Analysis
- max time kernel
119s - max time network
95s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system - submitted
13/11/2024, 17:08
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe
Resource
win7-20241010-en
windows7-x64
11 signatures
120 seconds
Behavioral task
behavioral2
Sample
a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
10 signatures
120 seconds
General
- Target a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe
- Size 915KB
- Sample241113-vnneaayraq
- SHA256 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4f
- MD5 512e6931be31347c17eb150223bac0a0
- SHA1 46b836e4ffdfc76f9375500aaf6503b5678a2940
- SHA512 47c8ab22d509d8a44c78fa3a08d66e65a50a8469d3caedaef192065321f5d296d114a49e131d0174a0a1b5286e9a1560dcb23b024fd76f151fdf98e88f93d51d
- SSDEEP 768:5BBdFYDgao5/AUrLEEzayTpBJfxBDlxcFNXK8D1Foj/:5pcC/eAayJ3Rx0g
- MD5 SHA1 SHA512 SSDEEP
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 1864 rundll32.exe - Modifies system executable filetype association 2 TTPs 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe - Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\¢«.exe a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe File created C:\Windows\SysWOW64\notepad¢¬.exe a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe - Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\system\rundll32.exe a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe - 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe - Modifies registry class 15 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv rundll32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1731517700" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1731517700" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "505" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command rundll32.exe - Suspicious behavior: EnumeratesProcesses 28 IoCs
pid Process 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1864 rundll32.exe - Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 1864 rundll32.exe 1864 rundll32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 540 wrote to memory of 1864 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 87 PID 540 wrote to memory of 1864 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 87 PID 540 wrote to memory of 1864 540 a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe 87
Processes
-
C:\Users\Admin\AppData\Local\Temp\a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe"C:\Users\Admin\AppData\Local\Temp\a6c8b00f6dd7d18d28936d9a13e922f49b0e235d3757bec43438bd88e86a5a4fN.exe"1⤵
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:540 -
C:\Windows\system\rundll32.exeC:\Windows\system\rundll32.exe2⤵
- Executes dropped EXE
- Modifies system executable filetype association
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:1864
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Windows\System\rundll32.exe
- Size 925KB
- SHA256 c329fa2185f1e1c304f3dd80aedee6c716ccf54e4e7c3dc3908c72c91fbcf5a0
- MD5 e8664173cc9c33eba109d9b84de4bb54
- SHA1 dc3e3eecc8452538fb0cd1efe962d11d8ba09fde
- SHA512 41dd45d8c0f20ed97c871d9166a59b91451058a7dff1d13703a1f897ec8dc7dcd3b366b594ecfc077da717a795776cf95a8a546bc56dacbf31f88d44b367d3b4
- SSDEEP 768:5BBdFYDgao5/AUrLEEzayTpBJfxBDlxcFNXK8D1Foj/:5pcC/eAayJ3Rx0g
- MD5 SHA1 SHA512 SSDEEP