Analysis Overview
SHA256
f75a45087aac828dd3f21760b5af31c5a83c7209a67645d5080c39129ff46488
Threat Level: Known bad
The file f75a45087aac828dd3f21760b5af31c5a83c7209a67645d5080c39129ff46488 was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar RAT
Quasar payload
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
Uses Task Scheduler COM API
Suspicious use of WriteProcessMemory
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Scheduled Task/Job: Scheduled Task
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-05 16:12
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 16:12
Reported
2024-08-05 16:15
Platform
win7-20240705-en
Max time kernel
149s
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 |
| 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 |
Files
memory/2368-0-0x000007FEF6243000-0x000007FEF6244000-memory.dmp
memory/2368-1-0x0000000000B10000-0x0000000000E34000-memory.dmp
memory/2368-2-0x000007FEF6240000-0x000007FEF6C2C000-memory.dmp
C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe
| MD5 | 14b871855a9046ef9aedeec80f9c2d86 |
| SHA1 | 32c0ad34f524748b76c090fc881b75b928341e7e |
| SHA256 | b14b916cd2f188ea09035489056e0bff9f8cb8e4a30eff50172f86319fabc940 |
| SHA512 | 7ada8280b9a5a4dcb427da5f7634335c191645614148ed550dbbbacfaed72e1e99202caedddc02f48dc73d96bf0ecd4d35c2ed2d6206e9b25efba4f29dcc8e96 |
memory/2548-8-0x000007FEF6240000-0x000007FEF6C2C000-memory.dmp
memory/2368-7-0x000007FEF6240000-0x000007FEF6C2C000-memory.dmp
memory/2548-9-0x0000000000CE0000-0x0000000001004000-memory.dmp
memory/2548-10-0x000007FEF6240000-0x000007FEF6C2C000-memory.dmp
memory/2548-11-0x000007FEF6240000-0x000007FEF6C2C000-memory.dmp
memory/2548-12-0x000007FEF6240000-0x000007FEF6C2C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-05 16:12
Reported
2024-08-05 16:15
Platform
win10v2004-20240802-en
Max time kernel
147s
Max time network
150s
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 4352 wrote to memory of 1804 | N/A | C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4352 wrote to memory of 1804 | N/A | C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4352 wrote to memory of 3632 | N/A | C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe |
| PID 4352 wrote to memory of 3632 | N/A | C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe |
| PID 3632 wrote to memory of 2120 | N/A | C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3632 wrote to memory of 2120 | 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 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.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 |
| 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 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.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 |
| US | 8.8.8.8:53 | 145.136.73.23.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 |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.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 |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
| DE | 193.161.193.99:34180 | wefdwef-34180.portmap.host | tcp |
Files
memory/4352-0-0x00007FFACEB53000-0x00007FFACEB55000-memory.dmp
memory/4352-1-0x0000000000710000-0x0000000000A34000-memory.dmp
memory/4352-2-0x00007FFACEB50000-0x00007FFACF611000-memory.dmp
C:\Users\Admin\AppData\Roaming\system32\Bootstrapper.exe
| MD5 | 14b871855a9046ef9aedeec80f9c2d86 |
| SHA1 | 32c0ad34f524748b76c090fc881b75b928341e7e |
| SHA256 | b14b916cd2f188ea09035489056e0bff9f8cb8e4a30eff50172f86319fabc940 |
| SHA512 | 7ada8280b9a5a4dcb427da5f7634335c191645614148ed550dbbbacfaed72e1e99202caedddc02f48dc73d96bf0ecd4d35c2ed2d6206e9b25efba4f29dcc8e96 |
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Bootstrapper.exe.log
| MD5 | baf55b95da4a601229647f25dad12878 |
| SHA1 | abc16954ebfd213733c4493fc1910164d825cac8 |
| SHA256 | ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924 |
| SHA512 | 24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545 |
memory/3632-9-0x00007FFACEB50000-0x00007FFACF611000-memory.dmp
memory/4352-10-0x00007FFACEB50000-0x00007FFACF611000-memory.dmp
memory/3632-11-0x00007FFACEB50000-0x00007FFACF611000-memory.dmp
memory/3632-13-0x000000001C470000-0x000000001C522000-memory.dmp
memory/3632-12-0x000000001C360000-0x000000001C3B0000-memory.dmp
memory/3632-14-0x00007FFACEB50000-0x00007FFACF611000-memory.dmp