Analysis
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max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16/10/2024, 05:37
Static task
static1
Behavioral task
behavioral1
Sample
d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe
Resource
win10v2004-20241007-en
General
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Target
d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe
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Size
917KB
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MD5
3395921f981e54180e5801d6389cc3ef
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SHA1
21faeaef86cc8bd47904cbddedd383959292dde8
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SHA256
d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f
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SHA512
d8f3b7afc54f68c67da87dc1100f4cfd00e219cc1ba964e5dbbd2f1b316512a327ac39e335b7b4d1623c3d50c7e5cc4120377fb2ff644e39719bad7457570266
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SSDEEP
12288:ALkcoxg7v3qnC11ErwIhh0F4qwUgUny5Qt/uwbm4Wp4a5LaSI/H:WfmMv6Ckr7Mny5Qt/uw5WW9zv
Malware Config
Signatures
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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Lymnaeidae.vbs Lymnaeidae.exe -
Executes dropped EXE 1 IoCs
pid Process 2472 Lymnaeidae.exe -
Loads dropped DLL 1 IoCs
pid Process 276 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description 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 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.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 -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral1/files/0x00070000000160da-4.dat autoit_exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2472 set thread context of 2264 2472 Lymnaeidae.exe 32 -
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Lymnaeidae.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2264 RegSvcs.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2472 Lymnaeidae.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2264 RegSvcs.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 276 wrote to memory of 2472 276 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe 31 PID 276 wrote to memory of 2472 276 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe 31 PID 276 wrote to memory of 2472 276 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe 31 PID 276 wrote to memory of 2472 276 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe 31 PID 2472 wrote to memory of 2264 2472 Lymnaeidae.exe 32 PID 2472 wrote to memory of 2264 2472 Lymnaeidae.exe 32 PID 2472 wrote to memory of 2264 2472 Lymnaeidae.exe 32 PID 2472 wrote to memory of 2264 2472 Lymnaeidae.exe 32 PID 2472 wrote to memory of 2264 2472 Lymnaeidae.exe 32 PID 2472 wrote to memory of 2264 2472 Lymnaeidae.exe 32 PID 2472 wrote to memory of 2264 2472 Lymnaeidae.exe 32 PID 2472 wrote to memory of 2264 2472 Lymnaeidae.exe 32 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
outlook_win_path 1 IoCs
description 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 RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:276 -
C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2472 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"3⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2264
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
91KB
MD5c3f73714f5eafbd798e3ee600ddf6d1c
SHA1c610a85c868ae0b0916c5157d43e8f6c69045929
SHA256c235999b39489ae2a5830c27b283683e4f1d7510b62a3e5b7b30e457be1caae9
SHA512860e75e98e81d008fb60233c0e3e9a86f374c53ade81f8b6f9c2258cb8918ce09f895069cc12bcf31c494cb1c9265c0f22eaca52d39afea5e84b551b64ed4a57
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Filesize
917KB
MD53395921f981e54180e5801d6389cc3ef
SHA121faeaef86cc8bd47904cbddedd383959292dde8
SHA256d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f
SHA512d8f3b7afc54f68c67da87dc1100f4cfd00e219cc1ba964e5dbbd2f1b316512a327ac39e335b7b4d1623c3d50c7e5cc4120377fb2ff644e39719bad7457570266