Analysis Overview
SHA256
acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c
Threat Level: Known bad
The file acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Executes dropped EXE
Checks computer location settings
Loads dropped DLL
Enumerates physical storage devices
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-06 01:47
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-06 01:47
Reported
2024-01-06 01:50
Platform
win7-20231129-en
Max time kernel
147s
Max time network
148s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\System.exe | N/A |
Loads dropped DLL
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\System.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\DllHost.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\System.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe
"C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe"
C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe
"C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\System.exe
"C:\Users\Admin\AppData\Roaming\SubDir\System.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 10.0.0.245:4782 | tcp | |
| N/A | 192.168.56.1:4782 | tcp | |
| CA | 99.247.192.130:4782 | tcp | |
| N/A | 10.0.0.245:4782 | tcp | |
| N/A | 192.168.56.1:4782 | tcp | |
| CA | 99.247.192.130:4782 | tcp | |
| N/A | 10.0.0.245:4782 | tcp | |
| N/A | 192.168.56.1:4782 | tcp | |
| CA | 99.247.192.130:4782 | tcp |
Files
memory/2120-20-0x00000000008A0000-0x0000000000BC4000-memory.dmp
memory/2120-21-0x000007FEF5120000-0x000007FEF5B0C000-memory.dmp
memory/2120-23-0x000000001AFF0000-0x000000001B070000-memory.dmp
memory/2148-7-0x0000000000920000-0x0000000000921000-memory.dmp
memory/2148-5-0x0000000000090000-0x0000000000092000-memory.dmp
memory/1840-4-0x0000000002440000-0x0000000002442000-memory.dmp
memory/2120-30-0x000007FEF5120000-0x000007FEF5B0C000-memory.dmp
memory/2492-31-0x000007FEF5120000-0x000007FEF5B0C000-memory.dmp
memory/2492-32-0x000000001AFE0000-0x000000001B060000-memory.dmp
memory/2492-29-0x0000000000AC0000-0x0000000000DE4000-memory.dmp
memory/2148-33-0x0000000000920000-0x0000000000921000-memory.dmp
memory/2492-34-0x000007FEF5120000-0x000007FEF5B0C000-memory.dmp
memory/2492-35-0x000000001AFE0000-0x000000001B060000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-06 01:47
Reported
2024-01-06 01:50
Platform
win10v2004-20231215-en
Max time kernel
7s
Max time network
128s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4548 wrote to memory of 2948 | N/A | C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe | C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe |
| PID 4548 wrote to memory of 2948 | N/A | C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe | C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe
"C:\Users\Admin\AppData\Local\Temp\acd6a1d56e317e7b5a69567f37eb669a7f7f34afcd37d6e42f14f52e970c6c4c.exe"
C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe
"C:\Users\Admin\AppData\Local\Temp\RarSFX0\System.exe"
C:\Users\Admin\AppData\Roaming\SubDir\System.exe
"C:\Users\Admin\AppData\Roaming\SubDir\System.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System.exe" /rl HIGHEST /f
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\System.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 1.181.190.20.in-addr.arpa | udp |
| US | 138.91.171.81:80 | tcp | |
| N/A | 10.0.0.245:4782 | tcp | |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| N/A | 192.168.56.1:4782 | tcp | |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| CA | 99.247.192.130:4782 | tcp | |
| US | 8.8.8.8:53 | 174.178.17.96.in-addr.arpa | udp |
| N/A | 10.0.0.245:4782 | tcp | |
| US | 20.231.121.79:80 | tcp | |
| CA | 99.247.192.130:4782 | tcp | |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 32.134.221.88.in-addr.arpa | udp |
Files
memory/2948-14-0x0000000000ED0000-0x00000000011F4000-memory.dmp
memory/2948-16-0x000000001BE40000-0x000000001BE50000-memory.dmp
memory/2948-15-0x00007FFD86810000-0x00007FFD872D1000-memory.dmp
memory/2948-24-0x00007FFD86810000-0x00007FFD872D1000-memory.dmp
memory/1148-25-0x00007FFD86810000-0x00007FFD872D1000-memory.dmp
memory/1148-26-0x000000001B550000-0x000000001B560000-memory.dmp
memory/1148-28-0x000000001BC60000-0x000000001BD12000-memory.dmp
memory/1148-27-0x000000001BB50000-0x000000001BBA0000-memory.dmp
memory/1148-29-0x00007FFD86810000-0x00007FFD872D1000-memory.dmp
memory/1148-30-0x000000001B550000-0x000000001B560000-memory.dmp