19a67fd12fd64cbf9811147ef0b993d7a2acad994a26863d4126e85c4cf22fd0

Analysis

max time kernel
162s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 14:52

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General

Target

19a67fd12fd64cbf9811147ef0b993d7a2acad994a26863d4126e85c4cf22fd0.dll
Size

49KB
MD5

eafcce13121f24e6e9f0e397299b1b64
SHA1

f1f8a7f1c00685a705dafefa6c61718272b9cf86
SHA256

19a67fd12fd64cbf9811147ef0b993d7a2acad994a26863d4126e85c4cf22fd0
SHA512

f8e9af1d63fc5b2c7a7d785d385402dfa534905dbd0fc14230dd295d94fb44ff464f26f24b151166d8014ff89f559aecba6088c22cb6d30b5b6cb4a916471819
SSDEEP

1536:rUqhmQry2xUOXnNOq92na9McFsvh2zKkC3zoSeVC:Zmo+On9jiYOkC30SeVC

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
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
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

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 5036 wrote to memory of 1200	5036	rundll32.exe	rundll32.exe
PID 5036 wrote to memory of 1200	5036	rundll32.exe	rundll32.exe
PID 5036 wrote to memory of 1200	5036	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\19a67fd12fd64cbf9811147ef0b993d7a2acad994a26863d4126e85c4cf22fd0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5036

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\19a67fd12fd64cbf9811147ef0b993d7a2acad994a26863d4126e85c4cf22fd0.dll,#1
2⤵
- Modifies WinLogon
PID:1200

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

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

memory/1200-132-0x0000000000000000-mapping.dmp

Download
memory/1200-133-0x00000000005E0000-0x00000000005F2000-memory.dmp

Filesize
72KB

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