Analysis
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max time kernel
120s -
max time network
128s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
29-11-2024 04:10
Static task
static1
Behavioral task
behavioral1
Sample
INQUIRY_pdf.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
INQUIRY_pdf.exe
Resource
win10v2004-20241007-en
General
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Target
INQUIRY_pdf.exe
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Size
885KB
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MD5
0eff2e486b1c46cbf55bc4284355f1ee
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SHA1
f9a921a9ef66c0c1c0fcd6fe02aafc8461f05691
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SHA256
b7bbe88d2daceef7fdbd706adbdf6532976f23916701739ee0987f77f36b980a
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SHA512
b52122ca5444d606775d7426b7e19bd3090a89c486585c88b33b9fd57a7d87f0e591b7395b538646d93f2d9463d21f281ea5a4a57afb8c12a66d067dc0e3b20b
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SSDEEP
24576:t2xjaLCnYnbUX2bWOTk7k86ht45oS93GyIrKa:ADnYi6WMlxtxS93GNrK
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
jhxkgroup.online - Port:
587 - Username:
[email protected] - Password:
7213575aceACE@ - Email To:
[email protected]
Signatures
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VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
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Vipkeylogger family
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
INQUIRY_pdf.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INQUIRY_pdf.exe Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INQUIRY_pdf.exe Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INQUIRY_pdf.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
INQUIRY_pdf.exedescription pid Process procid_target PID 3044 set thread context of 2900 3044 INQUIRY_pdf.exe 33 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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:
INQUIRY_pdf.exeINQUIRY_pdf.exepowershell.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language INQUIRY_pdf.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language INQUIRY_pdf.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
INQUIRY_pdf.exepowershell.exepid Process 2900 INQUIRY_pdf.exe 2868 powershell.exe 2900 INQUIRY_pdf.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
INQUIRY_pdf.exepowershell.exedescription pid Process Token: SeDebugPrivilege 2900 INQUIRY_pdf.exe Token: SeDebugPrivilege 2868 powershell.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
INQUIRY_pdf.exedescription pid Process procid_target PID 3044 wrote to memory of 2868 3044 INQUIRY_pdf.exe 31 PID 3044 wrote to memory of 2868 3044 INQUIRY_pdf.exe 31 PID 3044 wrote to memory of 2868 3044 INQUIRY_pdf.exe 31 PID 3044 wrote to memory of 2868 3044 INQUIRY_pdf.exe 31 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 PID 3044 wrote to memory of 2900 3044 INQUIRY_pdf.exe 33 -
outlook_office_path 1 IoCs
Processes:
INQUIRY_pdf.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INQUIRY_pdf.exe -
outlook_win_path 1 IoCs
Processes:
INQUIRY_pdf.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 INQUIRY_pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\INQUIRY_pdf.exe"C:\Users\Admin\AppData\Local\Temp\INQUIRY_pdf.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3044 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\INQUIRY_pdf.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2868
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C:\Users\Admin\AppData\Local\Temp\INQUIRY_pdf.exe"C:\Users\Admin\AppData\Local\Temp\INQUIRY_pdf.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2900
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2