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11-03-2023 15:23
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201012-xxyy2r88tj 10Analysis
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max time kernel
812s -
max time network
617s -
platform
windows10-1703_x64 -
resource
win10-20230220-en -
resource tags
arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system -
submitted
11-03-2023 15:23
Behavioral task
behavioral1
Sample
Fechas de pago programadas.xls
Resource
win10-20230220-en
General
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Target
Fechas de pago programadas.xls
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Size
91KB
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MD5
e98b2ac88a1f33a371175e24c189ef5e
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SHA1
bd9207d48d365c37466abd11c4e10af114632bad
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SHA256
d5a68a111c359a22965206e7ac7d602d92789dd1aa3f0e0c8d89412fc84e24a5
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SHA512
b116d252e667fbb3254ce17f2decfe0e938a9557a7162f3d8e4fe4cf55755fd11458c44608cf4623750f51dce4de86d5b8522bbbf581489585c83c6417edd3a3
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SSDEEP
1536:J5555qfeNEtlDWZNgng9sqm4xEtjPOtioVjDGUU1qfDlaGGx+cL2QnATySBCK5z4:A4xEtjPOtioVjDGUU1qfDlaGGx+cL2Qk
Malware Config
Signatures
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEdescription 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 -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 1172 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3552 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 3552 EXCEL.EXE 3552 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 16 IoCs
Processes:
EXCEL.EXEpid process 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE 3552 EXCEL.EXE
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\Fechas de pago programadas.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:3552
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:1672
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\JavaDeployReg.log1⤵
- Opens file in notepad (likely ransom note)
PID:1172
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
541B
MD5ab1fd7792571fd3477a41aa9b7afe6c4
SHA1c1d586c0c45a77fec9d6b6091fe59c7bb9739953
SHA25624f08da80edcf5eb8645ba80df552f607df93b2c90ec14de03f62af208c490b5
SHA512eb058bf6645c6f62828c1369c489c5181072f38c811950aaf1f592104ad0897faa360db0269073a297e4012f532ffdb66ef5f4b9603b03e494af636478dba1d2