Analysis Overview
SHA256
b2ae8c71e0a9040da348c8d3bf511343fc8c935336c79bb84c224ff8034d951d
Threat Level: Known bad
The file FCane.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar family
Quasar RAT
Executes dropped EXE
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious behavior: LoadsDriver
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-23 16:19
Signatures
Quasar family
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-23 16:19
Reported
2023-12-23 16:22
Platform
win7-20231215-en
Max time kernel
130s
Max time network
142s
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 |
| 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\Roaming\SubDir\Client.exe | N/A |
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\FCane.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\FCane.exe
"C:\Users\Admin\AppData\Local\Temp\FCane.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.0.107:4782 | tcp | |
| N/A | 192.168.13.1:4782 | tcp | |
| N/A | 192.168.8.101:4782 | tcp | |
| N/A | 192.168.0.107:4782 | tcp | |
| N/A | 192.168.13.1:4782 | tcp | |
| N/A | 192.168.8.101:4782 | tcp |
Files
memory/3028-0-0x0000000000060000-0x0000000000384000-memory.dmp
memory/3028-1-0x000007FEF5C00000-0x000007FEF65EC000-memory.dmp
memory/3028-2-0x000000001ACB0000-0x000000001AD30000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | b45b51072c87df94db667d1016cf274b |
| SHA1 | 3c2188740e079bd23375a32a9636e5d5c8e189f0 |
| SHA256 | 4d5cf8926ae2e22a37359f692ecb40092ea1a4ce781dfad574ef773bb0bf6ec2 |
| SHA512 | e1ebb219d30534639d41c4f938540010b2a765e866821453bcc1802ad9308ec514e7489f8b84a34d555a3d2d5d5602ee188db28434ff18ccdfbfbc02e9e61502 |
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 18d8af855f8e7c68826b7d7a97e61a19 |
| SHA1 | 0d20a1da8cce66e4358370d7825eb80a24355fa7 |
| SHA256 | 8758cbb9a5984c9150b695078d8a426888dffcf5d8297c378212e2e677803985 |
| SHA512 | 363c536509b1bb902d11ff396293149d1f5abfafa05090d82db8e904079ea2c8ef95d9fc5d4ee0e63cd63b850f60b13c732664bf93abb35cbd6c04da8c8eb6db |
memory/2128-8-0x0000000000EC0000-0x00000000011E4000-memory.dmp
memory/3028-9-0x000007FEF5C00000-0x000007FEF65EC000-memory.dmp
memory/2128-10-0x000000001B290000-0x000000001B310000-memory.dmp
memory/2128-7-0x000007FEF5C00000-0x000007FEF65EC000-memory.dmp
memory/2128-11-0x000007FEF5C00000-0x000007FEF65EC000-memory.dmp
memory/2128-12-0x000000001B290000-0x000000001B310000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-23 16:19
Reported
2023-12-23 16:21
Platform
win10v2004-20231215-en
Max time kernel
67s
Max time network
74s
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 |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
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 behavior: LoadsDriver
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\FCane.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3956 wrote to memory of 3268 | N/A | C:\Users\Admin\AppData\Local\Temp\FCane.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3956 wrote to memory of 3268 | N/A | C:\Users\Admin\AppData\Local\Temp\FCane.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3956 wrote to memory of 2008 | N/A | C:\Users\Admin\AppData\Local\Temp\FCane.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 3956 wrote to memory of 2008 | N/A | C:\Users\Admin\AppData\Local\Temp\FCane.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 2008 wrote to memory of 388 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2008 wrote to memory of 388 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\FCane.exe
"C:\Users\Admin\AppData\Local\Temp\FCane.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.53.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| N/A | 192.168.0.107:4782 | tcp | |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| 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 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| N/A | 192.168.13.1:4782 | tcp | |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.microsoft.com | udp |
| PH | 23.37.1.217:80 | www.microsoft.com | tcp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.1.37.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| N/A | 192.168.8.101:4782 | tcp | |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
Files
memory/3956-0-0x0000000000BD0000-0x0000000000EF4000-memory.dmp
memory/3956-1-0x00007FFD94720000-0x00007FFD951E1000-memory.dmp
memory/3956-2-0x000000001BDC0000-0x000000001BDD0000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | aae970faedab2169e5fda22a551af3c5 |
| SHA1 | 365a56f765d7427081b3ae67e4164c52b043770a |
| SHA256 | ec3701fbc582083c57b66d5697fc6abc45ccc04088c4b697b84e91c0854df4d6 |
| SHA512 | c3a1161a8dcd6bccf6d51305bb152b33440d9c300a9780b94b2cecc3342db1348e4e1cb2d99ef3423fd6c4cb489c4957de467f721afa4f28c8195ab9f6efb303 |
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 760b1ed876b1d18e8863c18629a90c28 |
| SHA1 | 7413206f112ee88f2001470fa840abe38f91faa7 |
| SHA256 | 9fcaf7d3e84a9c7297662aa105c0319e72d26685e7902ada5c779f18919babaf |
| SHA512 | d08ec82d213d912f48882395f9fcac6b651187fd17128ff295f619776c313c258fcc86b7e242a552e218dc90fcd6820ecb943617e21b0c208149712f3f1343c9 |
memory/2008-9-0x00007FFD94720000-0x00007FFD951E1000-memory.dmp
memory/3956-8-0x00007FFD94720000-0x00007FFD951E1000-memory.dmp
memory/2008-10-0x0000000000B10000-0x0000000000B20000-memory.dmp
memory/2008-11-0x000000001BC00000-0x000000001BC50000-memory.dmp
memory/2008-12-0x000000001BD10000-0x000000001BDC2000-memory.dmp
memory/2008-13-0x00007FFD94720000-0x00007FFD951E1000-memory.dmp
memory/2008-14-0x0000000000B10000-0x0000000000B20000-memory.dmp