Analysis Overview
SHA256
b19c884ff608ddcd01a1961791de3c8a4a058f7c17f23abec5a1aeb0ee2f44ff
Threat Level: Known bad
The file 10bb8284965045b7c9bc442e5ce1f184.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar RAT
Loads dropped DLL
Executes dropped EXE
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-05 11:55
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-05 11:55
Reported
2024-01-05 12:03
Platform
win7-20231129-en
Max time kernel
8s
Max time network
124s
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 |
| 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\Microsoft Offline.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1748 set thread context of 2196 | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Microsoft Offline" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe"
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Microsoft Offline" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
Files
memory/1748-0-0x0000000000BB0000-0x0000000000C62000-memory.dmp
memory/1748-1-0x0000000074680000-0x0000000074D6E000-memory.dmp
memory/1748-2-0x00000000049E0000-0x0000000004A20000-memory.dmp
memory/1748-3-0x0000000000310000-0x0000000000328000-memory.dmp
memory/2196-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2196-16-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2196-14-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2196-12-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2196-17-0x0000000074680000-0x0000000074D6E000-memory.dmp
memory/2196-18-0x0000000002410000-0x0000000002450000-memory.dmp
memory/2196-8-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2196-6-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2196-5-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2196-4-0x0000000000400000-0x000000000044E000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
| MD5 | d8ed600eb451d330548746c9739e746c |
| SHA1 | ae0f39c9aa16fd25cef43c37479b3a9d11eaa0e4 |
| SHA256 | cfb46b74bc48dea2e2b738e45de8b5ad98aef3b2a4b5a956c69b0a6fb2ee9261 |
| SHA512 | c4ad630c7bfaf78411363b1611cc8d5109e6b130b9aedf958aa90faa17c69d85c03a46549de5b90ec61d440274e49dcc2d9b25a1a560ab143b7855b132630a13 |
memory/2196-27-0x0000000074680000-0x0000000074D6E000-memory.dmp
memory/2728-26-0x0000000074680000-0x0000000074D6E000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
| MD5 | 6406ed076f9cfd13d57fa6be66aa6443 |
| SHA1 | 18e90e783f92db7df9ab614ae079b6f26654baf9 |
| SHA256 | e8f4849eca7d3272090a8c50228d60147d35cc36749749fe2b9ff3a60fb14233 |
| SHA512 | d995caaea5e521ce910b6c12c08cc1fabb25374ba45b685d5bf6685fe20276cb96da4b1b2451b15001defd3ea4e2b48e68500748d933399564068d4f8e0d37eb |
memory/2728-25-0x0000000000A70000-0x0000000000B22000-memory.dmp
\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
| MD5 | 8f8f887098f9ead151a095f7b314f03e |
| SHA1 | e723d6aebc009785c72f78f572182f20198c0772 |
| SHA256 | 2c4416df7a82c46fc1a69bf44bc82b8fb7524243532a013d78bd63d9aeab5fff |
| SHA512 | ef050ce89fa682cdc3ca06e9e114127331ffff2001399ea6e2e575eeca42908d57e38b5704aed563d4987452ceef8838d37c759b3557bfbcf9dc42499a678395 |
memory/2728-28-0x0000000004AB0000-0x0000000004AF0000-memory.dmp
memory/2512-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
| MD5 | 4199ceb863d4b3c11a31e34994a11a1a |
| SHA1 | 6f29c6923fa20c4df8f2303ad817a3e09cef3ed8 |
| SHA256 | cf223406d153ca86c3b2de3f5bd7518c0bc6c4760fbb6a8f4c82cb1f220a2fa7 |
| SHA512 | 2b80823650b132f29b0e7edad5bd5a77a663645e1a0eee508b867e702c93e4bc94c9da74ffff83b5993f445adbf918c5cb7033011387905a8c7be673db64718e |
memory/2512-41-0x0000000074680000-0x0000000074D6E000-memory.dmp
memory/1748-43-0x0000000074680000-0x0000000074D6E000-memory.dmp
