Analysis Overview
SHA256
b19c884ff608ddcd01a1961791de3c8a4a058f7c17f23abec5a1aeb0ee2f44ff
Threat Level: Known bad
The file 10bb8284965045b7c9bc442e5ce1f184 was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Executes dropped EXE
Loads dropped DLL
Looks up external IP address via web service
Suspicious use of SetThreadContext
Unsigned PE
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-30 06:10
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-30 06:10
Reported
2023-12-31 02:50
Platform
win7-20231129-en
Max time kernel
148s
Max time network
123s
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 |
| 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\Microsoft Offline.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2416 set thread context of 2520 | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe |
| PID 2544 set thread context of 2576 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Microsoft Offline" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe"
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Microsoft Offline" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp |
Files
memory/2416-1-0x0000000074AF0000-0x00000000751DE000-memory.dmp
memory/2416-0-0x00000000002A0000-0x0000000000352000-memory.dmp
memory/2416-2-0x0000000004B20000-0x0000000004B60000-memory.dmp
memory/2520-10-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2520-14-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2520-12-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2520-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2520-15-0x0000000074AF0000-0x00000000751DE000-memory.dmp
memory/2520-16-0x00000000045F0000-0x0000000004630000-memory.dmp
memory/2520-7-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2520-6-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2520-5-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2520-4-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2416-3-0x0000000000280000-0x0000000000298000-memory.dmp
memory/2544-25-0x0000000074AF0000-0x00000000751DE000-memory.dmp
memory/2520-24-0x0000000074AF0000-0x00000000751DE000-memory.dmp
memory/2544-23-0x0000000000BD0000-0x0000000000C82000-memory.dmp
memory/2544-26-0x0000000004960000-0x00000000049A0000-memory.dmp
memory/2576-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2576-41-0x0000000074AF0000-0x00000000751DE000-memory.dmp
memory/2416-43-0x0000000074AF0000-0x00000000751DE000-memory.dmp
memory/2416-44-0x0000000004B20000-0x0000000004B60000-memory.dmp
memory/2544-45-0x0000000074AF0000-0x00000000751DE000-memory.dmp
memory/2576-47-0x0000000074AF0000-0x00000000751DE000-memory.dmp
memory/2544-46-0x0000000004960000-0x00000000049A0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-30 06:10
Reported
2023-12-31 02:50
Platform
win10v2004-20231215-en
Max time kernel
4s
Max time network
148s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 448 set thread context of 2696 | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Microsoft Offline" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Microsoft Offline" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.171.91.138.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| US | 138.91.171.81:80 | tcp | |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 8.8.8.8:53 | 29.243.111.52.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 |
Files
memory/448-1-0x00000000747D0000-0x0000000074F80000-memory.dmp
memory/448-2-0x00000000051E0000-0x000000000527C000-memory.dmp
memory/448-0-0x0000000000AD0000-0x0000000000B82000-memory.dmp
memory/448-3-0x0000000005130000-0x0000000005140000-memory.dmp
memory/448-4-0x0000000005880000-0x0000000005E24000-memory.dmp
memory/448-5-0x00000000050E0000-0x00000000050F8000-memory.dmp
memory/2696-6-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2696-8-0x0000000004F20000-0x0000000004FB2000-memory.dmp
memory/2696-9-0x0000000004E50000-0x0000000004E60000-memory.dmp
memory/2696-7-0x00000000747D0000-0x0000000074F80000-memory.dmp
memory/2696-10-0x0000000004FC0000-0x0000000005026000-memory.dmp
memory/2696-11-0x0000000005D40000-0x0000000005D52000-memory.dmp
memory/4384-18-0x0000000000AE0000-0x0000000000B92000-memory.dmp
memory/4384-19-0x00000000747D0000-0x0000000074F80000-memory.dmp
memory/2696-20-0x00000000747D0000-0x0000000074F80000-memory.dmp
memory/2696-12-0x00000000063C0000-0x00000000063FC000-memory.dmp
memory/4384-21-0x0000000004FB0000-0x0000000004FC0000-memory.dmp
memory/3716-25-0x0000000005530000-0x0000000005540000-memory.dmp
memory/3716-24-0x00000000747D0000-0x0000000074F80000-memory.dmp
memory/448-26-0x00000000747D0000-0x0000000074F80000-memory.dmp
memory/3716-28-0x0000000006E10000-0x0000000006E1A000-memory.dmp
memory/448-29-0x0000000005130000-0x0000000005140000-memory.dmp
memory/4384-30-0x00000000747D0000-0x0000000074F80000-memory.dmp
memory/4384-31-0x0000000004FB0000-0x0000000004FC0000-memory.dmp
memory/3716-32-0x00000000747D0000-0x0000000074F80000-memory.dmp
memory/3716-33-0x0000000005530000-0x0000000005540000-memory.dmp
memory/448-34-0x0000000005130000-0x0000000005140000-memory.dmp
memory/448-35-0x0000000005130000-0x0000000005140000-memory.dmp