Malware Analysis Report

2024-10-23 19:39

Sample ID 240811-a3bntawhjk
Target SolaraV2.1 nano.exe
SHA256 83d064ee508b2543d3f9fc16f4ed16fee34cf130713d3cee54d5f20ce7f452cc
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 Overview

score
10/10

SHA256

83d064ee508b2543d3f9fc16f4ed16fee34cf130713d3cee54d5f20ce7f452cc

Threat Level: Known bad

The file SolaraV2.1 nano.exe was found to be: Known bad.

Malicious Activity Summary

nanocore discovery evasion keylogger persistence spyware stealer trojan

Nanocore family

NanoCore

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-11 00:43

Signatures

Nanocore family

nanocore

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-11 00:43

Reported

2024-08-11 00:47

Platform

win10v2004-20240802-en

Max time kernel

209s

Max time network

206s

Command Line

"C:\Users\Admin\AppData\Local\Temp\SolaraV2.1 nano.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\DNS Monitor = "C:\\Program Files (x86)\\DNS Monitor\\dnsmon.exe" C:\Users\Admin\AppData\Local\Temp\SolaraV2.1 nano.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\SolaraV2.1 nano.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\DNS Monitor\dnsmon.exe C:\Users\Admin\AppData\Local\Temp\SolaraV2.1 nano.exe N/A
File opened for modification C:\Program Files (x86)\DNS Monitor\dnsmon.exe C:\Users\Admin\AppData\Local\Temp\SolaraV2.1 nano.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\SolaraV2.1 nano.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\SolaraV2.1 nano.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\SolaraV2.1 nano.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\SolaraV2.1 nano.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\SolaraV2.1 nano.exe

"C:\Users\Admin\AppData\Local\Temp\SolaraV2.1 nano.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "DNS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA066.tmp"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /create /f /tn "DNS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA0F4.tmp"

Network

Country Destination Domain Proto
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp
N/A 127.0.0.1:54984 tcp

Files

memory/4948-0-0x0000000074782000-0x0000000074783000-memory.dmp

memory/4948-1-0x0000000074780000-0x0000000074D31000-memory.dmp

memory/4948-2-0x0000000074780000-0x0000000074D31000-memory.dmp

memory/4948-4-0x0000000074780000-0x0000000074D31000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpA066.tmp

MD5 4bb70ae457112a038573b994ab89c3ae
SHA1 7e5057e0034d70f94c17c10438437b138f055780
SHA256 411a8d9306b8233d8dad43faae19467494e84a5458e6e2c461bc9db4c10a940c
SHA512 aaba48de49eb6fef60ec38e3f9f7ec3b4fc5962ff95259c9362afd01a30c6d290475b4c9c4dc5ba442de106ad4bde38d28768caf3f6aaf309e613cc115711dd1

C:\Users\Admin\AppData\Local\Temp\tmpA0F4.tmp

MD5 7620b805f7bc12c79e126656c858d0e0
SHA1 89f09b8b4ef1fc421ddf5ed0cbbe012fab7fd666
SHA256 4d6ea014d135bdc4a5fd4281ce705672561b0279deab4302e06cbfe95e1080a6
SHA512 b02ac735c98b20020251a23ffa1b0308ad3a1c99593a15a8020d742472b0d5c36caa31c6ca2372e88cfd3b6792206ea7920162c2a33c83da24f0098c0513f562

memory/4948-11-0x0000000074780000-0x0000000074D31000-memory.dmp

memory/4948-12-0x0000000074782000-0x0000000074783000-memory.dmp

memory/4948-13-0x0000000074780000-0x0000000074D31000-memory.dmp

memory/4948-14-0x0000000074780000-0x0000000074D31000-memory.dmp

memory/4948-15-0x0000000074780000-0x0000000074D31000-memory.dmp