Analysis
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max time kernel
142s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231020-en -
resource tags
arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system -
submitted
16/11/2023, 01:30
Static task
static1
Behavioral task
behavioral1
Sample
=?UTF-8?B?b3V0ZG9vciBTcGEgQ2F0YWxvZ3VlLnhscw==?=.xls
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
=?UTF-8?B?b3V0ZG9vciBTcGEgQ2F0YWxvZ3VlLnhscw==?=.xls
Resource
win10v2004-20231020-en
General
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Target
=?UTF-8?B?b3V0ZG9vciBTcGEgQ2F0YWxvZ3VlLnhscw==?=.xls
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Size
2.4MB
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MD5
9ba93c794e333a914d8545aa39471800
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SHA1
07c2ca9b59a5f593d6ac63ab8d0a3be1b9310e6a
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SHA256
2ebcf0d15cd1d8e6ee7b0395a3036aad32843a7a7e67f798228fa9843971602a
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SHA512
8c7c34cd56d7cb79dc35f5e39c2816a97afc83981cf4073811fc4e8ad389da9d6c9e8d54a0ac13bb624b656a370925eec55a25f7bdaf0ddf586f8797d593eedd
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SSDEEP
49152:ld5uivjK/j5nHVUoqopSV9EDVqBqBybS7u5ZySf+1FxGQsdVRa:tuYjgj5nHVZoUzQM+qGQsdVRa
Malware Config
Signatures
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 452 EXCEL.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeManageVolumePrivilege 5072 svchost.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 452 EXCEL.EXE 452 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE 452 EXCEL.EXE
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\=_UTF-8_B_b3V0ZG9vciBTcGEgQ2F0YWxvZ3VlLnhscw==_=.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:452
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵PID:4248
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5072