Analysis Overview
SHA256
7869d203ee2ffc4d75d4d542cc2e3a970ca249d675e8bc7bd4f9cc85c80cab69
Threat Level: Known bad
The file client.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar family
Quasar RAT
Drops file in Drivers directory
Executes dropped EXE
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
Runs ping.exe
Creates scheduled task(s)
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-25 01:30
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
2024-05-25 01:30
Reported
2024-05-25 02:00
Platform
win10-20240404-en
Max time kernel
406s
Max time network
1592s
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 |
Drops file in Drivers directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\drivers\watchdog.exe | C:\Users\Admin\AppData\Local\Temp\client.exe | N/A |
| File opened for modification | C:\Windows\system32\drivers\watchdog.exe | C:\Users\Admin\AppData\Local\Temp\client.exe | N/A |
| File opened for modification | C:\Windows\system32\drivers\watchdog.exe | C:\Windows\system32\drivers\watchdog.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\drivers\watchdog.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\drivers | C:\Users\Admin\AppData\Local\Temp\client.exe | N/A |
| File opened for modification | C:\Windows\system32\drivers | C:\Windows\system32\drivers\watchdog.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:\Windows\system32\drivers\watchdog.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\drivers\watchdog.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 "watchdog" /sc ONLOGON /tr "C:\Windows\system32\drivers\watchdog.exe" /rl HIGHEST /f
C:\Windows\system32\drivers\watchdog.exe
"C:\Windows\system32\drivers\watchdog.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "watchdog" /sc ONLOGON /tr "C:\Windows\system32\drivers\watchdog.exe" /rl HIGHEST /f
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /delete /tn "watchdog" /f
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DgaxBjQgXIR0.bat" "
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\PING.EXE
ping -n 10 localhost
Network
| Country | Destination | Domain | Proto |
| CA | 142.115.43.39:8080 | 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 | 39.43.115.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 82.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.143.182.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
Files
memory/4700-0-0x00007FFDC0CF3000-0x00007FFDC0CF4000-memory.dmp
memory/4700-1-0x0000000000290000-0x00000000005B4000-memory.dmp
memory/4700-2-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp
C:\Windows\System32\drivers\watchdog.exe
| MD5 | 4dfff8420e0d2f3a0e30a3ae8e005830 |
| SHA1 | 379546834fa347bdcf6a4aa1a9d956b540d33b55 |
| SHA256 | 7869d203ee2ffc4d75d4d542cc2e3a970ca249d675e8bc7bd4f9cc85c80cab69 |
| SHA512 | 6f4de859019a9ed236f6ddcbb03737c9e643368ae74fea3b36f7254a1b691448fb5f5befe4997554ed96f099309908f6b0a42d46161d3727d07620b1ecca94cb |
memory/4700-9-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp
memory/1084-10-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp
memory/1084-11-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp
memory/1084-12-0x000000001B760000-0x000000001B7B0000-memory.dmp
memory/1084-13-0x000000001B870000-0x000000001B922000-memory.dmp
memory/1084-16-0x000000001B810000-0x000000001B822000-memory.dmp
memory/1084-17-0x000000001BF60000-0x000000001BF9E000-memory.dmp
memory/1084-18-0x000000001C7D0000-0x000000001CCF6000-memory.dmp
memory/1084-20-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp
memory/1084-29-0x00007FFDC0CF0000-0x00007FFDC16DC000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\DgaxBjQgXIR0.bat
| MD5 | f4e2e62945b1d8cd38c15e9ddca594a4 |
| SHA1 | 48ea069f686c869bb1ea53ba8bfd6eb344d183b1 |
| SHA256 | bc4932e210ebd8a2f3745339933ac68330ccdc2eeb24ad2dba37aadf7da9afae |
| SHA512 | f163ba72e6c6fa461ef0f4e77324aa5f876967ec05e41bebd18704defaeeb2043c844a64006840f47b4626eefca926be27f2b38757656bb066afdc5aa914fbdf |