neshta | b3c4140104b09723a786c120c921b9e46d7b50be5fb0bd4afa7bbb23069948de

Analysis

max time kernel
50s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
08-11-2024 04:59

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General

Target

NL Brute.exe
Size

7.8MB
MD5

aa7a175b442aa64c84fb306979a4320b
SHA1

a7cd106acbc7675337977f55387b92145190eb1c
SHA256

b3c4140104b09723a786c120c921b9e46d7b50be5fb0bd4afa7bbb23069948de
SHA512

bab9d021d7d1efb24298cb66f29d1d2b716a8ea24e44891cc01a1a3249cf32bfdf1688cac70e33f336c2e70b967ae3e22f3855c9dafdeb2d1f67e6e98adb4295
SSDEEP

196608:CfP0p8Y4DFbBJ5dIa82Vou2j09a3XAydVdODHMD16UAsdf6:CO8YwFV/dIa8wp2j09qXAyYDHMDYrsdi

Score

10^/10

neshta discovery evasion persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 4 IoCs

Processes:

resource	yara_rule
behavioral4/files/0x000700000002782d-19.dat	family_neshta
behavioral4/memory/2892-128-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral4/memory/2892-132-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral4/memory/2892-134-0x0000000000400000-0x000000000041B000-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

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

NL Brute.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	NL Brute.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

NL Brute.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	NL Brute.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	NL Brute.exe

Executes dropped EXE 1 IoCs

Processes:

NL Brute.exe

pid	Process
3508	NL Brute.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

NL Brute.exe

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4018527317-446799424-2810249686-1000\Software\Wine	NL Brute.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

Processes:

NL Brute.exe

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

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

NL Brute.exe

pid	Process
3508	NL Brute.exe

Drops file in Program Files directory 64 IoCs

Processes:

NL Brute.exe

description	ioc	Process
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\msedge_proxy.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateBroker.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\cookie_exporter.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\msedge.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateOnDemand.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	NL Brute.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{63880~1\WINDOW~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaw.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\msedge_proxy.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\BHO\ie_to_edge_stub.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\elevation_service.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\msedgewebview2.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaws.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\pwahelper.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\msedge.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~4.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\msedge_pwa_launcher.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeComRegisterShellARM64.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateSetup.exe	NL Brute.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\identity_helper.exe	NL Brute.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\Installer\setup.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~3.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~2.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOF5E2~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateComRegisterShell64.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmprph.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	NL Brute.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	NL Brute.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF5AF~1\WINDOW~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\notification_helper.exe	NL Brute.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	NL Brute.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdate.exe	NL Brute.exe

Drops file in Windows directory 1 IoCs

Processes:

NL Brute.exe

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	NL Brute.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 2 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

Processes:

NL Brute.exeNL Brute.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NL Brute.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NL Brute.exe

Modifies registry class 1 IoCs

Processes:

NL Brute.exe

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

NL Brute.exe

pid	Process
3508	NL Brute.exe
3508	NL Brute.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

NL Brute.exe

pid	Process
3508	NL Brute.exe
3508	NL Brute.exe

Suspicious use of SendNotifyMessage 2 IoCs

Processes:

NL Brute.exe

pid	Process
3508	NL Brute.exe
3508	NL Brute.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

NL Brute.exe

pid	Process
3508	NL Brute.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

NL Brute.exe

description	pid	Process	procid_target
PID 2892 wrote to memory of 3508	2892	NL Brute.exe	77
PID 2892 wrote to memory of 3508	2892	NL Brute.exe	77
PID 2892 wrote to memory of 3508	2892	NL Brute.exe	77

C:\Users\Admin\AppData\Local\Temp\NL Brute.exe
"C:\Users\Admin\AppData\Local\Temp\NL Brute.exe"
1⤵
- 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:2892
- C:\Users\Admin\AppData\Local\Temp\3582-490\NL Brute.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\NL Brute.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:3508

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

Virtualization/Sandbox Evasion

T1497

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

Virtualization/Sandbox Evasion

T1497

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\NL Brute.exe

Filesize
7.8MB

MD5
025c1c35c3198e6e3497d5dbf97ae81f

SHA1
6d390038003c298c7ab8f2cbe35a50b07e096554

SHA256
ffa28db79daca3b93a283ce2a6ff24791956a768cb5fc791c075b638416b51f4

SHA512
1d4cf52062b4f1aa9349ee96b234fc51e693ea8231230ec2b35fa896c2c27f47158d6493e26a1881b070b3f86e6c7d9d2ed3f5f161d456eb011551d434e06b50

Download Submit
memory/2892-134-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2892-132-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2892-128-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3508-124-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-13-0x0000000006040000-0x0000000006041000-memory.dmp

Filesize
4KB

Download
memory/3508-15-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-14-0x0000000000401000-0x000000000081B000-memory.dmp

Filesize
4.1MB

Download
memory/3508-30-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-56-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-112-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-12-0x0000000006050000-0x0000000006051000-memory.dmp

Filesize
4KB

Download
memory/3508-125-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-126-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-127-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-11-0x0000000006030000-0x0000000006031000-memory.dmp

Filesize
4KB

Download
memory/3508-129-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-130-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-131-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-10-0x0000000077536000-0x0000000077538000-memory.dmp

Filesize
8KB

Download
memory/3508-9-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-135-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-136-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-137-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download
memory/3508-138-0x0000000000400000-0x0000000001C9F400-memory.dmp

Filesize
24.6MB

Download