Analysis
- max time kernel
149s - max time network
123s - platform
windows10_x64 - resource
win10-en-20210920 - submitted
07/10/2021, 11:55
Static task
static1
Behavioral task
behavioral1
Sample
RF Oferta_07102021.doc
Resource
win7v20210408
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
RF Oferta_07102021.doc
Resource
win10-en-20210920
0 signatures
0 seconds
General
- Target RF Oferta_07102021.doc
- Size 500KB
- Sample211007-n3f57aceej
- SHA256 1c9bbe414128de9b946727e8ac7fe2edf9c28731fabbc564dee935a97721d358
- MD5 c977721c2b6e22a4bb29bc723e88dc14
- SHA1 33e5d7488767291024cbf2581fbe360384c7d67a
- SHA512 93cc581978c4b35f743a6bcd7eb48efe590141be3d4f636e44b6a000332ccd4007745aa014806d3375f485a7db3ddf7630b2b24c71093eebeb890786c1603d3b
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process 4740 3704 FLTLDR.EXE 67 - 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 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE - Modifies registry class 10 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805\DisplayName = "OICE_16_974FA576_32C1D314_BC4" WINWORD.EXE Key created \Registry\User\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_bc4\Children WINWORD.EXE Key deleted \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_bc4\Children WINWORD.EXE Key deleted \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_bc4 WINWORD.EXE Key deleted \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805\Children WINWORD.EXE Key created \Registry\User\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805 WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805\Moniker = "oice_16_974fa576_32c1d314_bc4" WINWORD.EXE Key created \Registry\User\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805\Children WINWORD.EXE Key created \Registry\User\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_bc4 WINWORD.EXE Key deleted \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805 WINWORD.EXE - NTFS ADS 1 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Local\Temp\{4DB6386E-9748-495E-BC0A-C3A06997FCA0}\abdtfhghgeghDh.ScT:Zone.Identifier WINWORD.EXE - Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 3704 WINWORD.EXE 3704 WINWORD.EXE - Suspicious use of SetWindowsHookEx 10 IoCs
pid Process 3704 WINWORD.EXE 3704 WINWORD.EXE 3704 WINWORD.EXE 3704 WINWORD.EXE 3704 WINWORD.EXE 3704 WINWORD.EXE 3704 WINWORD.EXE 3704 WINWORD.EXE 3704 WINWORD.EXE 3704 WINWORD.EXE - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3704 wrote to memory of 4740 3704 WINWORD.EXE 71 PID 3704 wrote to memory of 4740 3704 WINWORD.EXE 71
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\RF Oferta_07102021.doc" /o ""1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3704 -
C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\FLTLDR.EXE"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\FLTLDR.EXE" C:\Program Files\Common Files\Microsoft Shared\GRPHFLT\PNG32.FLT2⤵
- Process spawned unexpected child process
PID:4740
-