e145350adce8749251840ebfafa1c5d71bad4b1232604ad0aad18ecda6a56654

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-10-2024 09:28

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General

Target

b.dll
Size

47KB
MD5

51fb6cad0e60476e9e590e5f93a99af1
SHA1

3057e032afbe3259d555eaa7a2e24a2d970699c3
SHA256

361ab18e6e43d62699a4b15ea0b61ad67a494237b9b9100b18ae9e0fb4a7f355
SHA512

d878c8f02ec54153b08afeff5a8c94091a196a25f5e83ffd23ce560131638e0df412f1b3d286c25e69f9bcf89ab3bf7057b97b28efadecffa828ef526e434b03
SSDEEP

768:caN1WYwrnaH116zhviG5db78YVIfDrVpgMwVi85w4IglYMZJj+gYAig0u+S:ylraH1ohJ5x7crrn8B6sLZ1+gYAio

Score

6^/10

adware discovery stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 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\{676C542B-BC87-47cf-9EEB-1332C04731F6}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{676C542B-BC87-47cf-9EEB-1332C04731F6}\	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 47 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\ = "CTttPlayer Object"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\ProgID\ = "BHO.TttPlayer.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer.1\ = "CTttPlayer Object"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer\ = "CTttPlayer Object"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer\CLSID\ = "{676C542B-BC87-47cf-9EEB-1332C04731F6}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\TypeLib\ = "{0B9537DF-279F-4D6A-8F0C-DE66127E9642}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\AppID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\TypeLib\ = "{0B9537DF-279F-4D6A-8F0C-DE66127E9642}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\InprocServer32\ThreadingModel = "apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\VersionIndependentProgID\ = "BHO.TttPlayer"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\TypeLib\ = "{0B9537DF-279F-4D6A-8F0C-DE66127E9642}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{676C542B-BC87-47cf-9EEB-1332C04731F6}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\ = "ITttPlayer"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\ = "ITttPlayer"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{34DBC734-EAC0-401F-98A6-A8D8D715F278}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer.1\CLSID\ = "{676C542B-BC87-47cf-9EEB-1332C04731F6}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BHO.TttPlayer\CurVer\ = "BHO.TttPlayer.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0\ = "BHO 1.0 Type Library"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{0B9537DF-279F-4D6A-8F0C-DE66127E9642}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 2140	1840	regsvr32.exe	31
PID 1840 wrote to memory of 2140	1840	regsvr32.exe	31
PID 1840 wrote to memory of 2140	1840	regsvr32.exe	31
PID 1840 wrote to memory of 2140	1840	regsvr32.exe	31
PID 1840 wrote to memory of 2140	1840	regsvr32.exe	31
PID 1840 wrote to memory of 2140	1840	regsvr32.exe	31
PID 1840 wrote to memory of 2140	1840	regsvr32.exe	31

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\b.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2140

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

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Downloads

memory/2140-1-0x0000000000330000-0x0000000000332000-memory.dmp

Filesize
8KB

Download
memory/2140-0-0x0000000010000000-0x0000000010020000-memory.dmp

Filesize
128KB

Download