3196909c4f6c414e4eeadf81e99e4d86a2f2f863662f8b130a5943e1b30934f3

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 16:51

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General

Target

7503d2700a8191ea07b21bc7077e6fc9.dll
Size

522KB
MD5

7503d2700a8191ea07b21bc7077e6fc9
SHA1

1c3b6f627ab4eac7b3cfd7b73a4abb40f9a9711f
SHA256

3196909c4f6c414e4eeadf81e99e4d86a2f2f863662f8b130a5943e1b30934f3
SHA512

7e37042641a08374fb8b1325c1d9114c2c8d89f244ed2593130fbfb3d1df32ddecdc49aa1c98291d566d2650ae3a58c777e628d097a93d082c97d300266918f4
SSDEEP

384:iOr5NKZ2kKQeOwf1N6OQZMvG0yZDMX0xZG6zdBJCYYPR:5r5Oqf76OQ0yZdRdBi

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{528DF602-9541-A985-210A-984A698C6F25}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{528DF602-9541-A985-210A-984A698C6F25}\ = "ptjhehlp.dll"	rundll32.exe

Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\verclsid.exe rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\verclsid.exe	rundll32.exe

Modifies registry class 6 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{528DF602-9541-A985-210A-984A698C6F25}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{528DF602-9541-A985-210A-984A698C6F25}\InprocServer32\ = "C:\\Windows\\SysWow64\\ptjhehlp.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{528DF602-9541-A985-210A-984A698C6F25}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{528DF602-9541-A985-210A-984A698C6F25}\InprocServer32	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

rundll32.exe

pid process

1248 rundll32.exe

pid	process
1248	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2996 wrote to memory of 1248	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 1248	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 1248	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 1248	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 1248	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 1248	2996	rundll32.exe	rundll32.exe
PID 2996 wrote to memory of 1248	2996	rundll32.exe	rundll32.exe
PID 1248 wrote to memory of 2984	1248	rundll32.exe	cmd.exe
PID 1248 wrote to memory of 2984	1248	rundll32.exe	cmd.exe
PID 1248 wrote to memory of 2984	1248	rundll32.exe	cmd.exe
PID 1248 wrote to memory of 2984	1248	rundll32.exe	cmd.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7503d2700a8191ea07b21bc7077e6fc9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2996

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7503d2700a8191ea07b21bc7077e6fc9.dll,#1
2⤵
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1248

C:\Windows\SysWOW64\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\~DFD259416714.bat
3⤵
PID:2984

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\~DFD259416714.bat
Filesize
121B

MD5
09517fc62284f33e877a276463580bd1

SHA1
0b14fe1db4493818f9de0bf2a56ee5370b8d479a

SHA256
6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238

SHA512
1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads