chaos | 19c393a4787d325984d850d8f02db1f302819b808952f72c332251d5d95f7c32 | Triage

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Overview

overview

Static

static

PrivateChat.exe

windows7-x64

PrivateChat.exe

windows10-2004-x64

Sharing

General

Target

PrivateChat.exe
Size

120KB
Sample

240322-z6x4naha63
MD5

5d4c5f3457c4487fe26df768ed8f3d2b
SHA1

f5f3df7d11e06dc158ac8183a8bde5895f8ea251
SHA256

19c393a4787d325984d850d8f02db1f302819b808952f72c332251d5d95f7c32
SHA512

793b8917ad068b77bcc7d771a28069ac432cfb441438e1a1f159fe94cbb2aa550fb2cc47d7354e30275ce2df402774902c987ad9b9be900f3748281f13a30e9a
SSDEEP

3072:QoIcFr9LvJxaJ3e6ua0g0qcB2f/u80kcmU/C7eJBz4Jtu:dr9LvkbOqguxU6f4

Score

10^/10

chaos evasion ransomware spyware stealer

Static task

static1

3 signatures

Behavioral task

behavioral1

Sample

PrivateChat.exe

Resource

win7-20240221-en

chaos evasion ransomware spyware stealer

windows7-x64

19 signatures

150 seconds

Behavioral task

behavioral2

Sample

PrivateChat.exe

Resource

win10v2004-20240226-en

chaos evasion ransomware spyware stealer

windows10-2004-x64

23 signatures

150 seconds

Malware Config

Targets

- Target
  
  PrivateChat.exe
- Size
  
  120KB
- MD5
  
  5d4c5f3457c4487fe26df768ed8f3d2b
- SHA1
  
  f5f3df7d11e06dc158ac8183a8bde5895f8ea251
- SHA256
  
  19c393a4787d325984d850d8f02db1f302819b808952f72c332251d5d95f7c32
- SHA512
  
  793b8917ad068b77bcc7d771a28069ac432cfb441438e1a1f159fe94cbb2aa550fb2cc47d7354e30275ce2df402774902c987ad9b9be900f3748281f13a30e9a
- SSDEEP
  
  3072:QoIcFr9LvJxaJ3e6ua0g0qcB2f/u80kcmU/C7eJBz4Jtu:dr9LvkbOqguxU6f4
Score

10^/10

chaos evasion ransomware spyware stealer
- Chaos
  Ransomware family first seen in June 2021.
  ransomware chaos
- Chaos Ransomware
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Modifies boot configuration data using bcdedit
  ransomware evasion
- Deletes backup catalog
  Uses wbadmin.exe to inhibit system recovery.
  ransomware
- 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.
  spyware stealer
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
  ransomware
behavioral1 behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

File Deletion

Modify Registry

Credential Access

Unsecured Credentials

Credentials In Files

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Data from Local System

Command and Control

Exfiltration

Impact

Defacement

Inhibit System Recovery

Tasks

static1

behavioral1

chaosevasionransomwarespywarestealer

behavioral2

chaosevasionransomwarespywarestealer

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