Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240709-en - resource tags
- submitted
23/07/2024, 00:31
General
- Target 43d3b7ec165e269bd45e0bf0b50432e0.exe
- Size 1.8MB
- Sample240723-at2tmsxfpr
- SHA256 5f692a76a6fa64b63aa84869e22e8671fa15418c39b409e7c59dbdd673cf2181
Malware Config
Extracted
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amadey
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4.30
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4dd39d
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http://77.91.77.82
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install_dir
ad40971b6b
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install_file
explorti.exe
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strings_key
a434973ad22def7137dbb5e059b7081e
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url_paths
/Hun4Ko/index.php
Extracted
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stealc
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sila
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http://85.28.47.31
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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 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 6 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
- AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
- Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
- Suspicious use of SetThreadContext 1 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
- Checks processor information in registry 2 TTPs 8 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of FindShellTrayWindow 64 IoCs
- Suspicious use of SendNotifyMessage 64 IoCs
- Suspicious use of WriteProcessMemory 31 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
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C:\Users\Admin\AppData\Local\Temp\43d3b7ec165e269bd45e0bf0b50432e0.exe"C:\Users\Admin\AppData\Local\Temp\43d3b7ec165e269bd45e0bf0b50432e0.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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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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
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\1000021001\29e09d8465.exe"C:\Users\Admin\AppData\Local\Temp\1000021001\29e09d8465.exe"3⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 13084⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\1000022001\f16dd973c2.exe"C:\Users\Admin\AppData\Local\Temp\1000022001\f16dd973c2.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" https://www.youtube.com/account4⤵
- Suspicious use of WriteProcessMemory
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" https://www.youtube.com/account5⤵
- Checks processor information in registry
- Modifies registry class
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=1952 -parentBuildID 20240401114208 -prefsHandle 1872 -prefMapHandle 1864 -prefsLen 25753 -prefMapSize 244658 -appDir "C:\Program Files\Mozilla Firefox\browser" - {988cba18-9ce1-4384-87a4-1d5c67e159a0} 4928 "\\.\pipe\gecko-crash-server-pipe.4928" gpu6⤵
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=2396 -parentBuildID 20240401114208 -prefsHandle 2388 -prefMapHandle 2384 -prefsLen 26673 -prefMapSize 244658 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {0da5f1b4-9d09-41d1-91ad-74786b8a60a6} 4928 "\\.\pipe\gecko-crash-server-pipe.4928" socket6⤵
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=2904 -childID 1 -isForBrowser -prefsHandle 2896 -prefMapHandle 2892 -prefsLen 22698 -prefMapSize 244658 -jsInitHandle 1144 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {851264e1-1693-4c49-bf67-75cef9b5da4b} 4928 "\\.\pipe\gecko-crash-server-pipe.4928" tab6⤵
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=3444 -childID 2 -isForBrowser -prefsHandle 3500 -prefMapHandle 3496 -prefsLen 31163 -prefMapSize 244658 -jsInitHandle 1144 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {05edc0f3-cc60-48e2-aef3-e5d7a200a3da} 4928 "\\.\pipe\gecko-crash-server-pipe.4928" tab6⤵
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=4308 -parentBuildID 20240401114208 -sandboxingKind 0 -prefsHandle 4260 -prefMapHandle 4256 -prefsLen 31163 -prefMapSize 244658 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {95d6dd4e-8e9f-41e0-ac68-8f6659b24970} 4928 "\\.\pipe\gecko-crash-server-pipe.4928" utility6⤵
- Checks processor information in registry
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=5284 -childID 3 -isForBrowser -prefsHandle 5276 -prefMapHandle 5272 -prefsLen 27132 -prefMapSize 244658 -jsInitHandle 1144 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {8c204515-8696-4175-a756-9427e73cf2c3} 4928 "\\.\pipe\gecko-crash-server-pipe.4928" tab6⤵
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=5420 -childID 4 -isForBrowser -prefsHandle 5428 -prefMapHandle 5432 -prefsLen 27132 -prefMapSize 244658 -jsInitHandle 1144 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {47afb1cd-c848-4333-b635-5fad8a635f3c} 4928 "\\.\pipe\gecko-crash-server-pipe.4928" tab6⤵
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C:\Program Files\Mozilla Firefox\firefox.exe"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel=5720 -childID 5 -isForBrowser -prefsHandle 5620 -prefMapHandle 5624 -prefsLen 27132 -prefMapSize 244658 -jsInitHandle 1144 -jsInitLen 234952 -parentBuildID 20240401114208 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {60298619-cf50-4bda-a0e8-7befe66ee103} 4928 "\\.\pipe\gecko-crash-server-pipe.4928" tab6⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1860 -ip 18601⤵
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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
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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
29e09d8465.exe
f16dd973c2.exe
explorti.exe
memory/1504-1-0x0000000077514000-0x0000000077516000-memory.dmp
memory/1504-2-0x0000000000F11000-0x0000000000F3F000-memory.dmp
memory/1504-3-0x0000000000F10000-0x00000000013B1000-memory.dmp
memory/1504-4-0x0000000000F10000-0x00000000013B1000-memory.dmp
memory/1504-18-0x0000000000F10000-0x00000000013B1000-memory.dmp
memory/1504-0-0x0000000000F10000-0x00000000013B1000-memory.dmp
memory/1860-46-0x0000000000400000-0x0000000000643000-memory.dmp
memory/2324-20-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-70-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-84-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-86-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-87-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-21-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-19-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-47-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-16-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-66-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-67-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-68-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-69-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-85-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-88-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-22-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-74-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-75-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-76-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-77-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-78-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/2324-79-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/3056-29-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/3056-25-0x0000000000400000-0x0000000000643000-memory.dmp
memory/3056-28-0x0000000000400000-0x0000000000643000-memory.dmp
memory/5416-73-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/5416-72-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/5768-83-0x0000000000EE0000-0x0000000001381000-memory.dmp
memory/5768-81-0x0000000000EE0000-0x0000000001381000-memory.dmp