neshta | ca4a862e957347dc3501e55fcf6ab8d130f141afea00c22f3bf25bf938531a35

General

Target

bnm.exe
Size

18KB
MD5

0893f96ed6831c745ebc3d19d9f96749
SHA1

5b33dfac19433268f3c8964aecd6cdc83569cfa6
SHA256

ca4a862e957347dc3501e55fcf6ab8d130f141afea00c22f3bf25bf938531a35
SHA512

0a2e3b791c24f741ce34f52c375f91a7d1bc4139e56fe9f6a08bef11c6cc4aeb510fa50c4605e5b79d19d1460fb87994d6fd9d6fe5d82031d4c6520154144d28

Score

10^/10

neshta persistence spyware

Malware Config

Signatures

Detect Neshta payload 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/616-142-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/616-143-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/616-144-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/616-145-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/616-146-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

InstallUtil.exe

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

Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
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:

bnm.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation bnm.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	bnm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bnm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Qzuyto = "\"C:\\Users\\Admin\\AppData\\Roaming\\Jhmvnf\\Qzuyto.exe\""	bnm.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

bnm.exe

description pid process target process

PID 5112 set thread context of 616 5112 bnm.exe InstallUtil.exe

description	pid	process	target process
PID 5112 set thread context of 616	5112	bnm.exe	InstallUtil.exe

Drops file in Program Files directory 64 IoCs

Processes:

InstallUtil.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MIA062~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\PWAHEL~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\msedge.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmlaunch.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~3.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\PWAHEL~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MI9C33~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOF5E2~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MID1AD~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~4.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~4.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\COOKIE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\INSTAL~1\setup.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~3.EXE	InstallUtil.exe

Drops file in Windows directory 1 IoCs

Processes:

InstallUtil.exe

description ioc process

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

System Information Discovery
T1082

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

Modifies registry class 1 IoCs

Processes:

InstallUtil.exe

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exebnm.exe

pid process

1416 powershell.exe
1416 powershell.exe
5112 bnm.exe
5112 bnm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

bnm.exepowershell.exe

description pid process

Token: SeDebugPrivilege 5112 bnm.exe
Token: SeDebugPrivilege 1416 powershell.exe

pid	process
1416	powershell.exe
1416	powershell.exe
5112	bnm.exe
5112	bnm.exe

description	pid	process
Token: SeDebugPrivilege	5112	bnm.exe
Token: SeDebugPrivilege	1416	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

bnm.exe

description	pid	process	target process
PID 5112 wrote to memory of 1416	5112	bnm.exe	powershell.exe
PID 5112 wrote to memory of 1416	5112	bnm.exe	powershell.exe
PID 5112 wrote to memory of 1416	5112	bnm.exe	powershell.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe
PID 5112 wrote to memory of 616	5112	bnm.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\bnm.exe
"C:\Users\Admin\AppData\Local\Temp\bnm.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5112
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANAA=
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1416
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  - Modifies system executable filetype association
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Modifies registry class
  PID:616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/616-141-0x0000000000000000-mapping.dmp

Download
memory/616-146-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/616-145-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/616-144-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/616-143-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/616-142-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1416-134-0x0000000002F80000-0x0000000002FB6000-memory.dmp

Filesize
216KB

Download
memory/1416-137-0x0000000005F60000-0x0000000005FC6000-memory.dmp

Filesize
408KB

Download
memory/1416-138-0x0000000006560000-0x000000000657E000-memory.dmp

Filesize
120KB

Download
memory/1416-139-0x0000000007B80000-0x00000000081FA000-memory.dmp

Filesize
6.5MB

Download
memory/1416-140-0x0000000006A70000-0x0000000006A8A000-memory.dmp

Filesize
104KB

Download
memory/1416-136-0x0000000005660000-0x00000000056C6000-memory.dmp

Filesize
408KB

Download
memory/1416-135-0x0000000005700000-0x0000000005D28000-memory.dmp

Filesize
6.2MB

Download
memory/1416-133-0x0000000000000000-mapping.dmp

Download
memory/5112-130-0x0000000000DB0000-0x0000000000DBA000-memory.dmp

Filesize
40KB

Download
memory/5112-132-0x00000000068D0000-0x00000000068F2000-memory.dmp

Filesize
136KB

Download
memory/5112-131-0x0000000005C00000-0x00000000061A4000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads