Analysis

  • max time kernel
    46s
  • max time network
    48s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-05-2024 17:30

Errors

Reason
Machine shutdown

General

  • Target

    https://gofile.io/d/ZkLIUG

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Windows Update

C2

skbidiooiilet-31205.portmap.host:31205

Mutex

7357b58d-e5d4-42be-8b74-db6eee6cde6d

Attributes
  • encryption_key

    6F721445F7E0B1CF58980D84A9D49F4458D4EFD9

  • install_name

    Update.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    WindowsUpdate

  • subdirectory

    Windows Update

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 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
  • Modifies data under HKEY_USERS 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of FindShellTrayWindow 52 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" --single-argument https://gofile.io/d/ZkLIUG
    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:232
    • 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,0x100,0x104,0xd8,0x108,0x7ff810c046f8,0x7ff810c04708,0x7ff810c04718
      2⤵
        PID:264
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2104,16679129998515390559,11465983527031320686,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2112 /prefetch:2
        2⤵
          PID:4932
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2104,16679129998515390559,11465983527031320686,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2168 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4524
        • 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=2104,16679129998515390559,11465983527031320686,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2908 /prefetch:8
          2⤵
            PID:2436
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,16679129998515390559,11465983527031320686,131072 --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:4672
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,16679129998515390559,11465983527031320686,131072 --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=3380 /prefetch:1
              2⤵
                PID:868
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,16679129998515390559,11465983527031320686,131072 --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=4636 /prefetch:1
                2⤵
                  PID:1416
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,16679129998515390559,11465983527031320686,131072 --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=4896 /prefetch:1
                  2⤵
                    PID:2732
                  • 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=2104,16679129998515390559,11465983527031320686,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4648 /prefetch:8
                    2⤵
                      PID:1500
                    • 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=2104,16679129998515390559,11465983527031320686,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=4648 /prefetch:8
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2304
                    • 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=2104,16679129998515390559,11465983527031320686,131072 --lang=en-US --service-sandbox-type=collections --mojo-platform-channel-handle=5248 /prefetch:8
                      2⤵
                        PID:2784
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,16679129998515390559,11465983527031320686,131072 --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=4748 /prefetch:1
                        2⤵
                          PID:1712
                        • 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=2104,16679129998515390559,11465983527031320686,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3532 /prefetch:8
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:4900
                      • C:\Windows\System32\CompPkgSrv.exe
                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                        1⤵
                          PID:3716
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:3896
                          • C:\Windows\System32\rundll32.exe
                            C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                            1⤵
                              PID:1980
                            • C:\Program Files\7-Zip\7zG.exe
                              "C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Downloads\SynapseX.revamaped.V1.2\" -spe -an -ai#7zMap31860:108:7zEvent22938
                              1⤵
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of FindShellTrayWindow
                              PID:2244
                            • C:\Users\Admin\Downloads\SynapseX.revamaped.V1.2\SynapseX revamaped V1.2\Synapse X Launcher.exe
                              "C:\Users\Admin\Downloads\SynapseX.revamaped.V1.2\SynapseX revamaped V1.2\Synapse X Launcher.exe"
                              1⤵
                              • Executes dropped EXE
                              • Suspicious use of AdjustPrivilegeToken
                              PID:1916
                              • C:\Windows\SYSTEM32\schtasks.exe
                                "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe" /rl HIGHEST /f
                                2⤵
                                • Creates scheduled task(s)
                                PID:1540
                              • C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe
                                "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe"
                                2⤵
                                • Checks computer location settings
                                • Executes dropped EXE
                                • Suspicious use of AdjustPrivilegeToken
                                PID:5152
                                • C:\Windows\SYSTEM32\schtasks.exe
                                  "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe" /rl HIGHEST /f
                                  3⤵
                                  • Creates scheduled task(s)
                                  PID:5196
                                • C:\Windows\System32\shutdown.exe
                                  "C:\Windows\System32\shutdown.exe" /s /t 0
                                  3⤵
                                  • Suspicious use of AdjustPrivilegeToken
                                  PID:5452
                            • C:\Windows\system32\LogonUI.exe
                              "LogonUI.exe" /flags:0x4 /state0:0xa3972055 /state1:0x41c64e6d
                              1⤵
                              • Modifies data under HKEY_USERS
                              • Suspicious use of SetWindowsHookEx
                              PID:5516

                            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

                              a8e767fd33edd97d306efb6905f93252

                              SHA1

                              a6f80ace2b57599f64b0ae3c7381f34e9456f9d3

                              SHA256

                              c8077a9fc79e2691ef321d556c4ce9933ca0570f2bbaa32fa32999dfd5f908bb

                              SHA512

                              07b748582fe222795bce74919aa06e9a09025c14493edb6f3b1f112d9a97ac2225fe0904cac9adf2a62c98c42f7877076e409803014f0afd395f4cc8be207241

