Analysis Overview
SHA256
28174e01123c6a52e6d47655dfa108384a81d0cccdbd94843689ba08be928453
Threat Level: Known bad
The file Rat.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar RAT
Quasar family
Executes dropped EXE
Unsigned PE
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-12 13:10
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: behavioral2
Detonation Overview
Submitted
2024-05-12 13:10
Reported
2024-05-12 13:11
Platform
win10v2004-20240508-en
Max time kernel
43s
Max time network
43s
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\Client.exe | N/A |
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 |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1668 wrote to memory of 1560 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1668 wrote to memory of 1560 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1668 wrote to memory of 5096 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 1668 wrote to memory of 5096 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 5096 wrote to memory of 4332 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 5096 wrote to memory of 4332 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Rat.exe
"C:\Users\Admin\AppData\Local\Temp\Rat.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.170:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 77.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 170.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| NL | 23.62.61.170:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| N/A | 192.168.178.159:4782 | tcp | |
| N/A | 192.168.178.159:4782 | tcp | |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.121.18.2.in-addr.arpa | udp |
Files
memory/1668-0-0x00007FFE83653000-0x00007FFE83655000-memory.dmp
memory/1668-1-0x0000000000970000-0x0000000000C94000-memory.dmp
memory/1668-2-0x00007FFE83650000-0x00007FFE84111000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 9fb2e5556886a91ed7805b9d835defd2 |
| SHA1 | 4b54c11066f327c76f09b8de64715fee3f02fd34 |
| SHA256 | 28174e01123c6a52e6d47655dfa108384a81d0cccdbd94843689ba08be928453 |
| SHA512 | e9dd5e7b7c0ff5406ca23c17bf6451c717391b0f8fc5ff54809ed552b41a1e7d71bbd6128cbf570976b2a48299cc72625d6d485960256009df33a6d80810ba54 |
memory/1668-9-0x00007FFE83650000-0x00007FFE84111000-memory.dmp
memory/5096-10-0x00007FFE83650000-0x00007FFE84111000-memory.dmp
memory/5096-11-0x00007FFE83650000-0x00007FFE84111000-memory.dmp
memory/5096-12-0x000000001BC20000-0x000000001BC70000-memory.dmp
memory/5096-13-0x000000001BD30000-0x000000001BDE2000-memory.dmp
memory/5096-14-0x00007FFE83650000-0x00007FFE84111000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-05-12 13:10
Reported
2024-05-12 13:11
Platform
win11-20240426-en
Max time kernel
34s
Max time network
44s
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\Client.exe | N/A |
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 |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3308 wrote to memory of 3656 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3308 wrote to memory of 3656 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3308 wrote to memory of 3948 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 3308 wrote to memory of 3948 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 3948 wrote to memory of 4628 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3948 wrote to memory of 4628 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Rat.exe
"C:\Users\Admin\AppData\Local\Temp\Rat.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.178.159:4782 | tcp | |
| N/A | 192.168.178.159:4782 | tcp | |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
Files
memory/3308-0-0x00007FFF0D8F3000-0x00007FFF0D8F5000-memory.dmp
memory/3308-1-0x0000000000B30000-0x0000000000E54000-memory.dmp
memory/3308-2-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 9fb2e5556886a91ed7805b9d835defd2 |
| SHA1 | 4b54c11066f327c76f09b8de64715fee3f02fd34 |
| SHA256 | 28174e01123c6a52e6d47655dfa108384a81d0cccdbd94843689ba08be928453 |
| SHA512 | e9dd5e7b7c0ff5406ca23c17bf6451c717391b0f8fc5ff54809ed552b41a1e7d71bbd6128cbf570976b2a48299cc72625d6d485960256009df33a6d80810ba54 |
memory/3948-10-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp
memory/3308-9-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp
memory/3948-11-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp
memory/3948-12-0x000000001B7D0000-0x000000001B820000-memory.dmp
memory/3948-13-0x000000001C310000-0x000000001C3C2000-memory.dmp
memory/3948-14-0x00007FFF0D8F0000-0x00007FFF0E3B2000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-12 13:10
Reported
2024-05-12 13:11
Platform
win10-20240404-en
Max time kernel
29s
Max time network
37s
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\Client.exe | N/A |
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 |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3220 wrote to memory of 4000 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3220 wrote to memory of 4000 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3220 wrote to memory of 4372 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 3220 wrote to memory of 4372 | N/A | C:\Users\Admin\AppData\Local\Temp\Rat.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 4372 wrote to memory of 2132 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4372 wrote to memory of 2132 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Rat.exe
"C:\Users\Admin\AppData\Local\Temp\Rat.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.178.159:4782 | tcp | |
| N/A | 192.168.178.159:4782 | tcp |
Files
memory/3220-0-0x00007FF80AF13000-0x00007FF80AF14000-memory.dmp
memory/3220-1-0x0000000000120000-0x0000000000444000-memory.dmp
memory/3220-2-0x00007FF80AF10000-0x00007FF80B8FC000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 9fb2e5556886a91ed7805b9d835defd2 |
| SHA1 | 4b54c11066f327c76f09b8de64715fee3f02fd34 |
| SHA256 | 28174e01123c6a52e6d47655dfa108384a81d0cccdbd94843689ba08be928453 |
| SHA512 | e9dd5e7b7c0ff5406ca23c17bf6451c717391b0f8fc5ff54809ed552b41a1e7d71bbd6128cbf570976b2a48299cc72625d6d485960256009df33a6d80810ba54 |
memory/3220-9-0x00007FF80AF10000-0x00007FF80B8FC000-memory.dmp
memory/4372-10-0x00007FF80AF10000-0x00007FF80B8FC000-memory.dmp
memory/4372-11-0x00007FF80AF10000-0x00007FF80B8FC000-memory.dmp
memory/4372-12-0x000000001BAC0000-0x000000001BB10000-memory.dmp
memory/4372-13-0x000000001BBD0000-0x000000001BC82000-memory.dmp
memory/4372-14-0x00007FF80AF10000-0x00007FF80B8FC000-memory.dmp