Analysis
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max time kernel
150s -
max time network
111s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17-10-2024 15:39
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20241007-en
General
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Target
file.exe
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Size
1.7MB
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MD5
ccb3b74d378733c21fc584875b5a8b07
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SHA1
6779b4d3cfff750eeeeba77ec7abf4e206cc3931
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SHA256
0b1fadc136b71d5961664a2a1dc8e340c28324d3d8637667f1280bee4c3d12db
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SHA512
ab0739b93d6db261cfb6a1ea0efc759eac6f883ba06dd2ca516bb9415a022215a1b35ccb5bac0c5b90d37878e509e0bb4da4645c312305b03a957b5bf61d2d58
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SSDEEP
49152:cpc6JirvEsh7B4/6LXhzmgvznCZzzg0zsYv:cp0rvdh7Sm1Pwzzg0zsY
Malware Config
Extracted
Protocol: smtp- Host:
smtp.gmail.com - Port:
587 - Username:
[email protected] - Password:
1234567Dd
Signatures
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Detected Nirsoft tools 4 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
Processes:
resource yara_rule behavioral2/memory/5380-494-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/5380-496-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/5564-503-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/5564-511-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral2/memory/5380-494-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/5380-496-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 2 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral2/memory/5564-503-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/5564-511-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
file.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" file.exe -
Drops desktop.ini file(s) 2 IoCs
Processes:
file.exedescription ioc process File opened for modification C:\Windows\assembly\Desktop.ini file.exe File created C:\Windows\assembly\Desktop.ini file.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 24 whatismyipaddress.com 26 whatismyipaddress.com -
Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs
Processes:
file.exepid process 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe 3736 file.exe -
Suspicious use of SetThreadContext 2 IoCs
Processes:
file.exedescription pid process target process PID 3736 set thread context of 5380 3736 file.exe vbc.exe PID 3736 set thread context of 5564 3736 file.exe vbc.exe -
Drops file in Windows directory 3 IoCs
Processes:
file.exedescription ioc process File opened for modification C:\Windows\assembly file.exe File created C:\Windows\assembly\Desktop.ini file.exe File opened for modification C:\Windows\assembly\Desktop.ini file.exe -
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.
Processes:
file.exevbc.exevbc.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vbc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vbc.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
vbc.exefile.exepid process 5564 vbc.exe 5564 vbc.exe 3736 file.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
file.exedescription pid process Token: SeDebugPrivilege 3736 file.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
file.exepid process 3736 file.exe -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
file.exedescription pid process target process PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5380 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe PID 3736 wrote to memory of 5564 3736 file.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3736 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"2⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
PID:5380
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:5564
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196