Malware Analysis Report

2025-06-16 06:21

Sample ID 231204-jr8c3shh23
Target 6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70
SHA256 6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70
Tags
nanocore 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 Overview

score
10/10

SHA256

6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70

Threat Level: Known bad

The file 6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70 was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

NanoCore

Adds Run key to start application

Checks whether UAC is enabled

Suspicious use of SetThreadContext

Drops file in Program Files directory

Unsigned PE

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-04 07:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-04 07:55

Reported

2023-12-04 07:57

Platform

win10v2004-20231130-en

Max time kernel

144s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.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\ISS Monitor = "C:\\Program Files (x86)\\ISS Monitor\\issmon.exe" C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.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\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\ISS Monitor\issmon.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe N/A
File opened for modification C:\Program Files (x86)\ISS Monitor\issmon.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe N/A

Creates scheduled task(s)

persistence
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\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4916 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe
PID 4916 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe
PID 4916 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe
PID 4916 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe
PID 4916 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe
PID 4916 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe
PID 4916 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe
PID 4916 wrote to memory of 4244 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe
PID 4244 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Windows\SysWOW64\schtasks.exe
PID 4244 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Windows\SysWOW64\schtasks.exe
PID 4244 wrote to memory of 5104 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Windows\SysWOW64\schtasks.exe
PID 4244 wrote to memory of 3380 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Windows\SysWOW64\schtasks.exe
PID 4244 wrote to memory of 3380 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Windows\SysWOW64\schtasks.exe
PID 4244 wrote to memory of 3380 N/A C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe

"C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe"

C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe

"C:\Users\Admin\AppData\Local\Temp\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "ISS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8107.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "ISS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8147.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 btldinc7.sytes.net udp
US 8.8.4.4:53 btldinc7.sytes.net udp
US 8.8.8.8:53 4.4.8.8.in-addr.arpa udp
US 8.8.8.8:53 btldinc7.sytes.net udp
US 8.8.4.4:53 btldinc7.sytes.net udp
US 8.8.8.8:53 btldinc7.sytes.net udp
US 8.8.8.8:53 btldinc7.sytes.net udp
US 8.8.4.4:53 btldinc7.sytes.net udp
US 8.8.8.8:53 btldinc7.sytes.net udp
N/A 127.0.0.1:4510 tcp
N/A 127.0.0.1:4510 tcp
N/A 127.0.0.1:4510 tcp
US 8.8.8.8:53 btldinc7.sytes.net udp

Files

memory/4916-0-0x0000000000410000-0x00000000004DA000-memory.dmp

memory/4916-1-0x00000000751B0000-0x0000000075960000-memory.dmp

memory/4916-2-0x00000000055C0000-0x0000000005B64000-memory.dmp

memory/4916-3-0x0000000004EE0000-0x0000000004F72000-memory.dmp

memory/4916-4-0x0000000005100000-0x0000000005110000-memory.dmp

memory/4916-5-0x0000000004ED0000-0x0000000004EDA000-memory.dmp

memory/4916-6-0x00000000051C0000-0x00000000051D8000-memory.dmp

memory/4916-7-0x0000000005520000-0x0000000005528000-memory.dmp

memory/4916-8-0x0000000005530000-0x000000000553A000-memory.dmp

memory/4916-9-0x0000000006840000-0x00000000068B2000-memory.dmp

memory/4916-10-0x0000000006680000-0x000000000671C000-memory.dmp

memory/4244-11-0x0000000000400000-0x0000000000438000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\6e4a05f7b769a8cb12f932281af71be353b058d68a3f96bd00a38b63e78bae70.exe.log

MD5 8ec831f3e3a3f77e4a7b9cd32b48384c
SHA1 d83f09fd87c5bd86e045873c231c14836e76a05c
SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA512 26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

memory/4916-14-0x00000000751B0000-0x0000000075960000-memory.dmp

memory/4244-15-0x00000000751B0000-0x0000000075960000-memory.dmp

memory/4244-16-0x0000000005930000-0x0000000005940000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp8107.tmp

MD5 3e51d5e4e7e3dfc9ed30d5417edea2cb
SHA1 2ede27804cdb862499c627f3debcda7c584a0c21
SHA256 1d00d6de3ec0ef1264939db8a9071eaee2f6e6f648a93630900a0f097a1980ae
SHA512 bf44eb55f50705b13553fc2dc300836c491755f3f98cbda43dc1d60db26cb1799aab5941d1b4555acb0b48728f3126aa52affa5b4788f1ab36971e938756b90c

C:\Users\Admin\AppData\Local\Temp\tmp8147.tmp

MD5 97ca1345e92062cecc79ad320a0e89b1
SHA1 9e696a4df86c685befe01d00a16611331ed7e763
SHA256 937a440251a10c5a8921104975e5b7f166a34be5e48aa5c4ad344f8beadd1ad2
SHA512 b7cce6586e4db4e387343c01977b0768fca8c4842098f1caf7e4240fa89273279b1ade5ed25aaf108102dd06c0ee945a24cf4786eb24de34520b4c11c2e82214

memory/4244-25-0x0000000006A50000-0x0000000006A6E000-memory.dmp

memory/4244-24-0x0000000005E60000-0x0000000005E6A000-memory.dmp

memory/4244-26-0x0000000006B90000-0x0000000006B9A000-memory.dmp

memory/4244-27-0x00000000751B0000-0x0000000075960000-memory.dmp

memory/4244-28-0x0000000005930000-0x0000000005940000-memory.dmp