neshta | 70707206bfdc0b86a9494f7780c55829e993a93a7d65d0279bc9c73b97ffc005 | Triage

Resubmissions

14-09-2021 09:52

210914-lv85wsaebj 10

09-07-2021 18:31

210709-dplxbpw8y2 10

Analysis

max time kernel
72s
max time network
119s
platform
windows10_x64
resource
win10v20210408
submitted
09-07-2021 18:31

Sharing

Report Analysis Logs

General

Target

bf4ca3ef810bbc866015723e09cdfb7b.exe
Size

476KB
MD5

bf4ca3ef810bbc866015723e09cdfb7b
SHA1

b1ef1b47cb790ee88866d31bb09929a516e36caf
SHA256

70707206bfdc0b86a9494f7780c55829e993a93a7d65d0279bc9c73b97ffc005
SHA512

1fdac4d5fc922265871ac741fb3241e28307e6c52297e515e8e5aaeb85c9fb2c88183a3a0f080c4ae9e53e1553064d9308a74b5888b8c42f813e395c09aa45b8

Score

10^/10

neshta persistence spyware stealer

Malware Config

Signatures

Detect Neshta Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1280-128-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1280-129-0x00000000004080E4-mapping.dmp	family_neshta
behavioral2/memory/1280-130-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs

Modify Registry

Change Default File Association

Processes:

bf4ca3ef810bbc866015723e09cdfb7b.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	bf4ca3ef810bbc866015723e09cdfb7b.exe

Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
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
Suspicious use of SetThreadContext 1 IoCs

Processes:

bf4ca3ef810bbc866015723e09cdfb7b.exe

description pid process target process

PID 3728 set thread context of 1280 3728 bf4ca3ef810bbc866015723e09cdfb7b.exe bf4ca3ef810bbc866015723e09cdfb7b.exe

Drops file in Program Files directory 55 IoCs

Processes:

bf4ca3ef810bbc866015723e09cdfb7b.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOBD5D~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~2.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Temp\GUM18A1.tmp\GOFB2B~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\WinMail.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ACCESS~1\wordpad.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOFB2B~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\armsvc.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~3.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~4.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOF5E2~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GO664E~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{F4220~1\VC_RED~1.EXE	bf4ca3ef810bbc866015723e09cdfb7b.exe

Drops file in Windows directory 1 IoCs

Processes:

bf4ca3ef810bbc866015723e09cdfb7b.exe

description ioc process

File opened for modification C:\Windows\svchost.com bf4ca3ef810bbc866015723e09cdfb7b.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

bf4ca3ef810bbc866015723e09cdfb7b.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	bf4ca3ef810bbc866015723e09cdfb7b.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

bf4ca3ef810bbc866015723e09cdfb7b.exe

pid	process
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe
3728	bf4ca3ef810bbc866015723e09cdfb7b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

bf4ca3ef810bbc866015723e09cdfb7b.exe

description pid process

Token: SeDebugPrivilege 3728 bf4ca3ef810bbc866015723e09cdfb7b.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

bf4ca3ef810bbc866015723e09cdfb7b.exe

description	pid	process	target process
PID 3728 wrote to memory of 980	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 980	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 980	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1480	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1480	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1480	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe
PID 3728 wrote to memory of 1280	3728	bf4ca3ef810bbc866015723e09cdfb7b.exe	bf4ca3ef810bbc866015723e09cdfb7b.exe

C:\Users\Admin\AppData\Local\Temp\bf4ca3ef810bbc866015723e09cdfb7b.exe
"C:\Users\Admin\AppData\Local\Temp\bf4ca3ef810bbc866015723e09cdfb7b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3728
- C:\Users\Admin\AppData\Local\Temp\bf4ca3ef810bbc866015723e09cdfb7b.exe
  C:\Users\Admin\AppData\Local\Temp\bf4ca3ef810bbc866015723e09cdfb7b.exe
  2⤵
  PID:980
- C:\Users\Admin\AppData\Local\Temp\bf4ca3ef810bbc866015723e09cdfb7b.exe
  C:\Users\Admin\AppData\Local\Temp\bf4ca3ef810bbc866015723e09cdfb7b.exe
  2⤵
  PID:1480
- C:\Users\Admin\AppData\Local\Temp\bf4ca3ef810bbc866015723e09cdfb7b.exe
  C:\Users\Admin\AppData\Local\Temp\bf4ca3ef810bbc866015723e09cdfb7b.exe
  2⤵
  - Modifies system executable filetype association
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Modifies registry class
  PID:1280

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

Privilege Escalation

Defense Evasion

Modify Registry

Credential Access

Credentials in Files

Discovery

System Information Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1280-128-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1280-129-0x00000000004080E4-mapping.dmp

Download
memory/1280-130-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3728-114-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/3728-116-0x0000000005360000-0x0000000005361000-memory.dmp

Filesize
4KB

Download
memory/3728-117-0x0000000004D20000-0x0000000004D21000-memory.dmp

Filesize
4KB

Download
memory/3728-118-0x0000000004E60000-0x000000000535E000-memory.dmp

Filesize
5.0MB

Download
memory/3728-119-0x0000000004CD0000-0x0000000004CD1000-memory.dmp

Filesize
4KB

Download
memory/3728-120-0x00000000068D0000-0x0000000006931000-memory.dmp

Filesize
388KB

Download
memory/3728-121-0x00000000069C0000-0x00000000069C1000-memory.dmp

Filesize
4KB

Download
memory/3728-122-0x0000000005080000-0x0000000005081000-memory.dmp

Filesize
4KB

Download
memory/3728-127-0x00000000075A0000-0x0000000007602000-memory.dmp

Filesize
392KB

Download