⤵
                        PID:1600
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4816 /prefetch:1
                        2⤵
                          PID:3256
                        • 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=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5720 /prefetch:8
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:4652
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6080 /prefetch:1
                          2⤵
                            PID:5344
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --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=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6120 /prefetch:1
                            2⤵
                              PID:5352
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6280 /prefetch:1
                              2⤵
                                PID:5616
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1984,16180059199748684499,6397898465001018936,131072 --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=17 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6272 /prefetch:1
                                2⤵
                                  PID:5624
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:3628
                                • C:\Windows\System32\CompPkgSrv.exe
                                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                                  1⤵
                                    PID:4080
                                  • C:\Windows\System32\rundll32.exe
                                    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                    1⤵
                                      PID:5232
                                    • C:\Program Files\7-Zip\7zG.exe
                                      "C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Downloads\Spoofers\" -spe -an -ai#7zMap24450:76:7zEvent24217
                                      1⤵
                                      • Suspicious use of AdjustPrivilegeToken
                                      • Suspicious use of FindShellTrayWindow
                                      PID:5564
                                    • C:\Users\Admin\Downloads\Spoofers\PermWoofer.exe
                                      "C:\Users\Admin\Downloads\Spoofers\PermWoofer.exe"
                                      1⤵
                                      • Executes dropped EXE
                                      • Suspicious use of AdjustPrivilegeToken
                                      PID:6040
                                      • C:\Windows\SYSTEM32\schtasks.exe
                                        "schtasks" /create /tn "ahhaa" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
                                        2⤵
                                        • Scheduled Task/Job: Scheduled Task
                                        PID:6140
                                      • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
                                        "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
                                        2⤵
                                        • Executes dropped EXE
                                        • Suspicious use of AdjustPrivilegeToken
                                        • Suspicious use of SetWindowsHookEx
                                        PID:1160
                                        • C:\Windows\SYSTEM32\schtasks.exe
                                          "schtasks" /create /tn "ahhaa" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
                                          3⤵
                                          • Scheduled Task/Job: Scheduled Task
                                          PID:5232

                                    Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

                                    Loading Replay Monitor...

                                    Downloads

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

                                      Filesize

                                      152B

                                      MD5

                                      dc058ebc0f8181946a312f0be99ed79c

                                      SHA1

                                      0c6f376ed8f2d4c275336048c7c9ef9edf18bff0

                                      SHA256

                                      378701e87dcff90aa092702bc299859d6ae8f7e313f773bf594f81df6f40bf6a

                                      SHA512

                                      36e0de64a554762b28045baebf9f71930c59d608f8d05c5faf8906d62eaf83f6d856ef1d1b38110e512fbb1a85d3e2310be11a7f679c6b5b3c62313cc7af52aa

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

                                      Filesize

                                      152B

                                      MD5

                                      a0486d6f8406d852dd805b66ff467692

                                      SHA1

                                      77ba1f63142e86b21c951b808f4bc5d8ed89b571

                                      SHA256

                                      c0745fd195f3a51b27e4d35a626378a62935dccebefb94db404166befd68b2be

                                      SHA512

                                      065a62032eb799fade5fe75f390e7ab3c9442d74cb8b520d846662d144433f39b9186b3ef3db3480cd1d1d655d8f0630855ed5d6e85cf157a40c38a19375ed8a

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

                                      Filesize

                                      288B

                                      MD5

                                      642092a09a691fbd13becc0bd8be0460

                                      SHA1

                                      cf0fa4e776ce0e6501bfb09e8db228eca470310e

                                      SHA256

                                      65e7138458ac6ab15d9533e1c822498e3c30bbf8e5744fc4bb62ac4cb865c43b

                                      SHA512

                                      2080d428eb7d6a41d90f6cfc19e4cf32e15a68be2468039b24c9b6dddb96ba3765c314626fcd658223223e610b2e3724e569db7f11f783cdbfaaf7cf5b2e5f3b

