Analysis
-
max time kernel
101s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
14-03-2024 16:27
Static task
static1
Behavioral task
behavioral1
Sample
23-FlsEngine.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
23-FlsEngine.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral3
Sample
core/23-FlsEngine-Easy-Core.dll
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
core/23-FlsEngine-Easy-Core.dll
Resource
win10v2004-20240226-en
Behavioral task
behavioral5
Sample
必看使用说明.xls
Resource
win7-20240220-en
Behavioral task
behavioral6
Sample
必看使用说明.xls
Resource
win10v2004-20231215-en
General
-
Target
必看使用说明.xls
-
Size
4.4MB
-
MD5
22cf389bf3bdb1ab0967e826c78e0f36
-
SHA1
cb4ff1d1e273f4a836726628eba641b4683da8ef
-
SHA256
da58b3604584c837956abf067991ac211835a75d348e2bfd8e634ed3829e9a92
-
SHA512
9b4fc21b0838b38a7b223b34fc25815e5be7fbae82e2b0120a8c1a9d2a39aae8001c7a7d4a2f7c18badabd37c3f3089c21f724cdfca19c81fa05f8ba600f9af6
-
SSDEEP
98304:M3anyH5qaNryFeK3H/svU9RuGrbWkm6DFH//fBBV/X:M3KUNG4MHEYbtDF3pf
Malware Config
Signatures
-
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 opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1704 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 9 IoCs
pid Process 1704 EXCEL.EXE 1704 EXCEL.EXE 1704 EXCEL.EXE 1704 EXCEL.EXE 1704 EXCEL.EXE 1704 EXCEL.EXE 1704 EXCEL.EXE 1704 EXCEL.EXE 1704 EXCEL.EXE
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\必看使用说明.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1704