48eda05ebc3353d6a9386a9796a76c42395caa2ab9894936ee59484b17369fbf

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
15/07/2024, 05:15

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General

Target

wit4ie.dll
Size

210KB
MD5

6b4513d6395fc100d3bf98f3428286f2
SHA1

321ae2a5298f79c6f27ef99c4a4c913c4284d31f
SHA256

ac3f100228ea22017c2bf09796a046bbd3710cc3fa843b5ebc46a94d9d9bd2b0
SHA512

14a7b9ad09b45c6b5c13246dbedcf0915468dce26ced5851fe7d09c495812ae3cccee51d9716ef76e8a22423b32f31cc489f644dd904bafead257dea0618c9f2
SSDEEP

3072:M2MyXOs+ehSVySe6IyvDelAzaZXrRSakxtUKgDVotxiwiQpUhaMuyIxA0kKU:6yL0VV7u3bwakkKgDVoPiwwa9A+

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\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\ = "wit for ie"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 50 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{20EDC024-43C5-423E-B7F5-FD93523E0D9F}\ = "wit4ie"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\wit4ie.DLL	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO\CurVer	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\ = "IWitBHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\TypeLib\ = "{E7767193-0A2F-4AFE-BAF4-288366162E48}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO\ = "WitBHO Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\TypeLib\ = "{E7767193-0A2F-4AFE-BAF4-288366162E48}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO.1\CLSID\ = "{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\wit4ie.DLL\AppID = "{20EDC024-43C5-423E-B7F5-FD93523E0D9F}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO\CLSID\ = "{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\ = "WitBHO Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\VersionIndependentProgID\ = "wit4ie.WitBHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{20EDC024-43C5-423E-B7F5-FD93523E0D9F}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO\CurVer\ = "wit4ie.WitBHO.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wit4ie.WitBHO.1\ = "WitBHO Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\ = "IWitBHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\TypeLib\ = "{E7767193-0A2F-4AFE-BAF4-288366162E48}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\ProgID\ = "wit4ie.WitBHO.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{75ED56AF-4DC9-4243-A30C-4EF4DD0CA28F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wit4ie.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wit4ie.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0\ = "wit4ie 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{E7767193-0A2F-4AFE-BAF4-288366162E48}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{9732E648-5755-43ED-9003-9E835D22CFE7}	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 2976	2880	regsvr32.exe	30
PID 2880 wrote to memory of 2976	2880	regsvr32.exe	30
PID 2880 wrote to memory of 2976	2880	regsvr32.exe	30
PID 2880 wrote to memory of 2976	2880	regsvr32.exe	30
PID 2880 wrote to memory of 2976	2880	regsvr32.exe	30
PID 2880 wrote to memory of 2976	2880	regsvr32.exe	30
PID 2880 wrote to memory of 2976	2880	regsvr32.exe	30

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\wit4ie.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\wit4ie.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:2976

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

Windows 7 deprecation

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