4fcda09ac8e90aaf0daa6b200ddd0a69fdc3deaa82eae60016342f289e694035

Analysis

max time kernel
150s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
08/10/2024, 23:49

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General

Target

FineTop.exe
Size

42KB
MD5

61c81941b91b1d502971bd42a29806a1
SHA1

72ee7b2fb665f01415a00267cbc1a5d385d1f0cf
SHA256

6e0d4e65b147d69b249c40c1f9cc5ea82ae3179777bd25462eef3449d3bbbdb8
SHA512

0583df8495ed3c252713bfa2b0b38b9a2aac8ce22ed5e50e42cf5a7d94e903e605614a5ab507a0b10497f434759c945eec7ae1f124f530fe3d488f4ec661de7f
SSDEEP

384:kVhtux58TuX+ON45/EoF0naexusdPq18W/07c4xp5/SYJLuPkCQub:kVhtY8TuZN45NF0rnkH/0A4x/7LuD

Score

6^/10

adware discovery persistence stealer

Malware Config

Signatures

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\FineTop = "C:\\Users\\Admin\\AppData\\Local\\Temp\\FineTop.exe"	FineTop.exe

Installs/modifies Browser Helper Object 2 TTPs 1 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\{CBF53489-AD8D-4637-965A-413861EEC7CF}	regsvr32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	FineTop.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Internet Explorer\Main\TabProcGrowth = "0"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\TabProcGrowth = "0"	regsvr32.exe

Modifies registry class 46 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\FineTop.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand.1\CLSID\ = "{CBF53489-AD8D-4637-965A-413861EEC7CF}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\VersionIndependentProgID\ = "FineTop.TopBand"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\ = "FineTop"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ = "ITopBand"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib\ = "{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\ = "TopBand Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CLSID\ = "{CBF53489-AD8D-4637-965A-413861EEC7CF}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ = "ITopBand"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib\ = "{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\ProgID\ = "FineTop.TopBand.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\ = "FineTop 1.0 Type Library"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand.1\ = "TopBand Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CurVer\ = "FineTop.TopBand.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\TypeLib\ = "{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\FineTop.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CLSID	regsvr32.exe

Suspicious use of SetWindowsHookEx 64 IoCs

pid	Process
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe
824	FineTop.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 824 wrote to memory of 1744	824	FineTop.exe	31
PID 824 wrote to memory of 1744	824	FineTop.exe	31
PID 824 wrote to memory of 1744	824	FineTop.exe	31
PID 824 wrote to memory of 1744	824	FineTop.exe	31
PID 824 wrote to memory of 1744	824	FineTop.exe	31
PID 824 wrote to memory of 1744	824	FineTop.exe	31
PID 824 wrote to memory of 1744	824	FineTop.exe	31

C:\Users\Admin\AppData\Local\Temp\FineTop.exe
"C:\Users\Admin\AppData\Local\Temp\FineTop.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:824
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32 /s "C:\Users\Admin\AppData\Local\Temp\FineTop.dll"
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:1744