Analysis
- max time kernel
145s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
24/05/2024, 15:57
General
- Target 6f0e102a9b5a459f182e5b0501ab2315_JaffaCakes118.exe
- Size 844KB
- Sample240524-tdy8csbf26
- SHA256 8860dd0f1793f1585f0862dad7c6c1aad2f6f20352620ffbd85acbec37274e65
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
qua2
-
79.134.225.77:1973
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QSR_MUTEX_rVn0OUE8f1tzJgSd1f
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encryption_key
lOSR71Cu22ACEpzOi042
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install_name
Client.exe
-
log_directory
Logs
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reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 6 IoCs
- Drops startup file 1 IoCs
- Executes dropped EXE 2 IoCs
- UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- NTFS ADS 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\6f0e102a9b5a459f182e5b0501ab2315_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\6f0e102a9b5a459f182e5b0501ab2315_JaffaCakes118.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\notepad.exe"C:\Windows\system32\notepad.exe"2⤵
- Drops startup file
- NTFS ADS
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\AsdfgQ\SQdfgh5f.exe"C:\Users\Admin\AppData\Roaming\AsdfgQ\SQdfgh5f.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\AsdfgQ\SQdfgh5f.exe"C:\Users\Admin\AppData\Roaming\AsdfgQ\SQdfgh5f.exe"4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
SQdfgh5f.exe
memory/2044-11-0x00000000004A0000-0x00000000004A1000-memory.dmp
memory/2500-18-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/2500-21-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/2672-0-0x0000000002480000-0x0000000002481000-memory.dmp
memory/2672-1-0x0000000003F70000-0x0000000003F82000-memory.dmp
memory/2672-2-0x0000000003F70000-0x0000000003F82000-memory.dmp
memory/2672-3-0x00000000024E0000-0x00000000024E1000-memory.dmp
memory/2672-4-0x0000000000400000-0x00000000004D8000-memory.dmp
memory/2672-6-0x0000000002480000-0x0000000002481000-memory.dmp
memory/3308-35-0x0000000000A10000-0x0000000000A6E000-memory.dmp
memory/3308-48-0x00000000051B0000-0x0000000005242000-memory.dmp
memory/3308-30-0x0000000000400000-0x00000000004C9000-memory.dmp
memory/3308-34-0x0000000000A10000-0x0000000000A6E000-memory.dmp
memory/3308-33-0x0000000000400000-0x00000000004C9000-memory.dmp
memory/3308-27-0x0000000000400000-0x00000000004C9000-memory.dmp
memory/3308-47-0x0000000004C00000-0x00000000051A4000-memory.dmp
memory/3308-36-0x0000000000400000-0x00000000004C9000-memory.dmp
memory/3308-49-0x0000000000400000-0x00000000004C9000-memory.dmp
memory/3308-31-0x0000000000400000-0x00000000004C9000-memory.dmp
memory/3308-50-0x0000000005290000-0x00000000052F6000-memory.dmp
memory/3308-51-0x0000000005960000-0x0000000005972000-memory.dmp
memory/3308-52-0x0000000005FC0000-0x0000000005FFC000-memory.dmp
memory/3308-54-0x0000000006390000-0x000000000639A000-memory.dmp