Analysis
- user interaction
yes - max time kernel
36s - max time network
41s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
27/07/2026, 00:50
General
- Target avast_one_free.exe
- Size 1.7MB
- Sample260727-a7ambatdrf
- SHA256 7b5a2fd08e310c850428e14e844db3140834cb142bf457fc0ab6e35c86d509e2
Score
6/10
Malware Config
Signatures
- Checks for any installed AV software in registry 1 TTPs 1 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Executes dropped EXE 2 IoCs
- Loads dropped DLL 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 5 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 4 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 10 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\avast_one_free.exe"C:\Users\Admin\AppData\Local\Temp\avast_one_free.exe"1⤵
- Writes to the Master Boot Record (MBR)
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Windows\Temp\asw-9a3d39b4-74c2-4c2c-9170-214f907e1513\common\icarus.exeC:\Windows\Temp\asw-9a3d39b4-74c2-4c2c-9170-214f907e1513\common\icarus.exe /icarus-info-path:C:\Windows\Temp\asw-9a3d39b4-74c2-4c2c-9170-214f907e1513\icarus-info.xml /install /sssid:52722⤵
- Checks for any installed AV software in registry
- Writes to the Master Boot Record (MBR)
- Executes dropped EXE
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\Temp\asw-9a3d39b4-74c2-4c2c-9170-214f907e1513\common\icarus_ui.exeC:\Windows\Temp\asw-9a3d39b4-74c2-4c2c-9170-214f907e1513\common\icarus_ui.exe /sssid:5272 /er_master:master_ep_e755e013-4bda-4766-8ef0-e649d71cbe18 /er_ui:ui_ep_4e3b8e6c-9b21-4309-8e9f-dc2aeef2b2d53⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
-
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
sfx.log
temporary_proxy.ini
icarus.exe
icarus_mod.dll
icarus_ui.exe
product-def.xml
product-info.xml
setupui.cont
ecoo.edat
epps.edat
eref.edat
giet.edat
icarus-info.xml