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Analysis
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max time kernel
123s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 5004 powershell.exe 2456 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation Teklif_PDF.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-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Teklif_PDF.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 Teklif_PDF.exe Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\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 21 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4452 set thread context of 4776 4452 Teklif_PDF.exe 102 -
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 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 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 3572 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 10 IoCs
pid Process 4452 Teklif_PDF.exe 2456 powershell.exe 5004 powershell.exe 4452 Teklif_PDF.exe 4452 Teklif_PDF.exe 4452 Teklif_PDF.exe 4776 Teklif_PDF.exe 5004 powershell.exe 2456 powershell.exe 4776 Teklif_PDF.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4452 Teklif_PDF.exe Token: SeDebugPrivilege 2456 powershell.exe Token: SeDebugPrivilege 5004 powershell.exe Token: SeDebugPrivilege 4776 Teklif_PDF.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4452 wrote to memory of 5004 4452 Teklif_PDF.exe 95 PID 4452 wrote to memory of 5004 4452 Teklif_PDF.exe 95 PID 4452 wrote to memory of 5004 4452 Teklif_PDF.exe 95 PID 4452 wrote to memory of 2456 4452 Teklif_PDF.exe 97 PID 4452 wrote to memory of 2456 4452 Teklif_PDF.exe 97 PID 4452 wrote to memory of 2456 4452 Teklif_PDF.exe 97 PID 4452 wrote to memory of 3572 4452 Teklif_PDF.exe 99 PID 4452 wrote to memory of 3572 4452 Teklif_PDF.exe 99 PID 4452 wrote to memory of 3572 4452 Teklif_PDF.exe 99 PID 4452 wrote to memory of 3696 4452 Teklif_PDF.exe 101 PID 4452 wrote to memory of 3696 4452 Teklif_PDF.exe 101 PID 4452 wrote to memory of 3696 4452 Teklif_PDF.exe 101 PID 4452 wrote to memory of 4776 4452 Teklif_PDF.exe 102 PID 4452 wrote to memory of 4776 4452 Teklif_PDF.exe 102 PID 4452 wrote to memory of 4776 4452 Teklif_PDF.exe 102 PID 4452 wrote to memory of 4776 4452 Teklif_PDF.exe 102 PID 4452 wrote to memory of 4776 4452 Teklif_PDF.exe 102 PID 4452 wrote to memory of 4776 4452 Teklif_PDF.exe 102 PID 4452 wrote to memory of 4776 4452 Teklif_PDF.exe 102 PID 4452 wrote to memory of 4776 4452 Teklif_PDF.exe 102 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\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-1-5-21-2437139445-1151884604-3026847218-1000\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⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4452 -
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:5004
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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:2456
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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\tmpB18D.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:3572
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C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"C:\Users\Admin\AppData\Local\Temp\Teklif_PDF.exe"2⤵PID:3696
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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:4776
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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
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD527f16b490d4f3275f4593ab7606de1cc
SHA1119d4c9cfce7fb3814fcc2514313c342f6184ffe
SHA256879365e177960224cd44f01ddc0877db83d5c35f67c6c2a55ce23c1f0b5fec08
SHA5126399ee04bf6e8e99481ffc664c0da6708b8bfdf4cc676b9aec3056e5a512b5d497f5bbfdd1fa4b67b0eed1eb762f6582a51926c85fec59cbdd46f94f1e5d65ea