Overview

overview

10

Static

static

10

Crypter.exe

windows10-2004-x64

10

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General

  • Target

    Crypter.exe

  • Size

    456KB

  • Sample

    250402-vlrnxstks2

  • MD5

    d8952049425e2fb6f5f78f492c64c9fe

  • SHA1

    d09211521898be00535f2cfcb1ecc6fe26e2bb70

  • SHA256

    5be54b2faca1f95a16d0455bda8abae0a4894c2d54048098162011bd7f415985

  • SHA512

    7c887f1962962a22bd604b9f063cb27099c8e681b62b6220dc12694cea89a956a2c2d7a92aed7423b51ea325cc7a17707c7876cec6955c55819e47e62dae812b

  • SSDEEP

    12288:sE0mgj/WQfb48yX/yPqYZjSwBjx9QkTzNMoS7LUKUlVlgvAIsfO8Z9IHzNeC5UaK:cdVEH

Score
10/10
chaosdefense_evasionevasionexecutionimpactpersistenceransomwarespywarestealer

Malware Config

Targets

    • Target

      Crypter.exe

    • Size

      456KB

    • MD5

      d8952049425e2fb6f5f78f492c64c9fe

    • SHA1

      d09211521898be00535f2cfcb1ecc6fe26e2bb70

    • SHA256

      5be54b2faca1f95a16d0455bda8abae0a4894c2d54048098162011bd7f415985

    • SHA512

      7c887f1962962a22bd604b9f063cb27099c8e681b62b6220dc12694cea89a956a2c2d7a92aed7423b51ea325cc7a17707c7876cec6955c55819e47e62dae812b

    • SSDEEP

      12288:sE0mgj/WQfb48yX/yPqYZjSwBjx9QkTzNMoS7LUKUlVlgvAIsfO8Z9IHzNeC5UaK:cdVEH

    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)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1

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

2
T1120

Query Registry

4
T1012

System Information Discovery

4
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

4
T1490

Tasks