Analysis
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max time kernel
141s -
max time network
122s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 924 Lymnaeidae.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\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 21 checkip.dyndns.org -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral2/files/0x000a000000023b87-5.dat autoit_exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 924 set thread context of 1660 924 Lymnaeidae.exe 88 -
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 1660 RegSvcs.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 924 Lymnaeidae.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1660 RegSvcs.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 3892 wrote to memory of 924 3892 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe 87 PID 3892 wrote to memory of 924 3892 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe 87 PID 3892 wrote to memory of 924 3892 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe 87 PID 924 wrote to memory of 1660 924 Lymnaeidae.exe 88 PID 924 wrote to memory of 1660 924 Lymnaeidae.exe 88 PID 924 wrote to memory of 1660 924 Lymnaeidae.exe 88 PID 924 wrote to memory of 1660 924 Lymnaeidae.exe 88 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\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⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3892 -
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:924 -
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:1660
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
917KB
MD53395921f981e54180e5801d6389cc3ef
SHA121faeaef86cc8bd47904cbddedd383959292dde8
SHA256d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f
SHA512d8f3b7afc54f68c67da87dc1100f4cfd00e219cc1ba964e5dbbd2f1b316512a327ac39e335b7b4d1623c3d50c7e5cc4120377fb2ff644e39719bad7457570266