Analysis Overview
SHA256
0aadcb147077d657fd68e222689a25d93c40144d54922c83b4171a5e801235c5
Threat Level: Known bad
The file Client.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar RAT
Quasar payload
Checks computer location settings
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Creates scheduled task(s)
Runs ping.exe
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-14 13:50
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
2024-04-14 13:50
Reported
2024-04-14 13:54
Platform
win10-20240404-en
Max time kernel
134s
Max time network
136s
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\Windows\dllhostx64.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.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Boot Menu" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe
"C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Boot Menu" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe" /rl HIGHEST /f
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /delete /tn "Windows Boot Menu" /f
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\8gXGxH3HWzdY.bat" "
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\PING.EXE
ping -n 10 localhost
Network
| Country | Destination | Domain | Proto |
| GB | 140.238.91.110:34309 | tcp | |
| US | 8.8.8.8:53 | 110.91.238.140.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ipwho.is | udp |
| DE | 195.201.57.90:443 | ipwho.is | tcp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 106.246.116.51.in-addr.arpa | udp |
Files
memory/4296-0-0x00000000007C0000-0x0000000000AE4000-memory.dmp
memory/4296-1-0x00007FFD6FBC0000-0x00007FFD705AC000-memory.dmp
memory/4296-2-0x000000001B7E0000-0x000000001B7F0000-memory.dmp
C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe
| MD5 | 1109da1db2b4175b38ae1bc7c881db9a |
| SHA1 | 02b92b5e6aa54ae040bc5cd5e845287be01c9562 |
| SHA256 | 0aadcb147077d657fd68e222689a25d93c40144d54922c83b4171a5e801235c5 |
| SHA512 | 44cc1ee0e92159f4d41b4b1c9ae52a7b208b7888c5864795f1e815725d26677e2c7f4fce6410a8cfa8e07c8ee19c3f07f4110c64f1eca62d2f6bbf4cdda8f952 |
memory/4296-8-0x00007FFD6FBC0000-0x00007FFD705AC000-memory.dmp
memory/1656-9-0x00007FFD6FBC0000-0x00007FFD705AC000-memory.dmp
memory/1656-10-0x000000001AF30000-0x000000001AF40000-memory.dmp
memory/1656-11-0x000000001BBF0000-0x000000001BC40000-memory.dmp
memory/1656-12-0x000000001BD00000-0x000000001BDB2000-memory.dmp
memory/1656-15-0x000000001BC70000-0x000000001BC82000-memory.dmp
memory/1656-16-0x000000001C3F0000-0x000000001C42E000-memory.dmp
memory/1656-17-0x00007FFD6FBC0000-0x00007FFD705AC000-memory.dmp
memory/1656-18-0x000000001AF30000-0x000000001AF40000-memory.dmp
memory/1656-23-0x00007FFD6FBC0000-0x00007FFD705AC000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\8gXGxH3HWzdY.bat
| MD5 | f940aa548b2e28d4f5bc893f5f44e6a1 |
| SHA1 | 79dfdf13de4b2d0164f7b6bc133e878ea0ddf470 |
| SHA256 | 0a907e37abffb8dc1bc467fe49303d6b9fabaefcce258cf5b737160ed7b2ff78 |
| SHA512 | 08ff236c12a02f5dc2f4aa61af5bdd5df0c558924e6952eaae5ae943a4548680ef1b87cf53ce3761aa892abe66f9228b6cf8b775cb86533b3ffcd51b6ce3f488 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-14 13:50
Reported
2024-04-14 13:54
Platform
win10v2004-20240412-en
Max time kernel
93s
Max time network
138s
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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.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.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Boot Menu" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe
"C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Boot Menu" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe" /rl HIGHEST /f
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /delete /tn "Windows Boot Menu" /f
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\zQetchivhJ7H.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 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| GB | 140.238.91.110:34309 | 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 | 110.91.238.140.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.140.123.92.in-addr.arpa | udp |
Files
memory/2316-0-0x0000000000E90000-0x00000000011B4000-memory.dmp
memory/2316-1-0x00007FFA382A0000-0x00007FFA38D61000-memory.dmp
memory/2316-2-0x000000001C030000-0x000000001C040000-memory.dmp
C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe
| MD5 | 1109da1db2b4175b38ae1bc7c881db9a |
| SHA1 | 02b92b5e6aa54ae040bc5cd5e845287be01c9562 |
| SHA256 | 0aadcb147077d657fd68e222689a25d93c40144d54922c83b4171a5e801235c5 |
| SHA512 | 44cc1ee0e92159f4d41b4b1c9ae52a7b208b7888c5864795f1e815725d26677e2c7f4fce6410a8cfa8e07c8ee19c3f07f4110c64f1eca62d2f6bbf4cdda8f952 |
memory/2316-8-0x00007FFA382A0000-0x00007FFA38D61000-memory.dmp
memory/4536-9-0x00007FFA382A0000-0x00007FFA38D61000-memory.dmp
memory/4536-10-0x000000001B4B0000-0x000000001B4C0000-memory.dmp
memory/4536-11-0x000000001C110000-0x000000001C160000-memory.dmp
memory/4536-12-0x000000001C220000-0x000000001C2D2000-memory.dmp
memory/4536-13-0x000000001C180000-0x000000001C192000-memory.dmp
memory/4536-14-0x000000001C1E0000-0x000000001C21C000-memory.dmp
memory/4536-15-0x00007FFA382A0000-0x00007FFA38D61000-memory.dmp
memory/4536-16-0x000000001B4B0000-0x000000001B4C0000-memory.dmp
memory/4536-21-0x00007FFA382A0000-0x00007FFA38D61000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\zQetchivhJ7H.bat
| MD5 | 8d802fa906b51673297f3731a5c3c156 |
| SHA1 | 5697abe42f0f5c4993a2bba594e2ab28212478b3 |
| SHA256 | 7e2a870bd957452a5b0112ac55753baaacfde3891a6efe3ea905809152b13522 |
| SHA512 | 2572994767e5dc4061b15d2f67f47cf154e76324df657572ee4b6cff43eb274672012dd0ee0d3337271774e39f87f726a3905a2880019e959cd571e5af384d7b |
Analysis: behavioral3
Detonation Overview
Submitted
2024-04-14 13:50
Reported
2024-04-14 13:54
Platform
win11-20240412-en
Max time kernel
147s
Max time network
151s
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\Windows\dllhostx64.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.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Boot Menu" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe
"C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Boot Menu" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe" /rl HIGHEST /f
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /delete /tn "Windows Boot Menu" /f
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UofcyMV9JYEc.bat" "
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\PING.EXE
ping -n 10 localhost
Network
| Country | Destination | Domain | Proto |
| GB | 140.238.91.110:34309 | 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 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
Files
memory/4388-0-0x0000000000AB0000-0x0000000000DD4000-memory.dmp
memory/4388-1-0x00007FF8C6C30000-0x00007FF8C76F2000-memory.dmp
memory/4388-2-0x000000001BA60000-0x000000001BA70000-memory.dmp
C:\Users\Admin\AppData\Roaming\Windows\dllhostx64.exe
| MD5 | 1109da1db2b4175b38ae1bc7c881db9a |
| SHA1 | 02b92b5e6aa54ae040bc5cd5e845287be01c9562 |
| SHA256 | 0aadcb147077d657fd68e222689a25d93c40144d54922c83b4171a5e801235c5 |
| SHA512 | 44cc1ee0e92159f4d41b4b1c9ae52a7b208b7888c5864795f1e815725d26677e2c7f4fce6410a8cfa8e07c8ee19c3f07f4110c64f1eca62d2f6bbf4cdda8f952 |
memory/4388-8-0x00007FF8C6C30000-0x00007FF8C76F2000-memory.dmp
memory/4300-9-0x00007FF8C6C30000-0x00007FF8C76F2000-memory.dmp
memory/4300-10-0x000000001B3E0000-0x000000001B3F0000-memory.dmp
memory/4300-11-0x000000001C3C0000-0x000000001C410000-memory.dmp
memory/4300-12-0x000000001C4D0000-0x000000001C582000-memory.dmp
memory/4300-13-0x000000001C430000-0x000000001C442000-memory.dmp
memory/4300-14-0x000000001C490000-0x000000001C4CC000-memory.dmp
memory/4300-15-0x00007FF8C6C30000-0x00007FF8C76F2000-memory.dmp
memory/4300-16-0x000000001B3E0000-0x000000001B3F0000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\UofcyMV9JYEc.bat
| MD5 | 8f3ec340fecd690814b6525be23f661e |
| SHA1 | 825c874188b531c34ce9c684dbc72f45c6a8e20f |
| SHA256 | e67ed1a9cf1190a40b356307d9da05de7503a6bfa562f29b1f0711a2dd5f784a |
| SHA512 | 7cb7f175ccd13857d249ea2f566ca07c44cbc29ee6de45952bad96e13081e6b873ec5bb7ecbc3fb68254755af73d12d880a1a5fb1c9d1c1a790fdc825993cb3b |
memory/4300-22-0x00007FF8C6C30000-0x00007FF8C76F2000-memory.dmp