Resubmissions

05/12/2024, 20:18

241205-y3mm3szpcx3

05/12/2024, 12:32

241205-pqsh5avkc13

05/12/2024, 12:24

241205-pk96zstrft10

Analysis

  • max time kernel
    93s
  • max time network
    109s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2024, 12:24

General

  • Target
    registry.html
  • Size 1KB
  • Sample241205-pk96zstrft
  • SHA256 3e2e9b64c2701ed6fdd503b5cd52dcda17909a3f9f5f0f6c6b42ef8c9ae23c95
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • JonahOscendoskY-53420.portmap.host:53420

Mutex
  • f38ec230-fd60-44ab-91a9-17577e4487f9

Attributes
  • encryption_key

    E127FB40EABF3C6167749BEDDDBC64167ED27B67

  • install_name

    Registry.exe

  • log_directory

    Logs

  • reconnect_delay

    1000

  • startup_key

    Registry

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 5 IoCs
  • Drops file in System32 directory 3 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 1 IoCs
  • NTFS ADS 2 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: NtCreateUserProcessBlockNonMicrosoftBinary 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 43 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 C:\Users\Admin\AppData\Local\Temp\registry.html
    1⤵
    • Enumerates system info in registry
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:392
    • 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:1040
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2144 /prefetch:2
        2⤵
          PID:3004
        • 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=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2300 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4016
        • 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=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2852 /prefetch:8
          2⤵
            PID:4012
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --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=3288 /prefetch:1
            2⤵
              PID:840
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --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=3396 /prefetch:1
              2⤵
                PID:552
              • 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=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5880 /prefetch:8
                2⤵
                  PID:2168
                • 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=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5880 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2312
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --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=5180 /prefetch:1
                  2⤵
                    PID:4632
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --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=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4772 /prefetch:1
                    2⤵
                      PID:2112
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5768 /prefetch:1
                      2⤵
                        PID:556
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --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=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5140 /prefetch:1
                        2⤵
                          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=2040,7744970146946354105,5558132433281369969,131072 --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=5184 /prefetch:1
                          2⤵
                            PID:2576
                          • 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=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5816 /prefetch:8
                            2⤵
                              PID:4924
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --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=1980 /prefetch:1
                              2⤵
                                PID:4964
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --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=5020 /prefetch:1
                                2⤵
                                  PID:4632
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --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=5212 /prefetch:1
                                  2⤵
                                    PID:3772
                                  • 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=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=5748 /prefetch:8
                                    2⤵
                                      PID:4980
                                    • 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=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --service-sandbox-type=icon_reader --mojo-platform-channel-handle=4992 /prefetch:8
                                      2⤵
                                        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=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2672 /prefetch:8
                                        2⤵
                                        • Suspicious behavior: EnumeratesProcesses
                                        PID:2544
                                      • C:\Users\Admin\Downloads\registry.exe
                                        "C:\Users\Admin\Downloads\registry.exe"
                                        2⤵
                                        • Executes dropped EXE
                                        • Drops file in System32 directory
                                        • Suspicious use of AdjustPrivilegeToken
                                        PID:4980
                                        • C:\Windows\SYSTEM32\schtasks.exe
                                          "schtasks" /create /tn "Registry" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Registry.exe" /rl HIGHEST /f
                                          3⤵
                                          • Scheduled Task/Job: Scheduled Task
                                          PID:4828
                                        • C:\Windows\system32\SubDir\Registry.exe
                                          "C:\Windows\system32\SubDir\Registry.exe"
                                          3⤵
                                          • Executes dropped EXE
                                          • Suspicious use of AdjustPrivilegeToken
                                          • Suspicious use of SetWindowsHookEx
                                          PID:2224
                                          • C:\Windows\SYSTEM32\schtasks.exe
                                            "schtasks" /create /tn "Registry" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Registry.exe" /rl HIGHEST /f
                                            4⤵
                                            • Scheduled Task/Job: Scheduled Task
                                            PID:1808
                                      • C:\Users\Admin\Downloads\registry.exe
                                        "C:\Users\Admin\Downloads\registry.exe"
                                        2⤵
                                        • Executes dropped EXE
                                        • Suspicious use of AdjustPrivilegeToken
                                        PID:4348
                                      • C:\Users\Admin\Downloads\registry.exe
                                        "C:\Users\Admin\Downloads\registry.exe"
                                        2⤵
                                        • Executes dropped EXE
                                        • Suspicious use of AdjustPrivilegeToken
                                        PID:3112
                                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2040,7744970146946354105,5558132433281369969,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=23 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6176 /prefetch:1
                                        2⤵
                                          PID:700
                                      • C:\Windows\System32\CompPkgSrv.exe
                                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                                        1⤵
                                          PID:2880
                                        • C:\Windows\System32\CompPkgSrv.exe
                                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                                          1⤵
                                            PID:4768
                                          • C:\Windows\System32\rundll32.exe
                                            C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                            1⤵
                                              PID:428
                                            • C:\Users\Admin\Downloads\registry.exe
                                              "C:\Users\Admin\Downloads\registry.exe"
                                              1⤵
                                              • Executes dropped EXE
                                              • Suspicious use of AdjustPrivilegeToken
                                              PID:1168

