Analysis Overview
SHA256
9b4870baf1a6e62580daceb460672b03cc4c002267686340969fd55aab71bbd7
Threat Level: Known bad
The file Client-built.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar family
Quasar RAT
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Modifies system certificate store
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-14 06:14
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
2024-06-14 06:14
Reported
2024-06-14 06:16
Platform
win7-20231129-en
Max time kernel
149s
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 |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1884 wrote to memory of 3020 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 1884 wrote to memory of 3020 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 1884 wrote to memory of 3020 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | nexosmith1231-54169.portmap.host | udp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
Files
memory/1884-0-0x000007FEF56E3000-0x000007FEF56E4000-memory.dmp
memory/1884-1-0x00000000000C0000-0x00000000003E4000-memory.dmp
memory/1884-2-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | cb9e331e962b60a93e14496d120515b3 |
| SHA1 | 51ecbe795ea6e156c061dd91afc2c1bc6e8adcb4 |
| SHA256 | 9b4870baf1a6e62580daceb460672b03cc4c002267686340969fd55aab71bbd7 |
| SHA512 | 6b9b6294de1308ebc902f48f4d3de77afef27a45d5eb6cffa256a765d6b22d09184411bed0029420379f4fd22c4b137c0b6d12ef97d4a7b18d59d7ea6a2317ef |
memory/3020-7-0x0000000000B90000-0x0000000000EB4000-memory.dmp
memory/3020-8-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp
memory/3020-10-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp
memory/1884-9-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp
memory/3020-11-0x000007FEF56E0000-0x000007FEF60CC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-14 06:14
Reported
2024-06-14 06:16
Platform
win10v2004-20240611-en
Max time kernel
147s
Max time network
149s
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\SubDir\Client.exe | N/A |
Enumerates physical storage devices
Modifies system certificate store
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| Set value (data) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3224 wrote to memory of 4000 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 3224 wrote to memory of 4000 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1040,i,15316930299780304231,7592852768794498680,262144 --variations-seed-version --mojo-platform-channel-handle=4440 /prefetch:8
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 138.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 17.24.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | nexosmith1231-54169.portmap.host | udp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ipwho.is | udp |
| DE | 195.201.57.90:443 | ipwho.is | tcp |
| US | 8.8.8.8:53 | 99.193.161.193.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
| DE | 193.161.193.99:54169 | nexosmith1231-54169.portmap.host | tcp |
Files
memory/3224-0-0x00007FFED6883000-0x00007FFED6885000-memory.dmp
memory/3224-1-0x00000000003D0000-0x00000000006F4000-memory.dmp
memory/3224-2-0x00007FFED6880000-0x00007FFED7341000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | cb9e331e962b60a93e14496d120515b3 |
| SHA1 | 51ecbe795ea6e156c061dd91afc2c1bc6e8adcb4 |
| SHA256 | 9b4870baf1a6e62580daceb460672b03cc4c002267686340969fd55aab71bbd7 |
| SHA512 | 6b9b6294de1308ebc902f48f4d3de77afef27a45d5eb6cffa256a765d6b22d09184411bed0029420379f4fd22c4b137c0b6d12ef97d4a7b18d59d7ea6a2317ef |
memory/4000-8-0x00007FFED6880000-0x00007FFED7341000-memory.dmp
memory/4000-9-0x00007FFED6880000-0x00007FFED7341000-memory.dmp
memory/4000-10-0x000000001C490000-0x000000001C4E0000-memory.dmp
memory/4000-11-0x000000001C5A0000-0x000000001C652000-memory.dmp
memory/4000-12-0x000000001C460000-0x000000001C472000-memory.dmp
memory/4000-13-0x000000001C520000-0x000000001C55C000-memory.dmp
memory/3224-14-0x00007FFED6880000-0x00007FFED7341000-memory.dmp
memory/4000-15-0x00007FFED6880000-0x00007FFED7341000-memory.dmp
memory/4000-16-0x00007FFED6880000-0x00007FFED7341000-memory.dmp