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 7 IoCs

Processes:

resource	yara_rule
behavioral1/memory/864-73-0x00000000004080E4-mapping.dmp	family_neshta
behavioral1/memory/864-72-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/864-74-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/864-76-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/864-77-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/864-79-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/864-80-0x0000000000400000-0x000000000041B000-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
Loads dropped DLL 1 IoCs

Processes:

InstallUtil.exe

pid process

864 InstallUtil.exe

pid	process
864	InstallUtil.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-1-5-21-3762437355-3468409815-1164039494-1000\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 1396 set thread context of 864 1396 bnm.exe InstallUtil.exe

description	pid	process	target process
PID 1396 set thread context of 864	1396	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\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.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\Office14\INFOPATH.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.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\COMMON~1\MICROS~1\DW\DW20.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.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\{61087~1\VCREDI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\WinMail.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.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\MICROS~1\Office14\ACCICONS.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\misc.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.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\Office14\MSTORDB.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.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\Office14\BCSSync.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.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\Adobe\READER~1.0\Reader\ACROBR~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.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 2 IoCs

Processes:

powershell.exebnm.exe

pid process

592 powershell.exe
1396 bnm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

bnm.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1396 bnm.exe
Token: SeDebugPrivilege 592 powershell.exe

pid	process
592	powershell.exe
1396	bnm.exe

description	pid	process
Token: SeDebugPrivilege	1396	bnm.exe
Token: SeDebugPrivilege	592	powershell.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

bnm.exe

description	pid	process	target process
PID 1396 wrote to memory of 592	1396	bnm.exe	powershell.exe
PID 1396 wrote to memory of 592	1396	bnm.exe	powershell.exe
PID 1396 wrote to memory of 592	1396	bnm.exe	powershell.exe
PID 1396 wrote to memory of 592	1396	bnm.exe	powershell.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe
PID 1396 wrote to memory of 864	1396	bnm.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\bnm.exe
"C:\Users\Admin\AppData\Local\Temp\bnm.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1396

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:592

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
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
PID:864

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
memory/592-60-0x000000006EDA0000-0x000000006F34B000-memory.dmp

Filesize
5.7MB

Download
memory/592-62-0x000000006EDA0000-0x000000006F34B000-memory.dmp

Filesize
5.7MB

Download
memory/592-61-0x000000006EDA0000-0x000000006F34B000-memory.dmp

Filesize
5.7MB

Download
memory/592-58-0x0000000000000000-mapping.dmp

Download
memory/864-68-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-76-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-80-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-63-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-64-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-79-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-67-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-70-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-66-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-69-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-73-0x00000000004080E4-mapping.dmp

Download
memory/864-72-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-74-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/864-77-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1396-57-0x0000000005A30000-0x0000000005AC2000-memory.dmp

Filesize
584KB

Download
memory/1396-55-0x0000000075D51000-0x0000000075D53000-memory.dmp

Filesize
8KB

Download
memory/1396-54-0x0000000000E80000-0x0000000000E8A000-memory.dmp

Filesize
40KB

Download
memory/1396-56-0x0000000005620000-0x00000000056BC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads