neshta | fdcb3e322b8dde7c299effd302a4292b1b673a2171514333cb14b3df8db6ad2c

Analysis

max time kernel
128s
max time network
197s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
31/03/2023, 11:12

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General

Target

DecryptNovo.exe
Size

2.8MB
MD5

1c73eefcec088f539914a70d49777dab
SHA1

89dc3ae4777ed534543c31d54151a6938c23f668
SHA256

e6b5ffc38fd7214f723394c2b133339b426f5a8d236b8a073859b1d173c09fd8
SHA512

9eac52d958db3dbbcaef903f965363930b8e1f0281948c033cb8657612ca0d51100b4def21c6786a5aa22bff18d8d253e3024e7a256a089f84d979a92531a265
SSDEEP

49152:1I7+r/51z6SC9SFgiJGL6N1j6oT/petj:1IqrxNk6N1me0

Score

10^/10

neshta persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 11 IoCs

resource	yara_rule
behavioral2/files/0x000700000001f078-146.dat	family_neshta
behavioral2/memory/1548-158-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-220-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-221-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-222-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-223-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-224-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-225-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-226-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-227-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1548-229-0x0000000000400000-0x000000000041B000-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	DecryptNovo.exe

Executes dropped EXE 1 IoCs

pid	Process
4124	DecryptNovo.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

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

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\BHO\IE_TO_~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\INSTAL~1\setup.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MI391D~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MICROS~3.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\COOKIE~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\PWAHEL~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\NOTIFI~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MIA062~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\Download\{F3C4F~1\13173~1.45\MICROS~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MICROS~2.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\MicrosoftEdgeUpdate.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\PWAHEL~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\msedge.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\MSEDGE~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MICROS~4.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MI9C33~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	DecryptNovo.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~2.EXE	DecryptNovo.exe

Drops file in Windows directory 1 IoCs

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

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3544	4124	WerFault.exe	82

Modifies registry class 1 IoCs

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

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1548 wrote to memory of 4124	1548	DecryptNovo.exe	82
PID 1548 wrote to memory of 4124	1548	DecryptNovo.exe	82
PID 1548 wrote to memory of 4124	1548	DecryptNovo.exe	82

C:\Users\Admin\AppData\Local\Temp\DecryptNovo.exe
"C:\Users\Admin\AppData\Local\Temp\DecryptNovo.exe"
1⤵
- Checks computer location settings
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Users\Admin\AppData\Local\Temp\3582-490\DecryptNovo.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\DecryptNovo.exe"
  2⤵
  - Executes dropped EXE
  PID:4124
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4124 -s 428
    3⤵
    - Program crash
    PID:3544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4124 -ip 4124
1⤵
PID:1892

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe

Filesize
2.4MB

MD5
8ffc3bdf4a1903d9e28b99d1643fc9c7

SHA1
919ba8594db0ae245a8abd80f9f3698826fc6fe5

SHA256
8268d3fefe8ca96a25a73690d14bacf644170ab5e9e70d2f8eeb350a4c83f9f6

SHA512
0b94ead97374d74eaee87e7614ddd3911d2cf66d4c49abbfd06b02c03e5dd56fd00993b4947e8a4bcd9d891fa39cab18cc6b61efc7d0812e91eb3aea9cd1a427

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\DecryptNovo.exe

Filesize
2.8MB

MD5
d43813a35e907c9c436e6976964d13a0

SHA1
dbf101d5674dfc040ba86599e7cec87717ed7f40

SHA256
0afaf175f84d2d45f5791c2220ea4708e7669cd173d387a937b634c53a2b765d

SHA512
2f9333faa6a416d1d5a8c910f6d86a289fd4db47e7430d41395b27553c0bb270e75165d69423c14303b84323cb6706209099037fe6178b274bcf306afeadf8bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\DecryptNovo.exe

Filesize
2.8MB

MD5
d43813a35e907c9c436e6976964d13a0

SHA1
dbf101d5674dfc040ba86599e7cec87717ed7f40

SHA256
0afaf175f84d2d45f5791c2220ea4708e7669cd173d387a937b634c53a2b765d

SHA512
2f9333faa6a416d1d5a8c910f6d86a289fd4db47e7430d41395b27553c0bb270e75165d69423c14303b84323cb6706209099037fe6178b274bcf306afeadf8bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\DecryptNovo.exe

Filesize
2.8MB

MD5
d43813a35e907c9c436e6976964d13a0

SHA1
dbf101d5674dfc040ba86599e7cec87717ed7f40

SHA256
0afaf175f84d2d45f5791c2220ea4708e7669cd173d387a937b634c53a2b765d

SHA512
2f9333faa6a416d1d5a8c910f6d86a289fd4db47e7430d41395b27553c0bb270e75165d69423c14303b84323cb6706209099037fe6178b274bcf306afeadf8bb

Download Submit
memory/1548-223-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-158-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-220-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-221-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-222-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-224-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-225-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-226-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-227-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1548-229-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/4124-143-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download