3feea9bdfbfe08dc7b38dee6efa9c503a0b5545534c808cd777e57cc4afda4b0

Analysis

max time kernel
122s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-12-2023 14:33

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General

Target

25f39c49ee0a6425632dd063b8855770.dll
Size

140KB
MD5

25f39c49ee0a6425632dd063b8855770
SHA1

b3f1c1d36c4209d856d005198ac3da5a30f7419a
SHA256

3feea9bdfbfe08dc7b38dee6efa9c503a0b5545534c808cd777e57cc4afda4b0
SHA512

70d9d8a82d839702d6290c872427a84c67728695008d8d881dcff84007472af9037bcfac2f4cd2001ad52b8d75b5c3dac3a3aca711e88400282b7939e39e81fe
SSDEEP

3072:b7Xw0CzF3+PpjdbnYM8FxYk0sB5StXAxrB:fFYmIm

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\{D1ECD019-8423-43de-98D1-7892AF2DA309}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D1ECD019-8423-43de-98D1-7892AF2DA309}\ = "FreeWorkz Games"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{D1ECD019-8423-43de-98D1-7892AF2DA309}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 60 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\VersionIndependentProgID\ = "FreeWorkz.Extension"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\TypeLib\ = "{9B909531-FFB8-40b9-A739-18117253BF08}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\ = "IExtension"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\ = "IExtension"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension\CLSID\ = "{D1ECD019-8423-43de-98D1-7892AF2DA309}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\ProgID\ = "FreeWorkz.Extension.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\ = "FreeWorkz Games"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0\ = "FreeWorkz Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\25f39c49ee0a6425632dd063b8855770.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension\CurVer\ = "FreeWorkz.Extension.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\ProxyStubClsid32\ = "{00020420-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\TypeLib\ = "{9B909531-FFB8-40B9-A739-18117253BF08}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension.1\ = "FreeWorkz Games"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\25f39c49ee0a6425632dd063b8855770.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9B909531-FFB8-40B9-A739-18117253BF08}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\ = "_IExtensionEvents"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\ = "_IExtensionEvents"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\TypeLib\ = "{9B909531-FFB8-40B9-A739-18117253BF08}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension.1\CLSID\ = "{D1ECD019-8423-43de-98D1-7892AF2DA309}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\FreeWorkz.Extension\ = "FreeWorkz Games"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{6FC29631-F716-47FC-9118-2498F0D788BA}\TypeLib\ = "{9B909531-FFB8-40B9-A739-18117253BF08}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D1ECD019-8423-43de-98D1-7892AF2DA309}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}\TypeLib\ = "{9B909531-FFB8-40B9-A739-18117253BF08}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{B5B7CB41-8A10-4C67-846A-093D8F2B0113}	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2284 wrote to memory of 1784	2284	regsvr32.exe	29
PID 2284 wrote to memory of 1784	2284	regsvr32.exe	29
PID 2284 wrote to memory of 1784	2284	regsvr32.exe	29
PID 2284 wrote to memory of 1784	2284	regsvr32.exe	29
PID 2284 wrote to memory of 1784	2284	regsvr32.exe	29
PID 2284 wrote to memory of 1784	2284	regsvr32.exe	29
PID 2284 wrote to memory of 1784	2284	regsvr32.exe	29

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\25f39c49ee0a6425632dd063b8855770.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2284
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\25f39c49ee0a6425632dd063b8855770.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1784

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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