Analysis
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max time kernel
118s -
max time network
139s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
15-12-2021 22:29
Static task
static1
Behavioral task
behavioral1
Sample
tmp/f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
tmp/f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
Resource
win10-en-20211208
General
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Target
tmp/f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
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Size
1.5MB
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MD5
8e5e31f5dd73631eddc2cb57e0f48a9a
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SHA1
13bd3cf85edef10be8b60c96334eda4f30eda0ba
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SHA256
356c38de132ad392f3155f48d11f97efbd7892a04499aea67dab5a76e85cb68d
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SHA512
43cf5099575d698ffbd13dc82aa76e2358629d52217cd9d019acfb52c87a29e1ef9750dee756d164787544c76cc68464b014e3f17b3236467952ef95215a94d1
Malware Config
Extracted
matiex
https://api.telegram.org/bot1769394961:AAF5BB35akL859CwVaXypIqpVsGWlaKvi7A/sendMessage?chat_id=1735544933
Signatures
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Matiex Main Payload 5 IoCs
Processes:
resource yara_rule behavioral1/memory/872-62-0x0000000000400000-0x0000000000476000-memory.dmp family_matiex behavioral1/memory/872-63-0x0000000000400000-0x0000000000476000-memory.dmp family_matiex behavioral1/memory/872-64-0x0000000000400000-0x0000000000476000-memory.dmp family_matiex behavioral1/memory/872-65-0x000000000047032E-mapping.dmp family_matiex behavioral1/memory/872-66-0x0000000000400000-0x0000000000476000-memory.dmp family_matiex -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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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 2 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:
f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe Key opened \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe Key opened \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 checkip.dyndns.org 8 freegeoip.app 9 freegeoip.app -
Suspicious use of SetThreadContext 1 IoCs
Processes:
f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exedescription pid process target process PID 976 set thread context of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exepid process 872 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exedescription pid process Token: SeDebugPrivilege 872 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exef4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exedescription pid process target process PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 976 wrote to memory of 872 976 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe PID 872 wrote to memory of 1544 872 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe netsh.exe PID 872 wrote to memory of 1544 872 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe netsh.exe PID 872 wrote to memory of 1544 872 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe netsh.exe PID 872 wrote to memory of 1544 872 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe -
outlook_win_path 1 IoCs
Processes:
f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe"C:\Users\Admin\AppData\Local\Temp\tmp\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\tmp\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe"C:\Users\Admin\AppData\Local\Temp\tmp\f4a9803d-192a-4465-81eb-9dee6b5e5132_vbc.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/872-64-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/872-63-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/872-68-0x00000000058F0000-0x00000000058F1000-memory.dmpFilesize
4KB
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memory/872-66-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/872-62-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/872-60-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/872-65-0x000000000047032E-mapping.dmp
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memory/872-61-0x0000000000400000-0x0000000000476000-memory.dmpFilesize
472KB
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memory/976-56-0x0000000076491000-0x0000000076493000-memory.dmpFilesize
8KB
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memory/976-54-0x0000000000A90000-0x0000000000A91000-memory.dmpFilesize
4KB
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memory/976-59-0x00000000082E0000-0x0000000008453000-memory.dmpFilesize
1.4MB
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memory/976-58-0x0000000000600000-0x0000000000607000-memory.dmpFilesize
28KB
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memory/976-57-0x0000000002370000-0x0000000002371000-memory.dmpFilesize
4KB
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memory/1544-69-0x0000000000000000-mapping.dmp