Malware Analysis Report

2024-08-06 14:45

Sample ID 240626-w5df3szcrm
Target Sena.exe
SHA256 6692ae7b22a57bff5df25a90c397e5c1251f1749545bf194026e72dd991d371c
Tags
nanocore evasion keylogger persistence spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

6692ae7b22a57bff5df25a90c397e5c1251f1749545bf194026e72dd991d371c

Threat Level: Known bad

The file Sena.exe was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

Nanocore family

NanoCore

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Program Files directory

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-26 18:29

Signatures

Nanocore family

nanocore

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 18:29

Reported

2024-06-26 18:30

Platform

win7-20240220-en

Max time kernel

23s

Max time network

29s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Sena.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\TCP Subsystem\tcpss.exe C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
File opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Sena.exe

"C:\Users\Admin\AppData\Local\Temp\Sena.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 senaclient.ddns.net udp
US 74.137.248.199:4338 senaclient.ddns.net tcp
US 8.8.8.8:53 senaclient.ddns.net udp
US 74.137.248.199:4338 senaclient.ddns.net tcp

Files

memory/2308-0-0x0000000074BC1000-0x0000000074BC2000-memory.dmp

memory/2308-1-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2308-2-0x0000000074BC0000-0x000000007516B000-memory.dmp

memory/2308-7-0x0000000074BC0000-0x000000007516B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 18:29

Reported

2024-06-26 18:30

Platform

win10v2004-20240508-en

Max time kernel

30s

Max time network

30s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Sena.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DPI Subsystem = "C:\\Program Files (x86)\\DPI Subsystem\\dpiss.exe" C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\DPI Subsystem\dpiss.exe C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
File opened for modification C:\Program Files (x86)\DPI Subsystem\dpiss.exe C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Sena.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Sena.exe

"C:\Users\Admin\AppData\Local\Temp\Sena.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 senaclient.ddns.net udp
US 8.8.4.4:53 senaclient.ddns.net udp
US 8.8.8.8:53 4.4.8.8.in-addr.arpa udp
US 8.8.8.8:53 senaclient.ddns.net udp
US 8.8.8.8:53 senaclient.ddns.net udp
US 8.8.8.8:53 udp

Files

memory/916-0-0x00000000750F2000-0x00000000750F3000-memory.dmp

memory/916-1-0x00000000750F0000-0x00000000756A1000-memory.dmp

memory/916-2-0x00000000750F0000-0x00000000756A1000-memory.dmp

memory/916-5-0x00000000750F0000-0x00000000756A1000-memory.dmp

memory/916-6-0x00000000750F2000-0x00000000750F3000-memory.dmp

memory/916-7-0x00000000750F0000-0x00000000756A1000-memory.dmp

memory/916-8-0x00000000750F0000-0x00000000756A1000-memory.dmp