5d127a38e613f07bfc80240d1a0e1ad9c1befd974ec50abae7302f4f66ab13bd

Analysis

max time kernel
140s
max time network
121s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
05-01-2024 11:44

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General

Target

43797e7896aba0cdb8adc48e5f9af6fd.exe
Size

46KB
MD5

43797e7896aba0cdb8adc48e5f9af6fd
SHA1

a1033d0b68d0eba3ae0518b81bf44f66c967c4d8
SHA256

5d127a38e613f07bfc80240d1a0e1ad9c1befd974ec50abae7302f4f66ab13bd
SHA512

2cab895deb4733f305e23be426a672e0842b0939148f5ef43c51126ae553321fb4d96093368a9e44dcd6ab0720ae4c0937c5bd82a3a1771bc3b5ef3f242b8966
SSDEEP

768:Qjq8bA/wdTnVPJzccqsE123EwLxg6gqVPqZ9K/CTE4S4QOFmIfDbzcPU:QWb/wVnhecqsv02g6gqVPqw/JCbc

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\\ntos.exe,"	43797e7896aba0cdb8adc48e5f9af6fd.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	43797e7896aba0cdb8adc48e5f9af6fd.exe
File created	C:\Windows\SysWOW64\ntos.exe	43797e7896aba0cdb8adc48e5f9af6fd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1372	43797e7896aba0cdb8adc48e5f9af6fd.exe
1372	43797e7896aba0cdb8adc48e5f9af6fd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1372	43797e7896aba0cdb8adc48e5f9af6fd.exe

C:\Users\Admin\AppData\Local\Temp\43797e7896aba0cdb8adc48e5f9af6fd.exe
"C:\Users\Admin\AppData\Local\Temp\43797e7896aba0cdb8adc48e5f9af6fd.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1372

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

Replay Monitor

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Downloads

memory/1372-2-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1372-1-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1372-0-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1372-7-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download