Analysis

  • max time kernel
    1794s
  • max time network
    1808s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/02/2024, 18:53

General

  • Target
    rat.exe
  • Size 3.1MB
  • Sample240221-xjqpyseb28
  • SHA256 7ed672be4c63c1e9c726843a76a8ba96af26c242742b9feb69e51ac3b681cf6f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • nayef.ddns.net:4782

Mutex
  • d4cc8fd4-c53a-41d0-8597-9c4d66a686e4

Attributes
  • encryption_key

    207983DF7933102376491C87A7AF844DA0465E51

  • install_name

    Windows Wireless LAN.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Wireless LAN

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 25 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:\Users\Admin\AppData\Local\Temp\rat.exe
    "C:\Users\Admin\AppData\Local\Temp\rat.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4164
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "Windows Wireless LAN" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Windows Wireless LAN.exe" /rl HIGHEST /f
      2⤵
      • Creates scheduled task(s)
      PID:3156
    • C:\Users\Admin\AppData\Roaming\SubDir\Windows Wireless LAN.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Windows Wireless LAN.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4556
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Windows Wireless LAN" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Windows Wireless LAN.exe" /rl HIGHEST /f
        3⤵
        • Creates scheduled task(s)
        PID:3984
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://only-fans.uk/asdd
        3⤵
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2988
        • 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,0x100,0x104,0xd8,0x108,0x7ffb64a946f8,0x7ffb64a94708,0x7ffb64a94718
          4⤵
            PID:2296
          • 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=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2228 /prefetch:3
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:3892
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2192 /prefetch:2
            4⤵
              PID:2084
            • 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=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2928 /prefetch:8
              4⤵
                PID:3612
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=3372 /prefetch:1
                4⤵
                  PID:3888
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=3356 /prefetch:1
                  4⤵
                    PID:3244
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=5008 /prefetch:1
                    4⤵
                      PID:1796
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3368 /prefetch:1
                      4⤵
                        PID:4944
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=5316 /prefetch:1
                        4⤵
                          PID:4824
                        • 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=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5588 /prefetch:8
                          4⤵
                            PID:4572
                          • 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=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5588 /prefetch:8
                            4⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:5060
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5652 /prefetch:1
                            4⤵
                              PID:4828
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=5632 /prefetch:1
                              4⤵
                                PID:924
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5344 /prefetch:1
                                4⤵
                                  PID:4608
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=6112 /prefetch:1
                                  4⤵
                                    PID:3176
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=5928 /prefetch:1
                                    4⤵
                                      PID:4100
                                    • 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=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --service-sandbox-type=audio --mojo-platform-channel-handle=3368 /prefetch:8
                                      4⤵
                                        PID:2572
                                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --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=3624 /prefetch:1
                                        4⤵
                                          PID:1904
                                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=19 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6372 /prefetch:1
                                          4⤵
                                            PID:1412
                                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=18 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5656 /prefetch:1
                                            4⤵
                                              PID:2316
                                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2184,4529747897996419559,7784230847024463362,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2736 /prefetch:2
                                              4⤵
                                              • Suspicious behavior: EnumeratesProcesses
                                              PID:4008
                                      • C:\Windows\System32\CompPkgSrv.exe
                                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                                        1⤵
                                          PID:1636
                                        • C:\Windows\System32\CompPkgSrv.exe
                                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                                          1⤵
                                            PID:320
                                          • C:\Windows\system32\AUDIODG.EXE
                                            C:\Windows\system32\AUDIODG.EXE 0x328 0x324
                                            1⤵
                                            • Suspicious use of AdjustPrivilegeToken
                                            PID:4188

                                          Network

                                                MITRE ATT&CK Enterprise v15

                                                Replay Monitor

                                                Loading Replay Monitor...

