Analysis
- max time kernel
120s - max time network
131s - platform
windows7_x64 - resource
win7-en-20211208 - submitted
18/02/2022, 17:46
General
- Target b24c7f70337242e9b04e6f7a03f420fb.exe
- Size 727KB
- Sample220218-wcb3jsdfbp
- SHA256 e877ee10428a6a81a83caaa9222466efbc4635a719613d63f813d8dc49baef8f
Malware Config
Extracted
-
orcus
-
NEW
-
122.186.23.243:10134
-
c7798e5973374c92859ce651077d0576
-
autostart_method
Registry
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enable_keylogger
true
-
install_path
%windir%\Desktop Window Manager.exe
-
reconnect_delay
10000
-
registry_keyname
Program
-
taskscheduler_taskname
Windows
-
watchdog_path
AppData\OrcusWatchdog.exe
Signatures
- Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
- Orcus Main Payload 7 IoCs
- Orcurs Rat Executable 9 IoCs
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 6 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Drops file in Windows directory 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\b24c7f70337242e9b04e6f7a03f420fb.exe"C:\Users\Admin\AppData\Local\Temp\b24c7f70337242e9b04e6f7a03f420fb.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Mass.exe"C:\Users\Admin\AppData\Local\Temp\Mass.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
-
-
C:\Users\Admin\AppData\Local\Temp\Desktop Window Manager.exe"C:\Users\Admin\AppData\Local\Temp\Desktop Window Manager.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
-
C:\Windows\Desktop Window Manager.exe"C:\Windows\Desktop Window Manager.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/516-81-0x0000000004EB0000-0x0000000004EB1000-memory.dmp
memory/516-68-0x0000000073A4E000-0x0000000073A4F000-memory.dmp
memory/516-66-0x0000000000AB0000-0x0000000000B0A000-memory.dmp
memory/516-86-0x0000000004EB5000-0x0000000004EC6000-memory.dmp
memory/848-71-0x0000000000350000-0x000000000035E000-memory.dmp
memory/848-73-0x0000000000490000-0x00000000004A2000-memory.dmp
memory/848-74-0x00000000004B0000-0x00000000004B8000-memory.dmp
memory/848-72-0x0000000000810000-0x000000000086C000-memory.dmp
memory/848-67-0x0000000000F90000-0x0000000001078000-memory.dmp
memory/848-70-0x0000000004BD0000-0x0000000004BD1000-memory.dmp
memory/848-69-0x0000000073A4E000-0x0000000073A4F000-memory.dmp
memory/968-79-0x0000000000D80000-0x0000000000DCE000-memory.dmp
memory/968-80-0x0000000000D00000-0x0000000000D18000-memory.dmp
memory/968-82-0x0000000073A4E000-0x0000000073A4F000-memory.dmp
memory/968-78-0x0000000000E20000-0x0000000000F08000-memory.dmp
memory/968-83-0x0000000004940000-0x0000000004941000-memory.dmp
memory/968-84-0x00000000043F0000-0x0000000004400000-memory.dmp
memory/968-85-0x0000000004945000-0x0000000004956000-memory.dmp
memory/1884-53-0x0000000075AB1000-0x0000000075AB3000-memory.dmp