8bd05c7e27e65b921ae28194857ff2769f249dd942342a70ff0878e678a3ed22

Analysis

max time kernel
117s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/02/2025, 20:16

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General

Target

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

2.7MB
MD5

9929bf8efb3087a1a832fc09ac97bef4
SHA1

4df24505648dec56488d68cd1ce5265c4c31e5bb
SHA256

2867243b3b6584986098d5e5f921f2dff5dfe5fe605725b263371bc8ff3fa279
SHA512

a172e659ac803bf8ed260af80caf6e94ab076e6759a8f77e30e0cf8dd99fb0db690db7b0656bfeb3bae324082665d6ca219d775591df988f90be0d5633054cdb
SSDEEP

49152:5WiPPqsRfBqN7+PBHWNUhDGJRmO+HJT99zxy+BQ9AwiTgTnklMV:5W+qsdBqN7+PBHWNUyJRDw9EUQ9Au

Score

7^/10

adware discovery stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2432	BarBroker.exe

Loads dropped DLL 5 IoCs

pid	Process
2132	regsvr32.exe
2132	regsvr32.exe
2132	regsvr32.exe
2132	regsvr32.exe
2132	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

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

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Baidu\Toolbar\BaiduBarX.dll	regsvr32.exe
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

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	BarBroker.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Internet Explorer\Main	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes"	regsvr32.exe
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

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.5\ = "°Ù¶È¹¤¾ßÀ¸¸öÐÔ»¯Ê×Ò³Ö§³Ö×é¼þ"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23A2B2B7-21DE-4B88-AFBA-5A918ABBF463}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6C773CA2-F142-4B2C-981A-FD3B1BEC1578}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6C773CA2-F142-4B2C-981A-FD3B1BEC1578}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\VersionIndependentProgID\ = "BaiduBarEx.BDHomePage"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23A2B2B7-21DE-4B88-AFBA-5A918ABBF463}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\ = "°Ù¶È¹¤¾ßÀ¸"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\ = "ITool"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\ = "BDBroker Class"	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\BaiduBarX.ToolBand\ = "°Ù¶È¹¤¾ßÀ¸"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\ProgID\ = "BaiduBarX.ToolBand.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\BarBroker.EXE	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BDLogin\CurVer\ = "BaiduBarX.BDLogin.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23A2B2B7-21DE-4B88-AFBA-5A918ABBF463}\VersionIndependentProgID\ = "BaiduBarX.BDLogin"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\FLAGS	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.5\CLSID\ = "{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23A2B2B7-21DE-4B88-AFBA-5A918ABBF463}\InprocServer32\ = "C:\\Program Files (x86)\\Baidu\\Toolbar\\BaiduBarX.dll"	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\Wow6432Node\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\ = "IBDBroker"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23A2B2B7-21DE-4B88-AFBA-5A918ABBF463}\ProgID\ = "BaiduBarX.BDLogin.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BarBroker.BDBroker.1\CLSID\ = "{5BECD27B-DCF5-4DEF-B066-486A47245C03}"	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib\Version = "1.0"	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE.1\ = "Baidu Toolbar BHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE\CurVer\ = "BaiduBarX.BandIE.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.2\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand.1\CLSID\ = "{B580CF65-E151-49C3-B73F-70B13FCA8E86}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BDLogin\CurVer	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23A2B2B7-21DE-4B88-AFBA-5A918ABBF463}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\0	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}\1.0\HELPDIR\	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib\ = "{3A8C9D89-3271-45F4-98C0-56B0F5A16172}"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE.1\CLSID\ = "{77FEF28E-EB96-44FF-B511-3185DEA48697}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.3	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.4\CLSID\ = "{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE\CLSID\ = "{77FEF28E-EB96-44FF-B511-3185DEA48697}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.3\ = "°Ù¶È¹¤¾ßÀ¸¸öÐÔ»¯Ê×Ò³Ö§³Ö×é¼þ"	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\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\ProgID\ = "BaiduBarX.BandIE.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{23A2B2B7-21DE-4B88-AFBA-5A918ABBF463}\InprocServer32	regsvr32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 2132	372	regsvr32.exe	30
PID 372 wrote to memory of 2132	372	regsvr32.exe	30
PID 372 wrote to memory of 2132	372	regsvr32.exe	30
PID 372 wrote to memory of 2132	372	regsvr32.exe	30
PID 372 wrote to memory of 2132	372	regsvr32.exe	30
PID 372 wrote to memory of 2132	372	regsvr32.exe	30
PID 372 wrote to memory of 2132	372	regsvr32.exe	30
PID 2132 wrote to memory of 2432	2132	regsvr32.exe	31
PID 2132 wrote to memory of 2432	2132	regsvr32.exe	31
PID 2132 wrote to memory of 2432	2132	regsvr32.exe	31
PID 2132 wrote to memory of 2432	2132	regsvr32.exe	31

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:372
- 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
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2132
- - C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe
    "C:\Program Files (x86)\Baidu\Toolbar\BarBroker.exe" -RegServer
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Modifies Internet Explorer settings
    - Modifies registry class
    PID:2432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Program Files (x86)\Baidu\Toolbar\BaiduBarX.dll

Filesize
2.7MB

MD5
9929bf8efb3087a1a832fc09ac97bef4

SHA1
4df24505648dec56488d68cd1ce5265c4c31e5bb

SHA256
2867243b3b6584986098d5e5f921f2dff5dfe5fe605725b263371bc8ff3fa279

SHA512
a172e659ac803bf8ed260af80caf6e94ab076e6759a8f77e30e0cf8dd99fb0db690db7b0656bfeb3bae324082665d6ca219d775591df988f90be0d5633054cdb

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

Filesize
232KB

MD5
6b224c78c4b3433e754676dfab012142

SHA1
0ef3ad9248de0f4cef24ff110c87157c8433cc83

SHA256
567ea2b8aee289f74b5affd5ff6e22ca0fd68d03071670ae060359fc5dae2e88

SHA512
9561fa4efe992781a5692c7da7eb9b765668b7592f41417c3de9e1841f8e85f6dfc3fcd0233842489da54157c81c31211123bda45798539efa696f8cae6149d7

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

Filesize
496KB

MD5
51e4f617d2ad241171f437001565ac71

SHA1
1af01b7428e3493825451980e25306941ca50e31

SHA256
ca30dd00c9586efc075376c4b53fdcc2dcee6c1ad3ee83eb8f801e95d1dd250a

SHA512
93044c79020a710dc85a848fef030084b41e12334492e7a11973107c7d79e352c1ea7b9f8fc0f116d5fce341cb6d3317acd4fa8fb5396765cc3724773f571e6f

Download Submit
memory/2132-2-0x0000000002870000-0x0000000002B25000-memory.dmp

Filesize
2.7MB

Download
memory/2132-9-0x0000000002310000-0x000000000238C000-memory.dmp

Filesize
496KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads