Analysis Overview
SHA256
69ca4d42492cef4caa9e2b85988c13e0dda8e8d8d962dd1cc3fc4adb4b3478f1
Threat Level: Known bad
The file DeepFreeze.exe was found to be: Known bad.
Malicious Activity Summary
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
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-23 20:03
Signatures
Nanocore family
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
Signatures
NanoCore
Adds Run key to start application
| 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
| 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
Signatures
NanoCore
Adds Run key to start application
| 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
| 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: EnumeratesProcesses
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