neshta | 95ffadb2749e8aafb5d4d96a33ca7f1e62c20448b556f616ace2796fc60f1431

Analysis

max time kernel
17s
max time network
18s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
25-10-2024 02:56

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General

Target

legionstealer.exe
Size

4.5MB
MD5

3fb902d7bebd886d73671bbfad1f6aaa
SHA1

6acfbe5dadceb210f6fe2cee04589e10bc5efbc8
SHA256

95ffadb2749e8aafb5d4d96a33ca7f1e62c20448b556f616ace2796fc60f1431
SHA512

8cbbc2ba84977cb7689cb573988c3ce72203f03438178a1b05415c919a8345ee76352af1e8a13ebf16e7402ef19a6c0521b8fa55c845d9b8fb85688b9c5995e6
SSDEEP

98304:D0FPMJ2FPMJcaFPMJ9wT7DFPMJkhzHdV5RPdnASGuA+i1iK8Po:6gxV5Rm9uAmfw

Score

10^/10

neshta discovery persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x000a00000001604f-17.dat	family_neshta
behavioral1/memory/3780-77-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/3780-79-0x0000000000400000-0x000000000041B000-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

Executes dropped EXE 1 IoCs

Processes:

legionstealer.exe

pid	Process
3080	legionstealer.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

Processes:

legionstealer.exe

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

Drops file in Program Files directory 58 IoCs

Processes:

legionstealer.exe

description	ioc	Process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaw.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\java.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	legionstealer.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaws.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ACCESS~1\wordpad.exe	legionstealer.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	legionstealer.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	legionstealer.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\WinMail.exe	legionstealer.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	legionstealer.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	legionstealer.exe

Drops file in Windows directory 1 IoCs

Processes:

legionstealer.exe

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

legionstealer.exelegionstealer.exe

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

Modifies registry class 1 IoCs

Processes:

legionstealer.exe

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

legionstealer.exe

description	pid	Process
Token: SeDebugPrivilege	3080	legionstealer.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

legionstealer.exe

description	pid	Process	procid_target
PID 3780 wrote to memory of 3080	3780	legionstealer.exe	74
PID 3780 wrote to memory of 3080	3780	legionstealer.exe	74
PID 3780 wrote to memory of 3080	3780	legionstealer.exe	74

C:\Users\Admin\AppData\Local\Temp\legionstealer.exe
"C:\Users\Admin\AppData\Local\Temp\legionstealer.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:3780
- C:\Users\Admin\AppData\Local\Temp\3582-490\legionstealer.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\legionstealer.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3080

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

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\legionstealer.exe

Filesize
4.5MB

MD5
547bb91afa2e38b63bbc57f0adf8583f

SHA1
cc6c6cebc870f63a1a40a57d9b8ce3cbe8ce36a2

SHA256
8b336346ba44e4a6db56070eeffd741234f6557a213fd72bc0efa705930e7de2

SHA512
20a31dba79c4cb858891264f70f1a4cddde353e7d7bd8bb753b74551d2efdac8d65cb20635fcf56bb1b8df3bd0162dd449b63cc926152e61994593fd9a480863

Download Submit
memory/3080-13-0x0000000005EE0000-0x0000000005EF4000-memory.dmp

Filesize
80KB

Download
memory/3080-6-0x000000007340E000-0x000000007340F000-memory.dmp

Filesize
4KB

Download
memory/3080-9-0x0000000005B00000-0x0000000005B92000-memory.dmp

Filesize
584KB

Download
memory/3080-10-0x0000000073400000-0x0000000073AEE000-memory.dmp

Filesize
6.9MB

Download
memory/3080-11-0x0000000005BB0000-0x0000000005BBA000-memory.dmp

Filesize
40KB

Download
memory/3080-12-0x0000000005D70000-0x0000000005EBE000-memory.dmp

Filesize
1.3MB

Download
memory/3080-7-0x0000000000D40000-0x00000000011C4000-memory.dmp

Filesize
4.5MB

Download
memory/3080-8-0x0000000006000000-0x00000000064FE000-memory.dmp

Filesize
5.0MB

Download
memory/3080-53-0x0000000073400000-0x0000000073AEE000-memory.dmp

Filesize
6.9MB

Download
memory/3080-54-0x0000000014E70000-0x0000000014E82000-memory.dmp

Filesize
72KB

Download
memory/3080-55-0x0000000073400000-0x0000000073AEE000-memory.dmp

Filesize
6.9MB

Download
memory/3080-74-0x0000000015650000-0x000000001568E000-memory.dmp

Filesize
248KB

Download
memory/3080-76-0x0000000073400000-0x0000000073AEE000-memory.dmp

Filesize
6.9MB

Download
memory/3780-77-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3780-79-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download