c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380

Analysis

max time kernel
157s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2022, 03:32

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General

Target

c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380.exe
Size

1.1MB
MD5

2652dd783aca1063b48176abc46485a2
SHA1

91b32e8e40d49567d1709409af27d6121de005dd
SHA256

c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380
SHA512

aedd332ec11e36f8978bd1bd3b482b5d552310be41a4e6673fd9499dbd6184808eb3573105feef0559dfec07f26a2e284c98b40c6cba83b4b87bd7287d45ea0b
SSDEEP

24576:HaIo2sd8FMl5nzxVHZ+usYzNuZN+dPU+9Q0xURu:Hbogin9SKs+9+Ru

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
5048	VioDrv.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	VioDrv.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VioDrv = "C:\\Windows\\VioDrv.exe"	VioDrv.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\VioDrv.exe	c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380.exe
File created	C:\Windows\VioDrv.dat	VioDrv.exe
File opened for modification	C:\Windows\VioDrv.dat	VioDrv.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1588 wrote to memory of 5048	1588	c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380.exe	80
PID 1588 wrote to memory of 5048	1588	c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380.exe	80
PID 1588 wrote to memory of 5048	1588	c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380.exe	80

C:\Users\Admin\AppData\Local\Temp\c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380.exe
"C:\Users\Admin\AppData\Local\Temp\c0bbba0b65a003daa414c9ed9d07ecc853446223c7f8fe72bb6b7bcbe8018380.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1588
- C:\Windows\VioDrv.exe
  "C:\Windows\VioDrv.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  PID:5048

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\VioDrv.exe

Filesize
557KB

MD5
7db18ce102a94fc1dcec80f01542b413

SHA1
d0ce65e2031c198a62ba68a05c4bafeee7ba7f0c

SHA256
7f51c43a4ab8c95ceea6011f8fa6ae6df9529ec08d4344430c323815a57ef4bb

SHA512
01f3c26784e2603fa1443f18539a75ed177a5868554b0fb43d027764ab3078cb77457b54008102e052c1bd419b7df9e2a2ad73c69a4eacf2e4b26da53d33e240

Download Submit
C:\Windows\VioDrv.exe

Filesize
557KB

MD5
7db18ce102a94fc1dcec80f01542b413

SHA1
d0ce65e2031c198a62ba68a05c4bafeee7ba7f0c

SHA256
7f51c43a4ab8c95ceea6011f8fa6ae6df9529ec08d4344430c323815a57ef4bb

SHA512
01f3c26784e2603fa1443f18539a75ed177a5868554b0fb43d027764ab3078cb77457b54008102e052c1bd419b7df9e2a2ad73c69a4eacf2e4b26da53d33e240

Download Submit