                                                Downloads

                                                settings.dat

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                                • Size 152B
                                                • SHA256 67ee813be3c6598a8ea02cd5bb5453fc0aa114606e3fc7ad216f205fe46dfc13
                                                • MD5 SHA1 SHA512

                                                settings.dat

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                                • Size 152B
                                                • SHA256 76e1645d9c4f363b34e554822cfe0d53ff1fce5e994acdf1edeff13ae8df30f8
                                                • MD5 SHA1 SHA512

                                                f_000002

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Cache\f_000002
                                                • Size 719KB
                                                • SHA256 cb8363a3971762ebb8bda85f56f8babbf0b91c1ee0743eea6e0527259dbdf07d
                                                • MD5 SHA1 SHA512 SSDEEP

                                                the-real-index

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index
                                                • Size 312B
                                                • SHA256 3572f86072ad3e9cb8ee4ec88fad2d50e1882a3287282d5791e2b0b685cfb8d6
                                                • MD5 SHA1 SHA512

                                                Network Persistent State

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                                • Size 2KB
                                                • SHA256 70c52f2fcb23ded20bebba85effce533946cac36cf8145a8b422d24e7d786ca1
                                                • MD5 SHA1 SHA512

                                                Network Persistent State

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                                • Size 2KB
                                                • SHA256 49d39219aa473fd339c4176619e01feff4e1096eef85744fd5b85bdc77459a0c
                                                • MD5 SHA1 SHA512

                                                Preferences

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                • Size 6KB
                                                • SHA256 14ab65057e18115f7ee1fe61ca671fcdcf761be717d9e6540bb0d2a398ee6443
                                                • MD5 SHA1 SHA512 SSDEEP

                                                Preferences

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                • Size 7KB
                                                • SHA256 34d5c78d6547f7a808821447429013e2b7c136ee7b920ada37d07adea31c1cc6
                                                • MD5 SHA1 SHA512 SSDEEP

                                                CURRENT

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                                • Size 16B
                                                • SHA256 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
                                                • MD5 SHA1 SHA512

                                                Local State

                                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                                • Size 11KB
                                                • SHA256 0c07495b0e7dfe700fcff7993936bbf84e7982c868adefa118f7f02a0ccd214d
                                                • MD5 SHA1 SHA512 SSDEEP

                                                Windows Wireless LAN.exe

                                                • Path C:\Users\Admin\AppData\Roaming\SubDir\Windows Wireless LAN.exe
                                                • Size 3.1MB
                                                • SHA256 6ff8492e3fd3b5ae51727614dbf4a4253028128764191972b78fb0fd3f1edb95
                                                • MD5 SHA1 SHA512 SSDEEP

                                                Windows Wireless LAN.exe

                                                • Path C:\Users\Admin\AppData\Roaming\SubDir\Windows Wireless LAN.exe
                                                • Size 3.1MB
                                                • SHA256 7ed672be4c63c1e9c726843a76a8ba96af26c242742b9feb69e51ac3b681cf6f
                                                • MD5 SHA1 SHA512 SSDEEP

                                                memory/4164-0-0x00000000004D0000-0x00000000007F4000-memory.dmp

                                                memory/4164-10-0x00007FFB6A180000-0x00007FFB6AC41000-memory.dmp

                                                memory/4164-2-0x000000001B450000-0x000000001B460000-memory.dmp

                                                memory/4164-1-0x00007FFB6A180000-0x00007FFB6AC41000-memory.dmp

                                                memory/4556-9-0x00007FFB6A180000-0x00007FFB6AC41000-memory.dmp

                                                memory/4556-18-0x00007FFB6A180000-0x00007FFB6AC41000-memory.dmp

                                                memory/4556-16-0x000000001C8C0000-0x000000001C9C2000-memory.dmp

                                                memory/4556-15-0x000000001C340000-0x000000001C37C000-memory.dmp

                                                memory/4556-14-0x000000001C280000-0x000000001C292000-memory.dmp

                                                memory/4556-13-0x000000001C3C0000-0x000000001C472000-memory.dmp

                                                memory/4556-12-0x000000001C2B0000-0x000000001C300000-memory.dmp

                                                memory/4556-11-0x000000001B850000-0x000000001B860000-memory.dmp