Malware Analysis Report

2025-04-13 21:10

Sample ID 240127-ht1kksfde7
Target 79949bbec90a663289312a4bcb043aeb
SHA256 0b0818a3e82b1653a0160daedf39b18f4dd2a1b41661928451e5a26c4b6392a7
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0b0818a3e82b1653a0160daedf39b18f4dd2a1b41661928451e5a26c4b6392a7

Threat Level: Known bad

The file 79949bbec90a663289312a4bcb043aeb was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

NanoCore

Checks whether UAC is enabled

Adds Run key to start application

Suspicious use of SetThreadContext

Drops file in Program Files directory

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-27 07:02

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-27 07:02

Reported

2024-01-27 07:05

Platform

win7-20231215-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.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 Manager = "C:\\Program Files (x86)\\ISS Manager\\issmgr.exe" C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.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\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 816 set thread context of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\ISS Manager\issmgr.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A
File opened for modification C:\Program Files (x86)\ISS Manager\issmgr.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 816 wrote to memory of 2880 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe

Processes

C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe

"C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe"

C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe

"C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp

Files

memory/816-0-0x0000000000F40000-0x0000000000FB0000-memory.dmp

memory/816-1-0x0000000073FC0000-0x00000000746AE000-memory.dmp

memory/816-2-0x0000000004AE0000-0x0000000004B20000-memory.dmp

memory/816-3-0x0000000000440000-0x0000000000448000-memory.dmp

memory/2880-6-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2880-5-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2880-8-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2880-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2880-4-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2880-11-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2880-17-0x0000000000400000-0x0000000000438000-memory.dmp

memory/2880-14-0x0000000000400000-0x0000000000438000-memory.dmp

memory/816-18-0x0000000073FC0000-0x00000000746AE000-memory.dmp

memory/2880-19-0x0000000073FC0000-0x00000000746AE000-memory.dmp

memory/2880-20-0x0000000004720000-0x0000000004760000-memory.dmp

memory/2880-23-0x00000000004F0000-0x00000000004FA000-memory.dmp

memory/2880-24-0x0000000000670000-0x000000000068E000-memory.dmp

memory/2880-25-0x0000000000870000-0x000000000087A000-memory.dmp

memory/2880-26-0x0000000073FC0000-0x00000000746AE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-27 07:02

Reported

2024-01-27 07:05

Platform

win10v2004-20231222-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.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\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe" C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.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\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1960 set thread context of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\SMTP Subsystem\smtpss.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A
File opened for modification C:\Program Files (x86)\SMTP Subsystem\smtpss.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1960 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 1960 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 1960 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 1960 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 1960 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 1960 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 1960 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe
PID 1960 wrote to memory of 2544 N/A C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe

Processes

C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe

"C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe"

C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe

"C:\Users\Admin\AppData\Local\Temp\79949bbec90a663289312a4bcb043aeb.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp
US 8.8.8.8:53 grene231.ddns.net udp

Files

memory/1960-1-0x0000000074BE0000-0x0000000075390000-memory.dmp

memory/1960-2-0x00000000058A0000-0x0000000005932000-memory.dmp

memory/1960-0-0x0000000000E10000-0x0000000000E80000-memory.dmp

memory/1960-3-0x0000000005830000-0x0000000005840000-memory.dmp

memory/1960-4-0x0000000005BA0000-0x0000000005C3C000-memory.dmp

memory/1960-5-0x0000000005A90000-0x0000000005A98000-memory.dmp

memory/1960-6-0x00000000061F0000-0x0000000006794000-memory.dmp

memory/2544-7-0x0000000000400000-0x0000000000438000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\79949bbec90a663289312a4bcb043aeb.exe.log

MD5 a6b67088efc040365b2447fdcda1e0fd
SHA1 ecbb5a3354bedfb924c498e5d852c5831a5b22f7
SHA256 a2c0432a8caeb10a8cd8634ceee0bc4b53d75a02e8e463a01bf97a4e25b46a55
SHA512 cb83069882d727e7733945d1593e87f34869fc5397d01d17d3022c4777a37322d9d94ecdfaeca863a01dec89aaaaeaf7dd997e17a97ba4ffdacf64d31021c156

memory/2544-13-0x0000000074BE0000-0x0000000075390000-memory.dmp

memory/1960-12-0x0000000074BE0000-0x0000000075390000-memory.dmp

memory/2544-14-0x0000000005250000-0x0000000005260000-memory.dmp

memory/2544-15-0x00000000052A0000-0x00000000052AA000-memory.dmp

memory/2544-18-0x0000000005530000-0x000000000553A000-memory.dmp

memory/2544-19-0x0000000005900000-0x000000000591E000-memory.dmp

memory/2544-20-0x0000000006160000-0x000000000616A000-memory.dmp

memory/2544-21-0x0000000074BE0000-0x0000000075390000-memory.dmp

memory/2544-22-0x0000000005250000-0x0000000005260000-memory.dmp