neshta | 540a9949b24402819b69c2e701ac9a28d8a1f2e6c58fbf7abc63bbc1dc5ce53d

Analysis

max time kernel
135s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
14/06/2023, 07:36

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General

Target

server.exe
Size

149KB
MD5

6f2e1c1cb75be2e41c2e584ad9519185
SHA1

091930c27a0515907848c3ff639f3f9342584e26
SHA256

540a9949b24402819b69c2e701ac9a28d8a1f2e6c58fbf7abc63bbc1dc5ce53d
SHA512

6c8fc29b79b273785edecefd4fb6f314e9b6780e7c6a7616ff954cab7a1faf47cc5eab2ebdd9df536da45425c9f0249e98a6bda8e65ed5f591de706d82d55a70
SSDEEP

1536:JxqjQ+P04wsmJCDcQlwJdMgxHJaAoHoc2x7bZoYBMHJaAoHoc2x7bZoYBS:sr85CDkPJQITxyYoQITxyY0

Score

10^/10

neshta runningrat persistence rat spyware stealer

Malware Config

Signatures

Detect Neshta payload 11 IoCs

resource	yara_rule
behavioral2/files/0x000700000001f009-156.dat	family_neshta
behavioral2/memory/2348-229-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-230-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-231-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-232-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-233-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-234-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-235-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-236-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-237-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2348-239-0x0000000000400000-0x000000000041B000-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
RunningRat
RunningRat is a remote access trojan first seen in 2018.
rat runningrat

RunningRat payload 4 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023142-137.dat	family_runningrat
behavioral2/files/0x0009000000023142-139.dat	family_runningrat
behavioral2/files/0x0009000000023142-141.dat	family_runningrat
behavioral2/memory/4304-143-0x0000000010000000-0x000000001000F000-memory.dmp	family_runningrat

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-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	server.exe

Executes dropped EXE 1 IoCs

pid	Process
4304	server.exe

Loads dropped DLL 2 IoCs

pid	Process
4304	server.exe
4304	server.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\" %*"	server.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 System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\240545937.dll	server.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MI9C33~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\INSTAL~1\setup.exe	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmlaunch.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MIA062~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\Download\{F3C4F~1\13173~1.45\MICROS~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MICROS~3.EXE	server.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE	server.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MICROS~2.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	server.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	server.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	server.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\COOKIE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\MSEDGE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	server.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~2.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE	server.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MI391D~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	server.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MICROS~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13173~1.45\MICROS~4.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	server.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\msedge.exe	server.exe

Drops file in Windows directory 1 IoCs

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

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5104	4304	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\" %*"	server.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 4304	2348	server.exe	82
PID 2348 wrote to memory of 4304	2348	server.exe	82
PID 2348 wrote to memory of 4304	2348	server.exe	82

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.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:2348
- C:\Users\Admin\AppData\Local\Temp\3582-490\server.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\server.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  PID:4304
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4304 -s 464
    3⤵
    - Program crash
    PID:5104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4304 -ip 4304
1⤵
PID:3656

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\server.exe

Filesize
108KB

MD5
0476e0ff19dc008b1d02758d9a926b62

SHA1
31aa40a2030671d5104eea4aeb56ec1932334b52

SHA256
88c48fd936aed853b3d1b2a98ce73230318e571056e7341ba4d620ac78f0dae7

SHA512
f4f4e49c203ee2cf4fd5b26523b696947eb0c2761b5f3e10fcf29c21a16c6201b6047851829ce108350b8d9ee7bd2837242a6948f605cd2e0e0f9e143c2b43c6

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

Filesize
108KB

MD5
0476e0ff19dc008b1d02758d9a926b62

SHA1
31aa40a2030671d5104eea4aeb56ec1932334b52

SHA256
88c48fd936aed853b3d1b2a98ce73230318e571056e7341ba4d620ac78f0dae7

SHA512
f4f4e49c203ee2cf4fd5b26523b696947eb0c2761b5f3e10fcf29c21a16c6201b6047851829ce108350b8d9ee7bd2837242a6948f605cd2e0e0f9e143c2b43c6

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

Filesize
108KB

MD5
0476e0ff19dc008b1d02758d9a926b62

SHA1
31aa40a2030671d5104eea4aeb56ec1932334b52

SHA256
88c48fd936aed853b3d1b2a98ce73230318e571056e7341ba4d620ac78f0dae7

SHA512
f4f4e49c203ee2cf4fd5b26523b696947eb0c2761b5f3e10fcf29c21a16c6201b6047851829ce108350b8d9ee7bd2837242a6948f605cd2e0e0f9e143c2b43c6

Download Submit
C:\Windows\SysWOW64\240545937.dll

Filesize
37KB

MD5
4103032917619dcc7106b44c7e352896

SHA1
408b944b675bc32d4b4f179c62a1f4fb4afbecc4

SHA256
ebf8697f5794258807543aa65ee24c44d7a705f4696e993c403425dacd7b2986

SHA512
178f9816a1e8467fdce2fab4f188c0e897ddec82eb101696b3af49bcaed93942746f9a3ade5718d7d47477e415beaf0ad638751dca87adb99c425d409cde9c56

Download Submit
C:\Windows\SysWOW64\240545937.dll

Filesize
37KB

MD5
4103032917619dcc7106b44c7e352896

SHA1
408b944b675bc32d4b4f179c62a1f4fb4afbecc4

SHA256
ebf8697f5794258807543aa65ee24c44d7a705f4696e993c403425dacd7b2986

SHA512
178f9816a1e8467fdce2fab4f188c0e897ddec82eb101696b3af49bcaed93942746f9a3ade5718d7d47477e415beaf0ad638751dca87adb99c425d409cde9c56

Download Submit
memory/2348-229-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-230-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-231-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-232-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-233-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-234-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-235-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-236-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-237-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2348-239-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/4304-151-0x0000000000920000-0x000000000092D000-memory.dmp

Filesize
52KB

Download
memory/4304-143-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download