neshta | 9f96931855f7a2b61a6ba1f0bb14bd3c088c0c2d3a51da28b517569b5c305a57

Analysis

max time kernel
423s
max time network
424s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-10-2024 19:55

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General

Target

putty.exe
Size

1.6MB
MD5

b15ed5517d17dc03b4391f34c81f9697
SHA1

cdf3c4713c01362b5cfaf9084fa4b1fcdacc2fbf
SHA256

9f96931855f7a2b61a6ba1f0bb14bd3c088c0c2d3a51da28b517569b5c305a57
SHA512

383a2197e0c59c8f8dee58e3b68e8bb4343b5c6c5a5039a9abc270d13262ebe003801aeadd792b3f62da8ca225e5776acd6ea0d14378a4b24a2d41b52d2150e8
SSDEEP

49152:p9tHfYoEaTSiz23THT3WSMpDgF/qB0Rj6KIeVSc/zuiXlL:d/LEQkF/qBk6K2c/iiXV

Score

10^/10

neshta discovery persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x0006000000020253-15.dat	family_neshta
behavioral1/memory/844-95-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/844-96-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/844-98-0x0000000000400000-0x000000000041B000-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

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

Processes:

putty.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	putty.exe

Executes dropped EXE 1 IoCs

Processes:

putty.exe

pid	Process
1420	putty.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

Processes:

putty.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	putty.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 64 IoCs

Processes:

putty.exe

description	ioc	Process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\PWAHEL~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MID1AD~1.EXE	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF5AF~1\WINDOW~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~4.EXE	putty.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{D87AE~1\WINDOW~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\msedge.exe	putty.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaws.exe	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\NOTIFI~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~4.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MIA062~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOF5E2~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~2.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\COOKIE~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\MSEDGE~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{63880~1\WINDOW~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~3.EXE	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmprph.exe	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~3.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOBD5D~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\BHO\IE_TO_~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MI9C33~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	putty.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	putty.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~2.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\PWAHEL~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmlaunch.exe	putty.exe

Drops file in Windows directory 1 IoCs

Processes:

putty.exe

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	putty.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 1 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:

putty.exe

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

Modifies registry class 1 IoCs

Processes:

putty.exe

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

putty.exe

pid	Process
1420	putty.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

putty.exe

description	pid	Process	procid_target
PID 844 wrote to memory of 1420	844	putty.exe	84
PID 844 wrote to memory of 1420	844	putty.exe	84

C:\Users\Admin\AppData\Local\Temp\putty.exe
"C:\Users\Admin\AppData\Local\Temp\putty.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:844
- C:\Users\Admin\AppData\Local\Temp\3582-490\putty.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\putty.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  PID:1420

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\putty.exe

Filesize
1.6MB

MD5
5efef6cc9cd24baeeed71c1107fc32df

SHA1
3cfc9764083154f682a38831c8229e3e29cbe3ef

SHA256
e61b8f44ab92cf0f9cb1101347967d31e1839979142a4114a7dd02aa237ba021

SHA512
cecd98f0e238d7387b44838251b795bb95e85ec8d35242fc24532ba21929759685205133923268bf8bc0e2ded37db7d88ecbe2b692d2be6f09c6d92a57d1fdac

Download Submit
memory/844-95-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/844-96-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/844-98-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download