b19a2cefa3b2211800b2ab005eccef2f562bd230617c84a3b2918d481498d144

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 04:30

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General

Target
tbu03852/dospop.dll
Size 2.1MB
Sample240415-e49z8ahb2t
SHA256 0c647f88a0f7f7d6ea9796bd7b0401b6359edeb21060c26b911dcfdfc874b37f
MD5 0f1846b9162b08ba83b187f8b812882a
SHA1 3bb577471354017b5c8f6ff1f5159801000110e8
SHA512 ebacf6356894c8159d6ce0a3a4aac973b09ad6e80751f0edfda004e1df5cc2221f9967d1eff0cb59a3acfbede05e92ddd20b1dc095b2db65ca5c3eb278b9e5c0
SSDEEP 24576:Wp59EhTXStxDbjCAeCQlCZe/Eh9G9la4QoaTVDv9:AkMCNlq0aRoaTd
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

adware 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\{57F9FEF0-6EAE-4030-A68A-30FDC38B1B13}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{57F9FEF0-6EAE-4030-A68A-30FDC38B1B13}\ = "TBSB09293"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{57F9FEF0-6EAE-4030-A68A-30FDC38B1B13}\NoExplorer = "1"	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 19 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293\Toolbar	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_LOCALMACHINE_LOCKDOWN\iexplore.exe = "0"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293\Toolbar\toolbar_id = "{F8422267-5652-40c1-B23C-8D63EC0FB845}"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293\Toolbar\updateXML = "1"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293\Toolbar\CurrentLayout = "0"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293\Toolbar\TBShow = "1"	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Toolbar\{BFB5F154-9212-46F3-B547-AC6106030A54}	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_LOCALMACHINE_LOCKDOWN	regsvr32.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Toolbar\{BFB5F154-9212-46F3-B547-AC6106030A54} = 00	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293\Toolbar	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293\Toolbar\toolbar_version = "DosPop Toolbar 1.37"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software\TBSB09293\Toolbar\firstTime = "1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Internet Explorer\Toolbar	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Software	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Internet Explorer\InternetRegistry\REGISTRY	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24BBB29A-FB7B-425B-822D-15D0B861E99B}\ = "IToolbarObj"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B75CF7AE-80B0-45C3-BA27-BABC08484319}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.IEToolbar\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{57F9FEF0-6EAE-4030-A68A-30FDC38B1B13}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\ProgID\ = "TBSB09293.IEToolbar.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tbu03852\\tbhelper.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24BBB29A-FB7B-425B-822D-15D0B861E99B}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B75CF7AE-80B0-45C3-BA27-BABC08484319}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B75CF7AE-80B0-45C3-BA27-BABC08484319}\TypeLib\ = "{77AA25E8-6083-4949-A831-9CB11861DC10}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.IEToolbar\CurVer\ = "TBSB09293.IEToolbar.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\VersionIndependentProgID\ = "TBSB09293.TBSB09293"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\ = "URLSearchHook 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook\CLSID\ = "{CA3EB689-8F09-4026-AA10-B9534C691CE0}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\VersionIndependentProgID\ = "URLSearchHook.ToolbarURLSearchHook"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{77AA25E8-6083-4949-A831-9CB11861DC10}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook.1\CLSID\ = "{CA3EB689-8F09-4026-AA10-B9534C691CE0}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{77AA25E8-6083-4949-A831-9CB11861DC10}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tbu03852\\"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B75CF7AE-80B0-45C3-BA27-BABC08484319}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{4509D3CC-B642-4745-B030-645B79522C6D}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Toolbar3.TBSB09293\CLSID\ = "{57F9FEF0-6EAE-4030-A68A-30FDC38B1B13}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{77AA25E8-6083-4949-A831-9CB11861DC10}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ = "IToolbarURLSearchHook"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.IEToolbar\ = "IE Toolbar"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{57F9FEF0-6EAE-4030-A68A-30FDC38B1B13}\ = "TBSB09293 Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Toolbar3.TBSB09293	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{77AA25E8-6083-4949-A831-9CB11861DC10}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{24BBB29A-FB7B-425B-822D-15D0B861E99B}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{24BBB29A-FB7B-425B-822D-15D0B861E99B}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tbu03852\\tbhelper.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.IEToolbar.1\CLSID\ = "{BFB5F154-9212-46F3-B547-AC6106030A54}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\TypeLib\ = "{77AA25E8-6083-4949-A831-9CB11861DC10}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\Implemented Categories\{7DD95802-9882-11CF-9FA9-00AA006C42C4}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{57F9FEF0-6EAE-4030-A68A-30FDC38B1B13}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tbu03852\\dospop.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{77AA25E8-6083-4949-A831-9CB11861DC10}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\VersionIndependentProgID\ = "TBSB09293.IEToolbar"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.TBSB09293\CLSID\ = "{BFB5F154-9212-46F3-B547-AC6106030A54}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{24BBB29A-FB7B-425B-822D-15D0B861E99B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.TBSB09293.3	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.IEToolbar.1\ = "IE Toolbar"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BFB5F154-9212-46F3-B547-AC6106030A54}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{77AA25E8-6083-4949-A831-9CB11861DC10}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4897BBA6-48D9-468C-8EFA-846275D7701B}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000_Classes\WOW6432Node\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.IEToolbar\CLSID\ = "{BFB5F154-9212-46F3-B547-AC6106030A54}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.IEToolbar\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook\ = "ToolbarURLSearchHook Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TBSB09293.TBSB09293.3\ = "DosPop Toolbar"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{77AA25E8-6083-4949-A831-9CB11861DC10}\1.0\ = "Toolbar3 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{B75CF7AE-80B0-45C3-BA27-BABC08484319}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\URLSearchHook.ToolbarURLSearchHook\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\InprocServer32\ThreadingModel = "both"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA3EB689-8F09-4026-AA10-B9534C691CE0}\TypeLib\ = "{4509D3CC-B642-4745-B030-645B79522C6D}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4472 wrote to memory of 448	4472	regsvr32.exe	84
PID 4472 wrote to memory of 448	4472	regsvr32.exe	84
PID 4472 wrote to memory of 448	4472	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\tbu03852\dospop.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\tbu03852\dospop.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:448

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/448-13-0x0000000002930000-0x0000000002983000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads