Analysis
- max time kernel
145s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
17/12/2024, 02:33
General
- Target 4119dedd1d6408f80505394a374cde76124a736913f958c878f54c16c98986e3.exe
- Size 3.1MB
- Sample241217-c188eaynar
- SHA256 4119dedd1d6408f80505394a374cde76124a736913f958c878f54c16c98986e3
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
4.tcp.us-cal-1.ngrok.io:18092
-
11bbf22e-826e-486b-b024-adbd86228a9e
-
encryption_key
7A589EDBC6A581E125BF830EF0D05FC74BB75E30
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
ctfmon
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 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\4119dedd1d6408f80505394a374cde76124a736913f958c878f54c16c98986e3.exe"C:\Users\Admin\AppData\Local\Temp\4119dedd1d6408f80505394a374cde76124a736913f958c878f54c16c98986e3.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "ctfmon" /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.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "ctfmon" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/1116-9-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp
memory/1116-11-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp
memory/1116-12-0x000000001DB60000-0x000000001DBB0000-memory.dmp
memory/1116-13-0x000000001DC70000-0x000000001DD22000-memory.dmp
memory/1116-14-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp
memory/3004-0-0x00007FFB29E63000-0x00007FFB29E65000-memory.dmp
memory/3004-1-0x0000000000550000-0x0000000000874000-memory.dmp
memory/3004-2-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp
memory/3004-10-0x00007FFB29E60000-0x00007FFB2A921000-memory.dmp