Analysis Overview
SHA256
d366619e696013333ed98b3aa03567638e56286ded05fb34da197481fa4d89fe
Threat Level: Known bad
The file 295f0a57a5e69b701359a80ed15ab338 was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Quasar RAT
Quasar payload
Suspicious use of SetThreadContext
Drops file in System32 directory
Unsigned PE
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-31 05:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-31 05:07
Reported
2024-01-05 15:29
Platform
win7-20231215-en
Max time kernel
145s
Max time network
125s
Command Line
Signatures
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1268429524-3929314613-1992311491-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\iSIdJ76se5U1r16o\\Q6Cs0Jb4eIcl.exe\",explorer.exe" | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe | N/A |
Quasar RAT
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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\SubDir\Client.exe | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe | N/A |
| File created | C:\Windows\SysWOW64\SubDir\Client.exe | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2480 set thread context of 2668 | N/A | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe
"C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe"
C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe
"C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Java Updater x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe" /rl HIGHEST /f
Network
Files
memory/2480-0-0x0000000000AD0000-0x0000000000B44000-memory.dmp
memory/2480-1-0x0000000074C50000-0x000000007533E000-memory.dmp
memory/2480-2-0x0000000002200000-0x0000000002240000-memory.dmp
memory/2480-3-0x0000000002200000-0x0000000002240000-memory.dmp
memory/2480-4-0x0000000000390000-0x00000000003E6000-memory.dmp
memory/2480-7-0x0000000002240000-0x00000000022C4000-memory.dmp
memory/2668-9-0x0000000000400000-0x0000000000484000-memory.dmp
memory/2668-11-0x0000000000400000-0x0000000000484000-memory.dmp
memory/2668-10-0x0000000000400000-0x0000000000484000-memory.dmp
memory/2668-16-0x0000000000400000-0x0000000000484000-memory.dmp
memory/2668-18-0x0000000000400000-0x0000000000484000-memory.dmp
memory/2668-20-0x0000000074C50000-0x000000007533E000-memory.dmp
memory/2668-14-0x0000000000400000-0x0000000000484000-memory.dmp
memory/2668-21-0x0000000004AD0000-0x0000000004B10000-memory.dmp
memory/2668-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2668-8-0x0000000000400000-0x0000000000484000-memory.dmp
memory/2480-23-0x0000000074C50000-0x000000007533E000-memory.dmp
memory/2480-24-0x0000000002200000-0x0000000002240000-memory.dmp
memory/2480-25-0x0000000002200000-0x0000000002240000-memory.dmp
memory/2668-26-0x0000000074C50000-0x000000007533E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-31 05:07
Reported
2024-01-05 15:29
Platform
win10v2004-20231222-en
Max time kernel
11s
Max time network
12s
Command Line
Signatures
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe
"C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe"
C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe
"C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe"
C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe
"C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Java Updater x64" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\295f0a57a5e69b701359a80ed15ab338.exe" /rl HIGHEST /f
C:\Windows\SysWOW64\SubDir\Client.exe
"C:\Windows\system32\SubDir\Client.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.136.104.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 167.109.18.2.in-addr.arpa | udp |
Files
memory/3192-0-0x0000000000520000-0x0000000000594000-memory.dmp
memory/3192-1-0x00000000745F0000-0x0000000074DA0000-memory.dmp
memory/3192-3-0x0000000004F70000-0x0000000005002000-memory.dmp
memory/3192-4-0x0000000005180000-0x0000000005190000-memory.dmp
memory/3192-5-0x0000000005140000-0x000000000514A000-memory.dmp
memory/3192-2-0x0000000005600000-0x0000000005BA4000-memory.dmp
memory/3192-6-0x00000000049B0000-0x0000000004A06000-memory.dmp
memory/1848-10-0x0000000000400000-0x0000000000484000-memory.dmp
memory/1848-13-0x0000000005460000-0x0000000005470000-memory.dmp
memory/1848-12-0x00000000745F0000-0x0000000074DA0000-memory.dmp
memory/3192-9-0x0000000009DE0000-0x0000000009E64000-memory.dmp
memory/1848-20-0x00000000745F0000-0x0000000074DA0000-memory.dmp
memory/1908-21-0x00000000055F0000-0x0000000005600000-memory.dmp
memory/1908-19-0x00000000745F0000-0x0000000074DA0000-memory.dmp
memory/1908-22-0x0000000006BD0000-0x0000000006C26000-memory.dmp