754e73d783386a99ea36946cb578d34abe841adb9e32c0471711006d3ffeb61b

Analysis

max time kernel
119s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25/01/2025, 02:55

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General

Target

bho_project.dll
Size

90KB
MD5

3d460002229cadb478000e336ed844c1
SHA1

7053f2dd4e3873dde9b082e577556101bb24773f
SHA256

2efbd2f8f49f059127d69d8437e1937ec4c378705a74c1462f853347739c7c83
SHA512

1536fbc20805ee07f7a84d26614fca3df94593cf279e59e7afdca68cb2d1c8df3f35d7dbc2ccf6f833ab6dfd94126a2aa4a3eaabbc705b1bc3a2104f8d7eaa97
SSDEEP

1536:vz+PSmHiTBjElgMfpA/39txZwk8oSL5HJ/QlyGqW:viPSiiuKMfpC39juoi5HJ/Ql6W

Score

6^/10

adware discovery stealer

Malware Config

Signatures

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\{625F420E-A4A9-4B40-BC23-716C1C43893A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{625F420E-A4A9-4B40-BC23-716C1C43893A}\ = "BHO_PROJECT"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{625F420E-A4A9-4B40-BC23-716C1C43893A}\NoExplorer = "1"	regsvr32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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

Modifies registry class 28 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\ = "bho_project 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib\ = "{B00FE392-639D-4688-976E-A1BFF368CB96}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib\ = "{B00FE392-639D-4688-976E-A1BFF368CB96}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{186E19A3-B909-4F48-B687-BB81EB8BC7CE}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ = "Ibho_object"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ = "Ibho_object"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{186E19A3-B909-4F48-B687-BB81EB8BC7CE}\ = "bho_project"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bho_project.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\bho_project.DLL	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\bho_project.DLL\AppID = "{186E19A3-B909-4F48-B687-BB81EB8BC7CE}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2296	2280	regsvr32.exe	31
PID 2280 wrote to memory of 2296	2280	regsvr32.exe	31
PID 2280 wrote to memory of 2296	2280	regsvr32.exe	31
PID 2280 wrote to memory of 2296	2280	regsvr32.exe	31
PID 2280 wrote to memory of 2296	2280	regsvr32.exe	31
PID 2280 wrote to memory of 2296	2280	regsvr32.exe	31
PID 2280 wrote to memory of 2296	2280	regsvr32.exe	31

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\bho_project.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\bho_project.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2296

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

Windows 7 deprecation

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