Analysis
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max time kernel
146s -
max time network
138s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
21-04-2021 21:34
Static task
static1
Behavioral task
behavioral1
Sample
Sales contract.doc
Resource
win7v20210410
Behavioral task
behavioral2
Sample
Sales contract.doc
Resource
win10v20210408
General
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Target
Sales contract.doc
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Size
295KB
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MD5
452e11d23c80550a45b6a498bac85733
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SHA1
1b1355594eecbfad9803e771bedefedf96ecceee
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SHA256
8ac32b7faa79aabd51156f6503e624a53ee5d355d602784273376ad45e7dbdbf
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SHA512
fcf7955fe9b6e84e6361a2e0beca3bce9a64d7f413c8629a877e37da016144c4c886ecbf0d61586233aecb15f9215ac0378fc5349ed127465904658af1a3f3a5
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:
FLTLDR.EXEdescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process 3916 4024 FLTLDR.EXE WINWORD.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
WINWORD.EXEdescription 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
Processes:
WINWORD.EXEdescription 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
Processes:
WINWORD.EXEdescription ioc process Key created \Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-282742181-3200262234-3690697834-4004987637-116961601-1768771952-2325363190\Children WINWORD.EXE Key created \Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_32de WINWORD.EXE Key created \Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_32de\Children WINWORD.EXE Key deleted \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_32de WINWORD.EXE Key deleted \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_CLASSES\LOCAL SETTINGS\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\APPCONTAINER\MAPPINGS\S-1-15-2-282742181-3200262234-3690697834-4004987637-116961601-1768771952-2325363190\CHILDREN WINWORD.EXE Key created \Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-282742181-3200262234-3690697834-4004987637-116961601-1768771952-2325363190 WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-282742181-3200262234-3690697834-4004987637-116961601-1768771952-2325363190\DisplayName = "OICE_16_974FA576_32C1D314_32DE" WINWORD.EXE Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-282742181-3200262234-3690697834-4004987637-116961601-1768771952-2325363190\Moniker = "oice_16_974fa576_32c1d314_32de" WINWORD.EXE Key deleted \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_CLASSES\LOCAL SETTINGS\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\APPCONTAINER\STORAGE\OICE_16_974FA576_32C1D314_32DE\CHILDREN WINWORD.EXE Key deleted \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-282742181-3200262234-3690697834-4004987637-116961601-1768771952-2325363190 WINWORD.EXE -
NTFS ADS 1 IoCs
Processes:
WINWORD.EXEdescription ioc process File opened for modification C:\Users\Admin\AppData\Local\Temp\{3A0FEC38-1BDE-49C3-8B3E-7B1D45AF5F18}\Abctfhghgdghgh‹.scT:Zone.Identifier WINWORD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
Processes:
WINWORD.EXEpid process 4024 WINWORD.EXE 4024 WINWORD.EXE -
Suspicious use of SetWindowsHookEx 10 IoCs
Processes:
WINWORD.EXEpid process 4024 WINWORD.EXE 4024 WINWORD.EXE 4024 WINWORD.EXE 4024 WINWORD.EXE 4024 WINWORD.EXE 4024 WINWORD.EXE 4024 WINWORD.EXE 4024 WINWORD.EXE 4024 WINWORD.EXE 4024 WINWORD.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
WINWORD.EXEdescription pid process target process PID 4024 wrote to memory of 3916 4024 WINWORD.EXE FLTLDR.EXE PID 4024 wrote to memory of 3916 4024 WINWORD.EXE FLTLDR.EXE
Processes
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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\Sales contract.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
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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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Packages\oice_16_974fa576_32c1d314_32de\AC\Temp\FL4EA2.tmpMD5
5d7107c6de79583221303fed8e4413fb
SHA17ce7da26774d7a23bfcaae9c5c823afe07171a6e
SHA2562286e41536454af093c89b12e71c3b24559ffea5de807cd5397aa6de168d8522
SHA512d16bdb7f3ad00617a171ffb364bd2012f84567af01ede4edf0f611fbd8ab040c9e0482f50a765422f138166897150a58eda1ad16a59eab59c20d1d3b97af5982
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memory/3916-179-0x0000000000000000-mapping.dmp
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memory/3916-181-0x00007FFA892C0000-0x00007FFA892D0000-memory.dmpFilesize
64KB
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memory/4024-114-0x00007FFA892C0000-0x00007FFA892D0000-memory.dmpFilesize
64KB
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memory/4024-115-0x00007FFA892C0000-0x00007FFA892D0000-memory.dmpFilesize
64KB
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memory/4024-116-0x00007FFA892C0000-0x00007FFA892D0000-memory.dmpFilesize
64KB
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memory/4024-117-0x00007FFA892C0000-0x00007FFA892D0000-memory.dmpFilesize
64KB
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memory/4024-119-0x00007FFA892C0000-0x00007FFA892D0000-memory.dmpFilesize
64KB
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memory/4024-118-0x00007FFAAA370000-0x00007FFAACE93000-memory.dmpFilesize
43.1MB
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memory/4024-122-0x00007FFAA4990000-0x00007FFAA5A7E000-memory.dmpFilesize
16.9MB
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memory/4024-123-0x00007FFAA2A90000-0x00007FFAA4985000-memory.dmpFilesize
31.0MB