Malware Analysis Report

2025-04-13 20:47

Sample ID 250203-f4ysma1qax
Target P I copy.docs.x.exe
SHA256 e207ac84a52789e4f93b901bdc24a0b9930759d50aab651cc3d5d1f3be7a3e44
Tags
nanocore defense_evasion discovery 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

e207ac84a52789e4f93b901bdc24a0b9930759d50aab651cc3d5d1f3be7a3e44

Threat Level: Known bad

The file P I copy.docs.x.exe was found to be: Known bad.

Malicious Activity Summary

nanocore defense_evasion discovery keylogger persistence spyware stealer trojan

Nanocore family

NanoCore

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Drops file in Program Files directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-03 05:26

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-03 05:26

Reported

2025-02-03 05:28

Platform

win7-20241010-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Nanocore family

nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\DSL Manager = "C:\\Program Files (x86)\\DSL Manager\\dslmgr.exe" C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A

Checks whether UAC is enabled

defense_evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2524 set thread context of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\DSL Manager\dslmgr.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A
File opened for modification C:\Program Files (x86)\DSL Manager\dslmgr.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.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\P I copy.docs.x.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.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: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2524 wrote to memory of 2112 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2112 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2112 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2112 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2112 wrote to memory of 2212 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2112 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2112 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2112 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2112 wrote to memory of 2100 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe

"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"

C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe

"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "DSL Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpCFEC.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "DSL Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD25D.tmp"

Network

Country Destination Domain Proto
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp

Files

memory/2524-0-0x000000007481E000-0x000000007481F000-memory.dmp

memory/2524-1-0x0000000000EB0000-0x0000000000F66000-memory.dmp

memory/2524-2-0x0000000074810000-0x0000000074EFE000-memory.dmp

memory/2524-3-0x00000000005B0000-0x00000000005CE000-memory.dmp

memory/2524-4-0x000000007481E000-0x000000007481F000-memory.dmp

memory/2524-5-0x0000000074810000-0x0000000074EFE000-memory.dmp

memory/2524-6-0x00000000004D0000-0x000000000054E000-memory.dmp

memory/2112-7-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2112-16-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2112-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2112-13-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2112-11-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2112-9-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2112-21-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2112-18-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2524-24-0x0000000074810000-0x0000000074EFE000-memory.dmp

memory/2112-23-0x0000000074810000-0x0000000074EFE000-memory.dmp

memory/2112-22-0x0000000074810000-0x0000000074EFE000-memory.dmp

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

MD5 01f9a86d9610760a6fef15b42f51421c
SHA1 6712e76ab3cde995d646c65b294201a63c23a221
SHA256 ce259ad39d30c453057fc465a0b4106ddbb7d5b01abdc01d41cf8f0d77a4f1e8
SHA512 10b5c22823e33eb169221ddfbc1119bb2c6e6ca61c143a90fb812973fe611df18afb4087d142b96705fdcd66bae880a29555ffd8eef85a68f3df6a69c7f97e04

C:\Users\Admin\AppData\Local\Temp\tmpD25D.tmp

MD5 a0bcaf1694d4fcae2c44258530850f35
SHA1 99e9ccea3a9dca8d94808f6488fdc37c0b3bfe73
SHA256 099c4a82d8e8ddf5ff801a8f08fb5a143834506e936ce846b380a42eb24e888e
SHA512 ad3f2fbc09f7d57c24a35a62f00251c93d480e065f3b7fbc7133736cb144a3031fdc9f3e8be8a1c6dcdb8b3def654618faab416f66a28628ab71e55de4df0da3

memory/2112-32-0x00000000003F0000-0x00000000003FA000-memory.dmp

memory/2112-33-0x00000000009F0000-0x0000000000A0E000-memory.dmp

memory/2112-34-0x0000000000A10000-0x0000000000A1A000-memory.dmp

memory/2112-35-0x0000000074810000-0x0000000074EFE000-memory.dmp

memory/2112-36-0x0000000074810000-0x0000000074EFE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-03 05:26

Reported

2025-02-03 05:28

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Nanocore family

nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ARP Host = "C:\\Program Files (x86)\\ARP Host\\arphost.exe" C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A

Checks whether UAC is enabled

defense_evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1376 set thread context of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\ARP Host\arphost.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A
File opened for modification C:\Program Files (x86)\ARP Host\arphost.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.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\P I copy.docs.x.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.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:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1376 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 1376 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 1376 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 1376 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 1376 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 1376 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 1376 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 1376 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
PID 2764 wrote to memory of 3760 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2764 wrote to memory of 3760 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2764 wrote to memory of 3760 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2764 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2764 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2764 wrote to memory of 1756 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe

"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"

C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe

"C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpECA2.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpED4F.tmp"

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 167.173.78.104.in-addr.arpa udp
US 8.8.8.8:53 130.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
NL 91.92.240.88:2777 tcp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
NL 91.92.240.88:2777 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp

Files

memory/1376-0-0x000000007454E000-0x000000007454F000-memory.dmp

memory/1376-1-0x0000000000F20000-0x0000000000FD6000-memory.dmp

memory/1376-2-0x0000000005EE0000-0x0000000006484000-memory.dmp

memory/1376-3-0x00000000059D0000-0x0000000005A62000-memory.dmp

memory/1376-4-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1376-5-0x0000000005B60000-0x0000000005B6A000-memory.dmp

memory/1376-6-0x0000000005CB0000-0x0000000005D4C000-memory.dmp

memory/1376-7-0x0000000005E80000-0x0000000005E9E000-memory.dmp

memory/1376-8-0x000000007454E000-0x000000007454F000-memory.dmp

memory/1376-9-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1376-10-0x00000000053B0000-0x000000000542E000-memory.dmp

memory/2764-11-0x0000000000400000-0x0000000000438000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\P I copy.docs.x.exe.log

MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

memory/2764-14-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/1376-15-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/2764-16-0x0000000074540000-0x0000000074CF0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpECA2.tmp

MD5 01f9a86d9610760a6fef15b42f51421c
SHA1 6712e76ab3cde995d646c65b294201a63c23a221
SHA256 ce259ad39d30c453057fc465a0b4106ddbb7d5b01abdc01d41cf8f0d77a4f1e8
SHA512 10b5c22823e33eb169221ddfbc1119bb2c6e6ca61c143a90fb812973fe611df18afb4087d142b96705fdcd66bae880a29555ffd8eef85a68f3df6a69c7f97e04

C:\Users\Admin\AppData\Local\Temp\tmpED4F.tmp

MD5 447ab194ab36cb1d20078d80e502b1b2
SHA1 a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0
SHA256 8d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5
SHA512 49ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327

memory/2764-24-0x00000000056B0000-0x00000000056BA000-memory.dmp

memory/2764-25-0x0000000005880000-0x000000000589E000-memory.dmp

memory/2764-26-0x00000000068B0000-0x00000000068BA000-memory.dmp

memory/2764-27-0x0000000074540000-0x0000000074CF0000-memory.dmp

memory/2764-28-0x0000000074540000-0x0000000074CF0000-memory.dmp