Analysis
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max time kernel
73s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
16-10-2022 19:43
Behavioral task
behavioral1
Sample
builde.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
builde.exe
Resource
win10v2004-20220812-en
General
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Target
builde.exe
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Size
42KB
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MD5
61585bc08c492543367fb6f502a8bd23
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SHA1
f5806703a062164eb3814fbb469a265d54b6421e
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SHA256
4429a6b49476f490cf1cce795fd9d300dc7e3b21a2b32d17220232879b1e6cc4
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SHA512
5aa42422389aeb8083daa0c5c3ae6f7ff9c581240259eedef81f4040382298df3705834be01c5e5742c3f74648bb921ac5ea67c039453f4567da724dcd084ab0
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SSDEEP
768:8IFHiOZERp2NGnuZ6Ll0TjBKZKfgm3EhHY:8sJ0pAG3Ll0TNF7EdY
Malware Config
Extracted
mercurialgrabber
https://discord.com/api/webhooks/937358542946582558/WyTs8FknKuSjX8_wJHCOQowDJcztuN9Va4y_rvGItjEIgKocBXOrIpsCe-NUpgC3wDGV
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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Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
Processes:
builde.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions builde.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
Processes:
builde.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\VMWare, Inc.\VMWare Tools builde.exe -
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
builde.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion builde.exe -
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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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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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 7 ip4.seeip.org 8 ip4.seeip.org 10 ip-api.com -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
builde.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum builde.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 builde.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 3392 5084 WerFault.exe builde.exe -
Checks SCSI registry key(s) 3 TTPs 1 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
builde.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_VMware_&Prod_VMware_Virtual_S builde.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
builde.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 builde.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString builde.exe -
Enumerates system info in registry 2 TTPs 4 IoCs
Processes:
builde.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemProductName builde.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Logical Unit Id 0 builde.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosInformation builde.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemManufacturer builde.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
builde.exedescription pid process Token: SeDebugPrivilege 5084 builde.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\builde.exe"C:\Users\Admin\AppData\Local\Temp\builde.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
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 5084 -s 21482⤵
- Program crash
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 456 -p 5084 -ip 50841⤵