Analysis
- max time kernel
148s - max time network
114s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
16/10/2026, 04:30
General
- Target jaffacakes118_Trojan-Spy.MSIL.Quasar.dzd.exe
- Size 2.1MB
- Sample261016-e4ybeshs9k
- SHA256 69956d237769fe359e2b3820abfb8ecc8dd047201a9fa7d074105c2f9557c8ab
Malware Config
Extracted
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quasar
-
1.3.0.0
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BOTNET
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orden-tamplierov.ddns.net:1604
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QSR_MUTEX_aKbAK5f3mYUV6cdMca
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encryption_key
SwuCDIynrbQUQArnczoL
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install_name
Client.exe
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key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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log_directory
Logs
-
reconnect_delay
3000
-
startup_key
svchoost
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 9 IoCs
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
- Checks BIOS information in registry 2 TTPs 6 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Executes dropped EXE 1 IoCs
- Identifies Wine through registry keys 2 TTPs 3 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 3 IoCs
- Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Spy.MSIL.Quasar.dzd.exe"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Spy.MSIL.Quasar.dzd.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "svchoost" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Spy.MSIL.Quasar.dzd.exe" /rl HIGHEST /f2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
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-
C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Spy.MSIL.Quasar.dzd.exeC:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Spy.MSIL.Quasar.dzd.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Client.exe
memory/1132-4-0x0000000007200000-0x0000000007292000-memory.dmp
memory/1132-13-0x00000000003A0000-0x00000000007B2000-memory.dmp
memory/1132-3-0x00000000076A0000-0x0000000007C5A000-memory.dmp
memory/1132-0-0x00000000003A0000-0x00000000007B2000-memory.dmp
memory/1132-5-0x00000000072A0000-0x0000000007306000-memory.dmp
memory/1132-6-0x0000000007F90000-0x0000000007FA2000-memory.dmp
memory/1132-7-0x0000000008640000-0x000000000867C000-memory.dmp
memory/1132-1-0x00000000003A0000-0x00000000007B2000-memory.dmp
memory/1132-2-0x00000000003A0000-0x00000000007B2000-memory.dmp
memory/2464-14-0x0000000000600000-0x0000000000A12000-memory.dmp
memory/2464-9-0x0000000000600000-0x0000000000A12000-memory.dmp
memory/2464-16-0x0000000000600000-0x0000000000A12000-memory.dmp
memory/2464-18-0x0000000000600000-0x0000000000A12000-memory.dmp
memory/3048-15-0x00000000003A0000-0x00000000007B2000-memory.dmp
memory/3048-12-0x00000000003A0000-0x00000000007B2000-memory.dmp
memory/3048-10-0x00000000003A0000-0x00000000007B2000-memory.dmp
memory/3048-20-0x00000000003A0000-0x00000000007B2000-memory.dmp