neshta | 56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

General

Target

vbc.exe
Size

894KB
MD5

66ce1420280eceebeab924165f28b7bb
SHA1

7355e30b88eb71f34fa37df9dcfcb8fc91013fd4
SHA256

56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232
SHA512

8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Score

10^/10

neshta evasion persistence spyware

Malware Config

Signatures

Detect Neshta Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/600-127-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/600-128-0x00000000004080E4-mapping.dmp	family_neshta
behavioral2/memory/600-131-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs
persistence

Modify Registry
T1112

Change Default File Association
T1042

Processes:

vbc.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" vbc.exe
Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta
Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

vbc.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	vbc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum\0	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 3180 set thread context of 600 3180 vbc.exe vbc.exe

description	pid	process	target process
PID 3180 set thread context of 600	3180	vbc.exe	vbc.exe

Drops file in Program Files directory 55 IoCs

Processes:

vbc.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~4.EXE	vbc.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOFB2B~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOBD5D~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GO664E~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOF5E2~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	vbc.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\WinMail.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\armsvc.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Temp\GUM1942.tmp\GOFB2B~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~2.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	vbc.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~3.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	vbc.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{F4220~1\VC_RED~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\1335~1.452\GOOGLE~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ACCESS~1\wordpad.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	vbc.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	vbc.exe

Drops file in Windows directory 1 IoCs

Processes:

vbc.exe

description ioc process

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

512 schtasks.exe
Modifies registry class 1 IoCs

Processes:

vbc.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" vbc.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

vbc.exe

pid process

3180 vbc.exe
3180 vbc.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

vbc.exe

description pid process

Token: SeDebugPrivilege 3180 vbc.exe

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

pid	process
512	schtasks.exe

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

pid	process
3180	vbc.exe
3180	vbc.exe

description	pid	process
Token: SeDebugPrivilege	3180	vbc.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

vbc.exe

description	pid	process	target process
PID 3180 wrote to memory of 512	3180	vbc.exe	schtasks.exe
PID 3180 wrote to memory of 512	3180	vbc.exe	schtasks.exe
PID 3180 wrote to memory of 512	3180	vbc.exe	schtasks.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe
PID 3180 wrote to memory of 600	3180	vbc.exe	vbc.exe

C:\Users\Admin\AppData\Local\Temp\vbc.exe
"C:\Users\Admin\AppData\Local\Temp\vbc.exe"
1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3180

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PaJrxje" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB35D.tmp"
2⤵
- Creates scheduled task(s)
PID:512

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
PID:600

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Scripting

Persistence

Change Default File Association

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

Scripting

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\PaJrxje.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
memory/512-126-0x0000000000000000-mapping.dmp

Download
memory/600-131-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/600-128-0x00000000004080E4-mapping.dmp

Download
memory/600-127-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3180-122-0x00000000076B0000-0x00000000076B1000-memory.dmp

Filesize
4KB

Download
memory/3180-115-0x0000000000940000-0x0000000000941000-memory.dmp

Filesize
4KB

Download
memory/3180-123-0x0000000007B30000-0x0000000007BD4000-memory.dmp

Filesize
656KB

Download
memory/3180-124-0x000000000A280000-0x000000000A300000-memory.dmp

Filesize
512KB

Download
memory/3180-125-0x000000000D470000-0x000000000D471000-memory.dmp

Filesize
4KB

Download
memory/3180-121-0x0000000005550000-0x0000000005557000-memory.dmp

Filesize
28KB

Download
memory/3180-120-0x0000000005280000-0x000000000577E000-memory.dmp

Filesize
5.0MB

Download
memory/3180-119-0x0000000002D20000-0x0000000002D21000-memory.dmp

Filesize
4KB

Download
memory/3180-118-0x0000000005320000-0x0000000005321000-memory.dmp

Filesize
4KB

Download
memory/3180-117-0x0000000005780000-0x0000000005781000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads