Analysis
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max time kernel
103s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
18-10-2022 15:55
Behavioral task
behavioral1
Sample
build.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
build.exe
Resource
win10v2004-20220812-en
General
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Target
build.exe
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Size
42KB
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MD5
e5ed31eacaa22632d624665db147dbfb
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SHA1
934be681382257543f6a238e4a6e1501f17c509e
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SHA256
4a9b15ea365f53ee622297f6b327a29bad29d4a770ea14db6383332a887f2903
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SHA512
3294b1e814804ac3109a523f2dfb4971fa6111856d93debaf7834b7e04649fc8276501f3ecdc9e52bff2bbefef7b3e1f173d7e0ed83f6e96f12c6a5423f11e9e
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SSDEEP
768:ZeJ7zhgOpRTs+ZeBuZnLbvTjvKZKfgm3Ehrd:QpRTNZZLbvTbF7Ehd
Malware Config
Extracted
mercurialgrabber
https://discord.com/api/webhooks/973691590818283530/VN5D_TemtqICFOIh1MeBxHcD4dkZrmfj0CdiCFkE4Z31iL6FHnEDdwF22nZWiOqto8uo
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:
build.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions build.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
Processes:
build.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\VMWare, Inc.\VMWare Tools build.exe -
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
build.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion build.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 9 ip4.seeip.org 12 ip-api.com 8 ip4.seeip.org -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
build.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum build.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 build.exe -
Checks SCSI registry key(s) 3 TTPs 1 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
build.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_VMware_&Prod_VMware_Virtual_S build.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
build.exedescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 build.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString build.exe -
Enumerates system info in registry 2 TTPs 4 IoCs
Processes:
build.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemProductName build.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Logical Unit Id 0 build.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosInformation build.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemManufacturer build.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
build.exedescription pid process Token: SeDebugPrivilege 4172 build.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\build.exe"C:\Users\Admin\AppData\Local\Temp\build.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