neshta | 164eed30da0e82bcd633c4942b1496175c2e223e0addb7f4b980af6b3c2c207c

Analysis

max time kernel
300s
max time network
302s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
23-01-2025 00:27

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General

Target

fasy333.exe
Size

5.2MB
MD5

3b4bbdec0ff22e4eb97d988377da9397
SHA1

7509983497f64b102ef4a58aeb461697e2e776af
SHA256

164eed30da0e82bcd633c4942b1496175c2e223e0addb7f4b980af6b3c2c207c
SHA512

67e0794227bbc1b425b42e1f5e8478cab7d5941139f0d234f0d1712f4f150901044e0fd1b42f4b3d113992e8f73195285099762d113281800f147e5fd1373679
SSDEEP

98304:xQfqgXTHx+fcztondv+AyHi7QKCUGF542lpAVx6kfXe+sXx3IaLQ:xQXhztUqH0J/WrlpIx6AXDsXyaLQ

Score

10^/10

neshta discovery execution persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 4 IoCs

resource	yara_rule
behavioral4/files/0x000700000002782a-20.dat	family_neshta
behavioral4/memory/2764-156-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral4/memory/2764-157-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral4/memory/2764-159-0x0000000000400000-0x000000000041B000-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 startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anydesk.exe.exe	Powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anydesk.exe.exe	Powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2936	fasy333.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\" %*"	fasy333.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 SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2936 set thread context of 4940	2936	fasy333.exe	81

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\pwahelper.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdate.exe	fasy333.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{D87AE~1\WINDOW~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateBroker.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmprph.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateSetup.exe	fasy333.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\cookie_exporter.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\notification_helper.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\msedge_proxy.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\msedge_pwa_launcher.exe	fasy333.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF5AF~1\WINDOW~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\msedge.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\msedge_proxy.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	fasy333.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~2.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeComRegisterShellARM64.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\java.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~3.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\pwahelper.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaw.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateCore.exe	fasy333.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{63880~1\WINDOW~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\msedge.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\msedgewebview2.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateComRegisterShell64.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateOnDemand.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	fasy333.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\Installer\setup.exe	fasy333.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	fasy333.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GO664E~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOF5E2~1.EXE	fasy333.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\Application\90.0.818.66\identity_helper.exe	fasy333.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	fasy333.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3996	Powershell.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2508	4940	WerFault.exe	81

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	fasy333.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fasy333.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	fasy333.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3996	Powershell.exe
3996	Powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3996	Powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 2936	2764	fasy333.exe	78
PID 2764 wrote to memory of 2936	2764	fasy333.exe	78
PID 2764 wrote to memory of 2936	2764	fasy333.exe	78
PID 2936 wrote to memory of 3996	2936	fasy333.exe	79
PID 2936 wrote to memory of 3996	2936	fasy333.exe	79
PID 2936 wrote to memory of 3996	2936	fasy333.exe	79
PID 2936 wrote to memory of 4940	2936	fasy333.exe	81
PID 2936 wrote to memory of 4940	2936	fasy333.exe	81
PID 2936 wrote to memory of 4940	2936	fasy333.exe	81
PID 2936 wrote to memory of 4940	2936	fasy333.exe	81
PID 2936 wrote to memory of 4940	2936	fasy333.exe	81
PID 2936 wrote to memory of 4940	2936	fasy333.exe	81
PID 2936 wrote to memory of 4940	2936	fasy333.exe	81
PID 2936 wrote to memory of 4940	2936	fasy333.exe	81

C:\Users\Admin\AppData\Local\Temp\fasy333.exe
"C:\Users\Admin\AppData\Local\Temp\fasy333.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:2764
- C:\Users\Admin\AppData\Local\Temp\3582-490\fasy333.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\fasy333.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2936
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
    "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\3582-490\fasy333.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\anydesk.exe.exe'
    3⤵
    - Drops startup file
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3996
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4940
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4940 -s 880
      4⤵
      Program crash
      PID:2508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4940 -ip 4940
1⤵
PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

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

Replay Monitor

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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\fasy333.exe

Filesize
5.2MB

MD5
d1f2d79b8371d265f235e3d7cfa2989a

SHA1
708e10a2b8cb505b678da9c089bec92a35a0fdf2

SHA256
d6f48704eaf98408102ce49e22481376b0595a3cc3e13085654f44d32034ffa1

SHA512
130c43770c19defb8740623133e547367bfe4caabc343b36dc288b910460f20d58090a4d0b936d1cddfdee3b85ae50ea128d8ae12dba7ba78f0d10a5c752db7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5eratuk2.oh0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2764-156-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2764-157-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2764-159-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2936-14-0x00000000063F0000-0x0000000006996000-memory.dmp

Filesize
5.6MB

Download
memory/2936-122-0x0000000006060000-0x00000000060FC000-memory.dmp

Filesize
624KB

Download
memory/2936-16-0x00000000069A0000-0x0000000006EA4000-memory.dmp

Filesize
5.0MB

Download
memory/2936-123-0x0000000073320000-0x0000000073AD1000-memory.dmp

Filesize
7.7MB

Download
memory/2936-15-0x0000000005D70000-0x0000000005E02000-memory.dmp

Filesize
584KB

Download
memory/2936-13-0x0000000000D90000-0x00000000012CA000-memory.dmp

Filesize
5.2MB

Download
memory/2936-146-0x0000000073320000-0x0000000073AD1000-memory.dmp

Filesize
7.7MB

Download
memory/2936-142-0x0000000005E20000-0x0000000005E2A000-memory.dmp

Filesize
40KB

Download
memory/2936-12-0x000000007332E000-0x000000007332F000-memory.dmp

Filesize
4KB

Download
memory/3996-136-0x0000000005B80000-0x0000000005ED7000-memory.dmp

Filesize
3.3MB

Download
memory/3996-149-0x00000000070F0000-0x0000000007186000-memory.dmp

Filesize
600KB

Download
memory/3996-128-0x00000000052B0000-0x0000000005316000-memory.dmp

Filesize
408KB

Download
memory/3996-140-0x0000000073320000-0x0000000073AD1000-memory.dmp

Filesize
7.7MB

Download
memory/3996-141-0x00000000060A0000-0x00000000060BE000-memory.dmp

Filesize
120KB

Download
memory/3996-129-0x0000000005A50000-0x0000000005AB6000-memory.dmp

Filesize
408KB

Download
memory/3996-143-0x0000000006460000-0x00000000064AC000-memory.dmp

Filesize
304KB

Download
memory/3996-124-0x00000000028B0000-0x00000000028E6000-memory.dmp

Filesize
216KB

Download
memory/3996-127-0x0000000005210000-0x0000000005232000-memory.dmp

Filesize
136KB

Download
memory/3996-125-0x0000000005320000-0x000000000594A000-memory.dmp

Filesize
6.2MB

Download
memory/3996-126-0x0000000073320000-0x0000000073AD1000-memory.dmp

Filesize
7.7MB

Download
memory/3996-150-0x0000000006580000-0x000000000659A000-memory.dmp

Filesize
104KB

Download
memory/3996-151-0x0000000006610000-0x0000000006632000-memory.dmp

Filesize
136KB

Download
memory/3996-130-0x0000000073320000-0x0000000073AD1000-memory.dmp

Filesize
7.7MB

Download
memory/3996-155-0x0000000073320000-0x0000000073AD1000-memory.dmp

Filesize
7.7MB

Download
memory/4940-148-0x0000000005450000-0x0000000005458000-memory.dmp

Filesize
32KB

Download
memory/4940-147-0x0000000005440000-0x000000000544E000-memory.dmp

Filesize
56KB

Download
memory/4940-144-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download