f784c74492c1edc0d33ab04c2d921642348f1584f5e982f17f799d7a2193b420

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
29/12/2023, 18:33

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General

Target

0092a141e81e076a34d1432f81ab18ec.dll
Size

521KB
MD5

0092a141e81e076a34d1432f81ab18ec
SHA1

ca63bddf2edbb029297c2ac548b54a7109246f0e
SHA256

f784c74492c1edc0d33ab04c2d921642348f1584f5e982f17f799d7a2193b420
SHA512

459e3e3290fa5a87906a9c8c58f5f606afbd2b5ad2c9c1767f29d2d9059ecde34b91ae40f15f6f901fa559a13daafda48d42d4525aa7aace72da005b66c63209
SSDEEP

384:dOr5NKZ21y4hW5N2fM0WngJZ568MEL6BcEtePDXuzdxJqYYvST/:kr5T8N2fMD+f68M8LudxSq

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

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{428DF602-9541-A985-210A-984A698C6F24}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{428DF602-9541-A985-210A-984A698C6F24}\ = "ptjhdhlp.dll"	rundll32.exe

Drops file in System32 directory 1 IoCs

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

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{428DF602-9541-A985-210A-984A698C6F24}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{428DF602-9541-A985-210A-984A698C6F24}\InprocServer32\ = "C:\\Windows\\SysWow64\\ptjhdhlp.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{428DF602-9541-A985-210A-984A698C6F24}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{428DF602-9541-A985-210A-984A698C6F24}\InprocServer32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3136	rundll32.exe
3136	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3484 wrote to memory of 3136	3484	rundll32.exe	88
PID 3484 wrote to memory of 3136	3484	rundll32.exe	88
PID 3484 wrote to memory of 3136	3484	rundll32.exe	88
PID 3136 wrote to memory of 4596	3136	rundll32.exe	89
PID 3136 wrote to memory of 4596	3136	rundll32.exe	89
PID 3136 wrote to memory of 4596	3136	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0092a141e81e076a34d1432f81ab18ec.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\0092a141e81e076a34d1432f81ab18ec.dll,#1
  2⤵
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3136
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240600125.bat
    3⤵
    PID:4596

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\~DFD240600125.bat

Filesize
121B

MD5
09517fc62284f33e877a276463580bd1

SHA1
0b14fe1db4493818f9de0bf2a56ee5370b8d479a

SHA256
6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238

SHA512
1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d

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