c1858c58a731667a2ddcc802391b69b2fac098afbb8e572084fbbb0aa3aa1d30

Analysis

max time kernel
147s
max time network
177s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
03/12/2022, 13:51

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General

Target

c1858c58a731667a2ddcc802391b69b2fac098afbb8e572084fbbb0aa3aa1d30.dll
Size

148KB
MD5

68e1e8fa1ace027940ee68d0cd1eae0b
SHA1

c8165aa20da277329d2c3b7cd35104614a79ff63
SHA256

c1858c58a731667a2ddcc802391b69b2fac098afbb8e572084fbbb0aa3aa1d30
SHA512

bd817c7d02a6c64cd31a0162be3bd53d8ce7c3890e05abbbdacac8ef7ed879fe2012c00687f721477412c7c43509aa4c440778e98d736fbf918f888b75230a38
SSDEEP

3072:+P9EdWvsLwuQ9XSDMvnji6wur5OyT+Er/Ct+LY:+P9AW0LwlloMvZwu9OyaEr/Cta

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\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}	regsvr32.exe

Modifies registry class 42 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\ = "IEHlprObj Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer\ = "IEHlprObj.IEHlprObj.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\VersionIndependentProgID\ = "IEHlprObj.IEHlprObj"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\ = "IIEHlprObj"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\ProgID\ = "IEHlprObj.IEHlprObj.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\TypeLib\ = "{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID\ = "{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c1858c58a731667a2ddcc802391b69b2fac098afbb8e572084fbbb0aa3aa1d30.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\ = "IEHlprObj Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{BF3DBFF2-1B02-4FA2-8BA3-E05EB3348AA5}\ = "IEHlprObj Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0\ = "IEHelper 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\ = "IIEHlprObj"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\TypeLib\ = "{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{BF3DBFF8-1B02-4FA2-8BA3-E05EB3348AA5}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c1858c58a731667a2ddcc802391b69b2fac098afbb8e572084fbbb0aa3aa1d30.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BF3DBFF1-1B02-4FA2-8BA3-E05EB3348AA5}\TypeLib\Version = "1.0"	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2952	regsvr32.exe
2952	regsvr32.exe
2952	regsvr32.exe
2952	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4292 wrote to memory of 2952	4292	regsvr32.exe	84
PID 4292 wrote to memory of 2952	4292	regsvr32.exe	84
PID 4292 wrote to memory of 2952	4292	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\c1858c58a731667a2ddcc802391b69b2fac098afbb8e572084fbbb0aa3aa1d30.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\c1858c58a731667a2ddcc802391b69b2fac098afbb8e572084fbbb0aa3aa1d30.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:2952

Network

MITRE ATT&CK Enterprise v6

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

Windows 7 deprecation

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