Malware Analysis Report

2024-10-19 07:05

Sample ID 240807-c9z14asdrh
Target 502ef40f2a0aec3170e2c18ea62aba30N.exe
SHA256 e46f2ba9a9263646b8efb81747e0cf5fd1f41a4b2cf1ce6e41982530bc586a71
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

e46f2ba9a9263646b8efb81747e0cf5fd1f41a4b2cf1ce6e41982530bc586a71

Threat Level: Known bad

The file 502ef40f2a0aec3170e2c18ea62aba30N.exe 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

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-07 02:47

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

2024-08-07 02:47

Reported

2024-08-07 02:49

Platform

win7-20240708-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.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\502ef40f2a0aec3170e2c18ea62aba30N.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\UDP Service = "C:\\Program Files (x86)\\UDP Service\\udpsv.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 3060 set thread context of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.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)\UDP Service\udpsv.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
File opened for modification C:\Program Files (x86)\UDP Service\udpsv.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:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.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
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 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 3060 wrote to memory of 2996 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 2996 wrote to memory of 2884 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2996 wrote to memory of 2884 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2996 wrote to memory of 2884 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2996 wrote to memory of 2884 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2996 wrote to memory of 2772 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2996 wrote to memory of 2772 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2996 wrote to memory of 2772 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 2996 wrote to memory of 2772 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe

"C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.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 "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB0E8.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB146.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

Files

memory/3060-0-0x00000000000B0000-0x00000000000B1000-memory.dmp

memory/2996-1-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2996-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2996-9-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2996-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2996-2-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2996-10-0x00000000745D2000-0x00000000745D4000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpB0E8.tmp

MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

C:\Users\Admin\AppData\Local\Temp\tmpB146.tmp

MD5 0a24db62cb5b84309c4803346caaa25d
SHA1 67660778f61bb44168c33ed3fe56ed86cf9583e8
SHA256 38d38647af394a04ee6add9f05c43244f04e64a6b96257f4b241a5038efa82df
SHA512 d25d9df063f44595d5e0bf890755bd387655131ff369eeedf3d11ffcc6202ca4455bbb33a8a926dd06839cbd1ddec3d06809b3c66a82c6518aa14beaa469a548

memory/2996-21-0x00000000745D2000-0x00000000745D4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-07 02:47

Reported

2024-08-07 02:49

Platform

win10v2004-20240802-en

Max time kernel

118s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.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\502ef40f2a0aec3170e2c18ea62aba30N.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\DNS Manager = "C:\\Program Files (x86)\\DNS Manager\\dnsmgr.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 744 set thread context of 1424 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.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)\DNS Manager\dnsmgr.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe N/A
File opened for modification C:\Program Files (x86)\DNS Manager\dnsmgr.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\502ef40f2a0aec3170e2c18ea62aba30N.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: 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 744 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 744 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 744 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 744 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 744 wrote to memory of 1424 N/A C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
PID 1424 wrote to memory of 2700 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1424 wrote to memory of 2700 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1424 wrote to memory of 2700 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1424 wrote to memory of 5012 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1424 wrote to memory of 5012 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe
PID 1424 wrote to memory of 5012 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.exe

"C:\Users\Admin\AppData\Local\Temp\502ef40f2a0aec3170e2c18ea62aba30N.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 "DNS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBFA2.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "DNS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC000.tmp"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
NL 213.184.126.143:1993 tcp
US 52.111.227.13:443 tcp
NL 213.184.126.143:1993 tcp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
NL 213.184.126.143:1993 tcp
NL 213.184.126.143:1993 tcp

Files

memory/744-0-0x0000000001530000-0x0000000001531000-memory.dmp

memory/1424-2-0x0000000000400000-0x0000000000438000-memory.dmp

memory/1424-6-0x0000000073BB2000-0x0000000073BB3000-memory.dmp

memory/1424-7-0x0000000073BB0000-0x0000000074161000-memory.dmp

memory/1424-8-0x0000000073BB0000-0x0000000074161000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpBFA2.tmp

MD5 c6f0625bf4c1cdfb699980c9243d3b22
SHA1 43de1fe580576935516327f17b5da0c656c72851
SHA256 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576
SHA512 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969

C:\Users\Admin\AppData\Local\Temp\tmpC000.tmp

MD5 bf0287a4e4ec6b543e5f2c020d4f88b2
SHA1 da151b3e3f382ec107053e487b08035616db2694
SHA256 ef704c92466ea7f43c33880380c3fbc8bee8d8ce7a041abefb23fd610baff13c
SHA512 94c9b8f53120a0024031996a91ee54de0a791e49e45a9e2c6e56c51a363b3b3cac206f19b84861a21054bcd3ee8031ab684596502a126fea47352474a4ecd8be

memory/1424-19-0x0000000073BB2000-0x0000000073BB3000-memory.dmp

memory/1424-20-0x0000000073BB0000-0x0000000074161000-memory.dmp