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
behavioral1/memory/1556-67-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/1556-68-0x00000000004080E4-mapping.dmp	family_neshta
behavioral1/memory/1556-70-0x0000000000400000-0x000000000041B000-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

Loads dropped DLL 4 IoCs

Processes:

vbc.exe

pid process

1556 vbc.exe
1556 vbc.exe
1556 vbc.exe
1556 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
1556	vbc.exe
1556	vbc.exe
1556	vbc.exe
1556	vbc.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 1976 set thread context of 1556 1976 vbc.exe vbc.exe

description	pid	process	target process
PID 1976 set thread context of 1556	1976	vbc.exe	vbc.exe

Drops file in Program Files directory 64 IoCs

Processes:

vbc.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\OIS.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.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~2\COMMON~1\MICROS~1\DW\DW20.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI4223~1\sidebar.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\misc.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.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\MICROS~1\Office14\PPTICO.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.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\MICROS~1\Office14\ACCICONS.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.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\WINDOW~1\WinMail.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DWTRIG20.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\MICROS~1\Office14\CNFNOT32.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTEM.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~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\wmplayer.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\Setup.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\MICROS~1\Office14\IECONT~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\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.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\INTERN~1\ieinstal.exe	vbc.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	vbc.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	vbc.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	vbc.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ACROBR~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

1528 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 4 IoCs

Processes:

vbc.exe

pid process

1976 vbc.exe
1976 vbc.exe
1976 vbc.exe
1976 vbc.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

vbc.exe

description pid process

Token: SeDebugPrivilege 1976 vbc.exe

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

pid	process
1528	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
1976	vbc.exe
1976	vbc.exe
1976	vbc.exe
1976	vbc.exe

description	pid	process
Token: SeDebugPrivilege	1976	vbc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

vbc.exe

description	pid	process	target process
PID 1976 wrote to memory of 1528	1976	vbc.exe	schtasks.exe
PID 1976 wrote to memory of 1528	1976	vbc.exe	schtasks.exe
PID 1976 wrote to memory of 1528	1976	vbc.exe	schtasks.exe
PID 1976 wrote to memory of 1528	1976	vbc.exe	schtasks.exe
PID 1976 wrote to memory of 1420	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1420	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1420	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1420	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	vbc.exe	vbc.exe
PID 1976 wrote to memory of 1556	1976	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:1976

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PaJrxje" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8E1B.tmp"
2⤵
- Creates scheduled task(s)
PID:1528

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
PID:1420

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
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
PID:1556

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

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Downloads

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

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

Download Submit
\PROGRA~2\Google\Temp\GUMFBCB.tmp\GOFB2B~1.EXE
MD5
583ff3367e050c4d62bc03516473b40a

SHA1
6aa1d26352b78310e711884829c35a69ed1bf0f9

SHA256
6b63f8dd47d8b3baa71b6cd205d428861b96bf09cf479071e75ddd23f97c0146

SHA512
e9bdd5cc2e29db48cc524488fbadb08e808f17f6e18fa595cfebae229c94f2547079e52a2ada214169577b89b2ffbef424729cd90acdea3774f5c76aec192be0

Download Submit
\PROGRA~2\Google\Update\1335~1.452\GOFB2B~1.EXE
MD5
583ff3367e050c4d62bc03516473b40a

SHA1
6aa1d26352b78310e711884829c35a69ed1bf0f9

SHA256
6b63f8dd47d8b3baa71b6cd205d428861b96bf09cf479071e75ddd23f97c0146

SHA512
e9bdd5cc2e29db48cc524488fbadb08e808f17f6e18fa595cfebae229c94f2547079e52a2ada214169577b89b2ffbef424729cd90acdea3774f5c76aec192be0

Download Submit
\Users\Admin\AppData\Roaming\PaJrxje.exe
MD5
66ce1420280eceebeab924165f28b7bb

SHA1
7355e30b88eb71f34fa37df9dcfcb8fc91013fd4

SHA256
56331fa6c35d48c153e5004cb8574c36e2c16f3bb339e53549dc28ec7ad0f232

SHA512
8fed800ba457321903af29448b6c31b017393572f32b61f0c9fb4c028375e4937356348e6bbcdf7a2ec37484bd9e3cecfcb84d1212dfb45e2c6a4fe3fa026369

Download Submit
memory/1528-66-0x0000000000000000-mapping.dmp

Download
memory/1556-70-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1556-68-0x00000000004080E4-mapping.dmp

Download
memory/1556-69-0x0000000075DA1000-0x0000000075DA3000-memory.dmp

Filesize
8KB

Download
memory/1556-67-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1976-60-0x0000000000820000-0x0000000000821000-memory.dmp

Filesize
4KB

Download
memory/1976-65-0x00000000056F0000-0x0000000005770000-memory.dmp

Filesize
512KB

Download
memory/1976-64-0x0000000005380000-0x0000000005424000-memory.dmp

Filesize
656KB

Download
memory/1976-63-0x0000000000730000-0x0000000000737000-memory.dmp

Filesize
28KB

Download
memory/1976-62-0x0000000004DF0000-0x0000000004DF1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads