Overview

overview

10

Static

static

10

sample.exe

windows7_x64

10

sample.exe

windows10-2004_x64

10

Sharing

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General

  • Target
    4089e7b0a0469bd5877c830f962f8243dc1311349271e45e9b15cd6d97e0a2ea.bin.sample.gz
  • Size 647KB
  • Sample220513-twhy4ahcb8
  • SHA256 f68fcf611ee0ae23db0159621daa088c0a7605169df99272fa7dd9036c396124
  • MD5 SHA1 SHA512
Score
10/10
chaosevasionransomwarespywarestealer

Malware Config

Targets

    • Target
      sample
    • Size 1.4MB
    • SHA256 4089e7b0a0469bd5877c830f962f8243dc1311349271e45e9b15cd6d97e0a2ea
    • MD5 SHA1 SHA512
    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

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Disables Task Manager via registry modification

      evasion

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Checks computer location settings

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

    • Drops startup file

    • 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 v6

Tasks