                                            Network

                                                  MITRE ATT&CK Enterprise v15

                                                  Replay Monitor

                                                  Loading Replay Monitor...

                                                  Downloads

                                                  Registry.exe.log

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Registry.exe.log
                                                  • Size 1KB
                                                  • SHA256 ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
                                                  • MD5 SHA1 SHA512

                                                  settings.dat

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                                  • Size 152B
                                                  • SHA256 378701e87dcff90aa092702bc299859d6ae8f7e313f773bf594f81df6f40bf6a
                                                  • MD5 SHA1 SHA512

                                                  settings.dat

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                                  • Size 152B
                                                  • SHA256 c0745fd195f3a51b27e4d35a626378a62935dccebefb94db404166befd68b2be
                                                  • MD5 SHA1 SHA512

                                                  Network Persistent State

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State
                                                  • Size 676B
                                                  • SHA256 4ef1b834c948f1deabe92a7e3a1522af35f95c12db3cd863c95981170c5cdd68
                                                  • MD5 SHA1 SHA512

                                                  Preferences

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                  • Size 6KB
                                                  • SHA256 74c9e5bec7e2804c4506624e2eda137a6f077670e805d6b803c929493af49ffb
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  Preferences

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                  • Size 6KB
                                                  • SHA256 c3734c9f75bce269ea9c9e194a49ffa20a7b4c2e280e4bc97870972fc03a50cf
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  Preferences

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                  • Size 6KB
                                                  • SHA256 39dfe465613db3f643aeb15455d69d02a097e9d46b5d22ffddb83dc611483670
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  Preferences

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                  • Size 5KB
                                                  • SHA256 478b6aa35a9de8bfd8cd5185a874d02b48f8600d6a0295d6a154e253a3175693
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  Preferences

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                  • Size 6KB
                                                  • SHA256 bf7d5109cec17dc117be818d9eab30ad5d793cd72992a7ab93494f77b04ef100
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  TransportSecurity

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\TransportSecurity
                                                  • Size 370B
                                                  • SHA256 16d3765a9c028f6a78fc7a11016ade94893aa58cc82dc7250a34bae2b7a75aac
                                                  • MD5 SHA1 SHA512

                                                  TransportSecurity~RFe583294.TMP

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\TransportSecurity~RFe583294.TMP
                                                  • Size 203B
                                                  • SHA256 db71cee11bdc3c65fb90ca31536f31db22c7d17da1815e15ee2d1948e100fde5
                                                  • MD5 SHA1 SHA512

                                                  CURRENT

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                                  • Size 16B
                                                  • SHA256 1005a525006f148c86efcbfb36c6eac091b311532448010f70f7de9a68007167
                                                  • MD5 SHA1 SHA512

                                                  CURRENT

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                                  • Size 16B
                                                  • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
                                                  • MD5 SHA1 SHA512

                                                  Local State

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                                  • Size 10KB
                                                  • SHA256 36332dacab5e45866021690c3ce9c257610618e65836ccf0b4a97e3e91e16a3e
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  Local State

                                                  • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                                  • Size 10KB
                                                  • SHA256 76459f0fd29c3973e7273da054b46e6c5a2cd1b92072f6258f13cbf62c371f1e
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  Unconfirmed 347977.crdownload

                                                  • Path C:\Users\Admin\Downloads\Unconfirmed 347977.crdownload
                                                  • Size 3.1MB
                                                  • SHA256 d888126c2f1e9639469e7038e4ab840a52c7bcdcedbceac7a55e14e391d01cbd
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  memory/2224-156-0x000000001BC20000-0x000000001BC70000-memory.dmp

                                                  memory/2224-157-0x000000001BD30000-0x000000001BDE2000-memory.dmp

                                                  memory/2224-160-0x000000001BC70000-0x000000001BC82000-memory.dmp

                                                  memory/2224-161-0x000000001BCD0000-0x000000001BD0C000-memory.dmp

                                                  memory/4980-146-0x00000000001C0000-0x00000000004E4000-memory.dmp