fbf40e91716ab1130824e6c8e668185c02202da7554ffd1534ce0fd8ad4064fe

Analysis

max time kernel
93s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20-06-2024 04:32

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General

Target

priam_bho.dll
Size

285KB
MD5

d0e747bba0d8c4b77a174642c0396117
SHA1

9acf3100a833118719234a60ce92fbf85c1e3f57
SHA256

e91dea558ab738b9fc39e70071c057fbd3b6d8ce4639a913422acf3da8957d6a
SHA512

fe43071c9db87a0de62827be2591bc84e1abbe3abcfe59ca1bcc7d8f5b1bee3aa82170a3dd0c56f333814798521330c7f5e5523f206b68315984af27087115ec
SSDEEP

3072:+zbFTVKdJ0ji4eDFFSYONS13Bguk3XnBNvct4hkEmRU59ut2HvkekE42qPb5G1M4:kb5CwCFcYOWxguqBhczEcApenTSL

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\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\ = "Wajam IE BHO"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\NoExplorer = "1"	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}\1.0\ = "wajam 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\InProcServer32\ThreadingModel = "Both"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamDownloader\CurVer\ = "wajam.WajamDownloader.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\InProcServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\priam_bho.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{1FAEE6D5-34F4-42AA-8025-3FD8F3EC4634}\ = "Wajam"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\TypeLib\ = "{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamDownloader	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\TypeLib\ = "{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO\CLSID\ = "{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamDownloader\ = "WajamDownloader Class"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000_Classes\WOW6432Node\Interface	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO.1\ = "Wajam"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamDownloader.1\ = "WajamDownloader Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\priam_bho.DLL\AppID = "{1FAEE6D5-34F4-42AA-8025-3FD8F3EC4634}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\ = "PSFactoryBuffer"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\ProgID\ = "wajam.WajamBHO.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\priam_bho.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\TypeLib	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000_Classes\WOW6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\priam_bho.DLL	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\priam_bho.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamDownloader.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}\ProgID\ = "wajam.WajamDownloader.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\ = "IWajamBHO"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\NumMethods\ = "18"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO\CurVer\ = "wajam.WajamBHO.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{1FAEE6D5-34F4-42AA-8025-3FD8F3EC4634}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamDownloader\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\priam_bho.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}\TypeLib\ = "{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO.1\CLSID\ = "{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO\ = "Wajam"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\VersionIndependentProgID\ = "wajam.WajamBHO"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamBHO\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A7A6995D-6EE1-4FD1-A258-49395D5BF99C}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamDownloader.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\wajam.WajamDownloader.1\CLSID\ = "{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5D64294B-1341-4FE7-B6D8-7C36828D4DD5}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{095BFD3C-4602-4FE1-96F1-AEFAFBFD067D}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{431532BD-0AE1-4ABC-BE8C-919F3D1332E2}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4276 wrote to memory of 3104	4276	regsvr32.exe	82
PID 4276 wrote to memory of 3104	4276	regsvr32.exe	82
PID 4276 wrote to memory of 3104	4276	regsvr32.exe	82

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\priam_bho.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4276
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\priam_bho.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:3104

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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