Malware Analysis Report

2025-04-13 20:47

Sample ID 250203-lk36wsyrem
Target PIcopy.docs.x.zip
SHA256 1a649e1885be114a4140729e822438aa686170685964f8853b391b3ed7d633de
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

1a649e1885be114a4140729e822438aa686170685964f8853b391b3ed7d633de

Threat Level: Known bad

The file PIcopy.docs.x.zip 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 AdjustPrivilegeToken

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-03 09:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-03 09:36

Reported

2025-02-03 09:38

Platform

win7-20240903-en

Max time kernel

148s

Max time network

149s

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\IMAP Monitor = "C:\\Program Files (x86)\\IMAP Monitor\\imapmon.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 2108 set thread context of 2164 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)\IMAP Monitor\imapmon.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A
File opened for modification C:\Program Files (x86)\IMAP Monitor\imapmon.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:\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\P I copy.docs.x.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 2108 wrote to memory of 2164 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 2108 wrote to memory of 2164 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 2108 wrote to memory of 2164 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 2108 wrote to memory of 2164 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 2108 wrote to memory of 2164 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 2108 wrote to memory of 2164 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 2108 wrote to memory of 2164 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 2108 wrote to memory of 2164 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 2108 wrote to memory of 2164 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 2164 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2164 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2164 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2164 wrote to memory of 2840 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2164 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2164 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2164 wrote to memory of 2628 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 2164 wrote to memory of 2628 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 "IMAP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE2C1.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "IMAP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE31F.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/2108-0-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

memory/2108-1-0x00000000013C0000-0x0000000001476000-memory.dmp

memory/2108-2-0x0000000074CE0000-0x00000000753CE000-memory.dmp

memory/2108-3-0x0000000000470000-0x000000000048E000-memory.dmp

memory/2108-4-0x0000000074CEE000-0x0000000074CEF000-memory.dmp

memory/2108-5-0x0000000074CE0000-0x00000000753CE000-memory.dmp

memory/2108-6-0x00000000002C0000-0x000000000033E000-memory.dmp

memory/2164-7-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2164-19-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2164-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2164-15-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2164-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2164-12-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2164-10-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2164-9-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2108-21-0x0000000074CE0000-0x00000000753CE000-memory.dmp

memory/2164-20-0x0000000074CE0000-0x00000000753CE000-memory.dmp

memory/2164-22-0x0000000074CE0000-0x00000000753CE000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpE2C1.tmp

MD5 01f9a86d9610760a6fef15b42f51421c
SHA1 6712e76ab3cde995d646c65b294201a63c23a221
SHA256 ce259ad39d30c453057fc465a0b4106ddbb7d5b01abdc01d41cf8f0d77a4f1e8
SHA512 10b5c22823e33eb169221ddfbc1119bb2c6e6ca61c143a90fb812973fe611df18afb4087d142b96705fdcd66bae880a29555ffd8eef85a68f3df6a69c7f97e04

C:\Users\Admin\AppData\Local\Temp\tmpE31F.tmp

MD5 d2d6911d94b06e405e7687a2437eafec
SHA1 9f28f9e7d8d5179d44ddaa6ca266984ed7521dea
SHA256 2dc87169ad53fbdd7abb08f49777cb8fb05adbff4e6f6616b4c89942af8cad0f
SHA512 b5983de701ff98e944283a25f1770c1e792d52148dc1671f1d19203f8b9d10b056abcf79a17ca536a5f88ccf52f6445d8f3e75fce628666640ad8bad697dcfd1

memory/2164-30-0x0000000000450000-0x000000000045A000-memory.dmp

memory/2164-31-0x00000000004A0000-0x00000000004BE000-memory.dmp

memory/2164-32-0x0000000000500000-0x000000000050A000-memory.dmp

memory/2164-33-0x0000000074CE0000-0x00000000753CE000-memory.dmp

memory/2164-34-0x0000000074CE0000-0x00000000753CE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-03 09:36

Reported

2025-02-03 09:38

Platform

win10v2004-20250129-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\IMAP Monitor = "C:\\Program Files (x86)\\IMAP Monitor\\imapmon.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 2760 set thread context of 4132 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)\IMAP Monitor\imapmon.exe C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe N/A
File opened for modification C:\Program Files (x86)\IMAP Monitor\imapmon.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:\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

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 2760 wrote to memory of 4132 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 2760 wrote to memory of 4132 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 2760 wrote to memory of 4132 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 2760 wrote to memory of 4132 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 2760 wrote to memory of 4132 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 2760 wrote to memory of 4132 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 2760 wrote to memory of 4132 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 2760 wrote to memory of 4132 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 4132 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 4132 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 4132 wrote to memory of 4144 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 4132 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 4132 wrote to memory of 1800 N/A C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe C:\Windows\SysWOW64\schtasks.exe
PID 4132 wrote to memory of 1800 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 "IMAP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEB1B.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "IMAP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEB6A.tmp"

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 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 128.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 182.129.81.91.in-addr.arpa udp
GB 88.221.135.42:443 www.bing.com tcp
US 8.8.8.8:53 42.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 54.120.234.20.in-addr.arpa udp
NL 91.92.240.88:2777 tcp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
NL 91.92.240.88:2777 tcp
NL 91.92.240.88:2777 tcp
US 8.8.8.8:53 23.236.111.52.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
US 8.8.8.8:53 94.65.42.20.in-addr.arpa udp

Files

memory/2760-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

memory/2760-1-0x0000000000970000-0x0000000000A26000-memory.dmp

memory/2760-2-0x0000000005A10000-0x0000000005FB4000-memory.dmp

memory/2760-3-0x0000000005460000-0x00000000054F2000-memory.dmp

memory/2760-4-0x0000000005400000-0x000000000540A000-memory.dmp

memory/2760-5-0x0000000074DE0000-0x0000000075590000-memory.dmp

memory/2760-6-0x00000000056F0000-0x000000000578C000-memory.dmp

memory/2760-7-0x00000000057B0000-0x00000000057CE000-memory.dmp

memory/2760-8-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

memory/2760-9-0x0000000074DE0000-0x0000000075590000-memory.dmp

memory/2760-10-0x0000000001510000-0x000000000158E000-memory.dmp

memory/4132-11-0x0000000000400000-0x0000000000438000-memory.dmp

memory/4132-13-0x0000000074DE0000-0x0000000075590000-memory.dmp

memory/2760-14-0x0000000074DE0000-0x0000000075590000-memory.dmp

memory/4132-15-0x0000000074DE0000-0x0000000075590000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpEB1B.tmp

MD5 01f9a86d9610760a6fef15b42f51421c
SHA1 6712e76ab3cde995d646c65b294201a63c23a221
SHA256 ce259ad39d30c453057fc465a0b4106ddbb7d5b01abdc01d41cf8f0d77a4f1e8
SHA512 10b5c22823e33eb169221ddfbc1119bb2c6e6ca61c143a90fb812973fe611df18afb4087d142b96705fdcd66bae880a29555ffd8eef85a68f3df6a69c7f97e04

C:\Users\Admin\AppData\Local\Temp\tmpEB6A.tmp

MD5 d2d6911d94b06e405e7687a2437eafec
SHA1 9f28f9e7d8d5179d44ddaa6ca266984ed7521dea
SHA256 2dc87169ad53fbdd7abb08f49777cb8fb05adbff4e6f6616b4c89942af8cad0f
SHA512 b5983de701ff98e944283a25f1770c1e792d52148dc1671f1d19203f8b9d10b056abcf79a17ca536a5f88ccf52f6445d8f3e75fce628666640ad8bad697dcfd1

memory/4132-23-0x0000000005B10000-0x0000000005B1A000-memory.dmp

memory/4132-24-0x0000000005B20000-0x0000000005B3E000-memory.dmp

memory/4132-25-0x0000000005E00000-0x0000000005E0A000-memory.dmp

memory/4132-26-0x0000000074DE0000-0x0000000075590000-memory.dmp

memory/4132-27-0x0000000074DE0000-0x0000000075590000-memory.dmp