f85544dc54d06caa843a8f4c7ab3047828f0023be63b6ec4b9ef402f04682be8

Analysis

max time kernel
39s
max time network
44s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03/10/2022, 00:25 UTC

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General

Target

f85544dc54d06caa843a8f4c7ab3047828f0023be63b6ec4b9ef402f04682be8.dll
Size

107KB
MD5

4e511b54283ab37484c2d7ca46bcff50
SHA1

a087e6b98a90b2b94f4234a668e0dbf74d01f1bd
SHA256

f85544dc54d06caa843a8f4c7ab3047828f0023be63b6ec4b9ef402f04682be8
SHA512

dc293a6960f52b68d39ea50ef6a35c30d64a45758febada20dff92095136c9931e22ccfbbf2442b649acbb5170624f0e1c1735e21f3d6d9232617c0ac8452616
SSDEEP

3072:Yur+QqjIC5KdKqoDayYmAr8iaETpCzpzJtEIw1P:FKt+p8DYmW8iaET8z+Iw1

Score

8^/10

adware stealer upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2032-57-0x0000000010000000-0x0000000010041000-memory.dmp	upx

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\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 5 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\New Windows\PopupMgr = "no"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_ERROR_CACHE\CheckedValue = "yes"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_ERROR_CACHE\DefaultValue = "yes"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\AdvancedOptions\BROWSE\SCRIPT_ERROR_CACHE\UncheckedValue = "no"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\Error Dlg Displayed On Every Error = "no"	regsvr32.exe

Modifies registry class 41 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav\ = "Nav Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\0\win32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ = "INav"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav.1\CLSID\ = "{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav\CLSID\ = "{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib\ = "{40195CA5-4EA4-4B10-88B3-5659A0A5310B}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\ProgID\ = "Urlnav.Nav.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\VersionIndependentProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f85544dc54d06caa843a8f4c7ab3047828f0023be63b6ec4b9ef402f04682be8.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ = "INav"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib\ = "{40195CA5-4EA4-4B10-88B3-5659A0A5310B}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\ = "Nav Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\VersionIndependentProgID\ = "Urlnav.Nav"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\FLAGS\ = "0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f85544dc54d06caa843a8f4c7ab3047828f0023be63b6ec4b9ef402f04682be8.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav.1\ = "Nav Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{9A4DDA61-1D3A-49B7-9849-DAC6CD30A393}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{40195CA5-4EA4-4B10-88B3-5659A0A5310B}\1.0\ = "urlnav 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Urlnav.Nav.1	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\Interface\{ED2676C8-F22C-4E60-9812-E2851B2AD210}\TypeLib\Version = "1.0"	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 2032	1088	regsvr32.exe	26
PID 1088 wrote to memory of 2032	1088	regsvr32.exe	26
PID 1088 wrote to memory of 2032	1088	regsvr32.exe	26
PID 1088 wrote to memory of 2032	1088	regsvr32.exe	26
PID 1088 wrote to memory of 2032	1088	regsvr32.exe	26
PID 1088 wrote to memory of 2032	1088	regsvr32.exe	26
PID 1088 wrote to memory of 2032	1088	regsvr32.exe	26

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f85544dc54d06caa843a8f4c7ab3047828f0023be63b6ec4b9ef402f04682be8.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1088
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\f85544dc54d06caa843a8f4c7ab3047828f0023be63b6ec4b9ef402f04682be8.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:2032

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

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Downloads

memory/1088-54-0x000007FEFC431000-0x000007FEFC433000-memory.dmp

Filesize
8KB

Download
memory/2032-56-0x0000000076681000-0x0000000076683000-memory.dmp

Filesize
8KB

Download
memory/2032-57-0x0000000010000000-0x0000000010041000-memory.dmp

Filesize
260KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads

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