Analysis
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max time kernel
148s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
05-03-2023 18:59
Behavioral task
behavioral1
Sample
quakbot_final_unprotected_modified.xlsb
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
quakbot_final_unprotected_modified.xlsb
Resource
win10v2004-20230220-en
General
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Target
quakbot_final_unprotected_modified.xlsb
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Size
232KB
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MD5
322ff8c05e66a73cc08d5b6c42516688
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SHA1
6055b6a8e199148210fd89dda63c2fd370da05d0
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SHA256
ca9942948788e3ee645cab81b10713bc8f5a051bd00e6eb9be717b38d0a199ca
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SHA512
da9c5ef7a0a8db1beac329b98f0e1befa420558e932ee781975b1e1c96af955e3ff1c8e5f46b75557136a106ca2f43bce50d090a565f73507bf34f3b2b756af2
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SSDEEP
3072:16wcOaz6kqB/EsWcXCJGbtyntvHGiYMnIOwKSIYFUQRLmTDBwszHbcOQafZD2dd:16wh5nRXCw+DnIdFUKmTDBwsz7c1yDQd
Malware Config
Extracted
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 4876 2528 cmd.exe 79 -
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 2528 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2528 EXCEL.EXE 2528 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2528 wrote to memory of 4876 2528 EXCEL.EXE 86 PID 2528 wrote to memory of 4876 2528 EXCEL.EXE 86
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\quakbot_final_unprotected_modified.xlsb"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2528 -
C:\Windows\SYSTEM32\cmd.execmd.exe /C "echo test > C:\cvoVIZCVkvcfkc\flag.txt"2⤵
- Process spawned unexpected child process
PID:4876
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