neshta | 540a9949b24402819b69c2e701ac9a28d8a1f2e6c58fbf7abc63bbc1dc5ce53d

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

Processes:

resource	yara_rule
C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	family_neshta
behavioral2/memory/2236-114-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2236-115-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/2236-117-0x0000000000400000-0x000000000041B000-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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\3582-490\server.exe	family_runningrat
behavioral2/memory/3144-10-0x0000000010000000-0x000000001000F000-memory.dmp	family_runningrat

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

Processes:

server.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SRDSL\Parameters\ServiceDll = "C:\\Windows\\system32\\240621281.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

Processes:

server.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation server.exe
Executes dropped EXE 2 IoCs

Processes:

server.exeSRDSL.exe

pid process

3144 server.exe
2432 SRDSL.exe
Loads dropped DLL 4 IoCs

Processes:

server.exesvchost.exeSRDSL.exe

pid process

3144 server.exe
3144 server.exe
732 svchost.exe
2432 SRDSL.exe
Modifies system executable filetype association 2 TTPs 1 IoCs
persistence

Modify Registry
T1112

Change Default File Association
T1546.001

Processes:

server.exe

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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	server.exe

pid	process
3144	server.exe
2432	SRDSL.exe

pid	process
3144	server.exe
3144	server.exe
732	svchost.exe
2432	SRDSL.exe

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

Drops file in System32 directory 4 IoCs

Processes:

server.exesvchost.exe

description	ioc	process
File created	C:\Windows\SysWOW64\240621281.dll	server.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	server.exe
File created	C:\Windows\SysWOW64\SRDSL.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\SRDSL.exe	svchost.exe

Drops file in Program Files directory 64 IoCs

Processes:

server.exe

description	ioc	process
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\ADOBEC~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\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~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\Google\Update\1336~1.371\GO664E~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\MICROS~1\Edge\APPLIC~1\PWAHEL~1.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\COMMON~1\Adobe\ARM\1.0\AdobeARM.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~3\PACKAG~1\{EF6B0~1\VCREDI~1.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\MOZILL~1\UNINST~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\Google\Update\1336~1.371\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\13195~1.15\MI391D~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~2\MICROS~1\EDGEUP~1\Download\{F3C4F~1\13195~1.15\MICROS~1.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\{EF5AF~1\WINDOW~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.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\MOZILL~1\MAINTE~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\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmprph.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\LOGTRA~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\MICROS~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\Adobe\ACROBA~1\Reader\ACROBR~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\plug_ins\PI_BRO~1\64BITM~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\MICROS~1\Edge\APPLIC~1\920902~1.67\msedge.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\COMMON~1\Java\JAVAUP~1\jaureg.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\Google\Update\DISABL~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\MicrosoftEdgeUpdate.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~3\PACKAG~1\{61087~1\VCREDI~1.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\INTERN~1\ielowutil.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\920902~1.67\ELEVAT~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\WINDOW~4\wmpshare.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\{33D1F~1\VCREDI~1.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\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\MICROS~1\Edge\APPLIC~1\MSEDGE~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\COMMON~1\Oracle\Java\javapath\java.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\COMMON~1\Oracle\Java\javapath\javaws.exe	server.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~3.EXE	server.exe

Drops file in Windows directory 1 IoCs

Processes:

server.exe

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

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

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

Processes:

SRDSL.exeserver.exeserver.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SRDSL.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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

Processes:

SRDSL.exe

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

Processes:

SRDSL.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum	SRDSL.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	SRDSL.exe
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

Modifies registry class 1 IoCs

Processes:

server.exe

description ioc process

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

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

Processes:

server.exesvchost.exe

description	pid	process	target process
PID 2236 wrote to memory of 3144	2236	server.exe	server.exe
PID 2236 wrote to memory of 3144	2236	server.exe	server.exe
PID 2236 wrote to memory of 3144	2236	server.exe	server.exe
PID 732 wrote to memory of 2432	732	svchost.exe	SRDSL.exe
PID 732 wrote to memory of 2432	732	svchost.exe	SRDSL.exe
PID 732 wrote to memory of 2432	732	svchost.exe	SRDSL.exe

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:2236
- 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:3144

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
PID:3456

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:732
- C:\Windows\SysWOW64\SRDSL.exe
  C:\Windows\system32\SRDSL.exe "c:\windows\system32\240621281.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:2432

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

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\240621281.dll

Filesize
37KB

MD5
65ecdebb88665f1b5a8477014be54156

SHA1
51c67ba79cac86b7dba7b1159e9d4039b5856ad8

SHA256
2e66a405b3a6fbddfde876f9cf0050f669f2639830a1794a934bfc8b1751ac91

SHA512
8d1a22e53ca3dfb6a4cc3a2d817673a27e2e10c781ae398b29e0a4b9e67513561b815340c278c9bc17c9d9d109a07f93678670e0021117bbf912ba61e512b7ee

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
46a30e239e888f51fe40000023417ac0

SHA1
7fa71f89e171cb730ea476f5069d721f87d6b925

SHA256
ae4c6605315240401e8ebff72bafa3100ad7b227c17c59e2c0a8b210a94fa149

SHA512
c72e0e371da95fed726b80f211fe5643a11c94bf0d3971ce6f25f3b03187e97364b39f30a938b3339f1ea8b19a1d31923c7f6ea9c0e198f657431db850a4c514

Download Submit
memory/2236-114-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2236-115-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2236-117-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3144-10-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/3144-17-0x00000000020E0000-0x00000000020ED000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads