Analysis
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max time kernel
118s -
max time network
136s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
19/01/2022, 03:45
Static task
static1
Behavioral task
behavioral1
Sample
a2e85069fc46ebd9d42f5032342656337b40583c3f94f82f653e17dd5bae7f5f.xll
Resource
win10-en-20211208
General
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Target
a2e85069fc46ebd9d42f5032342656337b40583c3f94f82f653e17dd5bae7f5f.xll
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Size
1.7MB
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MD5
3ac316aac73c0740b4991a78b88832bf
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SHA1
5b9890709fb8c6a3f22868992fed7dbc2dfcc003
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SHA256
a2e85069fc46ebd9d42f5032342656337b40583c3f94f82f653e17dd5bae7f5f
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SHA512
fba4392e148a1dc6c4214217cddea51f104b1b193a4dd4eca5b904fd5a96bc68bc4988ab02a22ea0d576f081b4154931813c2a957697ed9613bde0afd8690c0a
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 2452 1052 rundll32.exe 68 -
Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral1/memory/2452-901-0x0000000180000000-0x000000018003C000-memory.dmp BazarLoaderVar5 -
Loads dropped DLL 3 IoCs
pid Process 1052 EXCEL.EXE 1052 EXCEL.EXE 2452 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\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 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 1052 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 1052 EXCEL.EXE 1052 EXCEL.EXE 1052 EXCEL.EXE 1052 EXCEL.EXE 1052 EXCEL.EXE 1052 EXCEL.EXE 1052 EXCEL.EXE 1052 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 1052 wrote to memory of 2452 1052 EXCEL.EXE 72 PID 1052 wrote to memory of 2452 1052 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\a2e85069fc46ebd9d42f5032342656337b40583c3f94f82f653e17dd5bae7f5f.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:1052 -
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectJ.dll , dopt2⤵
- Process spawned unexpected child process
- Loads dropped DLL
PID:2452
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