neshta | 540a9949b24402819b69c2e701ac9a28d8a1f2e6c58fbf7abc63bbc1dc5ce53d

Analysis

max time kernel
134s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28-08-2024 17:35

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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 discovery persistence rat spyware stealer

Malware Config

Signatures

Detect Neshta payload 4 IoCs

resource	yara_rule
behavioral2/files/0x000600000002024c-28.dat	family_neshta
behavioral2/memory/2652-114-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2652-115-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2652-117-0x0000000000400000-0x000000000041B000-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 2 IoCs

resource	yara_rule
behavioral2/files/0x000800000002345f-4.dat	family_runningrat
behavioral2/memory/2956-10-0x0000000010000000-0x000000001000F000-memory.dmp	family_runningrat

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SRDSL\Parameters\ServiceDll = "C:\\Windows\\system32\\240612453.dll"	server.exe

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	server.exe

Executes dropped EXE 2 IoCs

pid	Process
2956	server.exe
3904	SRDSL.exe

Loads dropped DLL 4 IoCs

pid	Process
2956	server.exe
2956	server.exe
2428	svchost.exe
3904	SRDSL.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\" %*"	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
T1552.001

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\SRDSL.exe	svchost.exe
File created	C:\Windows\SysWOW64\240612453.dll	server.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	server.exe
File created	C:\Windows\SysWOW64\SRDSL.exe	svchost.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.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\Google\Update\1336~1.371\GO664E~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\PWAHEL~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~4.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\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\javaw.exe	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~3.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~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13195~1.15\MICROS~4.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\Adobe\ACROBA~1\Reader\READER~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\Google\Update\1336~1.371\GOOGLE~1.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\MicrosoftEdgeUpdate.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\{EF6B0~1\VCREDI~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOBD5D~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\Download\{F3C4F~1\13195~1.15\MICROS~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\Adobe\ACROBA~1\Reader\arh.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\Google\Update\DISABL~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13195~1.15\MICROS~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13195~1.15\MI9C33~1.EXE	server.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.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\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\COOKIE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	server.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{63880~1\WINDOW~1.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\Edge\APPLIC~1\PWAHEL~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13195~1.15\MICROS~3.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13195~1.15\MIA062~1.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\MICROS~1\Edge\APPLIC~1\920902~1.67\BHO\IE_TO_~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~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	server.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{D87AE~1\WINDOW~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\java.exe	server.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmlaunch.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\Google\Update\1336~1.371\GOF5E2~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13195~1.15\MI391D~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmprph.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\AcroRd32.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.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\COMMON~1\Oracle\Java\javapath\javaws.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\msedge.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\FULLTR~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	server.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.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

System Location Discovery: System Language Discovery 1 TTPs 4 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	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SRDSL.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	SRDSL.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	SRDSL.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	SRDSL.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	SRDSL.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum\Version = "7"	SRDSL.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	SRDSL.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	SRDSL.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\" %*"	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2956	2652	server.exe	84
PID 2652 wrote to memory of 2956	2652	server.exe	84
PID 2652 wrote to memory of 2956	2652	server.exe	84
PID 2428 wrote to memory of 3904	2428	svchost.exe	91
PID 2428 wrote to memory of 3904	2428	svchost.exe	91
PID 2428 wrote to memory of 3904	2428	svchost.exe	91

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
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Users\Admin\AppData\Local\Temp\3582-490\server.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\server.exe"
  2⤵
  - Server Software Component: Terminal Services DLL
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  PID:2956

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
PID:2884

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Windows\SysWOW64\SRDSL.exe
  C:\Windows\system32\SRDSL.exe "c:\windows\system32\240612453.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  PID:3904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Server Software Component

T1505

Terminal Services DLL

T1505.005

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

Query Registry

T1012

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:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

Filesize
86KB

MD5
3b73078a714bf61d1c19ebc3afc0e454

SHA1
9abeabd74613a2f533e2244c9ee6f967188e4e7e

SHA256
ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

SHA512
75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

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\240612453.dll

Filesize
37KB

MD5
ce41f6b2ce70c8fdaf1738ae922a0e94

SHA1
7b945273b184c422ff8bcf2d3fe211993ef28efd

SHA256
903a3be99412a3562ff6d51c6c16bafa11c95db8daf5705a268d3cba0b351f56

SHA512
915616986fd84d7e447cdf1f9410f239a6d914f8e339dbafd18b0312b2af38c158ded1f1e262f147af0e7b3ced74e94d604c74fdebee8ca7e3d1f61e81b474ce

Download Submit
C:\Windows\SysWOW64\SRDSL.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Windows\SysWOW64\ini.ini

Filesize
44B

MD5
b764216e547fab6ee3366986f54f0139

SHA1
c397a2dabc93e026ce26ee490356d22c672462ce

SHA256
92e8d5211a37d596eaf960ac13cc1ff23ee4debb1ad34302f64e4f4c9219d802

SHA512
a8e242a2414817f639a54289a35457950f92393f9b92253aaf3c348814bd316fa9ed87426a3edabd878111f2ce3b839ec0c1349b84d98820a50d3dca05ec3476

Download Submit
memory/2652-114-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2652-115-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2652-117-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2956-10-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/2956-17-0x00000000007A0000-0x00000000007AD000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads