cdc496a1bc0c2b99e7e267a51937e1b5191eab820e8985742b746c361b35be6c

Analysis

max time kernel
135s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/12/2022, 07:14

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General

Target

cdc496a1bc0c2b99e7e267a51937e1b5191eab820e8985742b746c361b35be6c.dll
Size

150KB
MD5

44cd3b5529f074b2baa39c5ac6f0748a
SHA1

10775048a2fe7c96107b353afa7cdb8a07187585
SHA256

cdc496a1bc0c2b99e7e267a51937e1b5191eab820e8985742b746c361b35be6c
SHA512

284a1c65f29b3f6fdd2dba9b1fa0de313e91143a1fbdc59b77d4bea53cba8a6148c2362431bde6f65cea0daeb8df73ff2482383bf98dc89171f2140cd9da6acb
SSDEEP

3072:28UWFHc46dYAaL3qHdkPh8DTe8LT1pfi3O9ZbVvjN8kj:28bFHcuLaHdqem8fiqVvjNTj

Score

9^/10

adware stealer upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0006000000022e5f-134.dat	acprotect
behavioral2/files/0x0006000000022e5f-135.dat	acprotect

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4088-133-0x0000000010000000-0x0000000010053000-memory.dmp	upx
behavioral2/files/0x0006000000022e5f-134.dat	upx
behavioral2/files/0x0006000000022e5f-135.dat	upx
behavioral2/memory/4088-136-0x00000000011C0000-0x00000000011E3000-memory.dmp	upx
behavioral2/memory/4088-137-0x00000000011C0000-0x00000000011E3000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
4088	rundll32.exe
4088	rundll32.exe

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\{9ED33AC7-9872-464F-AFD7-C44412921BE8}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\ = "Windows Web AntiVirus"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\NoExplorer = "1"	rundll32.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\nbwebsafe.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\tb.ico	rundll32.exe
File created	C:\Windows\SysWOW64\tb.ico	rundll32.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 17 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{96042B05-41F5-4344-BEE3-500478CE82F8}\DisplayName = "ÔÚ´ËËÑË÷..."	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{96042B05-41F5-4344-BEE3-500478CE82F8}\Codepage = "65001"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\Enabled = "0"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\SearchScopes	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\Version = "1"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\PopupsUseNewWindow = "1"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\ShortcutBehavior = "0"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\DefaultScope = "{96042B05-41F5-4344-BEE3-500478CE82F8}"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\SearchScopes\{96042B05-41F5-4344-BEE3-500478CE82F8}\URL = "http://www.baidu.com/baidu?tn=nbmagician_ql&word={searchTerms}&cl=3&ie=utf-8"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Check_Associations = "no"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\WarnOnClose = "0"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\UseHomepageForNewTab = "1"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\Check_Associations = "no"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\SearchScopes\{96042B05-41F5-4344-BEE3-500478CE82F8}	rundll32.exe

Modifies registry class 51 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO.1	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO.1\ = "Windows Web AntiVirus"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO\ = "Windows Web AntiVirus"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO\CurVer	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\ = "Windows Web AntiVirus"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\ProgID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\VersionIndependentProgID	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0\0\win32\ = "C:\\Windows\\SysWow64\\nbwebsafe.dll"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{59CE604A-1C58-4E6F-9F49-9C14F5FA2FDD}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO.1\CLSID\ = "{9ED33AC7-9872-464F-AFD7-C44412921BE8}"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO\CLSID\ = "{9ED33AC7-9872-464F-AFD7-C44412921BE8}"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO\CurVer\ = "BillBoard.BillBoardBHO.1"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\ProxyStubClsid32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\TypeLib\ = "{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\TypeLib\Version = "1.0"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\ProgID\ = "BillBoard.BillBoardBHO.1"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\AppID = "{59CE604A-1C58-4E6F-9F49-9C14F5FA2FDD}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0\0	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0\HELPDIR	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\ = "IBillBoardBHO"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\TypeLib	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\ = "IBillBoardBHO"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\InprocServer32\ = "C:\\Windows\\SysWow64\\nbwebsafe.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\TypeLib\ = "{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO.1\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\Programmable	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\TypeLib\Version = "1.0"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\ProxyStubClsid32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0\ = "BillBoard 1.0 ÀàÐÍ¿â"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0\HELPDIR\ = "C:\\Windows\\SysWow64\\"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\TypeLib\ = "{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{59CE604A-1C58-4E6F-9F49-9C14F5FA2FDD}\ = "AntiVirus"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\AntiVirus.DLL	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\BillBoard.BillBoardBHO\CLSID	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\VersionIndependentProgID\ = "BillBoard.BillBoardBHO"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9ED33AC7-9872-464F-AFD7-C44412921BE8}\TypeLib	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0\FLAGS\ = "0"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0\0\win32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\TypeLib	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\AntiVirus.DLL\AppID = "{59CE604A-1C58-4E6F-9F49-9C14F5FA2FDD}"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{2EE49CEB-2DD3-40E8-AD1E-D17E9DAB65F6}\1.0\FLAGS	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{D0852560-5F8B-472B-B1E1-1CEEECFAF9ED}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1424 wrote to memory of 4088	1424	rundll32.exe	79
PID 1424 wrote to memory of 4088	1424	rundll32.exe	79
PID 1424 wrote to memory of 4088	1424	rundll32.exe	79

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdc496a1bc0c2b99e7e267a51937e1b5191eab820e8985742b746c361b35be6c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1424
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cdc496a1bc0c2b99e7e267a51937e1b5191eab820e8985742b746c361b35be6c.dll,#1
  2⤵
  - Loads dropped DLL
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies Internet Explorer settings
  - Modifies registry class
  PID:4088

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\nbwebsafe.dll

Filesize
52KB

MD5
d96891279495d565ba852b6615070316

SHA1
a9612a47959124f1242278bb89b37a7c568125aa

SHA256
7fd7dac892255b440672854730295b3ca69faefc600715a44ab930d7584fca00

SHA512
0ed55d9270645c66ae84ae1d13a542b669c0bd5f7068f2db19c60ea880c6a4b25f708671027cc70a69233ae2af5c4d7f312c34d6bf471d81671f65cd05247448

Download Submit
C:\Windows\SysWOW64\nbwebsafe.dll

Filesize
52KB

MD5
d96891279495d565ba852b6615070316

SHA1
a9612a47959124f1242278bb89b37a7c568125aa

SHA256
7fd7dac892255b440672854730295b3ca69faefc600715a44ab930d7584fca00

SHA512
0ed55d9270645c66ae84ae1d13a542b669c0bd5f7068f2db19c60ea880c6a4b25f708671027cc70a69233ae2af5c4d7f312c34d6bf471d81671f65cd05247448

Download Submit
memory/4088-133-0x0000000010000000-0x0000000010053000-memory.dmp

Filesize
332KB

Download
memory/4088-136-0x00000000011C0000-0x00000000011E3000-memory.dmp

Filesize
140KB

Download
memory/4088-137-0x00000000011C0000-0x00000000011E3000-memory.dmp

Filesize
140KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads