Analysis
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max time kernel
148s -
max time network
134s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
13-01-2022 03:06
Behavioral task
behavioral1
Sample
5e9b0c9265b7d3fc1ff598bf2c6da327b90d200944fc0462f1079231b5403185.xlsm
Resource
win10-en-20211208
Behavioral task
behavioral2
Sample
5e9b0c9265b7d3fc1ff598bf2c6da327b90d200944fc0462f1079231b5403185.xlsm
Resource
win10-en-20211208
General
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Target
5e9b0c9265b7d3fc1ff598bf2c6da327b90d200944fc0462f1079231b5403185.xlsm
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Size
83KB
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MD5
768a5a75fdb699b7d42714d8fb938354
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SHA1
88c2fad607882ebbac3bc9b885c3ad043c43282a
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SHA256
5e9b0c9265b7d3fc1ff598bf2c6da327b90d200944fc0462f1079231b5403185
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SHA512
67be206ec923b8ae81720cc43c76cbf0c2da4b3251cb537d827bbf7bb16258db862ad4b0c173f3ac44fdea2a759c477c157f60dce2466eba126d0436751656a3
Malware Config
Extracted
https://digitalcardsbychivami.xyz/includes/KrPj/
Signatures
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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 2700 4144 rundll32.exe 67 -
Loads dropped DLL 2 IoCs
pid Process 2700 rundll32.exe 4900 rundll32.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Awiyoenbgcfgozh\szqwhecn.ezl rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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 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 4144 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE 4144 EXCEL.EXE -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4144 wrote to memory of 2700 4144 EXCEL.EXE 71 PID 4144 wrote to memory of 2700 4144 EXCEL.EXE 71 PID 4144 wrote to memory of 2700 4144 EXCEL.EXE 71 PID 2700 wrote to memory of 4900 2700 rundll32.exe 72 PID 2700 wrote to memory of 4900 2700 rundll32.exe 72 PID 2700 wrote to memory of 4900 2700 rundll32.exe 72 PID 4900 wrote to memory of 5060 4900 rundll32.exe 75 PID 4900 wrote to memory of 5060 4900 rundll32.exe 75 PID 4900 wrote to memory of 5060 4900 rundll32.exe 75
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\5e9b0c9265b7d3fc1ff598bf2c6da327b90d200944fc0462f1079231b5403185.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4144 -
C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe ..\dwa.ocx,D"&"l"&"lR"&"egister"&"Server2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2700 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\dwa.ocx",DllRegisterServer3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4900 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Awiyoenbgcfgozh\szqwhecn.ezl",nWuPl4⤵PID:5060
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