Analysis
- max time kernel
119s - max time network
95s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
07/11/2024, 08:44
General
- Target 08735856150e70f96bae9a4051705e702263292c599cf438fcdaeeb1f983cd41N.exe
- Size 33KB
- Sample241107-knbelsygph
- SHA256 08735856150e70f96bae9a4051705e702263292c599cf438fcdaeeb1f983cd41
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 3 IoCs
- Boot or Logon Autostart Execution: Active Setup 2 TTPs 4 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
- Disables RegEdit via registry modification 2 IoCs
- Disables Task Manager via registry modification
- Executes dropped EXE 2 IoCs
- Modifies system executable filetype association 2 TTPs 2 IoCs
- Adds Run key to start application 2 TTPs 3 IoCs
- Drops file in System32 directory 12 IoCs
- UPX packed file 28 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Drops file in Windows directory 20 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies registry class 4 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\08735856150e70f96bae9a4051705e702263292c599cf438fcdaeeb1f983cd41N.exe"C:\Users\Admin\AppData\Local\Temp\08735856150e70f96bae9a4051705e702263292c599cf438fcdaeeb1f983cd41N.exe"1⤵
- Modifies WinLogon for persistence
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\inetc.{7007ACC7-3202-11D1-AAD2-00805FC1270E}\÷ùïùöø¡øÖ„•.exeC:\Users\Admin\AppData\Roaming\inetc.{7007ACC7-3202-11D1-AAD2-00805FC1270E}\÷ùïùöø¡øÖ„•.exe2⤵
- Modifies WinLogon for persistence
- Disables RegEdit via registry modification
- Executes dropped EXE
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
-
-
C:\Users\Admin\AppData\Roaming\inetc.{7007ACC7-3202-11D1-AAD2-00805FC1270E}\üþôþûý¦ýÛ.exeC:\Users\Admin\AppData\Roaming\inetc.{7007ACC7-3202-11D1-AAD2-00805FC1270E}\üþôþûý¦ýÛ.exe2⤵
- Modifies WinLogon for persistence
- Disables RegEdit via registry modification
- Executes dropped EXE
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Active Setup
1Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Change Default File Association
1Replay Monitor
Loading Replay Monitor...
Downloads
÷ùïùöø¡øÖ„•.exe
üþôþûý¦ýÛ.exe
memory/916-0-0x0000000000400000-0x0000000000422000-memory.dmp
memory/916-21-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-26-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-23-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-44-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-22-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-34-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-42-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-28-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-40-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-30-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-38-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-32-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2336-36-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-25-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-35-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-33-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-37-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-31-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-39-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-29-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-41-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-27-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-43-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-24-0x0000000000400000-0x0000000000422000-memory.dmp
memory/3036-45-0x0000000000400000-0x0000000000422000-memory.dmp