neshta | 2863d59554f71daaca458ebf5f9d290771630f3945b54bef7a5cdc91ed963b6e

General

Target

WndowsHealthSecurityUpdate.exe
Size

856KB
MD5

5ac3d3497a4f79a3117c4e5b9db33ed1
SHA1

c158c51009630fbfe942a4e37a791e4cb841dadf
SHA256

2863d59554f71daaca458ebf5f9d290771630f3945b54bef7a5cdc91ed963b6e
SHA512

7be6ace465afbfc08e9a18b9bd8e75f14cc5e359e061748830ab4a29cc5816e3c73fbfa6baee440e7ee73887c4f3200f37a07564318e30bbbab4d452adc2edfa

Score

10^/10

neshta persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 7 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1932-68-0x0000000000400000-0x000000000042B000-memory.dmp	family_neshta
behavioral1/memory/1932-69-0x00000000004080E4-mapping.dmp	family_neshta
behavioral1/memory/1932-72-0x0000000000400000-0x000000000042B000-memory.dmp	family_neshta
behavioral1/memory/1932-70-0x0000000000400000-0x000000000042B000-memory.dmp	family_neshta
behavioral1/memory/1932-73-0x0000000000400000-0x000000000042B000-memory.dmp	family_neshta
behavioral1/memory/1932-75-0x0000000000400000-0x000000000042B000-memory.dmp	family_neshta
behavioral1/memory/1932-76-0x0000000000400000-0x000000000042B000-memory.dmp	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

WndowsHealthSecurityUpdate.exe

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

Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
Loads dropped DLL 1 IoCs

Processes:

WndowsHealthSecurityUpdate.exe

pid process

1932 WndowsHealthSecurityUpdate.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Suspicious use of SetThreadContext 1 IoCs

Processes:

WndowsHealthSecurityUpdate.exe

description pid process target process

PID 604 set thread context of 1932 604 WndowsHealthSecurityUpdate.exe WndowsHealthSecurityUpdate.exe

pid	process
1932	WndowsHealthSecurityUpdate.exe

description	pid	process	target process
PID 604 set thread context of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe

Drops file in Program Files directory 64 IoCs

Processes:

WndowsHealthSecurityUpdate.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WI4223~1\sidebar.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~4.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~3.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOF5E2~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\WinMail.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	WndowsHealthSecurityUpdate.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	WndowsHealthSecurityUpdate.exe

Drops file in Windows directory 1 IoCs

Processes:

WndowsHealthSecurityUpdate.exe

description ioc process

File opened for modification C:\Windows\svchost.com WndowsHealthSecurityUpdate.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Windows\svchost.com	WndowsHealthSecurityUpdate.exe

Modifies registry class 1 IoCs

Processes:

WndowsHealthSecurityUpdate.exe

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

WndowsHealthSecurityUpdate.exe

pid process

604 WndowsHealthSecurityUpdate.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WndowsHealthSecurityUpdate.exe

description pid process

Token: SeDebugPrivilege 604 WndowsHealthSecurityUpdate.exe

pid	process
604	WndowsHealthSecurityUpdate.exe

description	pid	process
Token: SeDebugPrivilege	604	WndowsHealthSecurityUpdate.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

WndowsHealthSecurityUpdate.exe

C:\Users\Admin\AppData\Local\Temp\WndowsHealthSecurityUpdate.exe
"C:\Users\Admin\AppData\Local\Temp\WndowsHealthSecurityUpdate.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:604
- C:\Users\Admin\AppData\Local\Temp\WndowsHealthSecurityUpdate.exe
  "{path}"
  2⤵
  PID:1960
- C:\Users\Admin\AppData\Local\Temp\WndowsHealthSecurityUpdate.exe
  "{path}"
  2⤵
  - Modifies system executable filetype association
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Modifies registry class
  PID:1932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
memory/604-54-0x0000000000180000-0x000000000025C000-memory.dmp

Filesize
880KB

Download
memory/604-55-0x0000000076AE1000-0x0000000076AE3000-memory.dmp

Filesize
8KB

Download
memory/604-56-0x0000000000440000-0x000000000044A000-memory.dmp

Filesize
40KB

Download
memory/604-57-0x0000000004DD0000-0x0000000004E62000-memory.dmp

Filesize
584KB

Download
memory/604-58-0x0000000004E60000-0x0000000004EB4000-memory.dmp

Filesize
336KB

Download
memory/1932-60-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-69-0x00000000004080E4-mapping.dmp

Download
memory/1932-65-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-63-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-64-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-59-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-68-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-66-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-72-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-70-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-73-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-62-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-75-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1932-76-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download

description	pid	process	target process
PID 604 wrote to memory of 1960	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1960	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1960	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1960	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1960	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1960	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1960	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe
PID 604 wrote to memory of 1932	604	WndowsHealthSecurityUpdate.exe	WndowsHealthSecurityUpdate.exe

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads