Analysis
-
max time kernel
141s -
max time network
147s -
platform
windows10_x64 -
resource
win10 -
submitted
22-09-2020 20:00
Static task
static1
Behavioral task
behavioral1
Sample
https://u5508193.ct.sendgrid.net/ls/click?upn=ixhKURVLJcbA2tXqdftGSsfCM-2BwOmFzlt0eOoM0NyeBq9-2Bmygo7PXP8-2BaWKIUh6Cq4NZP4qLo3ujJpOJ7iVe-2FwpJHh8SIyJ1jBsZJI1vZ-2BBeafgp-2BomH4XvQTk-2FHNfrDzjpwO7rxctOq3nXdPlRGjiz94uPtPo7ih2TCloEzpJ695k2vE0YYfCFr5QshmympGnb1_si52RC6zvqCZnXAviXfkiwxbn-2FVUQeKoGXbWkXzjPY3YBJjTaH6WP0O0ZO9yjN-2BW9AsLdN4WaoyFzAJ7Gi1xHKtRRj9yW-2B9HmcdjbFcoDelmqSL-2FyrIuftSknPUBBnziM0nrzwWpaeMCrFIYvBb-2Bh6M9VG4b3aF-2Bp4BEDDNO197sXPlMUCU3x2xaFr3feukJh-2FWfCR0F9qVU6s90aScvrQ-3D-3D
Resource
win10
General
-
Target
https://u5508193.ct.sendgrid.net/ls/click?upn=ixhKURVLJcbA2tXqdftGSsfCM-2BwOmFzlt0eOoM0NyeBq9-2Bmygo7PXP8-2BaWKIUh6Cq4NZP4qLo3ujJpOJ7iVe-2FwpJHh8SIyJ1jBsZJI1vZ-2BBeafgp-2BomH4XvQTk-2FHNfrDzjpwO7rxctOq3nXdPlRGjiz94uPtPo7ih2TCloEzpJ695k2vE0YYfCFr5QshmympGnb1_si52RC6zvqCZnXAviXfkiwxbn-2FVUQeKoGXbWkXzjPY3YBJjTaH6WP0O0ZO9yjN-2BW9AsLdN4WaoyFzAJ7Gi1xHKtRRj9yW-2B9HmcdjbFcoDelmqSL-2FyrIuftSknPUBBnziM0nrzwWpaeMCrFIYvBb-2Bh6M9VG4b3aF-2Bp4BEDDNO197sXPlMUCU3x2xaFr3feukJh-2FWfCR0F9qVU6s90aScvrQ-3D-3D
Malware Config
Extracted
buer
https://104.248.83.13/
Signatures
-
Buer Loader 2 IoCs
Detects Buer loader in memory or disk.
resource yara_rule behavioral1/memory/3728-16-0x00000000005A0000-0x00000000005AF000-memory.dmp buer behavioral1/memory/3728-17-0x0000000040000000-0x000000004000C000-memory.dmp buer -
Executes dropped EXE 1 IoCs
pid Process 3728 Review.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\E: Review.exe File opened (read-only) \??\I: Review.exe File opened (read-only) \??\K: Review.exe File opened (read-only) \??\M: Review.exe File opened (read-only) \??\J: Review.exe File opened (read-only) \??\R: Review.exe File opened (read-only) \??\V: Review.exe File opened (read-only) \??\W: Review.exe File opened (read-only) \??\Z: Review.exe File opened (read-only) \??\Y: Review.exe File opened (read-only) \??\F: Review.exe File opened (read-only) \??\H: Review.exe File opened (read-only) \??\P: Review.exe File opened (read-only) \??\Q: Review.exe File opened (read-only) \??\S: Review.exe File opened (read-only) \??\T: Review.exe File opened (read-only) \??\X: Review.exe File opened (read-only) \??\A: Review.exe File opened (read-only) \??\B: Review.exe File opened (read-only) \??\G: Review.exe File opened (read-only) \??\L: Review.exe File opened (read-only) \??\N: Review.exe File opened (read-only) \??\O: Review.exe File opened (read-only) \??\U: Review.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
-
Modifies Internet Explorer Phishing Filter 1 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\PhishingFilter iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\PhishingFilter\ClientSupported_MigrationTime = b4679a610d44d601 iexplore.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 30a28da71b91d601 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$http://www.typepad.com/ iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\DomainSuggestion iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0" iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running" IEXPLORE.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$Discuz! iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30839067" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$vBulletin 3 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\FileVersion = "2016061511" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\RepId iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3068423837" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\NextUpdateDate = "307618628" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$MediaWiki iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{D13C5761-FD0E-11EA-95F0-46C5BBD542B6} = "0" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000f2516ad93492e447b653df084581feb600000000020000000000106600000001000020000000598be04465618fb864e39ebbfdb7da27f3132fb14a8e5480eb0780e7caf5910f000000000e80000000020000200000001b5ced1007d7ae39d5c7efb19f40ce9977dd4dfc495a05bdd812b9d8f0eedde0200000000fc85835a98204403ceeabb8b24ec96a9009e3fc456a6837746d993847e9584b40000000d84f79b7bd4fef6a109b68ecfff74963a50dcc5e46ec4a1deacfe3d4963144d1c83c08470cb3fca5a749b92a1346a4f851c2ccbbcf90dbb457a2b8a363aea868 iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000 iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\HistoryJournalCertificate\NextUpdateDate = "307586636" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$blogger iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\ iexplore.exe Set value (str) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\RepId\PublicId = "{5E338167-0548-465F-AA86-F12F01DCDD3C}" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 106b9ea71b91d601 iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30839067" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30839067" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\HistoryJournalCertificate iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30839067" IEXPLORE.EXE Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "307570042" iexplore.exe Key created \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\Main iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2785467644" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50" iexplore.exe Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2794210407" IEXPLORE.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2785467644" iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000f2516ad93492e447b653df084581feb60000000002000000000010660000000100002000000000d19b4cfd95822299b27892b14c9ab1aa6464e99e160b17b233610cf529c7eb000000000e8000000002000020000000a61893430a8c69685270872672073481b167420e127627a01c1be732cd9ef8ff20000000ca86b36c10aee5530fc44f0b9895e75778542d834aac868ecd41917cced52f4a400000005434608a45ec5d3efa64eb899ee285636d88d198fb243cd1b4f2d6dbbb5c2de748c07a7b0c0ec58259ae111852e20e354ddceeb2acd97da9c3d729f243ac6f84 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$Telligent iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$vBulletin 4 iexplore.exe Set value (data) \REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Internet Explorer\FlipAhead\Meta\generator$WordPress iexplore.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2532 iexplore.exe 2532 iexplore.exe 3792 powershell.exe 3792 powershell.exe 3792 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3792 powershell.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2532 iexplore.exe 2532 iexplore.exe -
Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 2532 iexplore.exe 2532 iexplore.exe 736 IEXPLORE.EXE 736 IEXPLORE.EXE 736 IEXPLORE.EXE 736 IEXPLORE.EXE 2800 IEXPLORE.EXE 2800 IEXPLORE.EXE 2800 IEXPLORE.EXE 2800 IEXPLORE.EXE -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2532 wrote to memory of 736 2532 iexplore.exe 72 PID 2532 wrote to memory of 736 2532 iexplore.exe 72 PID 2532 wrote to memory of 736 2532 iexplore.exe 72 PID 2532 wrote to memory of 2800 2532 iexplore.exe 77 PID 2532 wrote to memory of 2800 2532 iexplore.exe 77 PID 2532 wrote to memory of 2800 2532 iexplore.exe 77 PID 2532 wrote to memory of 3728 2532 iexplore.exe 78 PID 2532 wrote to memory of 3728 2532 iexplore.exe 78 PID 2532 wrote to memory of 3728 2532 iexplore.exe 78 PID 3728 wrote to memory of 3792 3728 Review.exe 80 PID 3728 wrote to memory of 3792 3728 Review.exe 80 PID 3728 wrote to memory of 3792 3728 Review.exe 80
Processes
-
C:\Program Files\Internet Explorer\iexplore.exe"C:\Program Files\Internet Explorer\iexplore.exe" https://u5508193.ct.sendgrid.net/ls/click?upn=ixhKURVLJcbA2tXqdftGSsfCM-2BwOmFzlt0eOoM0NyeBq9-2Bmygo7PXP8-2BaWKIUh6Cq4NZP4qLo3ujJpOJ7iVe-2FwpJHh8SIyJ1jBsZJI1vZ-2BBeafgp-2BomH4XvQTk-2FHNfrDzjpwO7rxctOq3nXdPlRGjiz94uPtPo7ih2TCloEzpJ695k2vE0YYfCFr5QshmympGnb1_si52RC6zvqCZnXAviXfkiwxbn-2FVUQeKoGXbWkXzjPY3YBJjTaH6WP0O0ZO9yjN-2BW9AsLdN4WaoyFzAJ7Gi1xHKtRRj9yW-2B9HmcdjbFcoDelmqSL-2FyrIuftSknPUBBnziM0nrzwWpaeMCrFIYvBb-2Bh6M9VG4b3aF-2Bp4BEDDNO197sXPlMUCU3x2xaFr3feukJh-2FWfCR0F9qVU6s90aScvrQ-3D-3D1⤵
- Modifies Internet Explorer Phishing Filter
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2532 -
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2532 CREDAT:82945 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:736
-
-
C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE"C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2532 CREDAT:148483 /prefetch:22⤵
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:2800
-
-
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\7ITI1NQU\Review.exe"C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\7ITI1NQU\Review.exe"2⤵
- Executes dropped EXE
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:3728 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\95554a6167c81fe2b28b}"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3792
-
-