Analysis
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max time kernel
118s -
max time network
136s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
19/01/2022, 12:50
Static task
static1
Behavioral task
behavioral1
Sample
d3dbd89bf43c2ade8f0c590ab831f5a3b200bb5bf370a13450523ef9f094437f.xll
Resource
win10-en-20211208
General
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Target
d3dbd89bf43c2ade8f0c590ab831f5a3b200bb5bf370a13450523ef9f094437f.xll
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Size
1.7MB
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MD5
bd4953dbce803a724515c75235cd92c0
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SHA1
2a5b7dc3122d036ce3d1afa22b2fc26c15841b11
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SHA256
d3dbd89bf43c2ade8f0c590ab831f5a3b200bb5bf370a13450523ef9f094437f
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SHA512
9569783104c9ba89bc2b86f99f2b10a156f372c31f5b90300d89f192fdfb2b07ef2ada2fb3dfe3bc52fc31b3ef8bd3678431c4b9b5b5b0a87ec1ab30e352ca82
Malware Config
Signatures
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Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4984 3996 rundll32.exe 68 -
Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral1/memory/4984-263-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 -
Loads dropped DLL 3 IoCs
pid Process 3996 EXCEL.EXE 3996 EXCEL.EXE 4984 rundll32.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process 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 Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 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 3996 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE 3996 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3996 wrote to memory of 4984 3996 EXCEL.EXE 70 PID 3996 wrote to memory of 4984 3996 EXCEL.EXE 70
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\d3dbd89bf43c2ade8f0c590ab831f5a3b200bb5bf370a13450523ef9f094437f.xll"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3996 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectiveP.dll , dopt2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:4984
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