a8bf51a814beb7abd9cbff9cd923c299ada603916f3b8c579cab454de671d5fe

Analysis

max time kernel
154s
max time network
177s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 07:18

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General

Target

a8bf51a814beb7abd9cbff9cd923c299ada603916f3b8c579cab454de671d5fe.dll
Size

49KB
MD5

67ebe5a7b9951331b7092f8bceb3dd13
SHA1

3ef8ded2d6077ef3f55feb8245b4a8cb4e93d7fe
SHA256

a8bf51a814beb7abd9cbff9cd923c299ada603916f3b8c579cab454de671d5fe
SHA512

f6607bcd9188e6d8c855aa4b81d1257ee1c5cedcdbd8784c61eb353d4ec3566d2774888f3db17228fbb7f42ad612b59c45ec225357b1ff95c1ab72ee20bb4e21
SSDEEP

768:syUqhmQIIsDZgnswpFz9Y18Q4SnAghSBEkzlfjjD2GmCDH3lZ:rUqhmQrepgFxY182h+jyGmM

Score

6^/10

persistence

Malware Config

Signatures

Modifies WinLogon 2 TTPs 8 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\mdhcp32\Shutdown = "WinOff2EX"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\mdhcp32\Asynchronous = "1"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\mdhcp32\Impersonate = "0"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\mdhcp32	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\mdhcp32\DllName = "mdhcp32.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\mdhcp32\Startup = "WinStart2EX"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\mdhcp32\Logoff = "WinOff2EX"	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 916 wrote to memory of 620	916	rundll32.exe	rundll32.exe
PID 916 wrote to memory of 620	916	rundll32.exe	rundll32.exe
PID 916 wrote to memory of 620	916	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a8bf51a814beb7abd9cbff9cd923c299ada603916f3b8c579cab454de671d5fe.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:916

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a8bf51a814beb7abd9cbff9cd923c299ada603916f3b8c579cab454de671d5fe.dll,#1
2⤵
- Modifies WinLogon
PID:620

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/620-132-0x0000000000000000-mapping.dmp

Download
memory/620-133-0x00000000007C0000-0x00000000007D2000-memory.dmp

Filesize
72KB

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