Malware Analysis Report

2025-08-11 06:36

Sample ID 241016-gbfa9azbll
Target d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe
SHA256 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f
Tags
collection discovery
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f

Threat Level: Shows suspicious behavior

The file d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe was found to be: Shows suspicious behavior.

Malicious Activity Summary

collection discovery

Executes dropped EXE

Drops startup file

Loads dropped DLL

Looks up external IP address via web service

Accesses Microsoft Outlook profiles

Suspicious use of SetThreadContext

AutoIT Executable

Enumerates physical storage devices

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-16 05:37

Signatures

AutoIT Executable

Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-16 05:37

Reported

2024-10-16 05:40

Platform

win7-20240903-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Lymnaeidae.vbs C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe N/A

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

AutoIT Executable

Description Indicator Process Target
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2472 set thread context of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 276 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe
PID 276 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe
PID 276 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe
PID 276 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe
PID 2472 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2472 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2472 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2472 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2472 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2472 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2472 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2472 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe

"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"

C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe

"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 checkip.dyndns.org udp
DE 193.122.6.168:80 checkip.dyndns.org tcp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 172.67.177.134:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp

Files

memory/276-2-0x00000000036E0000-0x00000000038E0000-memory.dmp

\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe

MD5 3395921f981e54180e5801d6389cc3ef
SHA1 21faeaef86cc8bd47904cbddedd383959292dde8
SHA256 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f
SHA512 d8f3b7afc54f68c67da87dc1100f4cfd00e219cc1ba964e5dbbd2f1b316512a327ac39e335b7b4d1623c3d50c7e5cc4120377fb2ff644e39719bad7457570266

C:\Users\Admin\AppData\Local\Temp\silvexes

MD5 c3f73714f5eafbd798e3ee600ddf6d1c
SHA1 c610a85c868ae0b0916c5157d43e8f6c69045929
SHA256 c235999b39489ae2a5830c27b283683e4f1d7510b62a3e5b7b30e457be1caae9
SHA512 860e75e98e81d008fb60233c0e3e9a86f374c53ade81f8b6f9c2258cb8918ce09f895069cc12bcf31c494cb1c9265c0f22eaca52d39afea5e84b551b64ed4a57

memory/2472-12-0x0000000003A40000-0x0000000003C40000-memory.dmp

memory/2264-14-0x0000000000400000-0x000000000041E000-memory.dmp

memory/2264-16-0x0000000000400000-0x000000000041E000-memory.dmp

memory/2264-18-0x0000000000400000-0x000000000041E000-memory.dmp

memory/2264-19-0x000000007411E000-0x000000007411F000-memory.dmp

memory/2264-20-0x0000000074110000-0x00000000747FE000-memory.dmp

memory/2264-21-0x000000007411E000-0x000000007411F000-memory.dmp

memory/2264-22-0x0000000074110000-0x00000000747FE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-16 05:37

Reported

2024-10-16 05:40

Platform

win10v2004-20241007-en

Max time kernel

141s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Lymnaeidae.vbs C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe N/A

Accesses Microsoft Outlook profiles

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A checkip.dyndns.org N/A N/A

AutoIT Executable

Description Indicator Process Target
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 924 set thread context of 1660 N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

outlook_office_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

outlook_win_path

Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe

"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"

C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe

"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"C:\Users\Admin\AppData\Local\Temp\d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 checkip.dyndns.org udp
JP 132.226.8.169:80 checkip.dyndns.org tcp
US 8.8.8.8:53 169.8.226.132.in-addr.arpa udp
US 8.8.8.8:53 reallyfreegeoip.org udp
US 172.67.177.134:443 reallyfreegeoip.org tcp
US 8.8.8.8:53 134.177.67.172.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/3892-2-0x0000000004050000-0x0000000004250000-memory.dmp

C:\Users\Admin\AppData\Local\contrapose\Lymnaeidae.exe

MD5 3395921f981e54180e5801d6389cc3ef
SHA1 21faeaef86cc8bd47904cbddedd383959292dde8
SHA256 d356e576ddb8d4268bd6b15175273d3f445ae8a923b3b2efb3f5231515da2f5f
SHA512 d8f3b7afc54f68c67da87dc1100f4cfd00e219cc1ba964e5dbbd2f1b316512a327ac39e335b7b4d1623c3d50c7e5cc4120377fb2ff644e39719bad7457570266

C:\Users\Admin\AppData\Local\Temp\silvexes

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

memory/924-10-0x0000000003F40000-0x0000000004340000-memory.dmp

memory/1660-12-0x0000000000400000-0x000000000041E000-memory.dmp

memory/1660-13-0x0000000074FFE000-0x0000000074FFF000-memory.dmp

memory/1660-14-0x00000000056F0000-0x0000000005C94000-memory.dmp

memory/1660-15-0x0000000005140000-0x00000000051DC000-memory.dmp

memory/1660-16-0x0000000074FF0000-0x00000000757A0000-memory.dmp

memory/1660-17-0x00000000061F0000-0x0000000006240000-memory.dmp

memory/1660-18-0x0000000006610000-0x00000000067D2000-memory.dmp

memory/1660-19-0x0000000006520000-0x00000000065B2000-memory.dmp

memory/1660-20-0x0000000006510000-0x000000000651A000-memory.dmp

memory/1660-21-0x0000000074FFE000-0x0000000074FFF000-memory.dmp

memory/1660-22-0x0000000074FF0000-0x00000000757A0000-memory.dmp