Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-es
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-eslocale:es-esos:windows10-2004-x64systemwindows
  • submitted
    15/09/2024, 05:19

General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • MD5

    0e7400b7962021524550a5736d4c568d

  • SHA1

    517654e75ee5ac6581efdebf7ac55ffb4961452f

  • SHA256

    de51a9e30c97ce174b36d20b3dcadd6f5b3ed330491413373244813d36e6d3d5

  • SHA512

    f7ba6f8ee3b4ba0b119691876c1c8db8064dbe72e7dc8225192d6d70ce7f35837a8fed25d168a8d0cb23f53c1034de3eb1e6d3eab5d60b66b40ff10739cebe8d

  • SSDEEP

    49152:CvilL26AaNeWgPhlmVqvMQ7XSKi1RJ6JbR3LoGdM4THHB72eh2NT:CvaL26AaNeWgPhlmVqkQ7XSKi1RJ6L

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

23.84.85.170:3389

23.84.85.170:2032

Mutex

91e4434c-ab59-4a1a-931f-bd0739545abc

Attributes
  • encryption_key

    043DA72868D75E77D6E7D6B34CDE151E7FD08F30

  • 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 payload 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 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
    PID:2996
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\Desktop\LimitUnblock.html
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1196
    • 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=0x11c,0x120,0x124,0xf8,0x128,0x7ff8cb1b46f8,0x7ff8cb1b4708,0x7ff8cb1b4718
      2⤵
        PID:4196
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2164 /prefetch:2
        2⤵
          PID:4352
        • 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=2152,542697916055335621,1715360925291472317,131072 --lang=es --service-sandbox-type=none --mojo-platform-channel-handle=2268 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2884
        • 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=2152,542697916055335621,1715360925291472317,131072 --lang=es --service-sandbox-type=utility --mojo-platform-channel-handle=2700 /prefetch:8
          2⤵
            PID:2940
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --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=3324 /prefetch:1
            2⤵
              PID:2240
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --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=3348 /prefetch:1
              2⤵
                PID:4560
              • 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=2152,542697916055335621,1715360925291472317,131072 --lang=es --service-sandbox-type=none --mojo-platform-channel-handle=5112 /prefetch:8
                2⤵
                  PID:3292
                • 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=2152,542697916055335621,1715360925291472317,131072 --lang=es --service-sandbox-type=none --mojo-platform-channel-handle=5112 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:4088
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4740 /prefetch:1
                  2⤵
                    PID:4332
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --disable-client-side-phishing-detection --instant-process --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=5264 /prefetch:1
                    2⤵
                      PID:1776
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4112 /prefetch:1
                      2⤵
                        PID:908
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --disable-client-side-phishing-detection --instant-process --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=5604 /prefetch:1
                        2⤵
                          PID:4612
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --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=5868 /prefetch:1
                          2⤵
                            PID:456
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5140 /prefetch:1
                            2⤵
                              PID:1020
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=audio.mojom.AudioService --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --service-sandbox-type=audio --mojo-platform-channel-handle=5196 /prefetch:8
                              2⤵
                                PID:4420
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=video_capture.mojom.VideoCaptureService --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --service-sandbox-type=video_capture --mojo-platform-channel-handle=5324 /prefetch:8
                                2⤵
                                • Modifies registry class
                                • Suspicious behavior: EnumeratesProcesses
                                PID:1016
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2152,542697916055335621,1715360925291472317,131072 --lang=es --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=5372 /prefetch:1
                                2⤵
                                  PID:4764
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:2644
                                • C:\Windows\System32\CompPkgSrv.exe
                                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                                  1⤵
                                    PID:2236
                                  • C:\Windows\system32\AUDIODG.EXE
                                    C:\Windows\system32\AUDIODG.EXE 0x320 0x468
                                    1⤵
                                      PID:1612

                                    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

                                            0446fcdd21b016db1f468971fb82a488

                                            SHA1

                                            726b91562bb75f80981f381e3c69d7d832c87c9d

                                            SHA256

                                            62c5dc18b25e758f3508582a7c58bb46b734a774d97fc0e8a20614235caa8222

                                            SHA512

                                            1df7c085042266959f1fe0aedc5f6d40ceba485b54159f51f0c38f17bb250b79ea941b735e1b6faf219f23fe8ab65ac4557f545519d52d5416b89ad0f9047a31

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

                                            Filesize

                                            152B

                                            MD5

                                            9b008261dda31857d68792b46af6dd6d

                                            SHA1

                                            e82dc88e2d1da2df7cb19d79a0346b9bb90d52b3

                                            SHA256

                                            9ac598d4f8170f7e475d84103aead9e3c23d5f2d292741a7f56a17bde8b6f7da

                                            SHA512

                                            78853091403a06beeec4998e2e3a4342111895ffd485f7f7cd367741a4883f7a25864cba00a6c86f27dc0c9ce9d04f08011ecc40c8ae9383d33274739ac39f10

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

                                            Filesize

                                            1KB

                                            MD5

                                            526a935033fa422439f9793fc689b5b8

                                            SHA1

                                            2908b172b4c8eebfac0b7d5d4cc452b3bad99688

                                            SHA256

                                            d16ae4e1c8ae8710a83333f5c7fc2ed8d16b60cda3c372a91c3afa41ea827772

                                            SHA512

                                            801e343a3fde211976d6594176b860a79460f5cdd740339273e2235e71e2c92a992b3ae400774c601a11c595b69919195096d91d79019421551c7ed23a9976b2

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

                                            Filesize

                                            555B

                                            MD5

                                            2040abffbe6f0c54f29b40c00778db02

                                            SHA1

                                            9d18911967e1d704fe9aaca4ca0eb7ba39ae5898

                                            SHA256

                                            f59f0ad260df64ac190c35ea24ce28f5e33329a7db792486b3f7162fea0f9e3d

                                            SHA512

                                            6cd7aa55b504dd166ab5a030e8a51257403640e9ba65e164392585e0dc9fc479c2a1c2313f4eb9d51a4d7672a2006270406482e936047152dfdb77052ac5f6c9

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

                                            Filesize

                                            5KB

                                            MD5

                                            07f7c755ec4810fdee6112a9ccc3af07

                                            SHA1

                                            a33b3c72d5ef5397418b3e35f93234cd5cca327c

                                            SHA256

                                            b782040090f67a1959674eb6148fe0d988f70c6213e93d1597d55324a3ec4745

                                            SHA512

                                            7052d0c8206fcc01178c2f79f7b9c875e0a5c2adf5d08fac4ed3e00622583ed1e947a50ef20f301dafb495aec47a4c5e203dc8daeda8ea6b0a94ba6f386e44d3

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

                                            Filesize

                                            6KB

                                            MD5

                                            88ee67b9ca540f7f29dfcc71083dc74c

                                            SHA1

                                            66568caed8a63518e7a6026a5e1f67089c1a6b04

                                            SHA256

                                            4cb3852e307ee2f28ff146076ae5e49a038046190540feaa0298eb5d355b8c18

                                            SHA512

                                            3c3fc3c33b519774a9685cef475cdd6d079e43978b10347d662861692ef89b660e2eaa88779b551e709132e156527c5ddeb353650886d2b9087ff39507e5dc6f

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

                                            Filesize

                                            6KB

                                            MD5

                                            1d6228963da6e68d5e66f91044b1bf67

                                            SHA1

                                            7f14aa11ddd5f5fc1b971ea059659537fefe5e38

                                            SHA256

                                            414f193aed9354ef149242e02760a3078e18867828dc8d1aab3aac2682835f66

                                            SHA512

                                            1a3e514ba0e0cbaebfa8d4c881d949fac6353757b9a0d3a657cff363f1086613fe73cbd2a4277ac6a94db9a540eef842978d560ee1bcbbc734ef2540d0012857

                                          • 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

                                            d033fb91d3f70e33d2656694d906b877

                                            SHA1

                                            40e3799e59979fcce840e6f24164dab088c03d2d

                                            SHA256

                                            e9398877629c57eadca1bf67f01fa86dac65803734283f6d193a17be59287503

                                            SHA512

                                            ffabb5ff983ae443215816370acbb78b166c90df566261f79495a96dd1406822c316aca6668519af03edf664cb3135486150e40faa2e3cf7507f7cd308cabc2e

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

                                            Filesize

                                            10KB

                                            MD5

                                            dc08676544d05443584bc82283c547d7

                                            SHA1

                                            4a9e72b30c52e46cd47d69515f094862e46ad1de

                                            SHA256

                                            003606917fcba3be788a93fa25c9dbe9ccc2b3d75190ebaff8cf4088e89603e0

                                            SHA512

                                            d2193c30ff400a0d5ac708c2de367de29b3d9d6693d8d66a7b0e41059939397b5087095380ecfe2b11e82317e20d5d798273e2f6b33e198f9d276a33e1b58521

                                          • memory/2996-5-0x00007FF8D01D3000-0x00007FF8D01D5000-memory.dmp

                                            Filesize

                                            8KB

                                          • memory/2996-12-0x000000001C960000-0x000000001CA62000-memory.dmp

                                            Filesize

                                            1.0MB

                                          • memory/2996-11-0x000000001C800000-0x000000001C84A000-memory.dmp

                                            Filesize

                                            296KB

                                          • memory/2996-10-0x000000001C6C0000-0x000000001C6FC000-memory.dmp

                                            Filesize

                                            240KB

                                          • memory/2996-9-0x000000001BD10000-0x000000001BD22000-memory.dmp

                                            Filesize

                                            72KB

                                          • memory/2996-6-0x00007FF8D01D0000-0x00007FF8D0C91000-memory.dmp

                                            Filesize

                                            10.8MB

                                          • memory/2996-0-0x00007FF8D01D3000-0x00007FF8D01D5000-memory.dmp

                                            Filesize

                                            8KB

                                          • memory/2996-4-0x000000001BD90000-0x000000001BE42000-memory.dmp

                                            Filesize

                                            712KB

                                          • memory/2996-3-0x000000001BC80000-0x000000001BCD0000-memory.dmp

                                            Filesize

                                            320KB

                                          • memory/2996-2-0x00007FF8D01D0000-0x00007FF8D0C91000-memory.dmp

                                            Filesize

                                            10.8MB

                                          • memory/2996-1-0x00000000009F0000-0x0000000000D14000-memory.dmp

                                            Filesize

                                            3.1MB