Analysis
- max time kernel
148s - max time network
137s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
10/11/2026, 19:09
General
- Target avast_free_antivirus_setup_online.exe
- Size 245KB
- Sample261110-xt5a4aab64
- SHA256 6be180ea9a978907b1f39e54a6360404a094d59c21e4ebb1fcb456aef0ff4859
Score
6/10
Malware Config
Signatures
- Checks for any installed AV software in registry 1 TTPs 4 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 5 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Executes dropped EXE 5 IoCs
- Loads dropped DLL 4 IoCs
- Direct Volume Access: Opens a physical disk for reading 1 TTPs 6 IoCs
Opens a raw handle to a physical disk, which bypasses file system access controls and is used for disk inspection, anti-VM checks and privilege checks.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 8 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 2 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 5 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_free_antivirus_setup_online.exe"C:\Users\Admin\AppData\Local\Temp\avast_free_antivirus_setup_online.exe"1⤵
- Writes to the Master Boot Record (MBR)
- Loads dropped DLL
- Direct Volume Access: Opens a physical disk for reading
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\Temp\asw.874f24ef9439f78b\avast_free_antivirus_online_setup.exe"C:\Windows\Temp\asw.874f24ef9439f78b\avast_free_antivirus_online_setup.exe" /ga_clientid:cac7697d-bcbb-4ea0-b601-29c43879bc2c /edat_dir:C:\Windows\Temp\asw.874f24ef9439f78b /geo:GB2⤵
- Writes to the Master Boot Record (MBR)
- Executes dropped EXE
- Loads dropped DLL
- Direct Volume Access: Opens a physical disk for reading
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\common\icarus.exeC:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\common\icarus.exe /icarus-info-path:C:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\icarus-info.xml /install /edat_dir:C:\Windows\Temp\asw.874f24ef9439f78b /geo:GB /track-guid:cac7697d-bcbb-4ea0-b601-29c43879bc2c /sssid:35523⤵
- Writes to the Master Boot Record (MBR)
- Executes dropped EXE
- Direct Volume Access: Opens a physical disk for reading
- Reads the TCP/IP host and domain name from the registry
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\common\icarus_ui.exeC:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\common\icarus_ui.exe /edat_dir:C:\Windows\Temp\asw.874f24ef9439f78b /geo:GB /track-guid:cac7697d-bcbb-4ea0-b601-29c43879bc2c /sssid:3552 /er_master:master_ep_5ba3736d-f66f-41b0-a279-3b8851baef0a /er_ui:ui_ep_74ecb71c-5bdb-49fb-a6c4-a184e52f86054⤵
- Executes dropped EXE
- Direct Volume Access: Opens a physical disk for reading
- Reads the TCP/IP host and domain name from the registry
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
-
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C:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\avast-av-vps\icarus.exeC:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\avast-av-vps\icarus.exe /edat_dir:C:\Windows\Temp\asw.874f24ef9439f78b /geo:GB /track-guid:cac7697d-bcbb-4ea0-b601-29c43879bc2c /sssid:3552 /er_master:master_ep_5ba3736d-f66f-41b0-a279-3b8851baef0a /er_ui:ui_ep_74ecb71c-5bdb-49fb-a6c4-a184e52f8605 /er_slave:avast-av-vps_slave_ep_440d275b-2572-4c9c-827d-38e1ab516bd3 /slave:avast-av-vps4⤵
- Writes to the Master Boot Record (MBR)
- Executes dropped EXE
- Loads dropped DLL
- Direct Volume Access: Opens a physical disk for reading
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\avast-av\icarus.exeC:\Windows\Temp\asw-cac7697d-bcbb-4ea0-b601-29c43879bc2c\avast-av\icarus.exe /edat_dir:C:\Windows\Temp\asw.874f24ef9439f78b /geo:GB /track-guid:cac7697d-bcbb-4ea0-b601-29c43879bc2c /sssid:3552 /er_master:master_ep_5ba3736d-f66f-41b0-a279-3b8851baef0a /er_ui:ui_ep_74ecb71c-5bdb-49fb-a6c4-a184e52f8605 /er_slave:avast-av_slave_ep_8ebea546-4276-467c-a4be-345712393c60 /slave:avast-av4⤵
- Checks for any installed AV software in registry
- Writes to the Master Boot Record (MBR)
- Executes dropped EXE
- Loads dropped DLL
- Direct Volume Access: Opens a physical disk for reading
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
icarus.log
icarus.log
icarus.log
reporting.log
sfx.log
sfx.log
sfx.log
sui.log
sui.log
temporary_proxy.ini
config.def
icarus_product.dll
product-def.xml
product-info.xml
config.def
edition.edat
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
gpid.edat
gpud.edat
icarus-info.xml
package.edat
skup.edat
avast_free_antivirus_online_setup.exe