Overview

overview

10

Static

static

1

URLScan

urlscan

1

https://learn.micros...

windows10-ltsc_2021-x64

10

Resubmissions

28/03/2025, 07:47

250328-jm2pqsvp15 10

28/03/2025, 07:40

250328-jhpjlstshv 10

28/03/2025, 07:33

250328-jdsqgatscz 10

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General

  • Target

    https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer

  • Sample

    250328-jdsqgatscz

Score
10/10
chimeradiscoverypersistenceransomwarespywarestealer

Malware Config

Targets

    • Target

      https://learn.microsoft.com/en-us/sysinternals/downloads/process-explorer

    Score
    10/10
    chimeradiscoverypersistenceransomwarespywarestealer

    • Chimera

      Ransomware which infects local and network files, often distributed via Dropbox links.

      ransomwarechimera

    • Chimera Ransomware Loader DLL

      Drops/unpacks executable file which resembles Chimera's Loader.dll.

      ransomware

    • Chimera family

      chimera

    • Renames multiple (3288) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets service image path in registry

      persistence

    • 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)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

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

Browser Information Discovery

1
T1217

Peripheral Device Discovery

2
T1120

Query Registry

6
T1012

System Information Discovery

6
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Tasks