Analysis
- user interaction
yes - max time kernel
299s - max time network
301s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
27/08/2026, 10:27
General
- Target Pulsar-Client.exe
- Size 952KB
- Sample260827-mg3avsshnd
- SHA256 7f74156c9bf9a90b6eedaf3777a52dfbe1b67fa94a52f1cc068cbbd5266530b7
Malware Config
Extracted
-
quasar
-
encryption_key
33A7029011B6BD4B067B8907EB238F25EFF233BF
-
key_salt
5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382
-
reconnect_delay
3000
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Pulsar-Client.exe"C:\Users\Admin\AppData\Local\Temp\Pulsar-Client.exe"1⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\dkD9NN8femdD.bat" "2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\chcp.comchcp 650013⤵
-
-
C:\Windows\system32\timeout.exetimeout /T 5 /NOBREAK3⤵
- Delays execution with timeout.exe
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
dkD9NN8femdD.bat
memory/1572-28-0x000001F2FE670000-0x000001F2FE6BA000-memory.dmp
memory/1572-37-0x000001F2FE840000-0x000001F2FE874000-memory.dmp
memory/1572-3-0x000001F2FE2A0000-0x000001F2FE2B2000-memory.dmp
memory/1572-4-0x000001F2FE300000-0x000001F2FE33C000-memory.dmp
memory/1572-5-0x000001F2FE2D0000-0x000001F2FE2DA000-memory.dmp
memory/1572-6-0x000001F2FE340000-0x000001F2FE366000-memory.dmp
memory/1572-7-0x000001F2FE2F0000-0x000001F2FE2F8000-memory.dmp
memory/1572-8-0x000001F2FE370000-0x000001F2FE3D2000-memory.dmp
memory/1572-9-0x000001F2FE3F0000-0x000001F2FE432000-memory.dmp
memory/1572-10-0x000001F2FE2E0000-0x000001F2FE2EA000-memory.dmp
memory/1572-11-0x000001F2FE3D0000-0x000001F2FE3DA000-memory.dmp
memory/1572-12-0x000001F2FE450000-0x000001F2FE46A000-memory.dmp
memory/1572-13-0x000001F2FE6C0000-0x000001F2FE6E2000-memory.dmp
memory/1572-0-0x000001F2E28D0000-0x000001F2E29C4000-memory.dmp
memory/1572-2-0x000001F2FCDA0000-0x000001F2FCDD4000-memory.dmp
memory/1572-40-0x000001F2FE8B0000-0x000001F2FE8C4000-memory.dmp
memory/1572-29-0x000001F2FE6F0000-0x000001F2FE73C000-memory.dmp
memory/1572-39-0x000001F2FE8A0000-0x000001F2FE8B0000-memory.dmp
memory/1572-38-0x000001F2FE870000-0x000001F2FE8A2000-memory.dmp
memory/1572-30-0x000001F2FE740000-0x000001F2FE7C0000-memory.dmp
memory/1572-36-0x000001F2FE830000-0x000001F2FE846000-memory.dmp
memory/1572-35-0x000001F2FE440000-0x000001F2FE44C000-memory.dmp
memory/1572-34-0x000001F2FE430000-0x000001F2FE43A000-memory.dmp
memory/1572-33-0x000001F2FE7F0000-0x000001F2FE82A000-memory.dmp
memory/1572-32-0x000001F2FE3E0000-0x000001F2FE3F4000-memory.dmp
memory/1572-31-0x000001F2FE7C0000-0x000001F2FE7EA000-memory.dmp
memory/1572-41-0x000001F2E2DA0000-0x000001F2E2DB0000-memory.dmp
memory/1572-45-0x000001F2FEA60000-0x000001F2FEA98000-memory.dmp
memory/1572-1-0x000001F2E2DA0000-0x000001F2E2DB0000-memory.dmp