28d1eec40a617e68d70f15833983252c5e29a8ce72a3a36a700091d48f44c95e

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29/01/2024, 01:45

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General

Target

7e8d5d3fcb1152442e4ac84b75f45ecd.dll
Size

47KB
MD5

7e8d5d3fcb1152442e4ac84b75f45ecd
SHA1

1728ad793520ae597f5d036c2de6b2469362896f
SHA256

28d1eec40a617e68d70f15833983252c5e29a8ce72a3a36a700091d48f44c95e
SHA512

31604b2d3a3e09928ab114028ac03ef89ba65db0c3632d5a290b5e5fefeaff58fe068a3ce991d58d7aedf421f0adbde494bbbb86916f1c33936d7433d47d64f1
SSDEEP

768:v7mTx4fNHWkhrbYCXFsiNHrBDfXsroKLc4CoX7T7lub8iSQowS+:vSTAVhrkqRNHrBDfXsrJC2b0bSQo

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 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\Userinit = "userinit.exe,C:\\Windows\\system32\\msvcrty.exe"	rundll32.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2656	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 2656	2484	rundll32.exe	28
PID 2484 wrote to memory of 2656	2484	rundll32.exe	28
PID 2484 wrote to memory of 2656	2484	rundll32.exe	28
PID 2484 wrote to memory of 2656	2484	rundll32.exe	28
PID 2484 wrote to memory of 2656	2484	rundll32.exe	28
PID 2484 wrote to memory of 2656	2484	rundll32.exe	28
PID 2484 wrote to memory of 2656	2484	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\7e8d5d3fcb1152442e4ac84b75f45ecd.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\7e8d5d3fcb1152442e4ac84b75f45ecd.dll,#1
  2⤵
  - Modifies WinLogon for persistence
  - Blocklisted process makes network request
  PID:2656

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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