Analysis
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max time kernel
127s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
29-11-2024 11:33
Static task
static1
Behavioral task
behavioral1
Sample
tmp1u2e_efl.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
tmp1u2e_efl.exe
Resource
win10v2004-20241007-en
General
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Target
tmp1u2e_efl.exe
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Size
803KB
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MD5
4123e0b7da19f26d9e99e29e7a618911
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SHA1
430b1daf4bb38220b3dc85a1b34c0b1b532a1f01
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SHA256
6c9e54f7f42bd5c8c7e8dc0c34ba0961d95513db27c854ce83e8206d6f4c1b9b
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SHA512
c5b588612b4d58231e74b10fb2bdf1369aa03752333950ef8b61a43f2e2b64bed8da52a1ec68c63030a6f3686a21c43eccb0562d873fa05e6780d24242f58aa8
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SSDEEP
24576:61MqxjvCNra98jjW4wYOI5fHsAbXWgaoOz:6mqIMQDjOCTWg
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
mail.hgdijitalbaski.com - Port:
587 - Username:
[email protected] - Password:
05310325799habil - 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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
tmp1u2e_efl.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation tmp1u2e_efl.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
Processes:
tmp1u2e_efl.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp1u2e_efl.exe Key opened \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp1u2e_efl.exe Key opened \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp1u2e_efl.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 22 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
tmp1u2e_efl.exedescription pid Process procid_target PID 2100 set thread context of 3736 2100 tmp1u2e_efl.exe 92 -
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:
tmp1u2e_efl.exetmp1u2e_efl.exepowershell.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp1u2e_efl.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp1u2e_efl.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
tmp1u2e_efl.exetmp1u2e_efl.exepowershell.exepid Process 2100 tmp1u2e_efl.exe 2100 tmp1u2e_efl.exe 2100 tmp1u2e_efl.exe 2100 tmp1u2e_efl.exe 3736 tmp1u2e_efl.exe 1100 powershell.exe 1100 powershell.exe 3736 tmp1u2e_efl.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
tmp1u2e_efl.exetmp1u2e_efl.exepowershell.exedescription pid Process Token: SeDebugPrivilege 2100 tmp1u2e_efl.exe Token: SeDebugPrivilege 3736 tmp1u2e_efl.exe Token: SeDebugPrivilege 1100 powershell.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
tmp1u2e_efl.exedescription pid Process procid_target PID 2100 wrote to memory of 1100 2100 tmp1u2e_efl.exe 89 PID 2100 wrote to memory of 1100 2100 tmp1u2e_efl.exe 89 PID 2100 wrote to memory of 1100 2100 tmp1u2e_efl.exe 89 PID 2100 wrote to memory of 4912 2100 tmp1u2e_efl.exe 91 PID 2100 wrote to memory of 4912 2100 tmp1u2e_efl.exe 91 PID 2100 wrote to memory of 4912 2100 tmp1u2e_efl.exe 91 PID 2100 wrote to memory of 3736 2100 tmp1u2e_efl.exe 92 PID 2100 wrote to memory of 3736 2100 tmp1u2e_efl.exe 92 PID 2100 wrote to memory of 3736 2100 tmp1u2e_efl.exe 92 PID 2100 wrote to memory of 3736 2100 tmp1u2e_efl.exe 92 PID 2100 wrote to memory of 3736 2100 tmp1u2e_efl.exe 92 PID 2100 wrote to memory of 3736 2100 tmp1u2e_efl.exe 92 PID 2100 wrote to memory of 3736 2100 tmp1u2e_efl.exe 92 PID 2100 wrote to memory of 3736 2100 tmp1u2e_efl.exe 92 -
outlook_office_path 1 IoCs
Processes:
tmp1u2e_efl.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp1u2e_efl.exe -
outlook_win_path 1 IoCs
Processes:
tmp1u2e_efl.exedescription ioc Process Key opened \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 tmp1u2e_efl.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe"C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.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:2100 -
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\tmp1u2e_efl.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1100
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C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe"C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe"2⤵PID:4912
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C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe"C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.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:3736
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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
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82