hxxp://www[.]yahoo[.]com[.]hk

Analysis

max time kernel
53s
max time network
54s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
20-03-2023 06:29

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General

Target

http://www.yahoo.com.hk

Score

1^/10

Malware Config

Signatures

Modifies Internet Explorer settings 1 TTPs 50 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\yahoo.com\Total = "190"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "3885030747"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\DOMStorage\yahoo.com	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\yahoo.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\hk.yahoo.com\ = "8"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\DOMStorage\Total	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "8"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3885030747"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "3898085907"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\IESettingSync	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31021821"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31021821"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\hk.yahoo.com\ = "190"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{12964132-C6F1-11ED-ABF7-42C2EBB090FB} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\DOMStorage\hk.yahoo.com	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "0"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000675316f82fdac74aa8f3bd7995064a9700000000020000000000106600000001000020000000f17372f3844756211a92bc853d732a191fb6033a08bd00c045dc76f2caba6ebc000000000e800000000200002000000090723f240c3d21298bc07615fc26f13f0458d017fc849e0534be8c4313921544200000007940f51572cc568e89db9190e9e93038fbbeaed8286ef19d2a86236cdb44bbf9400000002aeb3fa243f8d333a9d9d18cfc1de6621ba7641d40351cc3cb7f5347033b1fde90d6d99709aebc4d3c8cbffb8e51a0fc6c3c878ee4cf3875ce7d02ce64ab3365	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 500b0bedfd5ad901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\yahoo.com\Total = "8"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\hk.yahoo.com\ = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "190"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000675316f82fdac74aa8f3bd7995064a970000000002000000000010660000000100002000000099baf7fb0e263039410287a8086e1c288fb039af198de22f76ed935901c1c000000000000e80000000020000200000003301c54af873f6837cac0d576d16ed4c1b5a43fc56f5f53e4c78bd486671b983200000000faed2f3b4e0a1e80400be514e3bdba95a57b6d3e4201a3b76052f1bb1f3eafd400000007f2455dbd5115b21b95b27104a5e150eee046854d0eb4faaf32f9762afb774c1ccf9d682e72d14972785ea604cc05a911b2de6b8e67e060e248149f5194fc84b	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\yahoo.com\NumberOfSubdomains = "1"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\yahoo.com\Total = "0"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\Total\ = "204"	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = a00318edfd5ad901	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31021821"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\hk.yahoo.com\ = "204"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\DOMStorage\yahoo.com\Total = "204"	IEXPLORE.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-1529757233-3489015626-3409890339-1000\{769CC6BA-3F9F-46BA-AC0B-1D2105AC00DC}	IEXPLORE.EXE

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4540	IEXPLORE.EXE
Token: SeCreatePagefilePrivilege	4540	IEXPLORE.EXE
Token: SeShutdownPrivilege	4540	IEXPLORE.EXE
Token: SeCreatePagefilePrivilege	4540	IEXPLORE.EXE
Token: 33	1476	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1476	AUDIODG.EXE
Token: SeShutdownPrivilege	4540	IEXPLORE.EXE
Token: SeCreatePagefilePrivilege	4540	IEXPLORE.EXE
Token: SeShutdownPrivilege	4540	IEXPLORE.EXE
Token: SeCreatePagefilePrivilege	4540	IEXPLORE.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3788	iexplore.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
3788	iexplore.exe
3788	iexplore.exe
4540	IEXPLORE.EXE
4540	IEXPLORE.EXE
4540	IEXPLORE.EXE
4540	IEXPLORE.EXE
4540	IEXPLORE.EXE
4540	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3788 wrote to memory of 4540	3788	iexplore.exe	81
PID 3788 wrote to memory of 4540	3788	iexplore.exe	81
PID 3788 wrote to memory of 4540	3788	iexplore.exe	81

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" http://www.yahoo.com.hk
1⤵
- Modifies Internet Explorer settings
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3788
- C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
  "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3788 CREDAT:17410 /prefetch:2
  2⤵
  - Modifies Internet Explorer settings
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4540

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x51c 0x510
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1476

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\Local\Microsoft\Internet Explorer\imagestore\dcpq11e\imagestore.dat

Filesize
2KB

MD5
41f5e671267b48078551915d3b858322

SHA1
0ee4971584d5ca6b7bcab506326bcb305545dd9b

SHA256
de57b5c8fc7eb5012b0f57a9932a3630e5aeb167ea2e84417d0d23671411aa04

SHA512
2db1cb96774afc321121fc45b84ff265e032f4a8fe70858facf42a341464e30c8d0f12219d946a9b5e7fd8e7d75ef1ee0b3f700ba17b669ea9d9d30fcd9bbfd5

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\5AN3FZ97\favicon[2].ico

Filesize
2KB

MD5
3a07174943f82046370997254100d870

SHA1
ecb1e2e89af0ec6f45f875c22df0fbd45821ba80

SHA256
c6f7ee2cadae2e121342a8c4245141175bfe887776206deb17149d46cf3aa827

SHA512
0a589e20251f62f02c4b96b916fbd9359677a26379d46eeef4e455464643de0c9aeef921ad563d970e7436805dd18ae974de6942dfdf0c65089512d8a3b2fd35

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\LZ0AI98S\favicon_y19_32x32_custom[1].svg

Filesize
1KB

MD5
d216d3b4e5a67f022fa3ef4e71781439

SHA1
5e6b829187dcd592b6c4f4998f513b6b77fc9d18

SHA256
54352cc37fafe590444bc57be54170a6ccb8a8eeb30a618911995780faa8462e

SHA512
5878820fe8632627043fd2fdcbb65f3cb614b06a786dbf719a80165187a804d5d23a74bd8e312073ed292c07dca4d42a39d346d35d9c0b49362aa036d9e7b413

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\LZ0AI98S\pixel[1].gif

Filesize
42B

MD5
d89746888da2d9510b64a9f031eaecd5

SHA1
d5fceb6532643d0d84ffe09c40c481ecdf59e15a

SHA256
ef1955ae757c8b966c83248350331bd3a30f658ced11f387f8ebf05ab3368629

SHA512
d5da26b5d496edb0221df1a4057a8b0285d15592a8f8dc7016a294df37ed335f3fde6a2252962e0df38b62847f8b771463a0124ef3f84299f262ed9d9d3cee4c

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C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\LZ0AI98S\rapidworker_1_2_0.0.42[1].js

Filesize
16KB

MD5
789899bb9775c1e7bbefba798011e53c

SHA1
a36b5e64a6ee6286cd015f5b25c4915dc21e914a

SHA256
6ebb5568ed18efb7254b1c8e7d7e0c0cd035ea673190652c4ab788e09a6a1c6b

SHA512
f52c3e6f7ba70a2522706b08832b72edcfee52ba6cf13e7ae029beea7bb8ccf5946eae0272027c1f957fcb6556bfaf46b67f763cbbd9fd41166cbd216fb21f74

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