Analysis
- max time kernel
94s - max time network
131s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
03/10/2022, 02:23
General
- Target 91e3e9cc577255c3515aabc14fc485521098421bc7d77c9bab64fbe9c7b5ab88.exe
- Size 1.1MB
- Sample221003-cvfc5scbd8
- SHA256 91e3e9cc577255c3515aabc14fc485521098421bc7d77c9bab64fbe9c7b5ab88
Score
10/10
Malware Config
Signatures
- ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
- ISR Stealer payload 2 IoCs
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of FindShellTrayWindow 3 IoCs
- Suspicious use of SendNotifyMessage 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\91e3e9cc577255c3515aabc14fc485521098421bc7d77c9bab64fbe9c7b5ab88.exe"C:\Users\Admin\AppData\Local\Temp\91e3e9cc577255c3515aabc14fc485521098421bc7d77c9bab64fbe9c7b5ab88.exe"1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\91e3e9cc577255c3515aabc14fc485521098421bc7d77c9bab64fbe9c7b5ab88.exe"C:\Users\Admin\AppData\Local\Temp\91e3e9cc577255c3515aabc14fc485521098421bc7d77c9bab64fbe9c7b5ab88.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\91e3e9cc577255c3515aabc14fc485521098421bc7d77c9bab64fbe9c7b5ab88.exe/scomma "C:\Users\Admin\AppData\Local\Temp\tmp.ini"3⤵
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1728-137-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1728-139-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1728-141-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1728-142-0x0000000000400000-0x0000000000453000-memory.dmp
memory/5092-133-0x0000000000400000-0x0000000000432000-memory.dmp
memory/5092-140-0x0000000000400000-0x0000000000432000-memory.dmp