Overview

overview

10

Static

static

10

2024-04-18...ry.exe

windows7-x64

10

2024-04-18...ry.exe

windows10-2004-x64

10

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General

  • Target

    2024-04-18_03c6accbbd090e2cab4a6a6394907113_chaos_destroyer_wannacry

  • Size

    29KB

  • Sample

    240418-f3znjadf4s

  • MD5

    03c6accbbd090e2cab4a6a6394907113

  • SHA1

    8e92ff93b8f275ee14c6eecff681e9e0fc0bdec8

  • SHA256

    9ddbe9ab6f880f354a4429c1d1bdd4647c7202ef59ad673562b5e1bdad56cd16

  • SHA512

    4699e36a81fcdb6b142ed20e81e52989b10c920475913c01452b98aa67eb899848dbae46c1b75db5e377d1b0d5221c8fa8002ef8084788848c4943e182f01d9d

  • SSDEEP

    384:5YenjLLAQKTlZnVZdidYSD2qOVp91b7BYwHUKyP5xDGV:4PlZnVZwc9BBxcxD2

Score
10/10
chaosevasionransomwarespywarestealer

Malware Config

Targets

    • Target

      2024-04-18_03c6accbbd090e2cab4a6a6394907113_chaos_destroyer_wannacry

    • Size

      29KB

    • MD5

      03c6accbbd090e2cab4a6a6394907113

    • SHA1

      8e92ff93b8f275ee14c6eecff681e9e0fc0bdec8

    • SHA256

      9ddbe9ab6f880f354a4429c1d1bdd4647c7202ef59ad673562b5e1bdad56cd16

    • SHA512

      4699e36a81fcdb6b142ed20e81e52989b10c920475913c01452b98aa67eb899848dbae46c1b75db5e377d1b0d5221c8fa8002ef8084788848c4943e182f01d9d

    • SSDEEP

      384:5YenjLLAQKTlZnVZdidYSD2qOVp91b7BYwHUKyP5xDGV:4PlZnVZwc9BBxcxD2

    Score
    10/10
    chaosevasionransomwarespywarestealer

    • Chaos

      Ransomware family first seen in June 2021.

      ransomwarechaos

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Detects command variations typically used by ransomware

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (188) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Disables Task Manager via registry modification

      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

    • Drops desktop.ini file(s)

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

4
T1490

Resource Development

Reconnaissance

Tasks