Analysis Overview
SHA256
b17fb441c2af8dd5b20e49ffb9766bc737c9b6557db31beb3d9d18309dc87aec
Threat Level: Known bad
The file AsyncClient.exe was found to be: Known bad.
Malicious Activity Summary
AsyncRat
Async RAT payload
Asyncrat family
Async RAT payload
Legitimate hosting services abused for malware hosting/C2
Unsigned PE
Checks SCSI registry key(s)
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-06-05 14:56
Signatures
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Asyncrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-06-05 14:56
Reported
2023-06-05 14:59
Platform
win7-20230220-en
Max time kernel
128s
Max time network
142s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Legitimate hosting services abused for malware hosting/C2
Processes
C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 3.126.37.18:8080 | 2.tcp.eu.ngrok.io | tcp |
| N/A | 127.0.0.1:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| DE | 3.126.37.18:8080 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 18.197.239.5:8080 | 2.tcp.eu.ngrok.io | tcp |
| NL | 195.78.54.247:8080 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 18.197.239.5:8080 | 2.tcp.eu.ngrok.io | tcp |
Files
memory/1324-54-0x0000000000F90000-0x0000000000FA2000-memory.dmp
memory/1324-55-0x0000000000C00000-0x0000000000C40000-memory.dmp
memory/1324-56-0x0000000000C00000-0x0000000000C40000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-06-05 14:56
Reported
2023-06-05 15:01
Platform
win10v2004-20230220-en
Max time kernel
270s
Max time network
266s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Legitimate hosting services abused for malware hosting/C2
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\system32\taskmgr.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Processes
C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| N/A | 127.0.0.1:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 18.192.93.86:8080 | 2.tcp.eu.ngrok.io | tcp |
| US | 52.152.108.96:443 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 52.168.117.170:443 | tcp | |
| DE | 18.192.93.86:8080 | 2.tcp.eu.ngrok.io | tcp |
| US | 209.197.3.8:80 | tcp | |
| US | 209.197.3.8:80 | tcp | |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.36.159.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 45.8.109.52.in-addr.arpa | udp |
| NL | 173.223.113.164:443 | tcp | |
| NL | 173.223.113.131:80 | tcp | |
| US | 204.79.197.203:80 | api.msn.com | tcp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| NL | 195.78.54.247:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| NL | 195.78.54.247:8080 | tcp | |
| NL | 195.78.54.247:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| NL | 195.78.54.247:8080 | tcp | |
| NL | 195.78.54.247:15491 | tcp | |
| NL | 195.78.54.247:8080 | tcp | |
| NL | 195.78.54.247:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| NL | 195.78.54.247:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 18.157.68.73:8080 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:8080 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:8080 | 2.tcp.eu.ngrok.io | tcp |
| N/A | 127.0.0.1:15491 | tcp | |
| NL | 195.78.54.247:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp | |
| US | 8.8.8.8:53 | 26.178.89.13.in-addr.arpa | udp |
| NL | 195.78.54.247:15491 | tcp | |
| N/A | 127.0.0.1:15491 | tcp |
Files
memory/4356-133-0x0000000000DD0000-0x0000000000DE2000-memory.dmp
memory/4356-134-0x0000000005860000-0x0000000005870000-memory.dmp
memory/4356-135-0x0000000005860000-0x0000000005870000-memory.dmp
memory/1612-136-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-137-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-138-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-142-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-143-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-144-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-145-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-146-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-148-0x0000020631750000-0x0000020631751000-memory.dmp
memory/1612-147-0x0000020631750000-0x0000020631751000-memory.dmp