Analysis
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max time kernel
150s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
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submitted
08-12-2024 15:45
General
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Target
file.exe
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Size
2.8MB
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MD5
a4de831aec191850ac5b336069ce3d40
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SHA1
df6263aae32913b94a1d45e9ba7f9124bcd5fe33
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SHA256
0217b5932fcaf4679b2d394d5dd2f10775774d9e7b2d0679d6aace357e085cf8
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SHA512
64dd2342b6f177b73be0d1ff2df5b1ab1dd12bc511e944345c60cc233e7812a01958a867bc05f3158312e3d5e20a7ce9bb1e1d7b87b37bef2f915e6b1e87d552
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SSDEEP
49152:AxNkorvlIxM2zCY45vnOvRN39ELjD7xY0hJQh4CQubvWhNcCv59fykXDBFOedq:srblIxMnY45vOpNNELjD7xFJQh/QWvWL
Malware Config
Extracted
quasar
1.4.1
vuictim
91.214.78.16:7000
42d886c4-74fa-480d-8b7e-5fe1ac03ba03
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encryption_key
D72F5D077DE4AC156A670D7D920C697F5FB66FA8
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Microsoft edge
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subdirectory
SubDir
Signatures
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Quasar RAT
Quasar is an open source Remote Access Tool.
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Quasar family
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Quasar payload 2 IoCs
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
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Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
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Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
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Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of FindShellTrayWindow 2 IoCs
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Suspicious use of SendNotifyMessage 2 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.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
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Microsoft edge" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
7.5MB
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Filesize
7.5MB
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Filesize
7.5MB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
40KB
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Filesize
6.1MB
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Filesize
320KB
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Filesize
712KB
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Filesize
72KB
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Filesize
240KB
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Filesize
408KB
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Filesize
7.5MB