Malware Analysis Report

2025-01-02 05:42

Sample ID 241006-nzlaqsscnn
Target GrabberBuilder.exe
SHA256 56f44437618196097836457153108f24370c94cad2f078076e96221797ddff10
Tags
themida sectoprat discovery evasion rat trojan
score
10/10

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 Overview

score
10/10

SHA256

56f44437618196097836457153108f24370c94cad2f078076e96221797ddff10

Threat Level: Known bad

The file GrabberBuilder.exe was found to be: Known bad.

Malicious Activity Summary

themida sectoprat discovery evasion rat trojan

SectopRAT

SectopRAT payload

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Checks BIOS information in registry

Themida packer

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

System Location Discovery: System Language Discovery

Modifies Internet Explorer settings

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Modifies registry class

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-06 11:50

Signatures

Themida packer

themida
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

2024-10-06 11:50

Reported

2024-10-06 11:51

Platform

win11-20240802-en

Max time kernel

31s

Max time network

32s

Command Line

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

Signatures

SectopRAT

trojan rat sectoprat

SectopRAT payload

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

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\GrabberBuilder.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\GrabberBuilder.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\GrabberBuilder.exe N/A

Themida packer

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

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\GrabberBuilder.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

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\GrabberBuilder.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "8" C:\Program Files\Internet Explorer\iexplore.exe N/A
Key created \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation C:\Program Files\Internet Explorer\iexplore.exe N/A
Key created \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\GPU C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "395196024" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "0" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\GPU\SoftwareFallback = "0" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\GPU\SubSysId = "0" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "0" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "268435456" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateHighDateTime = "31135780" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListDomainAttributeSet = "0" C:\Program Files\Internet Explorer\iexplore.exe N/A
Key created \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\VersionManager C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\Protected - It is a violation of Windows Policy to modify. See aka.ms/browserpolicy\HomepagesUpgradeVersion = "1" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPMigrationVer = "1" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "9" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionHigh = "268435456" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\GPU\Revision = "0" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "1" C:\Program Files\Internet Explorer\iexplore.exe N/A
Key created \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\Protected - It is a violation of Windows Policy to modify. See aka.ms/browserpolicy C:\Program Files\Internet Explorer\iexplore.exe N/A
Key created \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\Main C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\GPU\VendorId = "4318" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize = "1" C:\Program Files\Internet Explorer\iexplore.exe N/A
Key created \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "0" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionLow = "395196024" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "13" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\GPU\DeviceId = "140" C:\Program Files\Internet Explorer\iexplore.exe N/A
Set value (int) \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateLowDateTime = "2787366272" C:\Program Files\Internet Explorer\iexplore.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-970747758-134341002-3585657277-1000_Classes\Local Settings\MuiCache C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\GrabberBuilder.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe N/A

Processes

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

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

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe

"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca

C:\Program Files\Internet Explorer\iexplore.exe

"C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\SubmitApprove.gif

Network

Country Destination Domain Proto
GB 51.89.201.41:29254 tcp
GB 92.123.128.182:443 tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
GB 92.123.128.176:443 r.bing.com tcp
US 20.189.173.27:443 browser.pipe.aria.microsoft.com tcp
GB 51.89.201.41:29254 tcp

Files

memory/2088-0-0x0000000000400000-0x0000000000D28000-memory.dmp

memory/2088-1-0x0000000076726000-0x0000000076727000-memory.dmp

memory/2088-3-0x0000000076710000-0x0000000076800000-memory.dmp

memory/2088-2-0x0000000076710000-0x0000000076800000-memory.dmp

memory/2088-4-0x0000000076710000-0x0000000076800000-memory.dmp

memory/2088-6-0x0000000000400000-0x0000000000D28000-memory.dmp

memory/2088-7-0x0000000000400000-0x0000000000D28000-memory.dmp

memory/2088-8-0x0000000005440000-0x0000000005A58000-memory.dmp

memory/2088-9-0x0000000003150000-0x0000000003162000-memory.dmp

memory/2088-10-0x0000000003170000-0x00000000031AC000-memory.dmp

memory/2088-11-0x00000000031D0000-0x000000000321C000-memory.dmp

memory/2088-12-0x0000000005B90000-0x0000000005C9A000-memory.dmp

memory/2088-13-0x0000000000400000-0x0000000000D28000-memory.dmp

memory/2088-14-0x0000000076726000-0x0000000076727000-memory.dmp

memory/2088-15-0x0000000076710000-0x0000000076800000-memory.dmp

memory/2088-16-0x0000000076710000-0x0000000076800000-memory.dmp

memory/2088-18-0x0000000076710000-0x0000000076800000-memory.dmp

C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

MD5 cd6829f53a60318a54648f4ff9d694c2
SHA1 eda672c23f219a9cdbe740079412f5fbe04a157d
SHA256 5410184dfd5ef071de14c78cc7e9488049a85e313a3454250d53e974251ac906
SHA512 25a54ac013419868211b704a9b1f4cbc7c0a5b1a0e10cec09cd8eee3fbde7497e36c8e35f0506622eb9a47939c2c6b9590bf9bbf8d43508be13d7f85f7838ec9