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Overview

overview

Static

static

VirusShare...4a.exe

windows7-x64

VirusShare...4a.exe

windows10-2004-x64

Sharing

General

Target

VirusShare_368c01b181eda42d717feeff4291bb4a
Size

45KB
Sample

240204-qbtnbaaca4
MD5

368c01b181eda42d717feeff4291bb4a
SHA1

d6a6df6a094b9d76a16c1c9d5ce16b9124ee50b1
SHA256

1a123a6b7cd4740e829d2e5178c718549d7d17bc7bb348e60fa7be6e1c683d72
SHA512

8c45f2bd544224de18c46e3ff90b6f75eca41d66be1636a3845e259df9618c33bab2120ee6f866edc4a490039729920c9708e5f600594e1b3a1ebacb17b904d3
SSDEEP

768:it4VZ1p/ija+1ImUqJsbEYY2Ixs4RhYuX5tOH2AFOmDDRLoJQ7zqAU6FbMPwl:Y4VZPqibA26sMK2GncKmA5

Score

10^/10

bootkit persistence ransomware

Static task

static1

2 signatures

Behavioral task

behavioral1

Sample

VirusShare_368c01b181eda42d717feeff4291bb4a.exe

Resource

win7-20231215-en

bootkit persistence ransomware

windows7-x64

10 signatures

150 seconds

Behavioral task

behavioral2

Sample

VirusShare_368c01b181eda42d717feeff4291bb4a.exe

Resource

win10v2004-20231222-en

bootkit persistence ransomware

windows10-2004-x64

12 signatures

150 seconds

Malware Config

Targets

- Target
  
  VirusShare_368c01b181eda42d717feeff4291bb4a
- Size
  
  45KB
- MD5
  
  368c01b181eda42d717feeff4291bb4a
- SHA1
  
  d6a6df6a094b9d76a16c1c9d5ce16b9124ee50b1
- SHA256
  
  1a123a6b7cd4740e829d2e5178c718549d7d17bc7bb348e60fa7be6e1c683d72
- SHA512
  
  8c45f2bd544224de18c46e3ff90b6f75eca41d66be1636a3845e259df9618c33bab2120ee6f866edc4a490039729920c9708e5f600594e1b3a1ebacb17b904d3
- SSDEEP
  
  768:it4VZ1p/ija+1ImUqJsbEYY2Ixs4RhYuX5tOH2AFOmDDRLoJQ7zqAU6FbMPwl:Y4VZPqibA26sMK2GncKmA5
Score

9^/10

bootkit persistence ransomware
- Detects ransomware indicator
- Renames multiple (95) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

Bootkit

Privilege Escalation

Defense Evasion

Pre-OS Boot

Bootkit

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

static1

behavioral1

bootkitpersistenceransomware

behavioral2

bootkitpersistenceransomware

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