d99dd7ef86e410fe43c5d292ced64524e46ba4c1316b5043069b1b4bc7d18077

Analysis

max time kernel
141s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 14:44

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General

Target

3a349349dca927f2a00399386df7c255.exe
Size

46KB
MD5

3a349349dca927f2a00399386df7c255
SHA1

be6667c7bda954bc5bd309a78c5adf17c65ef8c4
SHA256

d99dd7ef86e410fe43c5d292ced64524e46ba4c1316b5043069b1b4bc7d18077
SHA512

4e92fcbc3c5ccd54cf769c0151818be3bf85130c126a780cbb572aa1c25dc730d9146d9a46e4460a98250026956362845f86d89f2cc1e4acb7fc4d0cb1e94d94
SSDEEP

768:PJ4uaYLNkn+6A6Xuzil7QV6lvCDoLElVVbynScSxQGSq9W2Un04e5DtAdM0o:FRxkn+6Ru+7QVDDoLEXhynmr9W2Un0t3

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,"	3a349349dca927f2a00399386df7c255.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\ntos.exe	3a349349dca927f2a00399386df7c255.exe
File created	C:\Windows\SysWOW64\ntos.exe	3a349349dca927f2a00399386df7c255.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3032	3a349349dca927f2a00399386df7c255.exe
3032	3a349349dca927f2a00399386df7c255.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	3a349349dca927f2a00399386df7c255.exe

C:\Users\Admin\AppData\Local\Temp\3a349349dca927f2a00399386df7c255.exe
"C:\Users\Admin\AppData\Local\Temp\3a349349dca927f2a00399386df7c255.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3032

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/3032-0-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3032-1-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3032-4-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download