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

                              Filesize

                              152B

                              MD5

                              439b5e04ca18c7fb02cf406e6eb24167

                              SHA1

                              e0c5bb6216903934726e3570b7d63295b9d28987

                              SHA256

                              247d0658695a1eb44924a32363906e37e9864ba742fe35362a71f3a520ad2654

                              SHA512

                              d0241e397060eebd4535197de4f1ae925aa88ae413a3a9ded6e856b356c4324dfd45dddfef9a536f04e4a258e8fe5dc1586d92d1d56b649f75ded8eddeb1f3e2

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

                              Filesize

                              288B

                              MD5

                              25eff9514929f0aed11ccf2f7e49b659

                              SHA1

                              818670c5b675befb093c704c680e1bc41c4286ab

                              SHA256

                              6cc1e23b678f73ae2dbd24487f78f6692006c1a6582c96c626190ee2bfa306bb

                              SHA512

                              0879019d9a2e6d106a878aef5f644149cad4fd3a961c1a8af10683d78c5a0a1810d6fdd3fb1068c892924ffd996d03061d2ac9bbb330bdf23d090d38a926987e

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

                              Filesize

                              5KB

                              MD5

                              4e1c7f3665b4538676ad15073056ea68

                              SHA1

                              b8650f97b89db17e37f113ec9d39635a389b18b8

                              SHA256

                              fcd4fcde8ebe5e25ecf2b791b13a8a231ce876d3250bf59cc359e9fcb3cfde28

                              SHA512

                              d046ebce9faa295db26f32c66be5229df1176e99ef81fd65cfbb6f91d42f8cf84d69f0fed5dd1d762f9770a8628cee7bd41c7bc6e293f55df671dcd40f063da2

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

                              Filesize

                              6KB

                              MD5

                              e14f40f9b5cd0ea6cc14c40920cc3b81

                              SHA1

                              fb0e426c5bae896f14829ec8f14a9ec4251fa62f

                              SHA256

                              2ce5e2354177c93e798d2c237e560537476b3733915bc87b35bc4ee63f919b01

                              SHA512

                              62a663a407007fdbf346fab11ff70ec577939a0c4cb6138dafae00c23f3069c59cd10ef72acca617226c7a46c6f4d4789d296e318f011b85939ec57b16f400b8

                            • 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

                              0be7c3ba55d20f80e0269ee12e638b63

                              SHA1

                              ed1e64857c7eb26898aaef0b4a8953ecc0eb02e3

                              SHA256

                              95b0197944c14a46970583fa96f4d56a99122cf34306b5e632217317336f6b7b

                              SHA512

                              707cb37fb8fc3e851972e55b489293f7ea986eea083d7c692c1fa16d1538c6d1672d7ddb634ec1662ebb1d7998210ef2ae6bc5f923a259856b54e31060be0188

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

                              Filesize

                              11KB

                              MD5

                              276819c224876cda687d2aef75bcca14

                              SHA1

                              e46b87c2c8d39855ce7d89db4bafdfd90d6f2def

                              SHA256

                              71b2276bb9b5d9bd35a484001740f7e665be2faf52dca6d393b91ac425b81b46

                              SHA512

                              8de6f169cfa69c9e349d960d640c03fa6967ec3cc6febd1e73517acd4435c859b519dae7d36db18fece2f05c0a7b69cc118d66fb7641b44b8d6fc0c3ddb34650

                            • C:\Users\Admin\Downloads\SynapseX.revamaped.V1.2\SynapseX revamaped V1.2\Synapse X Launcher.exe

                              Filesize

                              3.1MB

                              MD5

                              1a1fda92143e414b4d4153ab05dd1ce8

                              SHA1

                              33ac2b2d228a1ec93b0ea70ffadb436933b9a1e5

                              SHA256

                              f0160a1f7a39862e14063ac468957559656405f51d97ad56dc7cff9ad34da9f1

                              SHA512

                              70a9a6948f98f3bdc2c7b461634098347bdf683dec36fa92bd1ac652f72daf7fa01f842cbb8331f26c9c5f76907604f75f7c45b746bcfe8f395b3864f998f391

                            • \??\pipe\LOCAL\crashpad_232_CTYLUDFHQWOBLBWY

                              MD5

                              d41d8cd98f00b204e9800998ecf8427e

                              SHA1

                              da39a3ee5e6b4b0d3255bfef95601890afd80709

                              SHA256

                              e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                              SHA512

                              cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

                            • memory/1916-150-0x00000000005F0000-0x0000000000914000-memory.dmp

                              Filesize

                              3.1MB

                            • memory/5152-157-0x000000001BC70000-0x000000001BCC0000-memory.dmp

                              Filesize

                              320KB

                            • memory/5152-158-0x000000001BD80000-0x000000001BE32000-memory.dmp

                              Filesize

                              712KB

                            • memory/5152-161-0x000000001BD00000-0x000000001BD12000-memory.dmp

                              Filesize

                              72KB

                            • memory/5152-162-0x000000001C580000-0x000000001C5BC000-memory.dmp

                              Filesize

                              240KB