Analysis
- max time kernel
144s - max time network
118s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
24/07/2024, 07:00
General
- Target a75bc7ea41d7992f1b0dba7be2a9aba6.exe
- Size 1.8MB
- Sample240724-hsm8vstdjm
- SHA256 9ed8842fb8dd043c5425b6bc788d9fcc17d71cebc283e713cb8a684f83140ac9
Malware Config
Extracted
-
amadey
-
4.30
-
4dd39d
-
http://77.91.77.82
-
install_dir
ad40971b6b
-
install_file
explorti.exe
-
strings_key
a434973ad22def7137dbb5e059b7081e
-
url_paths
/Hun4Ko/index.php
Extracted
-
stealc
-
sila
-
http://85.28.47.31
-
url_path
/5499d72b3a3e55be.php
Signatures
- Amadey
Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.
- Stealc
Stealc is an infostealer written in C++.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 4 IoCs
- Downloads MZ/PE file
- Checks BIOS information in registry 2 TTPs 8 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 4 IoCs
- Identifies Wine through registry keys 2 TTPs 4 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 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.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a75bc7ea41d7992f1b0dba7be2a9aba6.exe"C:\Users\Admin\AppData\Local\Temp\a75bc7ea41d7992f1b0dba7be2a9aba6.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Identifies Wine through registry keys
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"3⤵
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-
C:\Users\Admin\AppData\Local\Temp\1000021001\d413cb30f2.exe"C:\Users\Admin\AppData\Local\Temp\1000021001\d413cb30f2.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3916 -s 13004⤵
- Program crash
-
-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3916 -ip 39161⤵
-
C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exeC:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
-
C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exeC:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
d413cb30f2.exe
explorti.exe
memory/1116-1-0x00000000774A4000-0x00000000774A6000-memory.dmp
memory/1116-2-0x0000000000201000-0x000000000022F000-memory.dmp
memory/1116-3-0x0000000000200000-0x00000000006C8000-memory.dmp
memory/1116-5-0x0000000000200000-0x00000000006C8000-memory.dmp
memory/1116-16-0x0000000000200000-0x00000000006C8000-memory.dmp
memory/1116-0-0x0000000000200000-0x00000000006C8000-memory.dmp
memory/3340-45-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-59-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-20-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-18-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-66-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-65-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-64-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-63-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-43-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-44-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-17-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-46-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-47-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-48-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-49-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-19-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-58-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-54-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-55-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-56-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3340-57-0x0000000000050000-0x0000000000518000-memory.dmp
memory/3916-42-0x0000000000400000-0x0000000000643000-memory.dmp
memory/3916-40-0x0000000000AB0000-0x0000000000AE0000-memory.dmp
memory/3916-41-0x0000000000400000-0x0000000000643000-memory.dmp
memory/3916-39-0x00000000006A0000-0x00000000007A0000-memory.dmp
memory/4056-61-0x0000000000050000-0x0000000000518000-memory.dmp
memory/4056-62-0x0000000000050000-0x0000000000518000-memory.dmp
memory/4204-53-0x0000000000050000-0x0000000000518000-memory.dmp
memory/4204-51-0x0000000000050000-0x0000000000518000-memory.dmp