a9b3aa5d96e3e3069c38d58a30c47476a32c2b2edcbdfc3e4113840fc214cd42

Analysis

max time kernel
151s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
30/11/2022, 23:39

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General

Target

a9b3aa5d96e3e3069c38d58a30c47476a32c2b2edcbdfc3e4113840fc214cd42.dll
Size

523KB
MD5

dff6bfd606887c2d58d9397e6aeca050
SHA1

e3f152cd0c3102d816aa7d4e258539b536e48451
SHA256

a9b3aa5d96e3e3069c38d58a30c47476a32c2b2edcbdfc3e4113840fc214cd42
SHA512

75d582a0f49dd69883596856576a53cd0556b9ef72219d08cba7d97da73c9905a704491d78af9043a48d0ad4e008de731662ebbe137ae6ca1730ab4f27a828d5
SSDEEP

384:3qVNjtU2+3inzCh3h+G/d077jSJABzK/4O5Xoh5zBV/kV/QDtSmb:6VAuqPd0XYJwCo/BV/kpQ1

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\{6C648541-1025-9650-9057-6541258720C6}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{6C648541-1025-9650-9057-6541258720C6}\ = "mndhfdwd.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\{6C648541-1025-9650-9057-6541258720C6}\InprocServer32	rundll32.exe
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\{6C648541-1025-9650-9057-6541258720C6}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6C648541-1025-9650-9057-6541258720C6}\InprocServer32\ = "C:\\Windows\\SysWow64\\mndhfdwd.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{6C648541-1025-9650-9057-6541258720C6}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1880	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1880	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 1880	1884	rundll32.exe	27
PID 1884 wrote to memory of 1880	1884	rundll32.exe	27
PID 1884 wrote to memory of 1880	1884	rundll32.exe	27
PID 1884 wrote to memory of 1880	1884	rundll32.exe	27
PID 1884 wrote to memory of 1880	1884	rundll32.exe	27
PID 1884 wrote to memory of 1880	1884	rundll32.exe	27
PID 1884 wrote to memory of 1880	1884	rundll32.exe	27
PID 1880 wrote to memory of 1696	1880	rundll32.exe	28
PID 1880 wrote to memory of 1696	1880	rundll32.exe	28
PID 1880 wrote to memory of 1696	1880	rundll32.exe	28
PID 1880 wrote to memory of 1696	1880	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a9b3aa5d96e3e3069c38d58a30c47476a32c2b2edcbdfc3e4113840fc214cd42.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a9b3aa5d96e3e3069c38d58a30c47476a32c2b2edcbdfc3e4113840fc214cd42.dll,#1
  2⤵
  - Installs/modifies Browser Helper Object
  - Drops file in System32 directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1880
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\~DFD7081446.bat
    3⤵
    PID:1696

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

C:\Users\Admin\AppData\Local\Temp\~DFD7081446.bat

Filesize
121B

MD5
09517fc62284f33e877a276463580bd1

SHA1
0b14fe1db4493818f9de0bf2a56ee5370b8d479a

SHA256
6cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238

SHA512
1b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d

Download Submit
memory/1880-55-0x0000000075201000-0x0000000075203000-memory.dmp

Filesize
8KB

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