Analysis Overview
SHA256
b14b916cd2f188ea09035489056e0bff9f8cb8e4a30eff50172f86319fabc940
Threat Level: Known bad
The file Bootstrapper.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Uses Task Scheduler COM API
Suspicious use of SendNotifyMessage
Suspicious use of FindShellTrayWindow
Scheduled Task/Job: Scheduled Task
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-05 15:10
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
2024-08-05 15:10
Reported
2024-08-05 15:12
Platform
win7-20240704-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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Enumerates physical storage devices
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\Bootstrapper.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe
"C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | wefdwef-34180.portmap.host | udp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
Files
memory/2240-0-0x000007FEF5643000-0x000007FEF5644000-memory.dmp
memory/2240-1-0x0000000001290000-0x00000000015B4000-memory.dmp
memory/2240-2-0x000007FEF5640000-0x000007FEF602C000-memory.dmp
C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe
| MD5 | 14b871855a9046ef9aedeec80f9c2d86 |
| SHA1 | 32c0ad34f524748b76c090fc881b75b928341e7e |
| SHA256 | b14b916cd2f188ea09035489056e0bff9f8cb8e4a30eff50172f86319fabc940 |
| SHA512 | 7ada8280b9a5a4dcb427da5f7634335c191645614148ed550dbbbacfaed72e1e99202caedddc02f48dc73d96bf0ecd4d35c2ed2d6206e9b25efba4f29dcc8e96 |
memory/2768-7-0x000007FEF5640000-0x000007FEF602C000-memory.dmp
memory/2768-8-0x00000000011A0000-0x00000000014C4000-memory.dmp
memory/2240-9-0x000007FEF5640000-0x000007FEF602C000-memory.dmp
memory/2768-10-0x000007FEF5640000-0x000007FEF602C000-memory.dmp
memory/2768-11-0x000007FEF5640000-0x000007FEF602C000-memory.dmp
memory/2768-12-0x000007FEF5640000-0x000007FEF602C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-05 15:10
Reported
2024-08-05 15:12
Platform
win10v2004-20240802-en
Max time kernel
133s
Max time network
145s
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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Enumerates physical storage devices
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\Bootstrapper.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4596 wrote to memory of 5044 | N/A | C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4596 wrote to memory of 5044 | N/A | C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4596 wrote to memory of 2516 | N/A | C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe |
| PID 4596 wrote to memory of 2516 | N/A | C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe |
| PID 2516 wrote to memory of 1684 | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2516 wrote to memory of 1684 | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe
"C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Spotify" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | wefdwef-34180.portmap.host | udp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.142.123.92.in-addr.arpa | udp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| US | 8.8.8.8:53 | 25.140.123.92.in-addr.arpa | udp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
Files
memory/4596-0-0x00007FFCCD6A3000-0x00007FFCCD6A5000-memory.dmp
memory/4596-1-0x00000000006C0000-0x00000000009E4000-memory.dmp
memory/4596-2-0x00007FFCCD6A0000-0x00007FFCCE161000-memory.dmp
C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe
| MD5 | 14b871855a9046ef9aedeec80f9c2d86 |
| SHA1 | 32c0ad34f524748b76c090fc881b75b928341e7e |
| SHA256 | b14b916cd2f188ea09035489056e0bff9f8cb8e4a30eff50172f86319fabc940 |
| SHA512 | 7ada8280b9a5a4dcb427da5f7634335c191645614148ed550dbbbacfaed72e1e99202caedddc02f48dc73d96bf0ecd4d35c2ed2d6206e9b25efba4f29dcc8e96 |
memory/2516-9-0x00007FFCCD6A0000-0x00007FFCCE161000-memory.dmp
memory/4596-10-0x00007FFCCD6A0000-0x00007FFCCE161000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Bootstrapper.exe.log
| MD5 | baf55b95da4a601229647f25dad12878 |
| SHA1 | abc16954ebfd213733c4493fc1910164d825cac8 |
| SHA256 | ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924 |
| SHA512 | 24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545 |
memory/2516-11-0x00007FFCCD6A0000-0x00007FFCCE161000-memory.dmp
memory/2516-12-0x000000001C9D0000-0x000000001CA20000-memory.dmp
memory/2516-13-0x000000001CAE0000-0x000000001CB92000-memory.dmp
memory/2516-14-0x00007FFCCD6A0000-0x00007FFCCE161000-memory.dmp