Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
12/11/2026, 11:50
General
- Target xx8.ac.exe
- Size 3.1MB
- Sample261112-nzsd2sfa93
- SHA256 2c8babe9b7e93ce41b4de5c3dafdda70a65ccbd24105f61914171061b589a96d
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
xx8.ac:443
-
www.xx8.ac:443
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xx8.ac:80
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www.xx8.ac:80
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acc0e128-0102-490b-b989-ed151887a25e
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encryption_key
ED3227F773701D05083B11A65776F95F93EEEF5E
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\xx8.ac.exe"C:\Users\Admin\AppData\Local\Temp\xx8.ac.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/2512-26-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-25-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-33-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-32-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-30-0x000000001CDA0000-0x000000001CE52000-memory.dmp
memory/2512-29-0x000000001CC90000-0x000000001CCE0000-memory.dmp
memory/2512-28-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-27-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-24-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-23-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-22-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-18-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-20-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-21-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/2512-19-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-1-0x00000000004D0000-0x00000000007F4000-memory.dmp
memory/4732-0-0x00007FF9C019F000-0x00007FF9C01A0000-memory.dmp
memory/4732-14-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-12-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-11-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-10-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-13-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-9-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-8-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-2-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-7-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-6-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-5-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-31-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-4-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp
memory/4732-3-0x00007FF9C0010000-0x00007FF9C09B4000-memory.dmp