neshta | de8f674e914b11d418860730c0297cd0a0ea44aa3d2bd58053d2c9a5b259a987

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
03/12/2024, 20:27

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General

Target

Utilman.exe
Size

709KB
MD5

83aba31021b2d4613af088f11f784301
SHA1

906a0876fc94ad2e4ea10b3d6d61ca6788f1922d
SHA256

de8f674e914b11d418860730c0297cd0a0ea44aa3d2bd58053d2c9a5b259a987
SHA512

16cd85c45a035425ae9428ec657c60b2ce5c2bc8623385d46fa05896a5fd6ce61a93abe069cb11e0f8fd3ee98cd83319e6b09580fef6b8b57a6163a8592ec079
SSDEEP

12288:U9tpJ9zb1wqWIjX0n6j/PKJc3G5OF8wBjmqU888888888888W888888888884HMT:6ttzBwqWUX0c/W55GtQUMLIbvO

Score

10^/10

neshta discovery persistence privilege_escalation spyware stealer

Malware Config

Signatures

Detect Neshta payload 3 IoCs

resource	yara_rule
behavioral1/files/0x0001000000010319-11.dat	family_neshta
behavioral1/memory/2084-86-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/2084-88-0x0000000000400000-0x000000000041B000-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
Neshta family
neshta

Executes dropped EXE 1 IoCs

pid	Process
3008	Utilman.exe

Loads dropped DLL 2 IoCs

pid	Process
2084	Utilman.exe
2084	Utilman.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\" %*"	Utilman.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\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE	Utilman.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	Utilman.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	Utilman.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\WinMail.exe	Utilman.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	Utilman.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	Utilman.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.exe	Utilman.exe

Drops file in Windows directory 1 IoCs

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

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

System Information Discovery
T1082
Event Triggered Execution: Accessibility Features 1 TTPs
Windows contains accessibility features that may be used by adversaries to establish persistence and/or elevate privileges.
persistence privilege_escalation

Accessibility Features
T1546.008

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

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

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 3008	2084	Utilman.exe	30
PID 2084 wrote to memory of 3008	2084	Utilman.exe	30
PID 2084 wrote to memory of 3008	2084	Utilman.exe	30
PID 2084 wrote to memory of 3008	2084	Utilman.exe	30

C:\Users\Admin\AppData\Local\Temp\Utilman.exe
"C:\Users\Admin\AppData\Local\Temp\Utilman.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:2084
- C:\Users\Admin\AppData\Local\Temp\3582-490\Utilman.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\Utilman.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Accessibility Features

T1546.008

Change Default File Association

T1546.001

Privilege Escalation

Event Triggered Execution

T1546

Accessibility Features

T1546.008

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

Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
\Users\Admin\AppData\Local\Temp\3582-490\Utilman.exe

Filesize
669KB

MD5
660158b03c50e0bbc9a3b0821c89434d

SHA1
79ca4437ffa533bf1f711929621509f72ee199ab

SHA256
06b838ab8356069aa14e89af36236d0ef8499adac0c6646fc0f9d86e39b0adb5

SHA512
5f2474616edaaea39066b6400b3937ebe91896067af16312a713ad250ece5705e64a42cabd67eaaff880524e0fcf44b8131a72aa6a02c4dcb68aeb4719607559

Download Submit
memory/2084-86-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2084-88-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3008-9-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/3008-85-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads