neshta | 9f96931855f7a2b61a6ba1f0bb14bd3c088c0c2d3a51da28b517569b5c305a57

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14/10/2024, 20:08

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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 3 IoCs

resource	yara_rule
behavioral1/files/0x0001000000010314-12.dat	family_neshta
behavioral1/memory/2616-86-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/2616-88-0x0000000000400000-0x000000000041B000-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 2 IoCs

pid	Process
1444	putty.exe
1268	Process not Found

Loads dropped DLL 3 IoCs

pid	Process
2616	putty.exe
2616	putty.exe
2616	putty.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\" %*"	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

description	ioc	Process
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\misc.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\Google\Update\1336~1.151\GOOGLE~4.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\SELFCERT.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~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	putty.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	putty.exe
File opened for modification	C:\PROGRA~2\WI4223~1\sidebar.exe	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	putty.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.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\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.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~2\MICROS~1\Office14\GROOVEMN.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.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~2\Adobe\READER~1.0\Reader\AcroRd32.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\Google\Update\1336~1.151\GOOGLE~3.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe	putty.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	putty.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE	putty.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	putty.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\OIS.EXE	putty.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	putty.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	putty.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE	putty.exe

Drops file in Windows directory 1 IoCs

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

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

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1444	putty.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 1444	2616	putty.exe	30
PID 2616 wrote to memory of 1444	2616	putty.exe	30
PID 2616 wrote to memory of 1444	2616	putty.exe	30
PID 2616 wrote to memory of 1444	2616	putty.exe	30

C:\Users\Admin\AppData\Local\Temp\putty.exe
"C:\Users\Admin\AppData\Local\Temp\putty.exe"
1⤵
- Loads dropped DLL
- 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:2616
- 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:1444

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

Replay Monitor

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Downloads

C:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

Filesize
547KB

MD5
cf6c595d3e5e9667667af096762fd9c4

SHA1
9bb44da8d7f6457099cb56e4f7d1026963dce7ce

SHA256
593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

SHA512
ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

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
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
memory/2616-86-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2616-88-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads