Analysis
- max time kernel
149s - max time network
148s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
- submitted
29/05/2026, 21:13
General
- Target Pulsar-Client.exe
- Size 956KB
- Sample260529-z21c8aex2x
- SHA256 ae3d473736223a4eb41da2a1f53c3370a5f1a2a4a0f34a884ed3fdce87b77d63
Score
10/10
Malware Config
Extracted
Family
-
quasar
Attributes
-
encryption_key
0AA65F79CC9CE1541AA13444F27C0AB2D03101BF
-
key_salt
5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382
-
reconnect_delay
3000
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
- Looks for VMWare Tools registry key 2 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
- Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
- Enumerates system info in registry 2 TTPs 4 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Pulsar-Client.exe"C:\Users\Admin\AppData\Local\Temp\Pulsar-Client.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks for VirtualBox DLLs, possible anti-VM trick
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/1780-0-0x0000019DBDBC0000-0x0000019DBDCB4000-memory.dmp
memory/1780-1-0x0000019DBE0C0000-0x0000019DBE0D0000-memory.dmp
memory/1780-2-0x0000019DBE100000-0x0000019DBE134000-memory.dmp
memory/1780-3-0x0000019DBFB20000-0x0000019DBFB30000-memory.dmp
memory/1780-4-0x0000019DBFB50000-0x0000019DBFB51000-memory.dmp
memory/1780-5-0x0000019DBFB30000-0x0000019DBFB40000-memory.dmp