Analysis
- max time kernel
146s - max time network
152s - platform
windows10_x64 - resource
win10v20210410 - submitted
08/07/2021, 04:22
Static task
static1
Behavioral task
behavioral1
Sample
dri.xlsb
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
dri.xlsb
Resource
win10v20210410
windows10_x64
0 signatures
0 seconds
General
- Target dri.xlsb
- Size 425KB
- Sample210708-769cea4bk6
- SHA256 a01feb0cc0f71ea4c1d55fff2a54a3ab5f2ad4b8d1aa1b93de814b7e6b31fc99
- MD5 1d23f3324bed375df4da3ec19ce76c6b
- SHA1 9240d21ab6150f8b0dc8ee0c0caad607abc866b6
- SHA512 f56c71cbfc6d58db8e44b57d8da43d91d8d55448126f254066205b5538b492c90a49fe62ea93fbc119f712e53aa7704fdf2c6a6cc9c116e4bd32d9555907c836
- MD5 SHA1 SHA512
Score
8/10
Malware Config
Signatures
- Blocklisted process makes network request 15 IoCs
flow pid Process 33 1824 WMIC.exe 35 1824 WMIC.exe 37 1824 WMIC.exe 39 1824 WMIC.exe 41 1824 WMIC.exe 43 1824 WMIC.exe 45 1824 WMIC.exe 47 1824 WMIC.exe 49 1824 WMIC.exe 51 1824 WMIC.exe 53 1824 WMIC.exe 55 1824 WMIC.exe 57 1824 WMIC.exe 60 1824 WMIC.exe 62 1824 WMIC.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- 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 - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE -
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 WMIC.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 WMIC.exe - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4068 EXCEL.EXE - Suspicious use of AdjustPrivilegeToken 42 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1824 WMIC.exe Token: SeSecurityPrivilege 1824 WMIC.exe Token: SeTakeOwnershipPrivilege 1824 WMIC.exe Token: SeLoadDriverPrivilege 1824 WMIC.exe Token: SeSystemProfilePrivilege 1824 WMIC.exe Token: SeSystemtimePrivilege 1824 WMIC.exe Token: SeProfSingleProcessPrivilege 1824 WMIC.exe Token: SeIncBasePriorityPrivilege 1824 WMIC.exe Token: SeCreatePagefilePrivilege 1824 WMIC.exe Token: SeBackupPrivilege 1824 WMIC.exe Token: SeRestorePrivilege 1824 WMIC.exe Token: SeShutdownPrivilege 1824 WMIC.exe Token: SeDebugPrivilege 1824 WMIC.exe Token: SeSystemEnvironmentPrivilege 1824 WMIC.exe Token: SeRemoteShutdownPrivilege 1824 WMIC.exe Token: SeUndockPrivilege 1824 WMIC.exe Token: SeManageVolumePrivilege 1824 WMIC.exe Token: 33 1824 WMIC.exe Token: 34 1824 WMIC.exe Token: 35 1824 WMIC.exe Token: 36 1824 WMIC.exe Token: SeIncreaseQuotaPrivilege 1824 WMIC.exe Token: SeSecurityPrivilege 1824 WMIC.exe Token: SeTakeOwnershipPrivilege 1824 WMIC.exe Token: SeLoadDriverPrivilege 1824 WMIC.exe Token: SeSystemProfilePrivilege 1824 WMIC.exe Token: SeSystemtimePrivilege 1824 WMIC.exe Token: SeProfSingleProcessPrivilege 1824 WMIC.exe Token: SeIncBasePriorityPrivilege 1824 WMIC.exe Token: SeCreatePagefilePrivilege 1824 WMIC.exe Token: SeBackupPrivilege 1824 WMIC.exe Token: SeRestorePrivilege 1824 WMIC.exe Token: SeShutdownPrivilege 1824 WMIC.exe Token: SeDebugPrivilege 1824 WMIC.exe Token: SeSystemEnvironmentPrivilege 1824 WMIC.exe Token: SeRemoteShutdownPrivilege 1824 WMIC.exe Token: SeUndockPrivilege 1824 WMIC.exe Token: SeManageVolumePrivilege 1824 WMIC.exe Token: 33 1824 WMIC.exe Token: 34 1824 WMIC.exe Token: 35 1824 WMIC.exe Token: 36 1824 WMIC.exe - Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE 4068 EXCEL.EXE - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4068 wrote to memory of 2080 4068 EXCEL.EXE 75 PID 4068 wrote to memory of 2080 4068 EXCEL.EXE 75 PID 744 wrote to memory of 1824 744 mshta.EXE 82 PID 744 wrote to memory of 1824 744 mshta.EXE 82
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\dri.xlsb"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4068 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:2080
-
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\??\c:\windows\system32\mshta.EXEc:\windows\system32\mshta.EXE vbscript:Execute("set osh = CreateObject(""Wscript.Shell""):osh.Run(""wmic os get /format:"" & Chr(34) & osh.ExpandEnvironmentStrings(""C:\ProgramData"") & ""\\xScenario.xsl"" & Chr(34)),0:close")1⤵
- Suspicious use of WriteProcessMemory
PID:744 -
C:\Windows\System32\wbem\WMIC.exe"C:\Windows\System32\wbem\WMIC.exe" os get /format:"C:\ProgramData\\xScenario.xsl"2⤵
- Blocklisted process makes network request
- Modifies system certificate store
- Suspicious use of AdjustPrivilegeToken
PID:1824
-