754e73d783386a99ea36946cb578d34abe841adb9e32c0471711006d3ffeb61b

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25/01/2025, 02:55

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General

Target

VFDInstall.exe
Size

54KB
MD5

bbd5a872f7f1fba57f190708ac817717
SHA1

042b1363929b4bc46bc8bc31c1d64335c0c8209d
SHA256

5473931a9d66c7ef9a908956b9e41ea2a04acda2d1f5d9866042662f4b3c0e88
SHA512

cf86aa506b3cdafd0f9ec83a1171ba23c4a1820bd1d6427b5ebf479e927a8a23979f14ce0ebbec681ee2d1034139df713d4bf6ee28bcffd79cdb49b8f9b5b612
SSDEEP

1536:3LXB65939tY6HBg4sXJZZD5oMS/sRmxz/CXSFCt:3Lk395hYXJZZfFsuGCt

Score

6^/10

adware discovery 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\{625F420E-A4A9-4B40-BC23-716C1C43893A}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{625F420E-A4A9-4B40-BC23-716C1C43893A}\ = "BHO_PROJECT"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{625F420E-A4A9-4B40-BC23-716C1C43893A}\NoExplorer = "1"	regsvr32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	VFDInstall.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 28 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib\ = "{B00FE392-639D-4688-976E-A1BFF368CB96}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bho_project.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib\ = "{B00FE392-639D-4688-976E-A1BFF368CB96}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{186E19A3-B909-4F48-B687-BB81EB8BC7CE}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\bho_project.DLL\AppID = "{186E19A3-B909-4F48-B687-BB81EB8BC7CE}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ = "Ibho_object"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ = "Ibho_object"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\bho_project.DLL	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{186E19A3-B909-4F48-B687-BB81EB8BC7CE}\ = "bho_project"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\HELPDIR	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{3AE26843-9171-4F23-A8E5-5421701276A4}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\ = "bho_project 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B00FE392-639D-4688-976E-A1BFF368CB96}\1.0\0	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 608	2980	VFDInstall.exe	31
PID 2980 wrote to memory of 608	2980	VFDInstall.exe	31
PID 2980 wrote to memory of 608	2980	VFDInstall.exe	31
PID 2980 wrote to memory of 608	2980	VFDInstall.exe	31
PID 2980 wrote to memory of 608	2980	VFDInstall.exe	31
PID 2980 wrote to memory of 608	2980	VFDInstall.exe	31
PID 2980 wrote to memory of 608	2980	VFDInstall.exe	31

C:\Users\Admin\AppData\Local\Temp\VFDInstall.exe
"C:\Users\Admin\AppData\Local\Temp\VFDInstall.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2980
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32 /s "bho_project.dll"
  2⤵
  - Installs/modifies Browser Helper Object
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:608

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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