Analysis
- max time kernel
1797s - max time network
1801s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
06/09/2024, 22:47
General
- Target Client-built6test.exe
- Size 3.1MB
- Sample240906-2qq2hs1hkl
- SHA256 b1c92822d16d35d23b49c7920a327ac84109a9906ea85b566b17c99851a8800d
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
incrediblew32-41135.portmap.host:41135
-
e35e216e-411f-4600-b7d4-1b7e001ce1e6
-
encryption_key
512BCCA0CE12E096E92A15ECCE78FFB787D7E9B2
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
win73
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 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\Client-built6test.exe"C:\Users\Admin\AppData\Local\Temp\Client-built6test.exe"1⤵
- 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 "win73" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/4448-0-0x00007FFA9F5F3000-0x00007FFA9F5F5000-memory.dmp
memory/4448-1-0x0000000000540000-0x0000000000860000-memory.dmp
memory/4448-2-0x00007FFA9F5F0000-0x00007FFAA00B1000-memory.dmp
memory/4448-3-0x000000001C150000-0x000000001C1A0000-memory.dmp
memory/4448-4-0x000000001C260000-0x000000001C312000-memory.dmp
memory/4448-5-0x00007FFA9F5F3000-0x00007FFA9F5F5000-memory.dmp
memory/4448-6-0x00007FFA9F5F0000-0x00007FFAA00B1000-memory.dmp