Analysis
- max time kernel
71s - max time network
74s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
10/03/2024, 14:15
General
- Target ModFixer.exe
- Size 3.1MB
- Sample240310-rkpldsed4z
- SHA256 801d4bbd5bdd9780c9cfb969b61adb16fe20709798a01880fa8cdaf61a56f6d4
Malware Config
Extracted
-
quasar
-
1.4.1
-
Slave
-
uk2.localto.net:37735
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192.168.1.54:443
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192.168.1.54:80
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82.47.98.176:80
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82.47.98.176:443
-
70129915-f2b5-40ef-aa85-96dbc3efa5c9
-
encryption_key
76B28C3E753D8BB017093D2AA2C736559D00B442
-
install_name
GorillaTag.exe
-
log_directory
Steam Error Logs
-
reconnect_delay
3000
-
startup_key
Steam WebHelper
-
subdirectory
SubDir
Signatures
- 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).
- Creates scheduled task(s) 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 3 IoCs
- Suspicious use of SendNotifyMessage 3 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\ModFixer.exe"C:\Users\Admin\AppData\Local\Temp\ModFixer.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Steam WebHelper" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.exe"C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.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 "Steam WebHelper" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\GorillaTag.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
GorillaTag.exe
memory/3252-11-0x000000001B0F0000-0x000000001B100000-memory.dmp
memory/3252-10-0x00007FFC73510000-0x00007FFC73FD1000-memory.dmp
memory/3252-12-0x000000001BC40000-0x000000001BC90000-memory.dmp
memory/3252-13-0x000000001BD50000-0x000000001BE02000-memory.dmp
memory/3252-16-0x000000001BCC0000-0x000000001BCD2000-memory.dmp
memory/3252-17-0x000000001C950000-0x000000001C98C000-memory.dmp
memory/3252-18-0x00007FFC73510000-0x00007FFC73FD1000-memory.dmp
memory/3252-19-0x000000001B0F0000-0x000000001B100000-memory.dmp
memory/4952-2-0x000000001B2F0000-0x000000001B300000-memory.dmp
memory/4952-1-0x00007FFC73510000-0x00007FFC73FD1000-memory.dmp
memory/4952-9-0x00007FFC73510000-0x00007FFC73FD1000-memory.dmp
memory/4952-0-0x0000000000030000-0x0000000000354000-memory.dmp