Overview
overview
7Static
static
78fecd0dd91...26.exe
windows7-x64
78fecd0dd91...26.exe
windows10-2004-x64
7$PLUGINSDI...ig.dll
windows7-x64
3$PLUGINSDI...ig.dll
windows10-2004-x64
3$PLUGINSDI...dl.dll
windows7-x64
3$PLUGINSDI...dl.dll
windows10-2004-x64
3$PLUGINSDI...el.dll
windows7-x64
7$PLUGINSDI...el.dll
windows10-2004-x64
7$PLUGINSDIR/UAC.dll
windows7-x64
3$PLUGINSDIR/UAC.dll
windows10-2004-x64
3$PLUGINSDI...ss.dll
windows7-x64
3$PLUGINSDI...ss.dll
windows10-2004-x64
3FineTop.dll
windows7-x64
6FineTop.dll
windows10-2004-x64
6FineTop.exe
windows7-x64
6FineTop.exe
windows10-2004-x64
6adc.dll
windows7-x64
1adc.dll
windows10-2004-x64
1Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
04/02/2024, 19:08
Behavioral task
behavioral1
Sample
8fecd0dd91d9d0811d67e18db275c126.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
8fecd0dd91d9d0811d67e18db275c126.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/IpConfig.dll
Resource
win7-20231129-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/IpConfig.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/NSISdl.dll
Resource
win7-20231215-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/NSISdl.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral7
Sample
$PLUGINSDIR/SelfDel.dll
Resource
win7-20231215-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/SelfDel.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral9
Sample
$PLUGINSDIR/UAC.dll
Resource
win7-20231129-en
Behavioral task
behavioral10
Sample
$PLUGINSDIR/UAC.dll
Resource
win10v2004-20231222-en
Behavioral task
behavioral11
Sample
$PLUGINSDIR/nsProcess.dll
Resource
win7-20231215-en
Behavioral task
behavioral12
Sample
$PLUGINSDIR/nsProcess.dll
Resource
win10v2004-20231222-en
Behavioral task
behavioral13
Sample
FineTop.dll
Resource
win7-20231215-en
Behavioral task
behavioral14
Sample
FineTop.dll
Resource
win10v2004-20231215-en
Behavioral task
behavioral15
Sample
FineTop.exe
Resource
win7-20231129-en
Behavioral task
behavioral16
Sample
FineTop.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral17
Sample
adc.dll
Resource
win7-20231215-en
Behavioral task
behavioral18
Sample
adc.dll
Resource
win10v2004-20231222-en
General
-
Target
FineTop.dll
-
Size
130KB
-
MD5
82a6904974f4f20c147fce776663b1b0
-
SHA1
eee8e0a93cb1be3dcfef2699f154f0881e68dda4
-
SHA256
407a5ed628dbd6f1c2cea2276b4ea98f053160dd6f5ee3007dcbad02382a1a77
-
SHA512
50dfb3c8e67e1ef794f3dd1b4caaa515bfe342e17e4bb73dd2b1e58a2ac61e327bed2395c1f36d8f2a69de8c5a73ce03eda03a9c0c5515b5965191edfb22c005
-
SSDEEP
3072:KKkpqCWz8mt3aIJWmKk0T7gHiZKgKUxnPhfgafdg:KK1CkWnYHi4N0Ph
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 1 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{CBF53489-AD8D-4637-965A-413861EEC7CF} regsvr32.exe -
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\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\ = "TopBand Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\ = "FineTop 1.0 Type Library" 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\TypeLib\{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" 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}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib\Version = "1.0" 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}\Programmable 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\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 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\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ = "ITopBand" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\ = "TopBand Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CurVer 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 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}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" 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\WOW6432Node\CLSID\{CBF53489-AD8D-4637-965A-413861EEC7CF}\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\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib\ = "{3E54C6DC-A2C6-404C-A36F-DE346281B3A7}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ = "ITopBand" 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}\ProgID\ = "FineTop.TopBand.1" 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 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\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\FineTop.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CurVer\ = "FineTop.TopBand.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\FineTop.TopBand\CLSID 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 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 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{F1AACA8D-4899-4D6C-B360-403A5A20B5D2}\ProxyStubClsid32 regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4856 wrote to memory of 4644 4856 regsvr32.exe 40 PID 4856 wrote to memory of 4644 4856 regsvr32.exe 40 PID 4856 wrote to memory of 4644 4856 regsvr32.exe 40
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\FineTop.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4856 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\FineTop.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:4644
-