neshta | 0978712dbec1d91834dea2ca5f5e2115f32ab576ac57d40ff0a1ea337fecdae9

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-12-2024 20:51

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General

Target

massexe/winpcap-4.13.exe
Size

464KB
MD5

ce5cf0bb6b5d6da269289007b17652e3
SHA1

9d81fd8d4b20dc7d68e6783ff872ff577dbebd2c
SHA256

4ac6a84eda7b4b474f00118733da6e7f33c35f009a554a6f78d4464cb7101192
SHA512

c503821a71ef2e4861d6009fa48a1b69ff88e8bfc6ff2244f652e2dca60004c80e4cc6b1cb22f67ccd43a26dc037d1c7fcce1ff031ecc16820dbc96675857d77
SSDEEP

6144:k9X3dmkMIdQQkpxYLcP+k471Xr4bjMxiW+D/xqfF3o2KCzDunki8m/VlidXTj2EF:W34kDdc8L4bQA5qt3CxnkLwlQFPcOLsk

Score

10^/10

neshta discovery persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 4 IoCs

resource	yara_rule
behavioral10/files/0x0006000000020228-24.dat	family_neshta
behavioral10/memory/3276-120-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral10/memory/3276-170-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral10/memory/3276-172-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
Neshta family
neshta

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\npf.sys	winpcap-4.13.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	winpcap-4.13.exe

Executes dropped EXE 1 IoCs

pid	Process
3628	winpcap-4.13.exe

Loads dropped DLL 5 IoCs

pid	Process
3628	winpcap-4.13.exe
3628	winpcap-4.13.exe
3628	winpcap-4.13.exe
3628	winpcap-4.13.exe
3628	winpcap-4.13.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	winpcap-4.13.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\pthreadVC.dll	winpcap-4.13.exe
File created	C:\Windows\SysWOW64\wpcap.dll	winpcap-4.13.exe
File created	C:\Windows\SysWOW64\Packet.dll	winpcap-4.13.exe
File created	C:\Windows\system32\wpcap.dll	winpcap-4.13.exe
File created	C:\Windows\system32\Packet.dll	winpcap-4.13.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\INSTAL~1\setup.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\BHO\IE_TO_~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{D87AE~1\WINDOW~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmprph.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{63880~1\WINDOW~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\java.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\PWAHEL~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MID1AD~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOF5E2~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\NOTIFI~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmlaunch.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	winpcap-4.13.exe
File created	C:\Program Files\WinPcap\LICENSE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~4.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF5AF~1\WINDOW~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~2.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaw.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MI9C33~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	winpcap-4.13.exe
File created	C:\Program Files\WinPcap\uninstall.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE	winpcap-4.13.exe
File created	C:\Program Files\WinPcap\rpcapd.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaws.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GO664E~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~4.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~3.EXE	winpcap-4.13.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	winpcap-4.13.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	winpcap-4.13.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winpcap-4.13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winpcap-4.13.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral10/files/0x000c000000023b68-4.dat	nsis_installer_1
behavioral10/files/0x000c000000023b68-4.dat	nsis_installer_2

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	winpcap-4.13.exe

Runs net.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3276 wrote to memory of 3628	3276	winpcap-4.13.exe	83
PID 3276 wrote to memory of 3628	3276	winpcap-4.13.exe	83
PID 3276 wrote to memory of 3628	3276	winpcap-4.13.exe	83
PID 3628 wrote to memory of 3664	3628	winpcap-4.13.exe	86
PID 3628 wrote to memory of 3664	3628	winpcap-4.13.exe	86
PID 3628 wrote to memory of 3664	3628	winpcap-4.13.exe	86
PID 3664 wrote to memory of 3912	3664	net.exe	88
PID 3664 wrote to memory of 3912	3664	net.exe	88
PID 3664 wrote to memory of 3912	3664	net.exe	88

C:\Users\Admin\AppData\Local\Temp\massexe\winpcap-4.13.exe
"C:\Users\Admin\AppData\Local\Temp\massexe\winpcap-4.13.exe"
1⤵
- Checks computer location settings
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3276
- C:\Users\Admin\AppData\Local\Temp\3582-490\winpcap-4.13.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\winpcap-4.13.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3628
- - C:\Windows\SysWOW64\net.exe
    net stop npf
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3664
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 stop npf
      4⤵
      System Location Discovery: System Language Discovery
      PID:3912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

Filesize
86KB

MD5
3b73078a714bf61d1c19ebc3afc0e454

SHA1
9abeabd74613a2f533e2244c9ee6f967188e4e7e

SHA256
ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

SHA512
75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\winpcap-4.13.exe

Filesize
423KB

MD5
ae26452c8b3d97ef2037521ac0dd3a8b

SHA1
3ad99ec2bf6cc4f947bb09be627c91f82a898aa8

SHA256
f28156a96be558dfb83a3d935223a127816ad124b94f92c499400c38078ad842

SHA512
f5012a9600542b46eca137f41d58d6a6d3071aa36ca2b4c0f0119639cdf051c0a0e597c674583c4ec5753f8368ca121282acbf084930d2b1f30671f2032448d9

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsu7958.tmp\InstallOptions.dll

Filesize
14KB

MD5
79327201915b7cf3ba0c5d1a143aa925

SHA1
185b6f5520b1c39d3e7d9d91ed099698fac46d92

SHA256
1edf8dc7b6ef67e7cf68f6b07f38be5b336b5e6b2d1d5500cdb3e121b8381394

SHA512
c51086b7e039c83abb727a33b7f1ccac4fa999373b0423ac4b253e87195a5515d29e98ea2ed64f30406a14db4bf94422d34e6c9db8fc80be5c4e3fc77fd0207e

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsu7958.tmp\System.dll

Filesize
10KB

MD5
5c22bbf6730572e50eed4108af6081df

SHA1
8a13196f4d47ee7de2e35509058db954db10c72a

SHA256
3198d832c222a9907d3d5822116c944fd1c6670a263b775212104a9ecf88beec

SHA512
264b194a50cb523f5758569d918b5f60cb2959c4d091ae6712efc95644700a7bc2bb440a22acdf2285b754691a9cc04633fcc7c5b354dae75c7260d6b27ebb18

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsu7958.tmp\nsExec.dll

Filesize
6KB

MD5
6d376db8c870c88759ab0fac0f91bde4

SHA1
c1df9264442c84858735550af99c1af55204dc31

SHA256
7994b5dbbd63253b8e11ee5d4aa34c61852d5f86a9c4a35ef421de2c26c80cd9

SHA512
ed37d2b97e44c5f2e3bb63dcae3b7eafff0a00ea6d315b6764b322d4dd68ec5d3f9c8a5b8e23cf585612c8b6fdd5bd6eb03e13237c445f990eca86a59579fd23

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsu7958.tmp\options.ini

Filesize
319B

MD5
9e7d5f869f26f7a3906804f92b247c36

SHA1
04aa384d2d9b89cd66f82137ff7f3dc07594424f

SHA256
78037d4b8feee17ae048abd11f718ab407d6be0032c494cef2badbe12dfd053f

SHA512
8f54e52a2d74ba3f22d7baa315181674f93f6579a0d04dd4f33ca11ba809fbffac74125adfcccc4c6a005841e6e5e811f34f880ab956c71855e78e50b458c247

Download Submit
memory/3276-120-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3276-170-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3276-172-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads