neshta | 540a9949b24402819b69c2e701ac9a28d8a1f2e6c58fbf7abc63bbc1dc5ce53d

Analysis

max time kernel
16s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
28-08-2024 17:19

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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 3 IoCs

resource	yara_rule
behavioral1/files/0x0001000000010316-18.dat	family_neshta
behavioral1/memory/1368-106-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/1368-108-0x0000000000400000-0x000000000041B000-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
behavioral1/files/0x0008000000016d3f-5.dat	family_runningrat
behavioral1/memory/2364-9-0x0000000010000000-0x000000001000F000-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\\259481798.dll"	server.exe

Executes dropped EXE 2 IoCs

pid	Process
2364	server.exe
2692	SRDSL.exe

Loads dropped DLL 9 IoCs

pid	Process
1368	server.exe
2364	server.exe
2808	svchost.exe
1368	server.exe
2808	svchost.exe
2692	SRDSL.exe
2692	SRDSL.exe
2692	SRDSL.exe
2692	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\259481798.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\MICROS~1\Office14\GRAPH.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.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\Office14\ONENOTE.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	server.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.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\MICROS~1\MSInfo\msinfo32.exe	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\WinMail.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\{EF6B0~1\VCREDI~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\SELFCERT.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\ImagingDevices.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\GOF5E2~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	server.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\OIS.EXE	server.exe
File opened for modification	C:\PROGRA~2\WI4223~1\sidebar.exe	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.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\iexplore.exe	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.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~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.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\Office14\CNFNOT32.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	server.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	server.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	server.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	server.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	server.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	server.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~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\WINDOW~2\ACCESS~1\wordpad.exe	server.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~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	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SRDSL.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\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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	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 8 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 2364	1368	server.exe	30
PID 1368 wrote to memory of 2364	1368	server.exe	30
PID 1368 wrote to memory of 2364	1368	server.exe	30
PID 1368 wrote to memory of 2364	1368	server.exe	30
PID 2808 wrote to memory of 2692	2808	svchost.exe	33
PID 2808 wrote to memory of 2692	2808	svchost.exe	33
PID 2808 wrote to memory of 2692	2808	svchost.exe	33
PID 2808 wrote to memory of 2692	2808	svchost.exe	33

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.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:1368
- 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:2364

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
PID:2796

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:2808
- C:\Windows\SysWOW64\SRDSL.exe
  C:\Windows\system32\SRDSL.exe "c:\windows\system32\259481798.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:2692

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:\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\server.exe

Filesize
108KB

MD5
0476e0ff19dc008b1d02758d9a926b62

SHA1
31aa40a2030671d5104eea4aeb56ec1932334b52

SHA256
88c48fd936aed853b3d1b2a98ce73230318e571056e7341ba4d620ac78f0dae7

SHA512
f4f4e49c203ee2cf4fd5b26523b696947eb0c2761b5f3e10fcf29c21a16c6201b6047851829ce108350b8d9ee7bd2837242a6948f605cd2e0e0f9e143c2b43c6

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

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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

Filesize
44B

MD5
17e1428c5a27144242cbecc3249b7467

SHA1
4702911b27af2d3a6c59e4d2ede78fbbdd928263

SHA256
bc29911a27b210f132d05c293577a2081fc8120e3812bcc627647e578b61afb1

SHA512
fc9284cf55b8bae149ad11257ad6a4a30b6aa8f4d772868eb57a9899147379e346b5a8ac4897c058cfc8cd8ec41008c1ddafceb4bb00e06eea10c5550951076c

Download Submit
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
\Windows\SysWOW64\259481798.dll

Filesize
37KB

MD5
d85dfa45f350a29a1cd88615b3246563

SHA1
b1e24524428b710f3dd8c849569a6e56672c742e

SHA256
ee620d8f12d25f0626f959f55c69038398e6e580968c616a2930ccc118dfba23

SHA512
40c94107d3ff5071ac2160c67b8c2222ad97c2a9eebc40f0fb7412fff5af88aa272c3ed71de8986c197cdbd7cfa07fdb3d0b9f8f45dde16f020644cfe25affef

Download Submit
memory/1368-106-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1368-108-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2364-9-0x0000000010000000-0x000000001000F000-memory.dmp

Filesize
60KB

Download
memory/2364-16-0x0000000000250000-0x000000000025D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads