neshta | 4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975

General

Target

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
Size

675KB
MD5

d81905e927e4a65ee7bad34cacca9e4b
SHA1

13efe6ca3fddfd405a019b44a4450ac7c5f26855
SHA256

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975
SHA512

209cc50e03e44f64dc922042308325bc1dd54b4ccc573bc749da091d9e61f9211e60a4042cec0fc2a4dc58e189b2aa61261ff5614a01b8ff85781eb200e05981

Score

10^/10

neshta persistence spyware

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
Executes dropped EXE 1 IoCs

Processes:

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

pid process

3688 4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

pid	process
3688	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.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:

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

Drops file in Program Files directory 14 IoCs

Processes:

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

Drops file in Windows directory 1 IoCs

Processes:

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

description ioc process

File opened for modification C:\Windows\svchost.com 4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.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

Processes:

WerFault.exe

pid pid_target process target process

436 3688 WerFault.exe 4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

description	ioc	process
File opened for modification	C:\Windows\svchost.com	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

pid	pid_target	process	target process
436	3688	WerFault.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

Modifies registry class 1 IoCs

Processes:

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

description	pid	process	target process
PID 2476 wrote to memory of 3688	2476	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
PID 2476 wrote to memory of 3688	2476	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
PID 2476 wrote to memory of 3688	2476	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe	4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe

C:\Users\Admin\AppData\Local\Temp\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
"C:\Users\Admin\AppData\Local\Temp\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe"
1⤵
- Modifies system executable filetype association
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2476

C:\Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe"
2⤵
- Executes dropped EXE
PID:3688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3688 -s 1080
3⤵
- Program crash
PID:436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3688 -ip 3688
1⤵
PID:1928

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
Filesize
635KB

MD5
393973f9be63591a8c6c6dee5772766b

SHA1
36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

SHA256
39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

SHA512
dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\4bc3a42063eea890433246bdade50c4cd6bd6083a1f3d9927aa076ef546bb975.exe
Filesize
635KB

MD5
393973f9be63591a8c6c6dee5772766b

SHA1
36fcd878fdd47cfeaf9612f6afe7e307e4d865e5

SHA256
39c0fa9af0b62527d692924321a2dc981c6c5cc4de212365c6674131495ca37f

SHA512
dca4be7e8036321b27b19b703ada8e66b3c52f1c6fbbd0b10630fa6cebd8412ad62293a54a91160156f473715f902f4a1d07576ec8f66a0fbf71a25527b25a66

Download Submit
memory/3688-130-0x0000000000000000-mapping.dmp

Download
memory/3688-133-0x0000000000D70000-0x0000000000E16000-memory.dmp

Filesize
664KB

Download
memory/3688-134-0x00000000057E0000-0x000000000587C000-memory.dmp

Filesize
624KB

Download
memory/3688-135-0x0000000005E30000-0x00000000063D4000-memory.dmp

Filesize
5.6MB

Download
memory/3688-136-0x0000000005880000-0x0000000005912000-memory.dmp

Filesize
584KB

Download
memory/3688-138-0x0000000005AC0000-0x0000000005B16000-memory.dmp

Filesize
344KB

Download
memory/3688-137-0x00000000057C0000-0x00000000057CA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads