996e6000cebbcd231bb0ffb7c9dbe528c556d9e0081d38ecae0a6a10d432ce7d

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
28-06-2024 12:46

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General

Target

$PROGRAM_FILES/Baidu/Toolbar/BaiduBarX_Tmp/BaiduBarX.dll
Size

2.6MB
MD5

ba75680a2b710f7d2c575e816000f041
SHA1

a36e8bf8635473494cf58953227b21facdfd2682
SHA256

4c4c9cf71e8eb6f83fe875ad657512f1405648b30472df6597d92a679ee51801
SHA512

4408149541ab4b6eda6c9d6b95995be64773559701a18096c283e503fa3b5b22b624db5956c7916f4cecd80c47036e13b100dd51069ef23292749ef4a89bfbb3
SSDEEP

49152:FzO0nB7oATGdgMlFp6VnvxkSJGsar6KX6n1OGyWdSmuzBG4fi8p4VdsvhwRhXI8u:FzOCdooGdgMlFcVnvxkSJGsar6a61OG8

Score

7^/10

adware stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

BarBroker.exe

pid process

2596 BarBroker.exe
Loads dropped DLL 5 IoCs

Processes:

regsvr32.exe

pid process

268 regsvr32.exe
268 regsvr32.exe
268 regsvr32.exe
268 regsvr32.exe
268 regsvr32.exe

pid	process
2596	BarBroker.exe

pid	process
268	regsvr32.exe
268	regsvr32.exe
268	regsvr32.exe
268	regsvr32.exe
268	regsvr32.exe

Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

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

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

Processes:

regsvr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{77FEF28E-EB96-44FF-B511-3185DEA48697}	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{77FEF28E-EB96-44FF-B511-3185DEA48697}\NoExplorer = "1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{77FEF28E-EB96-44FF-B511-3185DEA48697}\id = "bdbar"	regsvr32.exe

Drops file in Program Files directory 4 IoCs

Processes:

regsvr32.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Baidu\Toolbar\BaiduBarX.dll	regsvr32.exe
File created	C:\Program Files (x86)\Baidu\Toolbar\rc.dll	regsvr32.exe
File created	C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe	regsvr32.exe
File created	C:\Program Files (x86)\Baidu\Toolbar\BaiduBarX.dll	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

Processes:

BarBroker.exeregsvr32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}\AppName = "BarBroker.exe"	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}\AppPath = "%ProgramFiles(x86)%\\Baidu\\Toolbar"	BarBroker.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Low Rights\ElevationPolicy\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}\Policy = "3"	BarBroker.exe
Key created	\REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Internet Explorer\Main	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes"	regsvr32.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Internet Explorer\Toolbar	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Toolbar\{B580CF65-E151-49C3-B73F-70B13FCA8E86} = "12"	regsvr32.exe

Modifies registry class 64 IoCs

Processes:

BarBroker.exeregsvr32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\TypeLib	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\TypeLib\ = "{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\BarBroker.EXE\AppID = "{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}\ = "BarBroker"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool\CurVer\ = "BaiduBar.Tool.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BarBroker.BDBroker.1\CLSID	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand.1\CLSID\ = "{B580CF65-E151-49C3-B73F-70B13FCA8E86}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\VersionIndependentProgID\ = "BarBroker.BDBroker"	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\ = "°Ù¶È¹¤¾ßÀ¸¸¨Öú¶ÔÏó"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\ProgID\ = "BaiduBarX.BandIE.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.5\ = "°Ù¶È¹¤¾ßÀ¸¸öÐÔ»¯Ê×Ò³Ö§³Ö×é¼þ"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.5\CLSID\ = "{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.1\ = "°Ù¶È¹¤¾ßÀ¸¸öÐÔ»¯Ê×Ò³Ö§³Ö×é¼þ"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\VersionIndependentProgID\ = "BaiduBarEx.BDHomePage"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\ = "°Ù¶È¹¤¾ßÀ¸"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage\ = "°Ù¶È¹¤¾ßÀ¸¸öÐÔ»¯Ê×Ò³Ö§³Ö×é¼þ"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BarBroker.BDBroker.1	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\0\win32\ = "C:\\Program Files (x86)\\Baidu\\Toolbar\\BarBroker.exe"	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool\CLSID\ = "{A7F05EE4-0426-454F-8013-C41E3596E9E9}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\HELPDIR\	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib\Version = "1.0"	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\ProgID\ = "BaiduBarX.ToolBand.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\TypeLib\ = "{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib\ = "{3A8C9D89-3271-45F4-98C0-56B0F5A16172}"	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\TypeLib\ = "{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.5\CLSID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\0\win32\ = "C:\\Program Files (x86)\\Baidu\\Toolbar\\BaiduBarX.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BarBroker.BDBroker\CLSID\ = "{5BECD27B-DCF5-4DEF-B066-486A47245C03}"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.3	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\FLAGS\ = "0"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\ProgID	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\ProgID\ = "BaiduBarEx.BDHomePage.5"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool\ = "°Ù¶È¹¤¾ßÀ¸¸¨Öú¶ÔÏó"	regsvr32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

regsvr32.exeregsvr32.exe

description	pid	process	target process
PID 2372 wrote to memory of 268	2372	regsvr32.exe	regsvr32.exe
PID 2372 wrote to memory of 268	2372	regsvr32.exe	regsvr32.exe
PID 2372 wrote to memory of 268	2372	regsvr32.exe	regsvr32.exe
PID 2372 wrote to memory of 268	2372	regsvr32.exe	regsvr32.exe
PID 2372 wrote to memory of 268	2372	regsvr32.exe	regsvr32.exe
PID 2372 wrote to memory of 268	2372	regsvr32.exe	regsvr32.exe
PID 2372 wrote to memory of 268	2372	regsvr32.exe	regsvr32.exe
PID 268 wrote to memory of 2596	268	regsvr32.exe	BarBroker.exe
PID 268 wrote to memory of 2596	268	regsvr32.exe	BarBroker.exe
PID 268 wrote to memory of 2596	268	regsvr32.exe	BarBroker.exe
PID 268 wrote to memory of 2596	268	regsvr32.exe	BarBroker.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\$PROGRAM_FILES\Baidu\Toolbar\BaiduBarX_Tmp\BaiduBarX.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2372

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\$PROGRAM_FILES\Baidu\Toolbar\BaiduBarX_Tmp\BaiduBarX.dll
2⤵
- Loads dropped DLL
- Installs/modifies Browser Helper Object
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:268

C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe
"C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe" -RegServer
3⤵
- Executes dropped EXE
- Modifies Internet Explorer settings
- Modifies registry class
PID:2596

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Program Files (x86)\Baidu\Toolbar\BaiduBarX.dll
Filesize
2.6MB

MD5
ba75680a2b710f7d2c575e816000f041

SHA1
a36e8bf8635473494cf58953227b21facdfd2682

SHA256
4c4c9cf71e8eb6f83fe875ad657512f1405648b30472df6597d92a679ee51801

SHA512
4408149541ab4b6eda6c9d6b95995be64773559701a18096c283e503fa3b5b22b624db5956c7916f4cecd80c47036e13b100dd51069ef23292749ef4a89bfbb3

Download Submit
\Program Files (x86)\Baidu\Toolbar\BarBroker.exe
Filesize
228KB

MD5
adafb685914e48bcb2cc47d02de967d4

SHA1
241e39b0b51028ab451f0abb2e39492ce18e2701

SHA256
2a5e0c7f3698b8192df5ca2548944632e656eb27f4b3b3bd252b370b7348ad70

SHA512
8f01feebc063c0b611c7503f1bbcbd5479fb65f0acc8c66eae91965228c5c8037bafc3393b251d77f2f62d457d2e661b99d703bebac7df269792f030258388ed

Download Submit
\Program Files (x86)\Baidu\Toolbar\rc.dll
Filesize
468KB

MD5
fd00f62dcb903fbbbe40aeb48a482708

SHA1
1333d5ef06dfd707e40a1322cb40c08487b3f50d

SHA256
3efdb3bf488038cf8c08b690f4bfa469fb49b9d2ed585ba3c88feb0770f37350

SHA512
c83ac2be93e05527e09de4ea0b3617bbcbb5747890c7a0b861ad3b55aaaec3d148783a7fcbbacb66b92ede37440d82d41fbfe8a871273f1c6796fdcbe63131a2

Download Submit
memory/268-2-0x0000000002810000-0x0000000002AA8000-memory.dmp

Filesize
2.6MB

Download
memory/268-9-0x0000000002BB0000-0x0000000002C25000-memory.dmp

Filesize
468KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads