Analysis
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max time kernel
148s -
max time network
146s -
platform
windows10_x64 -
resource
win10-20220414-en -
submitted
07-07-2022 04:37
Behavioral task
behavioral1
Sample
41cffd4f695c960fbb2b3c5e133a70ce4e75980bf8c1abed897ad3e5d90c5413.xls
Resource
win10-20220414-en
Behavioral task
behavioral2
Sample
41cffd4f695c960fbb2b3c5e133a70ce4e75980bf8c1abed897ad3e5d90c5413.xls
Resource
win10-20220414-en
General
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Target
41cffd4f695c960fbb2b3c5e133a70ce4e75980bf8c1abed897ad3e5d90c5413.xls
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Size
95KB
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MD5
9f55f6cbe0093da445d7fbaf7e7957b4
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SHA1
2325172171c339d062daf9ecbda8dbad4ddaee68
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SHA256
41cffd4f695c960fbb2b3c5e133a70ce4e75980bf8c1abed897ad3e5d90c5413
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SHA512
069b7762afc1ee2e4206f8164b28d16dc691f093d51e34cc872d307ef0ea03c242efad6335e02a245aebe758e091e32808f4563ea2671ea3173b2d118df87079
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 3168 2636 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3512 2636 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4360 2636 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3152 2636 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 2636 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE 2636 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 2636 wrote to memory of 3168 2636 EXCEL.EXE regsvr32.exe PID 2636 wrote to memory of 3168 2636 EXCEL.EXE regsvr32.exe PID 2636 wrote to memory of 3512 2636 EXCEL.EXE regsvr32.exe PID 2636 wrote to memory of 3512 2636 EXCEL.EXE regsvr32.exe PID 2636 wrote to memory of 4360 2636 EXCEL.EXE regsvr32.exe PID 2636 wrote to memory of 4360 2636 EXCEL.EXE regsvr32.exe PID 2636 wrote to memory of 3152 2636 EXCEL.EXE regsvr32.exe PID 2636 wrote to memory of 3152 2636 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\41cffd4f695c960fbb2b3c5e133a70ce4e75980bf8c1abed897ad3e5d90c5413.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/2636-118-0x00007FFB5DFF0000-0x00007FFB5E000000-memory.dmpFilesize
64KB
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memory/2636-119-0x00007FFB5DFF0000-0x00007FFB5E000000-memory.dmpFilesize
64KB
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memory/2636-120-0x00007FFB5DFF0000-0x00007FFB5E000000-memory.dmpFilesize
64KB
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memory/2636-121-0x00007FFB5DFF0000-0x00007FFB5E000000-memory.dmpFilesize
64KB
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memory/2636-130-0x00007FFB5AC40000-0x00007FFB5AC50000-memory.dmpFilesize
64KB
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memory/2636-131-0x00007FFB5AC40000-0x00007FFB5AC50000-memory.dmpFilesize
64KB
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memory/3152-278-0x0000000000000000-mapping.dmp
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memory/3168-264-0x0000000000000000-mapping.dmp
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memory/3512-273-0x0000000000000000-mapping.dmp
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memory/4360-277-0x0000000000000000-mapping.dmp