hxxps://u2945729[.]ct[.]sendgrid[.]net/wf/open?upn=NmqyWpjeBpYDvAtv15pfFmKkDmUxaZJsf2tp-2FvbkZLDV-2BKuuftihgXXfH3JrfMZ-2FdMsnQYOOLsHJIqfNM6xEVgfytUWlsG2FszcjF4GBUeX5-2B-2Faxswr5SD1QvSAA0lsO7ErhcYRMS1f71Z3LZtS4jZM2aIbheKu1b-2BA36T9jxFuCGWzv5j1yRVjXKTRV-2Bdwq2jbPAv03wL9qxYrVJj3ENIy0X69mPRGDPpzBP1FS4Bg-3D

Analysis

max time kernel
34s
max time network
37s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
04/11/2022, 15:02

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General

Target

https://u2945729.ct.sendgrid.net/wf/open?upn=NmqyWpjeBpYDvAtv15pfFmKkDmUxaZJsf2tp-2FvbkZLDV-2BKuuftihgXXfH3JrfMZ-2FdMsnQYOOLsHJIqfNM6xEVgfytUWlsG2FszcjF4GBUeX5-2B-2Faxswr5SD1QvSAA0lsO7ErhcYRMS1f71Z3LZtS4jZM2aIbheKu1b-2BA36T9jxFuCGWzv5j1yRVjXKTRV-2Bdwq2jbPAv03wL9qxYrVJj3ENIy0X69mPRGDPpzBP1FS4Bg-3D

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2340	2196	WerFault.exe	54

Modifies Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{AAE46CB4-5C51-11ED-A0EE-C2D2A1265889} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 503340815ef0d801	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2139099068"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000043e2eb2e51ccf149ab640c8bdb0d790600000000020000000000106600000001000020000000d9e8e686478aeb351592a449a334d83f57d66352e65b50062f87feb71188000d000000000e800000000200002000000007f20a190dc08be84c75889649d083c7eec34a3ed897238dfd3cc24aa63b886f2000000027389aca40627a52db3eb6462c1ae9352df61e6bacbc408abe3324713fa8daff400000001ebd2d0bc30a9c3213bc666c05e80efdeebd4064966785f3cfd0fe9db89ff042696f36db047b5d309823bb6a915dca3988c50f84a6d2a920093f53143b9f1515	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2149881267"	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "30994526"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2139099068"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30994526"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 704c34815ef0d801	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "30994526"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb0100000043e2eb2e51ccf149ab640c8bdb0d790600000000020000000000106600000001000020000000696827db9ba2542c411211662dfbf096de93edf2c916cc0742a7c942348029e2000000000e8000000002000020000000b22364a4969b4115976247001fbce962c972bcfef0113a58d501941f8e0e49bd20000000ec9c089e56d22936c246d1a7a28d261cd4f4ee734173de5f7c36ac6059918aae40000000351e3e7e15f43660d6e978bbbc1904a24697f102d0084265fbc30688f1ae8811a949aaa200e0b346de4092532673085f762a107f5767fff71d453fe84ee35cef	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4812	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4812	iexplore.exe
4812	iexplore.exe
1452	IEXPLORE.EXE
1452	IEXPLORE.EXE
1452	IEXPLORE.EXE
1452	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4812 wrote to memory of 1452	4812	iexplore.exe	81
PID 4812 wrote to memory of 1452	4812	iexplore.exe	81
PID 4812 wrote to memory of 1452	4812	iexplore.exe	81

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" https://u2945729.ct.sendgrid.net/wf/open?upn=NmqyWpjeBpYDvAtv15pfFmKkDmUxaZJsf2tp-2FvbkZLDV-2BKuuftihgXXfH3JrfMZ-2FdMsnQYOOLsHJIqfNM6xEVgfytUWlsG2FszcjF4GBUeX5-2B-2Faxswr5SD1QvSAA0lsO7ErhcYRMS1f71Z3LZtS4jZM2aIbheKu1b-2BA36T9jxFuCGWzv5j1yRVjXKTRV-2Bdwq2jbPAv03wL9qxYrVJj3ENIy0X69mPRGDPpzBP1FS4Bg-3D
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4812 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1452

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 460 -p 2196 -ip 2196
1⤵
PID:4228

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 2196 -s 840
1⤵
- Program crash
PID:2340

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
471B

MD5
109f1fdc227b792d5a67df7a8d515986

SHA1
9db59dd3995952ec922aa5115d4461e3b2243204

SHA256
7d3f8061950f138c5bb30b865b93662cb133b4b1fdaeb347794ac14ebab14149

SHA512
ea5e4428f59d186d6929712918baa8d643d912633f01679e30e7089de51c5362dbc8f87e8cdb1f04d2176156c4ff2cf2583db95b9aa19073d3cb144f5caed4b4

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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

Filesize
434B

MD5
0b79b2e27e9940511bf0ae4848e03ea1

SHA1
eece291be44122c09e6559117648a81d0a0ccbd2

SHA256
26b12fd18bc83657e1decee203b8ff87a63e66f77ac0335b725ba5e80b68ecf2

SHA512
b7f78897931e9bc51f8e56aadddcbb01e7614af9403b2840e9a0f6670a9c7aeba5b860a316d4d17751dd9f7e03f8b7d2d0049ab1f74846f109609a7aeaff38be

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