neshta | f894d3df8c6df4117d44d958382a5ba47ab288e2cc5e7fd8c793ceef1a21a220

Analysis

max time kernel
841s
max time network
849s
platform
windows7_x64
resource
win7-20240704-es
resource tags

arch:x64arch:x86image:win7-20240704-eslocale:es-esos:windows7-x64systemwindows
submitted
25-07-2024 23:29

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General

Target

05 CITACION DEMANDA EN SU CONTRA - JUZGADO PENAL 01 DEL CIRCUITO RAMA JUDICIAL ESPECIALIZADO/OperaSetup.exe
Size

2.1MB
MD5

6c01a631f7c31ce735c757a33537e95b
SHA1

60bee89ee0f2da909c83d2e71413afdb2c4e3648
SHA256

7f1b8f48b9b9e7a43b4689e2d4fcf0ace7a251e4801d5b0d666414e7604359e0
SHA512

6e1d49190afd096ddf469273e8e59531fe7a951ca262d6b90035f69c6510e6c949fcb781fa6031f47b81016654b832544563c9b124165e3a18b23bb3311101f8
SSDEEP

49152:iNEyYMnDfIZ54N+FVbKDR5s5R+M8nAZWVqNmHhO:4EIxO8s5R+MZhQ0

Score

10^/10

neshta discovery persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 3 IoCs

resource	yara_rule
behavioral5/files/0x0001000000010314-13.dat	family_neshta
behavioral5/memory/1888-90-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral5/memory/1888-92-0x0000000000400000-0x000000000041B000-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

Executes dropped EXE 2 IoCs

pid	Process
2728	OperaSetup.exe
3004	setup.exe

Loads dropped DLL 4 IoCs

pid	Process
1888	OperaSetup.exe
2728	OperaSetup.exe
2728	OperaSetup.exe
1888	OperaSetup.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\" %*"	OperaSetup.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
T1552.001

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\OIS.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\misc.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\WinMail.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	OperaSetup.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE	OperaSetup.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	OperaSetup.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	OperaSetup.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 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	OperaSetup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	OperaSetup.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\" %*"	OperaSetup.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1888 wrote to memory of 2728	1888	OperaSetup.exe	30
PID 1888 wrote to memory of 2728	1888	OperaSetup.exe	30
PID 1888 wrote to memory of 2728	1888	OperaSetup.exe	30
PID 1888 wrote to memory of 2728	1888	OperaSetup.exe	30
PID 1888 wrote to memory of 2728	1888	OperaSetup.exe	30
PID 1888 wrote to memory of 2728	1888	OperaSetup.exe	30
PID 1888 wrote to memory of 2728	1888	OperaSetup.exe	30

C:\Users\Admin\AppData\Local\Temp\05 CITACION DEMANDA EN SU CONTRA - JUZGADO PENAL 01 DEL CIRCUITO RAMA JUDICIAL ESPECIALIZADO\OperaSetup.exe
"C:\Users\Admin\AppData\Local\Temp\05 CITACION DEMANDA EN SU CONTRA - JUZGADO PENAL 01 DEL CIRCUITO RAMA JUDICIAL ESPECIALIZADO\OperaSetup.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:1888
- C:\Users\Admin\AppData\Local\Temp\3582-490\OperaSetup.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\OperaSetup.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2728
- - C:\Users\Admin\AppData\Local\Temp\7zS8AA122A6\setup.exe
    C:\Users\Admin\AppData\Local\Temp\7zS8AA122A6\setup.exe --server-tracking-blob=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
    3⤵
    - Executes dropped EXE
    PID:3004

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

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

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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\OperaSetup.exe

Filesize
2.0MB

MD5
080bf22fdb2e1db7c9bd20433b1fde60

SHA1
03c250d60170c9ed13dd475ca44b5439a34e8813

SHA256
17ce89c377997b79f5de5d83d72e700b79b9bc7fbbff2c55c36fed74cb9699be

SHA512
285eedf2742650d18d6f7d489901cb92472fda95dece3a473aded805a55a7419cf11bb2d801299cdd9ac29b57586889d4d4b87589fe0c62398ac3456821b0617

Download Submit
C:\Users\Admin\AppData\Local\Temp\7zS8AA122A6\setup.exe

Filesize
5.2MB

MD5
5b591929769effed06e395c91c7ca453

SHA1
caab87c0d3011d6deed74308e51ec530f7c5eef6

SHA256
d927f1cdb6c5ac43386c213d7d7aca13c6b5e403cf35bf8d598c3839bbc66fab

SHA512
a30f8fe5f4532457c0bd9070c0fcf2470207edabdb1f11698b6fc788442e9f04dd1e2a738b098e5488dfe736418d0b7f1ccd21bd9348108e54e88be1521a5cac

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/1888-90-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1888-92-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads