Malware Analysis Report

2024-10-23 19:45

Sample ID 240423-ysxejabc9t
Target DeepFreeze.exe
SHA256 69ca4d42492cef4caa9e2b85988c13e0dda8e8d8d962dd1cc3fc4adb4b3478f1
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

69ca4d42492cef4caa9e2b85988c13e0dda8e8d8d962dd1cc3fc4adb4b3478f1

Threat Level: Known bad

The file DeepFreeze.exe was found to be: Known bad.

Malicious Activity Summary

nanocore evasion keylogger persistence spyware stealer trojan

Nanocore family

NanoCore

Adds Run key to start application

Checks whether UAC is enabled

Legitimate hosting services abused for malware hosting/C2

Drops file in Program Files directory

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-23 20:03

Signatures

Nanocore family

nanocore

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-23 20:03

Reported

2024-04-23 20:06

Platform

win7-20240220-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\DeepFreeze.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\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe" C:\Users\Admin\AppData\Local\Temp\DeepFreeze.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\DeepFreeze.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A

Drops file in Program Files directory

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\DeepFreeze.exe

"C:\Users\Admin\AppData\Local\Temp\DeepFreeze.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.182:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.182:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.182:15030 0.tcp.in.ngrok.io tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.182:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.30.85:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.122.107:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp

Files

memory/2316-0-0x0000000074BE0000-0x000000007518B000-memory.dmp

memory/2316-1-0x0000000000490000-0x00000000004D0000-memory.dmp

memory/2316-2-0x0000000074BE0000-0x000000007518B000-memory.dmp

memory/2316-5-0x0000000074BE0000-0x000000007518B000-memory.dmp

memory/2316-6-0x0000000000490000-0x00000000004D0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-23 20:03

Reported

2024-04-23 20:06

Platform

win10v2004-20240412-en

Max time kernel

145s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\DeepFreeze.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\SAAS Manager = "C:\\Program Files (x86)\\SAAS Manager\\saasmgr.exe" C:\Users\Admin\AppData\Local\Temp\DeepFreeze.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\DeepFreeze.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A
N/A 0.tcp.in.ngrok.io N/A N/A

Drops file in Program Files directory

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

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\DeepFreeze.exe

"C:\Users\Admin\AppData\Local\Temp\DeepFreeze.exe"

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

C:\Users\Admin\AppData\Local\Temp\DeepFreeze.exe

"C:\Users\Admin\AppData\Local\Temp\DeepFreeze.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.182:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 182.115.6.3.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 32.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 198.32.209.4.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.182:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 232.98.6.3.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 154.173.246.72.in-addr.arpa udp
US 8.8.8.8:53 156.33.209.4.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 31.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 19.83.221.88.in-addr.arpa udp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.30.85:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 85.30.6.3.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 64.115.6.3.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.30.85:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 21.121.18.2.in-addr.arpa udp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 48.251.17.2.in-addr.arpa udp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.115.64:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.122.107:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 107.122.6.3.in-addr.arpa udp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.98.232:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 0.tcp.in.ngrok.io udp
IN 3.6.122.107:15030 0.tcp.in.ngrok.io tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
N/A 127.0.0.1:15030 tcp
US 8.8.8.8:53 42.56.20.217.in-addr.arpa udp
N/A 127.0.0.1:15030 tcp

Files

memory/2308-0-0x00000000747A0000-0x0000000074D51000-memory.dmp

memory/2308-1-0x0000000000ED0000-0x0000000000EE0000-memory.dmp

memory/2308-2-0x00000000747A0000-0x0000000074D51000-memory.dmp

memory/2308-5-0x0000000000ED0000-0x0000000000EE0000-memory.dmp

memory/2308-6-0x00000000747A0000-0x0000000074D51000-memory.dmp

memory/2308-7-0x0000000000ED0000-0x0000000000EE0000-memory.dmp

memory/1480-8-0x00000000747A0000-0x0000000074D51000-memory.dmp

memory/1480-9-0x0000000000D60000-0x0000000000D70000-memory.dmp

memory/1480-10-0x00000000747A0000-0x0000000074D51000-memory.dmp

memory/1480-12-0x00000000747A0000-0x0000000074D51000-memory.dmp