Overview

overview

10

Static

static

10

Cov29Cry.exe

windows7-x64

10

Cov29Cry.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Cov29Cry.exe.death

  • Size

    103KB

  • Sample

    250211-h52a9azlfk

  • MD5

    8bcd083e16af6c15e14520d5a0bd7e6a

  • SHA1

    c4d2f35d1fdb295db887f31bbc9237ac9263d782

  • SHA256

    b4f78ff66dc3f5f8ddd694166e6b596d533830792f9b5f1634d3f5f17d6a884a

  • SHA512

    35999577be0626b50eeab65b493d48af2ab42b699f7241d2780647bf7d72069216d99f5f708337a109e79b9c9229613b8341f44c6d96245fd1f3ac9f05814d6a

  • SSDEEP

    3072:H3kyzZr9SE9RmXjSPjXvyT2cQf8WhjTRqvM:N1r9SELZDv25iVly

Score
10/10
chaosdefense_evasiondiscoveryevasionexecutionimpactransomwarespywarestealer

Malware Config

Targets

    • Target

      Cov29Cry.exe.death

    • Size

      103KB

    • MD5

      8bcd083e16af6c15e14520d5a0bd7e6a

    • SHA1

      c4d2f35d1fdb295db887f31bbc9237ac9263d782

    • SHA256

      b4f78ff66dc3f5f8ddd694166e6b596d533830792f9b5f1634d3f5f17d6a884a

    • SHA512

      35999577be0626b50eeab65b493d48af2ab42b699f7241d2780647bf7d72069216d99f5f708337a109e79b9c9229613b8341f44c6d96245fd1f3ac9f05814d6a

    • SSDEEP

      3072:H3kyzZr9SE9RmXjSPjXvyT2cQf8WhjTRqvM:N1r9SELZDv25iVly

    Score
    10/10
    chaosdefense_evasionevasionexecutionimpactransomwarespywarestealerdiscovery

    • 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

    • Downloads MZ/PE file

    • 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)

    • 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

Privilege Escalation

Defense Evasion

Direct Volume Access

1
T1006

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Modify Registry

1
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

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

4
T1490

Tasks