4a8361ecf46d3d03e8c0b5a2f36c68ffb4d1fa91d5f7dd656b0adc32cee0ad1c

General

Target
4a8361ecf46d3d03e8c0b5a2f36c68ffb4d1fa91d5f7dd656b0adc32cee0ad1c.dll
Size 72KB
Sample240406-zpal2abe46
SHA256 4a8361ecf46d3d03e8c0b5a2f36c68ffb4d1fa91d5f7dd656b0adc32cee0ad1c
MD5 f8b0198ff83ebcb67ff487705f855682
SHA1 98a118a2287cb8a35364bfacfe2da517c4180cf3
SHA512 fe0d3d06563c23f33a39211d03709dda939e295ea30ce92e9823d3bb2de3d9f5b503069a22db2ba00206b96f748b2c682b12d4b780b24ad18234c719a485c7bb
SSDEEP 1536:6oy+olBOGbPSGCUOGgWWZtXorr7/hF0ovrW:dy+oS7orRF0ovrW
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7BA4C38C-6BE5-4F3C-980B-CEB48A777413}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7BA4C38C-6BE5-4F3C-980B-CEB48A777413}\NoExplorer = "1"	regsvr32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3508	3220	WerFault.exe	85

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Software\Microsoft\Internet Explorer\SearchScopes	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\DefaultScope = "{20C3857E-3A7A-48FF-8C16-8BAFFDF5EE77}"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{20C3857E-3A7A-48FF-8C16-8BAFFDF5EE77}\DisplayName = "°Ù¶È"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{20C3857E-3A7A-48FF-8C16-8BAFFDF5EE77}\URL = "http://www.baidu.com/s?tn=leizhen_dg&ie=utf-8&wd={searchTerms}"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{20C3857E-3A7A-48FF-8C16-8BAFFDF5EE77}\SuggestionsURL_JSON = "http://suggestion.baidu.com/su?wd={searchTerms}&action=opensearch&ie=utf-8&from=ie8"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Software\Microsoft\Internet Explorer\SearchScopes\{6C08444C-B736-4C01-99A8-4CC9E59A9BC9}	regsvr32.exe
Key deleted	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{0633EE93-D776-472f-A0FF-E1416B8B2E3A}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Software\Microsoft\Internet Explorer\SearchScopes\{20C3857E-3A7A-48FF-8C16-8BAFFDF5EE77}	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{6C08444C-B736-4C01-99A8-4CC9E59A9BC9}\DisplayName = "Google"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{6C08444C-B736-4C01-99A8-4CC9E59A9BC9}\URL = "http://www.gggdu.com/google?q={searchTerms}"	regsvr32.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7BA4C38C-6BE5-4F3C-980B-CEB48A777413}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4a8361ecf46d3d03e8c0b5a2f36c68ffb4d1fa91d5f7dd656b0adc32cee0ad1c.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\Shell	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage\Command	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\DefaultIcon	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7BA4C38C-6BE5-4F3C-980B-CEB48A777413}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7BA4C38C-6BE5-4F3C-980B-CEB48A777413}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\Shell\OpenHomePage\Command	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\Shell\OpenHomePage	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 3220	4432	regsvr32.exe	85
PID 4432 wrote to memory of 3220	4432	regsvr32.exe	85
PID 4432 wrote to memory of 3220	4432	regsvr32.exe	85

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4a8361ecf46d3d03e8c0b5a2f36c68ffb4d1fa91d5f7dd656b0adc32cee0ad1c.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\4a8361ecf46d3d03e8c0b5a2f36c68ffb4d1fa91d5f7dd656b0adc32cee0ad1c.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:3220
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3220 -s 888
    3⤵
    - Program crash
    PID:3508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3220 -ip 3220
1⤵
PID:1284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

1

T1176

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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