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Analysis
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max time kernel
119s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
27/11/2024, 18:15
Static task
static1
Behavioral task
behavioral1
Sample
Teklif_PDF.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Teklif_PDF.exe
Resource
win10v2004-20241007-en
General
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Target
Teklif_PDF.exe
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Size
901KB
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MD5
fe3c062c09ea9fc35048f708cb95ecb1
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SHA1
118dbd2be3e9033b57282cb1c3e188d3c3141364
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SHA256
dda809f369a6369d2d26e75ff6cf321d2fe052f3eb0074f227065906bb2af531
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SHA512
80eec66e3e4beb210f7e94a4ffcb82f37a1d3ff07e7bd4599676233ed3585e2d51b81359e3f40f55bb7009bde5e9f3cd31624ba0a8f8645f8e31d4de5ebdefad
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SSDEEP
12288:GSpgdcAijOeKiMd3CRKoeSW/Z24gvar6iUUJGl3HxIE:GAAMKiO3y98EoLJGJF
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
mail.htcp.homes - 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 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2704 powershell.exe 2860 powershell.exe -
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
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Teklif_PDF.exe Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Teklif_PDF.exe Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Teklif_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.
flow ioc 4 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2408 set thread context of 3004 2408 Teklif_PDF.exe 36 -
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 5 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 Teklif_PDF.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Teklif_PDF.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2872 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2408 Teklif_PDF.exe 2408 Teklif_PDF.exe 3004 Teklif_PDF.exe 2860 powershell.exe 2704 powershell.exe 3004 Teklif_PDF.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 2408 Teklif_PDF.exe Token: SeDebugPrivilege 3004 Teklif_PDF.exe Token: SeDebugPrivilege 2860 powershell.exe Token: SeDebugPrivilege 2704 powershell.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 2408 wrote to memory of 2704 2408 Teklif_PDF.exe 30 PID 2408 wrote to memory of 2704 2408 Teklif_PDF.exe 30 PID 2408 wrote to memory of 2704 2408 Teklif_PDF.exe 30 PID 2408 wrote to memory of 2704 2408 Teklif_PDF.exe 30 PID 2408 wrote to memory of 2860 2408 Teklif_PDF.exe 32 PID 2408 wrote to memory of 2860 2408 Teklif_PDF.exe 32 PID 2408 wrote to memory of 2860 2408 Teklif_PDF.exe 32 PID 2408 wrote to memory of 2860 2408 Teklif_PDF.exe 32 PID 2408 wrote to memory of 2872 2408 Teklif_PDF.exe 33 PID 2408 wrote to memory of 2872 2408 Teklif_PDF.exe 33 PID 2408 wrote to memory of 2872 2408 Teklif_PDF.exe 33 PID 2408 wrote to memory of 2872 2408 Teklif_PDF.exe 33 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 PID 2408 wrote to memory of 3004 2408 Teklif_PDF.exe 36 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Teklif_PDF.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Teklif_PDF.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2408 -
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\Teklif_PDF.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2704
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\lFUADIVKfDRpV.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2860
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lFUADIVKfDRpV" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCFFC.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2872
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C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"C:\Users\Admin\AppData\Local\Temp\Teklif_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:3004
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD54d589cbc91f4435cbfff62c895eb8430
SHA174b1c9f92377955e3d9690abcbad4463bbbe6e7a
SHA2562a17ec03bfb86cf61f7ab3288cd35329d01122c92cbf76746f7a49dca8956f16
SHA5122558c56dccce8c7c806dc8bc46b7b7757830fa7a862c22e5dc2353d8ce915daf74bffe24bdc1279a67dee1d29ba82433daac84858f513aa56177d68780c9a895
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD561bd0492ad000e06982ad77c0ba1c719
SHA1f8286216470aa0c820a3039f9df68e3dfc3a2358
SHA25699f84fc5f23e9ebccbfe40a9fd324cb9efdbd54fcec086f4eff43fb8b9e91848
SHA5129ced838af335191f5d8a641f67f229eac7750225e96bc38321a1204ce0b7595676921a91d313929068e97f1d4637b12b1da3ec63f675e735afdfbbaf4e4856db