Analysis
- max time kernel
148s - max time network
124s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260618-en - resource tags
- submitted
22/06/2026, 18:16
General
- Target avast_one_free.exe
- Size 1.7MB
- Sample260622-wwjxhafv21
- SHA256 5434753051d22586c7047c2a22bc36204dcef167c0bf23ac89b2a2d8d26bafd1
Score
6/10
Malware Config
Signatures
- Checks for any installed AV software in registry 1 TTPs 3 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 4 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Executes dropped EXE 4 IoCs
- Loads dropped DLL 3 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 9 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 28 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 4 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\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-0df6c15c-6c76-4473-944e-304807ce231f\common\icarus.exeC:\Windows\Temp\asw-0df6c15c-6c76-4473-944e-304807ce231f\common\icarus.exe /icarus-info-path:C:\Windows\Temp\asw-0df6c15c-6c76-4473-944e-304807ce231f\icarus-info.xml /install /sssid:53362⤵
- 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-0df6c15c-6c76-4473-944e-304807ce231f\common\icarus_ui.exeC:\Windows\Temp\asw-0df6c15c-6c76-4473-944e-304807ce231f\common\icarus_ui.exe /sssid:5336 /er_master:master_ep_ebb4c74b-91fa-49ac-9750-e0c17f35d09f /er_ui:ui_ep_bd2802e4-b265-4535-a960-0b5e46f95e103⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\Temp\asw-0df6c15c-6c76-4473-944e-304807ce231f\avast-suite\icarus.exeC:\Windows\Temp\asw-0df6c15c-6c76-4473-944e-304807ce231f\avast-suite\icarus.exe /sssid:5336 /er_master:master_ep_ebb4c74b-91fa-49ac-9750-e0c17f35d09f /er_ui:ui_ep_bd2802e4-b265-4535-a960-0b5e46f95e10 /er_slave:avast-suite_slave_ep_4530f619-4c11-488a-8475-b5d87cac58ba /slave:avast-suite3⤵
- Checks for any installed AV software in registry
- Writes to the Master Boot Record (MBR)
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\Temp\asw-0df6c15c-6c76-4473-944e-304807ce231f\avast-av-vps\icarus.exeC:\Windows\Temp\asw-0df6c15c-6c76-4473-944e-304807ce231f\avast-av-vps\icarus.exe /sssid:5336 /er_master:master_ep_ebb4c74b-91fa-49ac-9750-e0c17f35d09f /er_ui:ui_ep_bd2802e4-b265-4535-a960-0b5e46f95e10 /er_slave:avast-av-vps_slave_ep_c6288882-c2dc-4b34-af23-fc1dfb26f845 /slave:avast-av-vps3⤵
- Writes to the Master Boot Record (MBR)
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
icarus.log
icarus.log
icarus.log
sfx.log
sui.log
temporary_proxy.ini
config.def
icarus_product.dll
product-def.xml
product-info.xml
policy.def
policy.def
policy.def
config.def
icarus_product.dll
bug_report.exe
dump_process.exe
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