Analysis
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max time kernel
14s -
max time network
19s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
10-08-2022 22:52
Behavioral task
behavioral1
Sample
arkrillia.exe
Resource
win10v2004-20220721-en
General
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Target
arkrillia.exe
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Size
205KB
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MD5
66aff825cf20a4a56cbb6fe58813f109
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SHA1
a4080cb5ce0548ce62f48c05d2cbad30cc42c632
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SHA256
a132009149d0fb7b4ba7819bead8513632c20cb4a60714fc48c0a540b151023d
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SHA512
0028aaec3fda2a42d980e60a4519d1df106b865c465a2a20b75ac1173162f6911fa774978326eed5143d36c68694c60d395c3297ad800e54fed7e2c17e48b9d6
Malware Config
Extracted
mercurialgrabber
https://discord.com/api/webhooks/1007016849067737268/1_b8HSIrgq2JeCOH3L_DfjnxZdYrRclgRzadvbl_NmT5qaXgL7nX2ZYCcPjoGqVeN791
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:
arkrillia.exedescription ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions arkrillia.exe -
Looks for VMWare Tools registry key 2 TTPs 1 IoCs
Processes:
arkrillia.exedescription ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\VMWare, Inc.\VMWare Tools arkrillia.exe -
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
arkrillia.exedescription ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion arkrillia.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 5 ip4.seeip.org 6 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:
arkrillia.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum arkrillia.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 arkrillia.exe -
Checks SCSI registry key(s) 3 TTPs 1 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
arkrillia.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_VMware_&Prod_VMware_Virtual_S arkrillia.exe -
Enumerates system info in registry 2 TTPs 4 IoCs
Processes:
arkrillia.exedescription ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemProductName arkrillia.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Logical Unit Id 0 arkrillia.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosInformation arkrillia.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemManufacturer arkrillia.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
arkrillia.exedescription pid Process Token: SeDebugPrivilege 4556 arkrillia.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\arkrillia.exe"C:\Users\Admin\AppData\Local\Temp\arkrillia.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)
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:4556