Analysis
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max time kernel
149s -
max time network
146s -
platform
windows10_x64 -
resource
win10-20220414-en -
submitted
07-07-2022 04:18
Behavioral task
behavioral1
Sample
6462cf79fab9ce3950b20343a8f6da24f6afc14923fd194b01b5dc1ac45f36cd.xls
Resource
win10-20220414-en
General
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Target
6462cf79fab9ce3950b20343a8f6da24f6afc14923fd194b01b5dc1ac45f36cd.xls
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Size
95KB
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MD5
b9c632169734e906a67e48b6b4459ec4
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SHA1
9bd0a142a59acfe22d21e82c09d74f35e39cbec9
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SHA256
6462cf79fab9ce3950b20343a8f6da24f6afc14923fd194b01b5dc1ac45f36cd
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SHA512
3533fabb1af7aaebbfcecb9c66c287079c29ebedbb582399365e512e6526dcfe93ad77dc8466bd288a6b84ca2ff40bfead6f0742cf7007ce92cf64c8b37bb877
Malware Config
Extracted
https://edoraseguros.com.br/cgi-bin/jQNq9wlH1GXU/
http://earthmach.co.za/libraries/tWkZh9YrXbTd6IeX/
http://finvest.rs/wp-admin/Hr9nVNTIHgw59S/
http://efverstedt.se/5jjaV/w7fLEHJ20xn0qD/
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.
Processes:
regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4996 2664 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 5072 2664 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 5096 2664 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4608 2664 regsvr32.exe EXCEL.EXE -
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 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
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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2664 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE 2664 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 2664 wrote to memory of 4996 2664 EXCEL.EXE regsvr32.exe PID 2664 wrote to memory of 4996 2664 EXCEL.EXE regsvr32.exe PID 2664 wrote to memory of 5072 2664 EXCEL.EXE regsvr32.exe PID 2664 wrote to memory of 5072 2664 EXCEL.EXE regsvr32.exe PID 2664 wrote to memory of 5096 2664 EXCEL.EXE regsvr32.exe PID 2664 wrote to memory of 5096 2664 EXCEL.EXE regsvr32.exe PID 2664 wrote to memory of 4608 2664 EXCEL.EXE regsvr32.exe PID 2664 wrote to memory of 4608 2664 EXCEL.EXE regsvr32.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\6462cf79fab9ce3950b20343a8f6da24f6afc14923fd194b01b5dc1ac45f36cd.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci1.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci2.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci3.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci4.ocx2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/2664-118-0x00007FFD9FAC0000-0x00007FFD9FAD0000-memory.dmpFilesize
64KB
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memory/2664-119-0x00007FFD9FAC0000-0x00007FFD9FAD0000-memory.dmpFilesize
64KB
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memory/2664-120-0x00007FFD9FAC0000-0x00007FFD9FAD0000-memory.dmpFilesize
64KB
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memory/2664-121-0x00007FFD9FAC0000-0x00007FFD9FAD0000-memory.dmpFilesize
64KB
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memory/2664-130-0x00007FFD9C190000-0x00007FFD9C1A0000-memory.dmpFilesize
64KB
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memory/2664-131-0x00007FFD9C190000-0x00007FFD9C1A0000-memory.dmpFilesize
64KB
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memory/4608-263-0x0000000000000000-mapping.dmp
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memory/4996-260-0x0000000000000000-mapping.dmp
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memory/5072-261-0x0000000000000000-mapping.dmp
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memory/5096-262-0x0000000000000000-mapping.dmp