Analysis
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max time kernel
155s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
19/01/2022, 16:13
Static task
static1
Behavioral task
behavioral1
Sample
85f6edaa9fcf9646a82acef0fdf9873c.xll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
85f6edaa9fcf9646a82acef0fdf9873c.xll
Resource
win10v2004-en-20220112
General
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Target
85f6edaa9fcf9646a82acef0fdf9873c.xll
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Size
1.7MB
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MD5
85f6edaa9fcf9646a82acef0fdf9873c
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SHA1
42d69db511a6957edf4ad4debd64fa9f9ff8e870
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SHA256
b31cdc9d1f82f0e85faedf8a95cddcfb94ea68db5c9a496a4365db19b7272380
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SHA512
fddf8ecf4186351d80378e6650ca1bc8a60191c16ea715271f0d23c50c024d1d1ac61ee176969c6cbf016b28b322b74de02aa8dcc99e3d23c0fab8896493325b
Malware Config
Extracted
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 2940 632 rundll32.exe 50 -
Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral2/memory/2940-157-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 -
Blocklisted process makes network request 1 IoCs
flow pid Process 53 2940 rundll32.exe -
Loads dropped DLL 3 IoCs
pid Process 632 EXCEL.EXE 632 EXCEL.EXE 2940 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 632 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 632 EXCEL.EXE 632 EXCEL.EXE 632 EXCEL.EXE 632 EXCEL.EXE 632 EXCEL.EXE 632 EXCEL.EXE 632 EXCEL.EXE 632 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 632 wrote to memory of 2940 632 EXCEL.EXE 56 PID 632 wrote to memory of 2940 632 EXCEL.EXE 56
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\85f6edaa9fcf9646a82acef0fdf9873c.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:632 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectQ.dll , dopt2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
PID:2940
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p1⤵PID:2352