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

                                      Filesize

                                      6KB

                                      MD5

                                      6e0aee3290a84bbf20cb2e17bc57aa01

                                      SHA1

                                      7c43e8af22beffdd500968c9f24d953cb6feea61

                                      SHA256

                                      d5b7308fbfe206228ae85e71edb9239937c66bedc2acda4de2347efcc9333d56

                                      SHA512

                                      afc9e868dc8c1881903c5b5c504cc0ddfd1ca63de4461cc1f314c31e48bfe40491521dfc409798b3f22776b1bb68bc8841263ce3f52d29eea4b7c1a385fff702

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

                                      Filesize

                                      5KB

                                      MD5

                                      a6c8ef734304c7a5046db9b492c02dea

                                      SHA1

                                      0d10324d9c08aa170cc2a2373833956277a8d740

                                      SHA256

                                      68635957d709478f7e0c6b37491cebd00db5cb0b109364951fcf8d7a6ff765e3

                                      SHA512

                                      3c337a0f27b7a5d616d781fe138f48ce0ab4eb5f7f12248de3ddb6e636af0c3065aa4aec33c3f89643c0bf0632aeecde7a0aaff9a92ed700eff26008a9104cd2

                                    • 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\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\Local State

                                      Filesize

                                      11KB

                                      MD5

                                      00c1485223587ef95308219c1d9bf624

                                      SHA1

                                      d34aa825338fa6444945b4c725239fe5d73ee48f

                                      SHA256

                                      3caa89656d93b89f8410b0e8a4b6c35b6fdc4054325c744736aa516c411c70af

                                      SHA512

                                      2895338eea714e967a6db233aafdcd39c3fe8040c1c4c1bab91d1857cd12552e9cfb40a64180585d47e166df23cd4d702ff381f1d7c2a36835fad37ac362bb3d

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

                                      Filesize

                                      11KB

                                      MD5

                                      0f585400fa3ace4021c0ed50c1eebfcd

                                      SHA1

                                      aeed811bc4332979aab645519df73ec3aaadd8b0

                                      SHA256

                                      4a6d4a6d755ef702f9b30dfb3a84781e28503d3c0f7d5ad472f9b807dc452ad1

                                      SHA512

                                      b01c8634f34e74d01133486e34a1d1143ca4f47d41b2b607f843ce72ca210d3afa6df006855a0572db6fc0ec88a29a9daae1df2f5fd18039850ff6af8fc624ef

                                    • C:\Users\Admin\Downloads\Spoofers.7z

                                      Filesize

                                      8.2MB

                                      MD5

                                      cb7960f8fb08dc1d63269e205e490b03

                                      SHA1

                                      184d929681a0d5ae239f148214ee5d070b1adc69

                                      SHA256

                                      4fa37e700c2b9ee257995cc82ad1f02b02bf5b031a5fda15ff34277c82239d8a

                                      SHA512

                                      852ea8344772464f4bdbca2108a33bc156b2c7d99ff40588a07e98c055a996567496196f5f1fe7512a1d8cb7a8e132942f7c1a157ad45fe6314838c13ed5eb12

                                    • C:\Users\Admin\Downloads\Spoofers\PermWoofer.exe

                                      Filesize

                                      3.1MB

                                      MD5

                                      b4ac68d3c6cc89ae97e519b9a7241bba

                                      SHA1

                                      ced8a4dec2238bc5f2b7ca9ef9fdac0a6cd9108f

                                      SHA256

                                      03bc2c340a1081e1521a5c4b92c38756f4de234ac1b1a578556d83737972e343

                                      SHA512

                                      8870741c08574945ea43055e6031394af96290348e4e55d3570f937020c49020fc7d61517d9ab9dd42fc65066ba113cb8a31f2d45cff7f7301f8e865d52aa1d5

                                    • memory/1160-148-0x000000001B700000-0x000000001B750000-memory.dmp

                                      Filesize

                                      320KB

                                    • memory/1160-149-0x000000001BF20000-0x000000001BFD2000-memory.dmp

                                      Filesize

                                      712KB

                                    • memory/6040-141-0x0000000000380000-0x00000000006A4000-memory.dmp

                                      Filesize

                                      3.1MB