4fcda09ac8e90aaf0daa6b200ddd0a69fdc3deaa82eae60016342f289e694035

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08/10/2024, 23:49

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General

Target

FineTop.dll
Size

130KB
MD5

82a6904974f4f20c147fce776663b1b0
SHA1

eee8e0a93cb1be3dcfef2699f154f0881e68dda4
SHA256

407a5ed628dbd6f1c2cea2276b4ea98f053160dd6f5ee3007dcbad02382a1a77
SHA512

50dfb3c8e67e1ef794f3dd1b4caaa515bfe342e17e4bb73dd2b1e58a2ac61e327bed2395c1f36d8f2a69de8c5a73ce03eda03a9c0c5515b5965191edfb22c005
SSDEEP

3072:KKkpqCWz8mt3aIJWmKk0T7gHiZKgKUxnPhfgafdg:KK1CkWnYHi4N0Ph

Score

6^/10

adware discovery stealer

Malware Config

Signatures

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

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 Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\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\FineTop.TopBand.1\CLSID\ = "{CBF53489-AD8D-4637-965A-413861EEC7CF}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand	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}\InprocServer32	regsvr32.exe
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
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	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\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}	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}	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\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\InprocServer32\ThreadingModel = "Apartment"	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\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib\ = "{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ = "ITopBand"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand.1\ = "TopBand Class"	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}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\ProgID\ = "FineTop.TopBand.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\0\win32	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\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\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CurVer\ = "FineTop.TopBand.1"	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\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}	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\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ = "ITopBand"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 2504	4496	regsvr32.exe	84
PID 4496 wrote to memory of 2504	4496	regsvr32.exe	84
PID 4496 wrote to memory of 2504	4496	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\FineTop.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Windows\SysWOW64\regsvr32.exe
  /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:2504

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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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads