Analysis
- max time kernel
70s - max time network
132s - platform
windows10_x64 - resource
win10v200430 - submitted
10/07/2020, 18:15
Static task
static1
Behavioral task
behavioral1
Sample
Form_798989.xls
Resource
win7
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Form_798989.xls
Resource
win10v200430
0 signatures
0 seconds
General
- Target Form_798989.xls
- Size 360KB
- Sample200710-ywc6nb1bfx
- SHA256 3f21a3f101abdbae7910472c0a7feaeaa0973eccd4a72c60a539e86a0c7e1929
- MD5 7253441f74b402e427115f84426f7089
- SHA1 1ceddd73cce540fa873398b9daebdb59ddffb3b4
- SHA512 ea550bab3c394546e109eaac39f1ec2dc872c49b412b7a6101c1888192f831639f680e6696a0da61b444d27281b9ecd54c25c6a597f434182de91f6046ca9ab7
- MD5 SHA1 SHA512
Score
6/10
Malware Config
Signatures
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2916 EXCEL.EXE - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2916 EXCEL.EXE 2916 EXCEL.EXE 2648 dwwin.exe 2648 dwwin.exe - Process spawned suspicious child process 1 IoCs
This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2444 2916 DW20.EXE 65 - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2916 wrote to memory of 2444 2916 EXCEL.EXE 70 PID 2916 wrote to memory of 2444 2916 EXCEL.EXE 70 PID 2444 wrote to memory of 2648 2444 DW20.EXE 71 PID 2444 wrote to memory of 2648 2444 DW20.EXE 71 - Enumerates system info in registry 2 TTPs 3 IoCs
description 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 - Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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 - Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 2916 EXCEL.EXE 2916 EXCEL.EXE 2916 EXCEL.EXE 2916 EXCEL.EXE 2916 EXCEL.EXE 2916 EXCEL.EXE 2916 EXCEL.EXE 2916 EXCEL.EXE
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Form_798989.xls"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Enumerates system info in registry
- Checks processor information in registry
- Suspicious use of SetWindowsHookEx
PID:2916 -
C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 45162⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:2444 -
C:\Windows\system32\dwwin.exeC:\Windows\system32\dwwin.exe -x -s 45163⤵
- Suspicious behavior: EnumeratesProcesses
PID:2648
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