Overview

overview

10

Static

static

10

VBNFR_.exe

windows7-x64

10

VBNFR_.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    VBNFR_

  • Size

    279KB

  • Sample

    250218-lmntzsyrbv

  • MD5

    eced539ad810466a59e0433c892ad565

  • SHA1

    8ad3bcc29bf32e6dad21db3338d8fd339d0c4b61

  • SHA256

    f9f77ed5eb391d49883b6581aa0ddf32772d6e1ad8cf401277dfaf87ca7ee4e3

  • SHA512

    583668b2f0c75f5efba8afc39d66e8e9ca16ff5eadeb495dce7e837dd5a0ecc0001065e7add10d6bafad24014722510ca2647280fc5f9f6e882fa9357937a9cb

  • SSDEEP

    6144:pcH9nKVIEcXMVUHfwpZ6DzZmSkPcb8cfaRq7+7NE:phVQXkUHfEZ6pmhkb8UaRu+7NE

Score
10/10
chaosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Targets

    • Target

      VBNFR_

    • Size

      279KB

    • MD5

      eced539ad810466a59e0433c892ad565

    • SHA1

      8ad3bcc29bf32e6dad21db3338d8fd339d0c4b61

    • SHA256

      f9f77ed5eb391d49883b6581aa0ddf32772d6e1ad8cf401277dfaf87ca7ee4e3

    • SHA512

      583668b2f0c75f5efba8afc39d66e8e9ca16ff5eadeb495dce7e837dd5a0ecc0001065e7add10d6bafad24014722510ca2647280fc5f9f6e882fa9357937a9cb

    • SSDEEP

      6144:pcH9nKVIEcXMVUHfwpZ6DzZmSkPcb8cfaRq7+7NE:phVQXkUHfEZ6pmhkb8UaRu+7NE

    Score
    10/10
    chaosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

    • Chaos

      Ransomware family first seen in June 2021.

      ransomwarechaos

    • Chaos Ransomware

    • Chaos family

      chaos

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Disables Task Manager via registry modification

      defense_evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Drops desktop.ini file(s)

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Direct Volume Access

1
T1006

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Modify Registry

2
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

3
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

4
T1490

Tasks