Analysis
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max time kernel
131s -
max time network
142s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
19/01/2022, 09:23
Static task
static1
Behavioral task
behavioral1
Sample
9bfe3e664dea6ec4c143d6beb35b7cef737163ee64f78e06e4d779859c046138.xll
Resource
win10-en-20211208
General
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Target
9bfe3e664dea6ec4c143d6beb35b7cef737163ee64f78e06e4d779859c046138.xll
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Size
1.7MB
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MD5
13bc88ede0b07077de8c91f1d552939b
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SHA1
f517a3933b6aaffe605b8a625c34eeff2ac53cb9
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SHA256
9bfe3e664dea6ec4c143d6beb35b7cef737163ee64f78e06e4d779859c046138
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SHA512
1814fd33d280e20c5f53e19de0ace86c4e98abf785ef351837458f0b4660bdae3c377bb6a5eda8881fd0ea8b0bde28ed98a319839e747f118422bfda9de2662e
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 2028 684 rundll32.exe 68 -
Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral1/memory/2028-269-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 -
Blocklisted process makes network request 2 IoCs
flow pid Process 54 2028 rundll32.exe 55 2028 rundll32.exe -
Loads dropped DLL 3 IoCs
pid Process 684 EXCEL.EXE 684 EXCEL.EXE 2028 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 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 684 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 684 EXCEL.EXE 684 EXCEL.EXE 684 EXCEL.EXE 684 EXCEL.EXE 684 EXCEL.EXE 684 EXCEL.EXE 684 EXCEL.EXE 684 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 684 wrote to memory of 2028 684 EXCEL.EXE 72 PID 684 wrote to memory of 2028 684 EXCEL.EXE 72
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\9bfe3e664dea6ec4c143d6beb35b7cef737163ee64f78e06e4d779859c046138.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:684 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectY.dll , dopt2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
PID:2028
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