neshta | 7c5fd9a2e93ad94d0b9edbb3921459c102de60e1af2fd0339c4777289fb305d8

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-01-2025 11:18

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General

Target

_$RHB6IUX.exe
Size

221KB
MD5

8288e3c2e95bc91e8594c8e23cab5a12
SHA1

ee18b73b5584050165d63d607d4f6948cc6bf490
SHA256

7c5fd9a2e93ad94d0b9edbb3921459c102de60e1af2fd0339c4777289fb305d8
SHA512

718d90baeeb7ea290a3956d03f1e23a304c7d4e3838538adc85c1e50ebc68239de3fa4b137e0d72350436b509fbda2380540b0b7cea2ec517efe89b6cdf85df6
SSDEEP

6144:k9lyzjvbzNdX5EWITq2UCNBGgaoSbR5U7rwN02X:l/FdXFf2UKBGgaoSVxXX

Score

10^/10

neshta discovery persistence spyware stealer upx

Malware Config

Signatures

Detect Neshta payload 3 IoCs

resource	yara_rule
behavioral1/files/0x0001000000010318-16.dat	family_neshta
behavioral1/memory/2112-90-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/2112-92-0x0000000000400000-0x000000000041B000-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
2828	_$RHB6IUX.exe

Loads dropped DLL 3 IoCs

pid	Process
2112	_$RHB6IUX.exe
2112	_$RHB6IUX.exe
2112	_$RHB6IUX.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\" %*"	_$RHB6IUX.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

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x0008000000015d07-2.dat	upx
behavioral1/memory/2828-15-0x0000000000AC0000-0x0000000000B0A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\OIS.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\WinMail.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	_$RHB6IUX.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	_$RHB6IUX.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	_$RHB6IUX.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	_$RHB6IUX.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\" %*"	_$RHB6IUX.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2828	2112	_$RHB6IUX.exe	31
PID 2112 wrote to memory of 2828	2112	_$RHB6IUX.exe	31
PID 2112 wrote to memory of 2828	2112	_$RHB6IUX.exe	31
PID 2112 wrote to memory of 2828	2112	_$RHB6IUX.exe	31

C:\Users\Admin\AppData\Local\Temp\_$RHB6IUX.exe
"C:\Users\Admin\AppData\Local\Temp\_$RHB6IUX.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:2112
- C:\Users\Admin\AppData\Local\Temp\3582-490\_$RHB6IUX.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\_$RHB6IUX.exe"
  2⤵
  - Executes dropped EXE
  PID:2828

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
\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\_$RHB6IUX.exe

Filesize
180KB

MD5
b8a6bb8a9d2b402368d26b88f7764544

SHA1
fa233c1e4985a5a3599cc5490746c641bb676e15

SHA256
56fa446d493ff95ed3c750caa4fd13ebdbed6825242beb541da5ef624c0e989b

SHA512
bbff23dabe7cd3d57c606f07d0bc078ca78a253c0f546b1abb2b08be3875cb34f3655eeda4306feafaa61aa82956e277990260114f7caf5fb80845714b062ef0

Download Submit
memory/2112-13-0x00000000029D0000-0x0000000002A1A000-memory.dmp

Filesize
296KB

Download
memory/2112-12-0x00000000029D0000-0x0000000002A1A000-memory.dmp

Filesize
296KB

Download
memory/2112-89-0x00000000029D0000-0x0000000002A1A000-memory.dmp

Filesize
296KB

Download
memory/2112-90-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2112-92-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2828-15-0x0000000000AC0000-0x0000000000B0A000-memory.dmp

Filesize
296KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads