20a176539d83e93223b19b30c5ccbbc19b76ac2bb43c831d55f1e49a6ca4d24a

Analysis

max time kernel
122s
max time network
127s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
26-12-2023 15:04

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General

Target

77b59f9c9c6804bddf75cc35699a5922.dll
Size

512KB
MD5

77b59f9c9c6804bddf75cc35699a5922
SHA1

fbf2a9fb97601bb9322d962b983e4d24c93987ab
SHA256

20a176539d83e93223b19b30c5ccbbc19b76ac2bb43c831d55f1e49a6ca4d24a
SHA512

22b4bd83a77d1227f89cd6700bc9ecf879f72a4837082a539bc310feba11e2bee348ea1a5321e58018c87a3cde1ed7d680dd19845b0710bb2e1283845e61d43c
SSDEEP

6144:K8jlPhxJ8ZC2WS+6dWeKDchtbRI4YaMzWvdH:9xaZC2W2KWG4Ya2WvdH

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\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\ = "Linkey"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 44 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Linkey.Linkey\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\ProgID\ = "Linkey.Linkey"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\ = "IEDllLib"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\77b59f9c9c6804bddf75cc35699a5922.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib\ = "{726E90BE-DC22-4965-B215-E0784DC26F47}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ = "ILinkey"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\iedll.dll\AppID = "{6A7CD9EC-D8BD-4340-BCD0-77C09A282921}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ = "ILinkey"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib\ = "{726E90BE-DC22-4965-B215-E0784DC26F47}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\iedll.dll	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Linkey.Linkey	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\VersionIndependentProgID\ = "Linkey.Linkey"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\77b59f9c9c6804bddf75cc35699a5922.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\Implemented Categories	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{6A7CD9EC-D8BD-4340-BCD0-77C09A282921}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{6A7CD9EC-D8BD-4340-BCD0-77C09A282921}\ = "Linkey"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\ = "Linkey"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Linkey.Linkey\ = "Linkey Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Linkey.Linkey\CLSID\ = "{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 1208	2356	regsvr32.exe	28
PID 2356 wrote to memory of 1208	2356	regsvr32.exe	28
PID 2356 wrote to memory of 1208	2356	regsvr32.exe	28
PID 2356 wrote to memory of 1208	2356	regsvr32.exe	28
PID 2356 wrote to memory of 1208	2356	regsvr32.exe	28
PID 2356 wrote to memory of 1208	2356	regsvr32.exe	28
PID 2356 wrote to memory of 1208	2356	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\77b59f9c9c6804bddf75cc35699a5922.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\77b59f9c9c6804bddf75cc35699a5922.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1208

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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