cc03848a4549861a4c40e4cca8856ef8fe8525987a5c100f7e4668bda984809d

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
06/01/2024, 06:31

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General

Target

458741d581bc5b7f1b4d1299c6b5389f.dll
Size

116KB
MD5

458741d581bc5b7f1b4d1299c6b5389f
SHA1

4f9271e26a6b7de5058f995fe6ea61a408594805
SHA256

cc03848a4549861a4c40e4cca8856ef8fe8525987a5c100f7e4668bda984809d
SHA512

99b31fee192af294fd472c50fca8f6edc9886f70226bd2a6ba9f04853cfc8697ef9d8182dcf81a71137d0b2536a60f4a5e38fd476fc9408a4bdd755de9a9506b
SSDEEP

3072:e49bhTizc8ocLJ55VzdRl4o/zFGdewQ90qU1Ddqb/RH:e49bF25bzBz/EdeSjDu5

Score

6^/10

persistence

Malware Config

Signatures

Modifies WinLogon 2 TTPs 7 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\458741d581bc5b7f1b4d1299c6b5389f\Startup = "WlxStartupEvent"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\458741d581bc5b7f1b4d1299c6b5389f\Shutdown = "WlxShutdownEvent"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\458741d581bc5b7f1b4d1299c6b5389f\Impersonate = "0"	rundll32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\458741d581bc5b7f1b4d1299c6b5389f\Asynchronous = "0"	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\458741d581bc5b7f1b4d1299c6b5389f	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\458741d581bc5b7f1b4d1299c6b5389f\DllName = "C:\\Users\\Admin\\AppData\\Local\\Temp\\458741d581bc5b7f1b4d1299c6b5389f.dll"	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ctl3pack.exe	rundll32.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1800	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 1800	2504	rundll32.exe	28
PID 2504 wrote to memory of 1800	2504	rundll32.exe	28
PID 2504 wrote to memory of 1800	2504	rundll32.exe	28
PID 2504 wrote to memory of 1800	2504	rundll32.exe	28
PID 2504 wrote to memory of 1800	2504	rundll32.exe	28
PID 2504 wrote to memory of 1800	2504	rundll32.exe	28
PID 2504 wrote to memory of 1800	2504	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\458741d581bc5b7f1b4d1299c6b5389f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\458741d581bc5b7f1b4d1299c6b5389f.dll,#1
  2⤵
  - Modifies WinLogon
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:1800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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