Analysis Overview
SHA256
425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff
Threat Level: Known bad
The file 425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar RAT
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-03 10:41
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-03 10:41
Reported
2023-12-03 10:44
Platform
win7-20231020-en
Max time kernel
129s
Max time network
141s
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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2356 set thread context of 828 | N/A | C:\Users\Admin\AppData\Local\Temp\425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.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\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\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 FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
Suspicious use of SendNotifyMessage
| 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:\Users\Admin\AppData\Local\Temp\425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe
"C:\Users\Admin\AppData\Local\Temp\425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Remove -ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name '';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name '' -Value '"C:\Users\Admin\AppData\Roaming\.exe"' -PropertyType 'String'
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | y20.ddns.net | udp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| US | 8.8.8.8:53 | y20.ddns.net | udp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
Files
memory/2356-0-0x00000000002C0000-0x00000000005EE000-memory.dmp
memory/2356-1-0x0000000074D90000-0x000000007547E000-memory.dmp
memory/2356-3-0x0000000004DF0000-0x0000000004E30000-memory.dmp
memory/828-6-0x0000000000400000-0x0000000000724000-memory.dmp
memory/828-8-0x0000000000400000-0x0000000000724000-memory.dmp
memory/828-10-0x0000000000400000-0x0000000000724000-memory.dmp
memory/828-11-0x0000000000400000-0x0000000000724000-memory.dmp
memory/828-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/828-14-0x0000000000400000-0x0000000000724000-memory.dmp
memory/828-17-0x0000000000400000-0x0000000000724000-memory.dmp
memory/2356-16-0x0000000074D90000-0x000000007547E000-memory.dmp
memory/828-19-0x0000000000400000-0x0000000000724000-memory.dmp
memory/2176-20-0x00000000710A0000-0x000000007164B000-memory.dmp
memory/2176-21-0x00000000710A0000-0x000000007164B000-memory.dmp
memory/2176-23-0x0000000002840000-0x0000000002880000-memory.dmp
memory/2176-24-0x0000000002840000-0x0000000002880000-memory.dmp
memory/2176-22-0x0000000002840000-0x0000000002880000-memory.dmp
memory/2176-25-0x00000000710A0000-0x000000007164B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-03 10:41
Reported
2023-12-03 10:44
Platform
win10v2004-20231127-en
Max time kernel
142s
Max time network
151s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1376 set thread context of 4840 | N/A | C:\Users\Admin\AppData\Local\Temp\425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\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 FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe | N/A |
Suspicious use of SendNotifyMessage
| 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:\Users\Admin\AppData\Local\Temp\425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe
"C:\Users\Admin\AppData\Local\Temp\425e3e4f280f19e1de7ced375ab0b31dbd2ffe49ed2684ecb140918d662d58ff.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Remove -ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name '';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name '' -Value '"C:\Users\Admin\AppData\Roaming\.exe"' -PropertyType 'String'
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 75.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 201.14.97.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 33.86.205.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | y20.ddns.net | udp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.101.122.92.in-addr.arpa | udp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| US | 8.8.8.8:53 | y20.ddns.net | udp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| RU | 194.147.140.241:5552 | y20.ddns.net | tcp |
| US | 8.8.8.8:53 | 3.173.189.20.in-addr.arpa | udp |
Files
memory/1376-0-0x00000000006C0000-0x00000000009EE000-memory.dmp
memory/1376-1-0x0000000075210000-0x00000000759C0000-memory.dmp
memory/1376-2-0x0000000005890000-0x0000000005E34000-memory.dmp
memory/1376-4-0x0000000005410000-0x0000000005420000-memory.dmp
memory/4420-5-0x0000000004BA0000-0x0000000004BD6000-memory.dmp
memory/4420-6-0x0000000075210000-0x00000000759C0000-memory.dmp
memory/4420-8-0x0000000005290000-0x00000000058B8000-memory.dmp
memory/4420-9-0x0000000004C50000-0x0000000004C60000-memory.dmp
memory/4840-10-0x0000000000400000-0x0000000000724000-memory.dmp
memory/4420-7-0x0000000004C50000-0x0000000004C60000-memory.dmp
memory/4840-13-0x0000000075210000-0x00000000759C0000-memory.dmp
memory/1376-12-0x0000000075210000-0x00000000759C0000-memory.dmp
memory/4840-14-0x0000000005330000-0x00000000053C2000-memory.dmp
memory/4420-15-0x00000000058F0000-0x0000000005912000-memory.dmp
memory/4840-22-0x0000000005320000-0x0000000005330000-memory.dmp
memory/4420-23-0x0000000005B70000-0x0000000005BD6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zzfym21e.ylx.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/4840-24-0x00000000052E0000-0x00000000052EA000-memory.dmp
memory/4420-16-0x0000000005A90000-0x0000000005AF6000-memory.dmp
memory/4420-29-0x0000000005BE0000-0x0000000005F34000-memory.dmp
memory/4420-30-0x0000000006190000-0x00000000061AE000-memory.dmp
memory/4420-31-0x0000000004EB0000-0x0000000004EFC000-memory.dmp
memory/4840-32-0x0000000006AF0000-0x0000000007108000-memory.dmp
memory/4840-33-0x0000000006680000-0x00000000066D0000-memory.dmp
memory/4840-34-0x00000000068E0000-0x0000000006992000-memory.dmp
memory/4420-35-0x0000000004C50000-0x0000000004C60000-memory.dmp
memory/4420-36-0x000000007F870000-0x000000007F880000-memory.dmp
memory/4420-37-0x0000000007150000-0x0000000007182000-memory.dmp
memory/4420-38-0x0000000070BC0000-0x0000000070C0C000-memory.dmp
memory/4420-48-0x0000000006740000-0x000000000675E000-memory.dmp
memory/4420-49-0x0000000007390000-0x0000000007433000-memory.dmp
memory/4420-50-0x0000000007AE0000-0x000000000815A000-memory.dmp
memory/4420-51-0x00000000074A0000-0x00000000074BA000-memory.dmp
memory/4420-52-0x0000000007510000-0x000000000751A000-memory.dmp
memory/4420-53-0x0000000007720000-0x00000000077B6000-memory.dmp
memory/4420-54-0x00000000076A0000-0x00000000076B1000-memory.dmp
memory/4420-55-0x00000000076D0000-0x00000000076DE000-memory.dmp
memory/4420-56-0x00000000076E0000-0x00000000076F4000-memory.dmp
memory/4420-57-0x00000000077E0000-0x00000000077FA000-memory.dmp
memory/4420-58-0x00000000077C0000-0x00000000077C8000-memory.dmp
memory/4420-59-0x0000000007820000-0x0000000007842000-memory.dmp
memory/4420-62-0x0000000075210000-0x00000000759C0000-memory.dmp
memory/4840-63-0x0000000075210000-0x00000000759C0000-memory.dmp
memory/4840-64-0x0000000005320000-0x0000000005330000-memory.dmp