Malware Analysis Report

2024-10-19 07:05

Sample ID 240805-eqebdszhld
Target de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c
SHA256 de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c
Tags
nanocore discovery evasion keylogger persistence spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c

Threat Level: Known bad

The file de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c was found to be: Known bad.

Malicious Activity Summary

nanocore discovery evasion keylogger persistence spyware stealer trojan

NanoCore

Drops startup file

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of SetThreadContext

AutoIT Executable

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SendNotifyMessage

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Scheduled Task/Job: Scheduled Task

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-05 04:08

Signatures

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-05 04:08

Reported

2024-08-05 04:11

Platform

win7-20240704-en

Max time kernel

137s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Monitor = "C:\\Program Files (x86)\\SMTP Monitor\\smtpmon.exe" C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2056 set thread context of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\SMTP Monitor\smtpmon.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
File opened for modification C:\Program Files (x86)\SMTP Monitor\smtpmon.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2056 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2884 wrote to memory of 2920 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2884 wrote to memory of 2920 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2884 wrote to memory of 2920 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2884 wrote to memory of 2920 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2884 wrote to memory of 2716 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2884 wrote to memory of 2716 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2884 wrote to memory of 2716 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2884 wrote to memory of 2716 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe

"C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "SMTP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB1A3.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "SMTP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB2CC.tmp"

Network

Country Destination Domain Proto
NL 213.184.126.143:1993 tcp
NL 213.184.126.143:1993 tcp
NL 213.184.126.143:1993 tcp
NL 213.184.126.143:1993 tcp
NL 213.184.126.143:1993 tcp

Files

memory/2056-0-0x00000000005E0000-0x00000000005E1000-memory.dmp

memory/2884-1-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2884-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2884-9-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2884-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2884-2-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2884-10-0x0000000073BD2000-0x0000000073BD4000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpB1A3.tmp

MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

C:\Users\Admin\AppData\Local\Temp\tmpB2CC.tmp

MD5 ffa9e95100598072ca693c672478895f
SHA1 518514c3112c51b2b21d36d3262bec72e83d025d
SHA256 1e45d509d390405f93e9f3b64ff497e61cf9bf791c015dde4499184b7a681eb3
SHA512 010d14ae46a23cef14cf1de9a06c8e6ff26ca86c10ebdd3d5f16f4ffbeacc3df7ca18fafda097e00bf747fb997c5c4f9d62646e47a3b501da7c630689c28d6df

memory/2884-21-0x0000000073BD2000-0x0000000073BD4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-05 04:08

Reported

2024-08-05 04:10

Platform

win10v2004-20240802-en

Max time kernel

135s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAS Monitor = "C:\\Program Files (x86)\\NAS Monitor\\nasmon.exe" C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.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:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 952 set thread context of 1504 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\NAS Monitor\nasmon.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
File opened for modification C:\Program Files (x86)\NAS Monitor\nasmon.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 952 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 952 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 952 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 952 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 952 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1504 wrote to memory of 3112 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1504 wrote to memory of 3112 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1504 wrote to memory of 3112 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1504 wrote to memory of 4124 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1504 wrote to memory of 4124 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1504 wrote to memory of 4124 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe

"C:\Users\Admin\AppData\Local\Temp\de168d2ec7ece474cad40f9eaca38103dd628adf0e177ecae5c7399ac6b09a5c.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "NAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC975.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "NAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC9C4.tmp"

Network

Country Destination Domain Proto
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
NL 213.184.126.143:1993 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
NL 213.184.126.143:1993 tcp
NL 213.184.126.143:1993 tcp
NL 213.184.126.143:1993 tcp
NL 213.184.126.143:1993 tcp
US 8.8.8.8:53 63.141.182.52.in-addr.arpa udp

Files

memory/1504-1-0x0000000000400000-0x0000000000438000-memory.dmp

memory/952-5-0x0000000001000000-0x0000000001001000-memory.dmp

memory/1504-6-0x0000000074102000-0x0000000074103000-memory.dmp

memory/1504-7-0x0000000074100000-0x00000000746B1000-memory.dmp

memory/1504-8-0x0000000074100000-0x00000000746B1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpC975.tmp

MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

C:\Users\Admin\AppData\Local\Temp\tmpC9C4.tmp

MD5 3144131f2fe1c35ad2aafff167a26f59
SHA1 959879de38aed11bc08b7725500d2c8c953e80bf
SHA256 d20aeda9cadd332268afc89cbee76f297b00f061bf69a2f558a8d7657e4c41d7
SHA512 27a07c8f953cc4fde9ec348d3f5c4621ab56ff281b778bc7ac95dd808d5f0eea6969c5e4662efc00a6416c8bcf4d8e3892be5c99e603e36f8aa49d2a957206fb

memory/1504-19-0x0000000074102000-0x0000000074103000-memory.dmp

memory/1504-20-0x0000000074100000-0x00000000746B1000-memory.dmp