Analysis Overview
SHA256
ef33af6a7f06d5dae8dd1da0412b795e1222bfd6ce447614c5cac912bcd3374d
Threat Level: Known bad
The file Payload.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar family
Quasar RAT
Checks computer location settings
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Modifies data under HKEY_USERS
Suspicious use of SetWindowsHookEx
Scheduled Task/Job: Scheduled Task
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-12-13 20:53
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
2024-12-13 20:53
Reported
2024-12-13 20:58
Platform
win10v2004-20241007-en
Max time kernel
41s
Max time network
42s
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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Enumerates physical storage devices
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" | C:\Windows\system32\LogonUI.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" | C:\Windows\system32\LogonUI.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "59" | C:\Windows\system32\LogonUI.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent | C:\Windows\system32\LogonUI.exe | N/A |
| Set value (int) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" | C:\Windows\system32\LogonUI.exe | N/A |
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 use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Payload.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\System32\shutdown.exe | N/A |
| Token: SeRemoteShutdownPrivilege | N/A | C:\Windows\System32\shutdown.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Windows\system32\LogonUI.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Payload.exe
"C:\Users\Admin\AppData\Local\Temp\Payload.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /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 "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\System32\shutdown.exe
"C:\Windows\System32\shutdown.exe" /r /t 0
C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa38c1855 /state1:0x41c64e6d
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 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ukrainian.zapto.org | udp |
| FR | 51.91.146.93:5552 | ukrainian.zapto.org | tcp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.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 | 93.146.91.51.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 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | 13.173.189.20.in-addr.arpa | udp |
Files
memory/744-0-0x00007FFB476E3000-0x00007FFB476E5000-memory.dmp
memory/744-1-0x0000000000550000-0x0000000000874000-memory.dmp
memory/744-2-0x00007FFB476E0000-0x00007FFB481A1000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | b0f4ccdba9627855a58b6f2f1673a3da |
| SHA1 | bb39bbd34084efdf4d0a994fba6419819d68c766 |
| SHA256 | ef33af6a7f06d5dae8dd1da0412b795e1222bfd6ce447614c5cac912bcd3374d |
| SHA512 | 7af9f641349e406b4d4079580247e72e566ee142028086225b0469ca545e064d365d4aad01d261711b7692a1c0130c7af9f875a56b026d39cb4ed86d2844c2b6 |
memory/4392-9-0x00007FFB476E0000-0x00007FFB481A1000-memory.dmp
memory/744-8-0x00007FFB476E0000-0x00007FFB481A1000-memory.dmp
memory/4392-10-0x00007FFB476E0000-0x00007FFB481A1000-memory.dmp
memory/4392-11-0x000000001C2F0000-0x000000001C340000-memory.dmp
memory/4392-12-0x000000001C400000-0x000000001C4B2000-memory.dmp
memory/4392-15-0x000000001C380000-0x000000001C392000-memory.dmp
memory/4392-16-0x000000001D000000-0x000000001D03C000-memory.dmp
memory/4392-17-0x00007FFB476E0000-0x00007FFB481A1000-memory.dmp
memory/4392-19-0x00007FFB476E0000-0x00007FFB481A1000-memory.dmp