Analysis
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max time kernel
169s -
max time network
160s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
09/11/2022, 19:10
Behavioral task
behavioral1
Sample
a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430.xls
Resource
win10-20220812-en
Behavioral task
behavioral2
Sample
a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430.xls
Resource
win10-20220812-en
General
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Target
a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430.xls
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Size
91KB
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MD5
50edf8e28a4c5f13e49b31a07ce50ab5
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SHA1
73dcd5bb08692eedccc64c5e42d450acb4961ea9
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SHA256
a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430
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SHA512
3c2ec56da9616f23a69ededeeb21cfc86d7e5750701a14e498e2a5e21bf99316175f90330cc0c8cad6224a9ea28a61624112b7132277c1b7a72d0e98d7024772
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SSDEEP
1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZMEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgF
Malware Config
Extracted
http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/
http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/
https://wijsneusmedia.nl/cgi-bin/kFB/
http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/
Signatures
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Process spawned unexpected child process 4 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 4248 3100 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4780 3100 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4480 3100 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3796 3100 regsvr32.exe 65 -
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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3100 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 3100 EXCEL.EXE 3100 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE 3100 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3100 wrote to memory of 4248 3100 EXCEL.EXE 68 PID 3100 wrote to memory of 4248 3100 EXCEL.EXE 68 PID 3100 wrote to memory of 4780 3100 EXCEL.EXE 69 PID 3100 wrote to memory of 4780 3100 EXCEL.EXE 69 PID 3100 wrote to memory of 4480 3100 EXCEL.EXE 70 PID 3100 wrote to memory of 4480 3100 EXCEL.EXE 70 PID 3100 wrote to memory of 3796 3100 EXCEL.EXE 71 PID 3100 wrote to memory of 3796 3100 EXCEL.EXE 71
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\a17257a4a1a71d882ccfd9037e726639b49a70bde211c5dc647492f26d27c430.xls"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:3100 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4248
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4780
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4480
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx2⤵
- Process spawned unexpected child process
PID:3796
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