Analysis
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max time kernel
129s -
max time network
153s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
19/01/2022, 13:55
Static task
static1
Behavioral task
behavioral1
Sample
56d8a969497fe0cf90aa6e71c8f7c1a2e76b621d0b18876db8e3ca198a7b4350.xll
Resource
win10-en-20211208
General
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Target
56d8a969497fe0cf90aa6e71c8f7c1a2e76b621d0b18876db8e3ca198a7b4350.xll
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Size
1.7MB
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MD5
f198da6e1ffc5c8e76e126412f6a0fe8
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SHA1
e3f2a10f79f2b07e2a80c5d218e15cc1ae3b9a8e
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SHA256
56d8a969497fe0cf90aa6e71c8f7c1a2e76b621d0b18876db8e3ca198a7b4350
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SHA512
e72f270c1b75748fc04201bb774eec09fdf6113f6e41f83a4a0dba55e253fd50a7579fae8ed38eb01fd1072980455373d1fb2413d4e84449b22d569e1fe991e5
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 2112 3596 rundll32.exe 68 -
Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral1/memory/2112-263-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 -
Blocklisted process makes network request 4 IoCs
flow pid Process 46 2112 rundll32.exe 48 2112 rundll32.exe 51 2112 rundll32.exe 52 2112 rundll32.exe -
Loads dropped DLL 3 IoCs
pid Process 3596 EXCEL.EXE 3596 EXCEL.EXE 2112 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 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 3596 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 3596 EXCEL.EXE 3596 EXCEL.EXE 3596 EXCEL.EXE 3596 EXCEL.EXE 3596 EXCEL.EXE 3596 EXCEL.EXE 3596 EXCEL.EXE 3596 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3596 wrote to memory of 2112 3596 EXCEL.EXE 70 PID 3596 wrote to memory of 2112 3596 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\56d8a969497fe0cf90aa6e71c8f7c1a2e76b621d0b18876db8e3ca198a7b4350.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:3596 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectG.dll , dopt2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
PID:2112
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