chaos | 2ca6754227d58abaedd803ab2b4903a5d6da9967da353446dd676822f9135fe2 | Triage

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Overview

overview

Static

static

PrivateChat.exe

windows7-x64

PrivateChat.exe

windows10-2004-x64

Sharing

General

Target

PrivateChat.exe
Size

122KB
Sample

240322-zlpxjsbc6y
MD5

a4960213baa07bad3f5762d38e68449b
SHA1

ea2db256e305d0a6f69dafd2e44047d3ad7cf553
SHA256

2ca6754227d58abaedd803ab2b4903a5d6da9967da353446dd676822f9135fe2
SHA512

b56cbe5122392d83ce30ec3c06b5b871dae46ad5b30a6451621d4097e7a966e6d0028aafb9c98acc13c12ed115cb7c684c2cc0f30b04560fe5b0c746b5b836db
SSDEEP

3072:lo/cxr9jx+VURz6e8FxD5KwvsJC79fMomKgc0Io+ENK:Zr9jxVYe8FxlLB9kzIvE

Score

10^/10

chaos evasion ransomware spyware stealer

Static task

static1

3 signatures

Behavioral task

behavioral1

Sample

PrivateChat.exe

Resource

win7-20231129-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
  
  122KB
- MD5
  
  a4960213baa07bad3f5762d38e68449b
- SHA1
  
  ea2db256e305d0a6f69dafd2e44047d3ad7cf553
- SHA256
  
  2ca6754227d58abaedd803ab2b4903a5d6da9967da353446dd676822f9135fe2
- SHA512
  
  b56cbe5122392d83ce30ec3c06b5b871dae46ad5b30a6451621d4097e7a966e6d0028aafb9c98acc13c12ed115cb7c684c2cc0f30b04560fe5b0c746b5b836db
- SSDEEP
  
  3072:lo/cxr9jx+VURz6e8FxD5KwvsJC79fMomKgc0Io+ENK:Zr9jxVYe8FxlLB9kzIvE
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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