Analysis Overview
SHA256
85af420868f937e1d70898ef30664bb62cf3da9eea467191d407eb1f418a67b7
Threat Level: Known bad
The file celex.exe was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Quasar family
Executes dropped EXE
Drops file in Windows directory
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Unsigned PE
Office loads VBA resources, possible macro or embedded object present
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Scheduled Task/Job: Scheduled Task
Uses Task Scheduler COM API
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-09 20:32
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
2024-11-09 20:32
Reported
2024-11-09 20:35
Platform
win7-20240729-en
Max time kernel
146s
Max time network
148s
Command Line
Signatures
Quasar RAT
Quasar family
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\clnt\clnt.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Debug\WIA\wiatrace.log | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
Office loads VBA resources, possible macro or embedded object present
Scheduled Task/Job: Scheduled Task
| 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: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\celex.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\celex.exe
"C:\Users\Admin\AppData\Local\Temp\celex.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "clnt" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\clnt\clnt.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\clnt\clnt.exe
"C:\Users\Admin\AppData\Roaming\clnt\clnt.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "clnt" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\clnt\clnt.exe" /rl HIGHEST /f
C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\Desktop\UninstallRedo.docx"
C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | xxvvsn-26169.portmap.host | udp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | tcp |
Files
memory/2500-0-0x000007FEF5EC3000-0x000007FEF5EC4000-memory.dmp
memory/2500-1-0x0000000000EF0000-0x0000000001214000-memory.dmp
memory/2500-2-0x000007FEF5EC0000-0x000007FEF68AC000-memory.dmp
C:\Users\Admin\AppData\Roaming\clnt\clnt.exe
| MD5 | e97bf71664c901e2dd3b02c158d14cc7 |
| SHA1 | 75827ff9fefcd7bab397d6a7af15f3093e38d1c6 |
| SHA256 | 85af420868f937e1d70898ef30664bb62cf3da9eea467191d407eb1f418a67b7 |
| SHA512 | 532b0dcb2027cafb2a568c692360589d855b8c36bcd22b7dfb92c7b71b437e03dc26a55da0c3d0163b3286b9b63980e30d5ebb4d7e5fa6dd2ed3f1aba5f09476 |
memory/1932-8-0x000007FEF5EC0000-0x000007FEF68AC000-memory.dmp
memory/2500-10-0x000007FEF5EC0000-0x000007FEF68AC000-memory.dmp
memory/1932-9-0x0000000000DF0000-0x0000000001114000-memory.dmp
memory/1932-11-0x000007FEF5EC0000-0x000007FEF68AC000-memory.dmp
memory/1932-12-0x000007FEF5EC0000-0x000007FEF68AC000-memory.dmp
memory/2396-13-0x000000005FFF0000-0x0000000060000000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex
| MD5 | f3b25701fe362ec84616a93a45ce9998 |
| SHA1 | d62636d8caec13f04e28442a0a6fa1afeb024bbb |
| SHA256 | b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209 |
| SHA512 | 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-09 20:32
Reported
2024-11-09 20:35
Platform
win10v2004-20241007-en
Max time kernel
142s
Max time network
142s
Command Line
Signatures
Quasar RAT
Quasar family
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\clnt\clnt.exe | N/A |
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
| 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: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\celex.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | N/A |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4812 wrote to memory of 1640 | N/A | C:\Users\Admin\AppData\Local\Temp\celex.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4812 wrote to memory of 1640 | N/A | C:\Users\Admin\AppData\Local\Temp\celex.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4812 wrote to memory of 3888 | N/A | C:\Users\Admin\AppData\Local\Temp\celex.exe | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe |
| PID 4812 wrote to memory of 3888 | N/A | C:\Users\Admin\AppData\Local\Temp\celex.exe | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe |
| PID 3888 wrote to memory of 672 | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3888 wrote to memory of 672 | N/A | C:\Users\Admin\AppData\Roaming\clnt\clnt.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\celex.exe
"C:\Users\Admin\AppData\Local\Temp\celex.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "clnt" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\clnt\clnt.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\clnt\clnt.exe
"C:\Users\Admin\AppData\Roaming\clnt\clnt.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "clnt" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\clnt\clnt.exe" /rl HIGHEST /f
C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\SendMeasure.mp3"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | xxvvsn-26169.portmap.host | udp |
| DE | 193.161.193.99:26169 | xxvvsn-26169.portmap.host | 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 | 99.193.161.193.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
Files
memory/4812-0-0x00007FFC27113000-0x00007FFC27115000-memory.dmp
memory/4812-1-0x00000000007E0000-0x0000000000B04000-memory.dmp
memory/4812-2-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp
C:\Users\Admin\AppData\Roaming\clnt\clnt.exe
| MD5 | e97bf71664c901e2dd3b02c158d14cc7 |
| SHA1 | 75827ff9fefcd7bab397d6a7af15f3093e38d1c6 |
| SHA256 | 85af420868f937e1d70898ef30664bb62cf3da9eea467191d407eb1f418a67b7 |
| SHA512 | 532b0dcb2027cafb2a568c692360589d855b8c36bcd22b7dfb92c7b71b437e03dc26a55da0c3d0163b3286b9b63980e30d5ebb4d7e5fa6dd2ed3f1aba5f09476 |
memory/4812-10-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp
memory/3888-9-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp
memory/3888-11-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp
memory/3888-12-0x000000001BC80000-0x000000001BCD0000-memory.dmp
memory/3888-13-0x000000001BD90000-0x000000001BE42000-memory.dmp
memory/3888-16-0x000000001BD10000-0x000000001BD22000-memory.dmp
memory/3888-17-0x000000001C490000-0x000000001C4CC000-memory.dmp
memory/3888-18-0x00007FFC27110000-0x00007FFC27BD1000-memory.dmp
memory/3888-19-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-25-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/1012-39-0x00007FFC21EA0000-0x00007FFC21ED4000-memory.dmp
memory/1012-38-0x00007FF6D17B0000-0x00007FF6D18A8000-memory.dmp
memory/1012-40-0x00007FFC209F0000-0x00007FFC20CA6000-memory.dmp
memory/1012-41-0x00007FFC19810000-0x00007FFC1A8C0000-memory.dmp
memory/3888-42-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-43-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-44-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-45-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-46-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-47-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-48-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-49-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-51-0x000000001C7D0000-0x000000001C979000-memory.dmp
memory/3888-52-0x000000001C7D0000-0x000000001C979000-memory.dmp