3f6cabf991e4259fc25b172de3e770595a00a38a4c7b9533353b71e5ef781082

Analysis

max time kernel
133s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
26-01-2024 05:00

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General

Target

76730b8b88b3a581159783462ca67ff4.dll
Size

148KB
MD5

76730b8b88b3a581159783462ca67ff4
SHA1

aa4b7bbbf988db356a72875e6239087ed63747b2
SHA256

3f6cabf991e4259fc25b172de3e770595a00a38a4c7b9533353b71e5ef781082
SHA512

e5538829d906a1556150937a7acb3fd8eaab423640ebba4042c263ddc29f7114ee26f058e1e417d5eb1a23a36a2869b019aab9f84ec811b9110d0b988f7131bc
SSDEEP

1536:lRxweALym2TAdU899lt4+hV/NarrWUuAztz1TkIPur5oytOnP8Er/Cto7LMv:l7k/2OH4SMVBxXur5oyPEr/Ct+LM

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 1 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\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}	regsvr32.exe

Modifies registry class 42 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer\ = "IEHlprObj.IEHlprObj.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\ = "IEHlprObj Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\VersionIndependentProgID\ = "IEHlprObj.IEHlprObj"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\ = "IIEHlprObj"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\ = "IEHlprObj Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\TypeLib\ = "{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0\ = "IEHelper 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\ = "IIEHlprObj"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\ProgID\ = "IEHlprObj.IEHlprObj.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\ = "IEHlprObj Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\TypeLib\ = "{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\76730b8b88b3a581159783462ca67ff4.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{C5CC4DC1-5CCE-48A1-A00F-786507E7A63A}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID\ = "{C5CC4DC2-5CCE-48A1-A00F-786507E7A63A}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C5CC4DC8-5CCE-48A1-A00F-786507E7A63A}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\76730b8b88b3a581159783462ca67ff4.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1600	regsvr32.exe
1600	regsvr32.exe
1600	regsvr32.exe
1600	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4656 wrote to memory of 1600	4656	regsvr32.exe	86
PID 4656 wrote to memory of 1600	4656	regsvr32.exe	86
PID 4656 wrote to memory of 1600	4656	regsvr32.exe	86

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\76730b8b88b3a581159783462ca67ff4.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\76730b8b88b3a581159783462ca67ff4.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:1600

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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