Analysis Overview
SHA256
6d03d6c26940eb9f2f6eaaa1d0a49d3f24a2941ec85bc7f12d3fb72162d780c8
Threat Level: Known bad
The file Client-built.exe was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Quasar family
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Creates scheduled task(s)
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Uses Task Scheduler COM API
Runs ping.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-12 15:22
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
2024-04-12 15:22
Reported
2024-04-12 15:23
Platform
win10-20240404-en
Max time kernel
19s
Max time network
20s
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\Roaming\SubDir\Google.exe.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 |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "AntimaIware Core Service" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "AntimaIware Core Service" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe" /rl HIGHEST /f
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /delete /tn "AntimaIware Core Service" /f
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\0cVCuv9jI9s7.bat" "
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\PING.EXE
ping -n 10 localhost
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | us1.localto.net | udp |
| US | 162.212.154.8:38905 | us1.localto.net | tcp |
| US | 8.8.8.8:53 | ipwho.is | udp |
| DE | 195.201.57.90:443 | ipwho.is | tcp |
| US | 8.8.8.8:53 | 8.154.212.162.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
Files
memory/3120-0-0x0000000000BD0000-0x0000000000EF4000-memory.dmp
memory/3120-1-0x00007FFBB4130000-0x00007FFBB4B1C000-memory.dmp
memory/3120-2-0x000000001BBB0000-0x000000001BBC0000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Google.exe.exe
| MD5 | 383aa601a1a3e6722935b017a215f4b8 |
| SHA1 | 3855b5d5ba3ba2f161bd6d60caac5415e93bd482 |
| SHA256 | 6d03d6c26940eb9f2f6eaaa1d0a49d3f24a2941ec85bc7f12d3fb72162d780c8 |
| SHA512 | ceff9701a5cbc5bc6d61d5ebf0764b54aa056bdb311789f4dec7065a0910050932024498d0ee3a0a7f6b3cce2e5b77ff89d132120a4581536aa33822684f10eb |
memory/3120-9-0x00007FFBB4130000-0x00007FFBB4B1C000-memory.dmp
memory/2764-10-0x00007FFBB4130000-0x00007FFBB4B1C000-memory.dmp
memory/2764-11-0x000000001C240000-0x000000001C290000-memory.dmp
memory/2764-12-0x000000001C350000-0x000000001C402000-memory.dmp
memory/2764-15-0x000000001C2C0000-0x000000001C2D2000-memory.dmp
memory/2764-16-0x000000001CE40000-0x000000001CE7E000-memory.dmp
memory/2764-21-0x00007FFBB4130000-0x00007FFBB4B1C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\0cVCuv9jI9s7.bat
| MD5 | 63d1fe662d6bfa45eb2a9a93d4d35b8b |
| SHA1 | 6693da4443f98ee47530b58c5e3a130beedf1971 |
| SHA256 | 231316589487353199f0a88a4387aede7cd578921916c8f8d9627490140334bd |
| SHA512 | e917ed85c3e789258a4bc140174e89045d9c056cf31b9b1cc0cb499f96bbdf4db008757a7c560a7a26695dfa5df423655fcb6aba32274aa2a64426a3845e36df |