0499a88cacaa4becef78439f7a9c783573234350ef7a28a15652d9f486c7758a

Analysis

max time kernel
141s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
06/03/2024, 17:12

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General

Target

b7ef810b0d6f4f0adb71b98e3a710ac0.exe
Size

53KB
MD5

b7ef810b0d6f4f0adb71b98e3a710ac0
SHA1

9fc56350b2cc07afec7ed1b3a0e922c3a0d358dd
SHA256

0499a88cacaa4becef78439f7a9c783573234350ef7a28a15652d9f486c7758a
SHA512

d6b47048b4483ec2876fda7c7f80cb582de027f8fe1d76761d961fe4619df8e11e392216d563cf437cc6367079fac9cec69c637fce4eb45cf1393e5bb8a7baf0
SSDEEP

768:6JvOR3dh3XUZaotCu7agzPcQ1CFX42AOAzkVfckbPdXiUJ8XQLD7H6hDmmo6Orhp:6U3ALCulPck0NO4VfZbYMl71mOFQ9E

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,"	b7ef810b0d6f4f0adb71b98e3a710ac0.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	b7ef810b0d6f4f0adb71b98e3a710ac0.exe
File created	C:\Windows\SysWOW64\ntos.exe	b7ef810b0d6f4f0adb71b98e3a710ac0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2068	b7ef810b0d6f4f0adb71b98e3a710ac0.exe
2068	b7ef810b0d6f4f0adb71b98e3a710ac0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2068	b7ef810b0d6f4f0adb71b98e3a710ac0.exe

C:\Users\Admin\AppData\Local\Temp\b7ef810b0d6f4f0adb71b98e3a710ac0.exe
"C:\Users\Admin\AppData\Local\Temp\b7ef810b0d6f4f0adb71b98e3a710ac0.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2068

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/2068-0-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2068-1-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2068-6-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download