hxxp://spamchallenge[.]msftemail[.]com/

Analysis

max time kernel
151s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
02/07/2023, 23:32

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General

Target

http://spamchallenge.msftemail.com/

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 35 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 404d748d3dadd901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2347742468"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31042877"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31042877"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2322429427"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2322429427"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000d53c3f41f06a2044adba6d75851c4759000000000200000000001066000000010000200000001ca203196de81193e0301f92ba7151872c4dc63bc7a4a2e4776eb1a84d2793b2000000000e800000000200002000000053ab856f22997b6cab5122d404f1516d3b3704f1aef7012c3edb23c17ff9b20020000000f6f950ee0d466dc60ba8bdfb8bc6d91611e0274a3949bc419db521345441ef0c40000000c6aa5e9bde0f291e7f0f8136bd504b1c2392b3bee19d7ff77432be0c8535c3a0a221e0398917d80764cc62513b6a89fc5a31587994bd9037077640925d260645	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 70c95e8d3dadd901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "395105727"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31042877"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{B5DD522B-1930-11EE-8DA0-5A11A9B38B8E} = "0"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000d53c3f41f06a2044adba6d75851c475900000000020000000000106600000001000020000000f18cac784f5374d1228f4b8aed05d2c7ff612caa36ac57316160fe4f4ec7904c000000000e8000000002000020000000b4cfdbd55767361f3288bd026c981025f87fe05161543e26e9a86eab17965caf20000000a02fed64ad79aa15dd140a328963753d1b268a0faa2b905581da69d834c6a0b340000000dd403febd0ef561e3191587d255c791132bb65e8a668c608f83fbdd18be3d702c16d023dde8fb3b05c05139030382594d2ac39dbe74f953650804a9441159e01	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-922299981-3641064733-3870770889-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4176	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4176	iexplore.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4176	iexplore.exe
4176	iexplore.exe
2692	IEXPLORE.EXE
2692	IEXPLORE.EXE
2692	IEXPLORE.EXE
2692	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4176 wrote to memory of 2692	4176	iexplore.exe	86
PID 4176 wrote to memory of 2692	4176	iexplore.exe	86
PID 4176 wrote to memory of 2692	4176	iexplore.exe	86

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" http://spamchallenge.msftemail.com/
1⤵
- Modifies Internet Explorer settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4176 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:2692

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
6fe591eda8a5298312a36630f5e00de9

SHA1
e33454cdb04272145c12bc17c9f0edf9aa5e6633

SHA256
6b792fbfd134e94e30d56b9ca265385b70f4665b710868d1f703061a7925a762

SHA512
dee9cb5120a18ae3e9855df3994cdf9d0f93162c659e8d331c766be5e67ea75dd051b7bfa399aca286cfa2a1544feb99e13643c1f4fedf178698111a87f9aed4

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

Filesize
404B

MD5
d4d5a1b32f64291b3487e59578c81ff1

SHA1
ff8b409b5dcf983efc45b03b77f3ae8b818a7dda

SHA256
2edbd68b335a59a8323989f1f289c0e9d9e4714b9d57f7295601a0f50b11a65f

SHA512
b74d83a85bbdd7caa04c4729fadb0874903f01ed4d267bbcf617c6b425bb64bc7102b04b6460fc3b475460c523221926da88c44026ca9d79912f5b06c260d363

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8RG8LESW\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit