chaos | 3bac13b433b453c3db0f70f4e3ce07a2c1108a0892bac358a1d1b38a30e1cd08 | Triage

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Overview

overview

Static

static

rincrypt.exe

windows7-x64

rincrypt.exe

windows10-2004-x64

Sharing

General

Target

rincrypt.exe
Size

165KB
Sample

240430-l7fzwahf73
MD5

9f99b9ecdb90b991aa0eb5884523185f
SHA1

5d99a9343765bb758f8ee85585dd376ec190c6e4
SHA256

3bac13b433b453c3db0f70f4e3ce07a2c1108a0892bac358a1d1b38a30e1cd08
SHA512

5c7a8f872bd0c5800e60e164eb605650eac06a6fc07322ab78274cd9c024e08c7cb8797580ecfb9067efd0ab6a1117e5c23fd78b4e6256ccecea4997f0859ed5
SSDEEP

3072:36oLuur9P2Wr6QhzaNpatUPp0hmHzs/0ui8N/Wm9BsB85:dr9P2Wrb2R0Ya/28

Score

10^/10

chaos evasion ransomware spyware stealer

Static task

static1

3 signatures

Behavioral task

behavioral1

Sample

rincrypt.exe

Resource

win7-20240220-en

chaos evasion ransomware spyware stealer

windows7-x64

18 signatures

150 seconds

Behavioral task

behavioral2

Sample

rincrypt.exe

Resource

win10v2004-20240419-en

chaos evasion ransomware spyware stealer

windows10-2004-x64

21 signatures

150 seconds

Malware Config

Targets

- Target
  
  rincrypt.exe
- Size
  
  165KB
- MD5
  
  9f99b9ecdb90b991aa0eb5884523185f
- SHA1
  
  5d99a9343765bb758f8ee85585dd376ec190c6e4
- SHA256
  
  3bac13b433b453c3db0f70f4e3ce07a2c1108a0892bac358a1d1b38a30e1cd08
- SHA512
  
  5c7a8f872bd0c5800e60e164eb605650eac06a6fc07322ab78274cd9c024e08c7cb8797580ecfb9067efd0ab6a1117e5c23fd78b4e6256ccecea4997f0859ed5
- SSDEEP
  
  3072:36oLuur9P2Wr6QhzaNpatUPp0hmHzs/0ui8N/Wm9BsB85:dr9P2Wrb2R0Ya/28
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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