Analysis
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max time kernel
93s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
17-12-2024 09:08
Behavioral task
behavioral1
Sample
Nexus/Nexus Executor.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
Nexus/Nexus Executor.exe
Resource
win10v2004-20241007-en
General
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Target
Nexus/Nexus Executor.exe
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Size
41KB
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MD5
a586b36675aec8a5c6ed50e92d388784
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SHA1
68aa3dc9f30bfe1106f5d674a7d44b995879aa24
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SHA256
3ade02051c85f82194e21864aac14868db1d62e925bf66c0ec3a537637ebdaee
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SHA512
b69ac478c26ee6fbbcbdf4b94dd585e9263b51173e8f2f4b8032d7d5421605872a5d3eff3c0fc32fc9e281f0bad9f5471c4ed1543967b1b7935ff14ba57dcba6
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SSDEEP
768:3scaIyIB+ntOwEuZge5WTjQKZKfgm3Eh5s:cc1X+Oe5WTkF7Ers
Malware Config
Extracted
mercurialgrabber
https://discord.com/api/webhooks/1318490592392515594/CaM0cAa4-Oi_iXHBiVS9ZB_zIfBiNf-F8okhA3-1UsMnWScS22GWWOOUK0emIKf2VNCQ
Signatures
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Mercurial Grabber Stealer
Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.
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Mercurialgrabber family
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Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions Nexus Executor.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\VMWare, Inc.\VMWare Tools Nexus Executor.exe -
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Nexus Executor.exe -
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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Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
flow ioc 22 discord.com 23 discord.com 26 discord.com -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 19 ip-api.com 3 ip4.seeip.org -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum Nexus Executor.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 Nexus Executor.exe -
Checks SCSI registry key(s) 3 TTPs 1 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_VMware_&Prod_VMware_Virtual_S Nexus Executor.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 Nexus Executor.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString Nexus Executor.exe -
Enumerates system info in registry 2 TTPs 4 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosInformation Nexus Executor.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemManufacturer Nexus Executor.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemProductName Nexus Executor.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Logical Unit Id 0 Nexus Executor.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4008 Nexus Executor.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Nexus\Nexus Executor.exe"C:\Users\Admin\AppData\Local\Temp\Nexus\Nexus Executor.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Checks SCSI registry key(s)
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:4008
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1