5ea84f8f933017eb51519e628002909ba5dcf81a34830147ff2368a9d430496d

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23-08-2024 15:30

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General

Target

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

2.3MB
MD5

3c2b8a41a1706ca9aa5efc33defaf7cc
SHA1

d9f8608170901445f69585dbc7d07d3d205e987e
SHA256

3fa7b750c18fbc761feaf3c738c0804ea8f02969b73764082b94ff7f60ce13b5
SHA512

9704f399f9beb80d3e91cb8f0bd018351ff031c0fb390ef3d4fdb7b90faf9f0993d49579f8ccafa7e3480f502c1594021f72e1d990327e72e6aa01ecbbd9277c
SSDEEP

49152:KY470bLUv62Xa2mXExRCZfETFPSHAnUWTOeKDF7ssT9F:f470bLUv62Xa2jxR2cXq

Score

7^/10

adware discovery stealer

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3112	BarBroker.exe

Loads dropped DLL 4 IoCs

pid	Process
400	regsvr32.exe
400	regsvr32.exe
400	regsvr32.exe
400	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
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

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	BarBroker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.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\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-1-5-21-2718105630-359604950-2820636825-1000\Software\Microsoft\Internet Explorer\Main	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes"	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.1\CLSID\ = "{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}"	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\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\ = "IBandIE"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}\VersionIndependentProgID\ = "BaiduBarX.ToolBand"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.3\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\LocalServer32	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0	regsvr32.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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.2\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\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\BaiduBarEx.BDHomePage\ = "°Ù¶È¹¤¾ßÀ¸¸öÐÔ»¯Ê×Ò³Ö§³Ö×é¼þ"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\TypeLib\ = "{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}\ = "BarBroker"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}\1.0\0\win32	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\WOW6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\ProgID\ = "BarBroker.BDBroker.1"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\TypeLib	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\InprocServer32\ = "C:\\Program Files (x86)\\Baidu\\Toolbar\\BaiduBarX.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.5	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\ = "IBDHomePage"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\VersionIndependentProgID\ = "BarBroker.BDBroker"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{2923508C-9425-4A61-B9CE-A98239055916}	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\VersionIndependentProgID\ = "BaiduBar.Tool"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{77FEF28E-EB96-44FF-B511-3185DEA48697}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.4	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.4\CLSID\ = "{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7F05EE4-0426-454F-8013-C41E3596E9E9}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{D12F94FA-FC9A-41F7-B808-7FBB419DD7A6}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BarBroker.BDBroker.1\CLSID	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BarBroker.BDBroker\CurVer\ = "BarBroker.BDBroker.1"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3A8C9D89-3271-45F4-98C0-56B0F5A16172}	BarBroker.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{2923508C-9425-4A61-B9CE-A98239055916}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE\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\{A7F05EE4-0426-454F-8013-C41E3596E9E9}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{7EF05EFF-0E62-4040-8D81-73A10D8DE60F}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{B580CF65-E151-49C3-B73F-70B13FCA8E86}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{D158174C-004B-4A2E-9410-5442C10C60D2}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.BandIE.1\ = "Baidu Toolbar BHO"	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\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{7A33CE9E-4F33-4B4E-B263-6AEEAB6C3DC2}	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBar.Tool\CurVer\ = "BaiduBar.Tool.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BECD27B-DCF5-4DEF-B066-486A47245C03}\TypeLib\ = "{3A8C9D89-3271-45F4-98C0-56B0F5A16172}"	BarBroker.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarEx.BDHomePage	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E5D5D4A1-17F0-41D7-B1C6-0979F91E6F46}\InprocServer32\ = "C:\\Program Files (x86)\\Baidu\\Toolbar\\BaiduBarX.dll"	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\Interface\{4C2BFEC9-F03C-4F74-932E-5723E603B4AC}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BaiduBarX.ToolBand.1\ = "Baidu Toolbar"	regsvr32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 400	2304	regsvr32.exe	84
PID 2304 wrote to memory of 400	2304	regsvr32.exe	84
PID 2304 wrote to memory of 400	2304	regsvr32.exe	84
PID 400 wrote to memory of 3112	400	regsvr32.exe	87
PID 400 wrote to memory of 3112	400	regsvr32.exe	87
PID 400 wrote to memory of 3112	400	regsvr32.exe	87

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:2304
- 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:400
- - 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:3112

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

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

Filesize
2.3MB

MD5
3c2b8a41a1706ca9aa5efc33defaf7cc

SHA1
d9f8608170901445f69585dbc7d07d3d205e987e

SHA256
3fa7b750c18fbc761feaf3c738c0804ea8f02969b73764082b94ff7f60ce13b5

SHA512
9704f399f9beb80d3e91cb8f0bd018351ff031c0fb390ef3d4fdb7b90faf9f0993d49579f8ccafa7e3480f502c1594021f72e1d990327e72e6aa01ecbbd9277c

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

Filesize
229KB

MD5
12541c0a098a1ed1756be6d54d5fbc2c

SHA1
5ad9876ddf91ef9992a1ec83bf70becab5c3be23

SHA256
86eeaecc3ef104471423d3e280b26d03d95b80122e8178ab98d582115b403a06

SHA512
0f5d9292f3548b69d65688002554cc957b9b6b3e7179b1f0fa31fc4c134b9536378b74b6295223437d02827d97696952abac9566a8904edb2fb8cab577593c5b

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

Filesize
369KB

MD5
a75aab3e55d19694dc896a17e4fe5cb4

SHA1
1d5bcdaf5bf213d22eb865f2ac90c4059c5c3e23

SHA256
b0b1f00b4cfebbed6772af28a7b89edd6c1786f671672cf0e476499e34dfbe33

SHA512
da41da1bbb97548dee9aa07b0a7cbdc11804dd770b46f94f4ed15637e4f9622c3987ea04ffc0e0a54b5272524197d4fb96251a74e390cb5c1a46bfdb1343e4b1

Download Submit
memory/400-4-0x0000000003310000-0x000000000356A000-memory.dmp

Filesize
2.4MB

Download
memory/400-14-0x00000000015E0000-0x000000000163C000-memory.dmp

Filesize
368KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads