Analysis
- max time kernel
150s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
29/02/2024, 16:27
Behavioral task
behavioral1
Sample
aef69e9ab20e9d0512c01b7d74e20255.dll
Resource
win7-20240221-en
windows7-x64
4 signatures
150 seconds
General
- Target aef69e9ab20e9d0512c01b7d74e20255.dll
- Size 85KB
- Sample240229-tyhfcaeh27
- SHA256 ad3e8841beb7ba3beaa91616f5eeed7c7bb478105cce23fc3e2d0f56a33503bf
- MD5 aef69e9ab20e9d0512c01b7d74e20255
- SHA1 6b2b2b57a2e764504fdda5c176796dfa2ea0bc73
- SHA512 49c55a45821908cbe8118b92375954ffdcb208a1b5085541234ae427399a8ed4685afa89eb368e351daa5451b292c2a05033d692e236c7509b9d60cc744ed1c9
- SSDEEP 768:QJal/8ohTj7Irb2rkDPrXpAbbJbYCc0bVB18ibvC1Kf1NS2lsNYpdljuVT7l5VwD:a2xK2APrXKbfJRX8ib6A1vlsQlAT7R
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Installs/modifies Browser Helper Object 2 TTPs 1 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1451E202-0E77-416C-B1FA-4213912BFC2C} regsvr32.exe - Modifies registry class 42 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\ = "IEHlprObj Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\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\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\ = "IIEHlprObj" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\TypeLib\ = "{1451E208-0E77-416C-B1FA-4213912BFC2C}" 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\{1451E202-0E77-416C-B1FA-4213912BFC2C}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0\ = "IEHelper 1.0 Type Library" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\ = "IIEHlprObj" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\aef69e9ab20e9d0512c01b7d74e20255.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C}\ProgID\ = "IEHlprObj.IEHlprObj.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj\ = "IEHlprObj Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C}\VersionIndependentProgID\ = "IEHlprObj.IEHlprObj" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\TypeLib\ = "{1451E208-0E77-416C-B1FA-4213912BFC2C}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1451E201-0E77-416C-B1FA-4213912BFC2C}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1\CLSID\ = "{1451E202-0E77-416C-B1FA-4213912BFC2C}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\IEHlprObj.IEHlprObj.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C}\ = "IEHlprObj Class" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1451E202-0E77-416C-B1FA-4213912BFC2C}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\aef69e9ab20e9d0512c01b7d74e20255.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{1451E208-0E77-416C-B1FA-4213912BFC2C}\1.0\0\win32 regsvr32.exe - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2980 regsvr32.exe 2980 regsvr32.exe 2980 regsvr32.exe 2980 regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2324 wrote to memory of 2980 2324 regsvr32.exe 88 PID 2324 wrote to memory of 2980 2324 regsvr32.exe 88 PID 2324 wrote to memory of 2980 2324 regsvr32.exe 88
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\aef69e9ab20e9d0512c01b7d74e20255.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2324 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\aef69e9ab20e9d0512c01b7d74e20255.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:2980
-