memory/1748-44-0x00000000049E0000-0x0000000004A20000-memory.dmp
memory/2728-45-0x0000000074680000-0x0000000074D6E000-memory.dmp
memory/2728-46-0x0000000004AB0000-0x0000000004AF0000-memory.dmp
memory/2512-47-0x0000000074680000-0x0000000074D6E000-memory.dmp
memory/2512-48-0x0000000004950000-0x0000000004990000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-05 11:55
Reported
2024-01-05 12:04
Platform
win10v2004-20231215-en
Max time kernel
155s
Max time network
171s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| 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\Microsoft Offline.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft Offline = "\"C:\\Users\\Admin\\AppData\\Roaming\\SubDir\\Microsoft Offline.exe\"" | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2100 set thread context of 2116 | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe |
| PID 2344 set thread context of 2224 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe
"C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Microsoft Offline" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\10bb8284965045b7c9bc442e5ce1f184.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe"
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "Microsoft Offline" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.181.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 190.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 185.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| US | 8.8.8.8:53 | 4.173.189.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp | |
| N/A | 127.0.0.1:443 | tcp |
Files
memory/2100-0-0x0000000074E00000-0x00000000755B0000-memory.dmp
memory/2100-1-0x0000000000540000-0x00000000005F2000-memory.dmp
memory/2100-2-0x0000000074E00000-0x00000000755B0000-memory.dmp
memory/2100-3-0x00000000050F0000-0x000000000518C000-memory.dmp
memory/2100-4-0x0000000005240000-0x0000000005250000-memory.dmp
memory/2100-5-0x0000000005A00000-0x0000000005FA4000-memory.dmp
memory/2100-6-0x0000000005090000-0x00000000050A8000-memory.dmp
memory/2116-7-0x0000000000400000-0x000000000044E000-memory.dmp
memory/2116-8-0x0000000074E00000-0x00000000755B0000-memory.dmp
memory/2116-9-0x0000000005370000-0x0000000005402000-memory.dmp
memory/2116-10-0x0000000005330000-0x0000000005340000-memory.dmp
memory/2116-11-0x0000000005680000-0x00000000056E6000-memory.dmp
memory/2116-12-0x0000000006410000-0x0000000006422000-memory.dmp
memory/2100-13-0x0000000005240000-0x0000000005250000-memory.dmp
memory/2116-14-0x0000000006990000-0x00000000069CC000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Microsoft Offline.exe
| MD5 | 10bb8284965045b7c9bc442e5ce1f184 |
| SHA1 | 0ca24ca1e8d2f4a9fecaea0134233781cb57e125 |
| SHA256 | b19c884ff608ddcd01a1961791de3c8a4a058f7c17f23abec5a1aeb0ee2f44ff |
| SHA512 | 9802721432375befb67b83122eb0d1260db698c2a74c7d0aff15ed3da5f433aff2d3fafa66369b997586a7b79740108fb923eaf9caee7032ff98a165aaebc87a |
memory/2344-19-0x0000000074E00000-0x00000000755B0000-memory.dmp
memory/2344-20-0x0000000000330000-0x00000000003E2000-memory.dmp
memory/2116-22-0x0000000074E00000-0x00000000755B0000-memory.dmp
memory/2344-23-0x0000000002FC0000-0x0000000002FD0000-memory.dmp
memory/2224-26-0x0000000074E00000-0x00000000755B0000-memory.dmp
memory/2224-27-0x0000000005240000-0x0000000005250000-memory.dmp
memory/2224-29-0x0000000006AE0000-0x0000000006AEA000-memory.dmp
memory/2344-30-0x0000000074E00000-0x00000000755B0000-memory.dmp
memory/2344-31-0x0000000002FC0000-0x0000000002FD0000-memory.dmp
memory/2224-32-0x0000000074E00000-0x00000000755B0000-memory.dmp
memory/2224-33-0x0000000005240000-0x0000000005250000-memory.dmp