Overview

overview

10

Static

static

1

google chrome.vbs

windows11-21h2-x64

10

Sharing

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General

  • Target

    google chrome.vbs

  • Size

    70B

  • Sample

    240215-xxn4aaeh97

  • MD5

    a8f9c450316c75f40e9f809fb65baca5

  • SHA1

    e4a9a0ceeb77653f64469442ede3e7426762d25e

  • SHA256

    f32fd9c137672a426d418f52069fc716ecbb5d32fdb2954c1771a8d90435ff31

  • SHA512

    fc050c7b5e2e76763912e65781987023839be8e8e096bf5ce61614357ab6196cad8b57809e201e73c1666ee2f66ce36ecbf3a096825947d865bfc24819ccdde9

Score
10/10
crimsonratdharmapersistenceransomwareratspywarestealer

Malware Config

Extracted

Family

crimsonrat

C2

185.136.161.124

Targets

    • Target

      google chrome.vbs

    • Size

      70B

    • MD5

      a8f9c450316c75f40e9f809fb65baca5

    • SHA1

      e4a9a0ceeb77653f64469442ede3e7426762d25e

    • SHA256

      f32fd9c137672a426d418f52069fc716ecbb5d32fdb2954c1771a8d90435ff31

    • SHA512

      fc050c7b5e2e76763912e65781987023839be8e8e096bf5ce61614357ab6196cad8b57809e201e73c1666ee2f66ce36ecbf3a096825947d865bfc24819ccdde9

    Score
    10/10
    crimsonratdharmapersistenceransomwareratspywarestealer

    • CrimsonRAT main payload

    • CrimsonRat

      Crimson RAT is a malware linked to a Pakistani-linked threat actor.

      ratcrimsonrat

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

      ransomwaredharma

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Renames multiple (536) files with added filename extension

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

      ransomware

    • Downloads MZ/PE file

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • 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

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

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

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

2
T1490

Resource Development

Reconnaissance

Tasks