Overview

overview

10

Static

static

1

RNSM00338.7z

windows7-x64

10

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General

  • Target

    RNSM00338.7z

  • Size

    14.8MB

  • Sample

    241111-zcr1jswbnq

  • MD5

    e9c1cb091e11486b5596436e66d9d481

  • SHA1

    0f5969fc4e0deeead63684173aee0bdd4fd9f73b

  • SHA256

    e95ea5cddb3d3b12f01e3f9b509adf737f0881d99c2e1dfcf80c55e02ac74e9c

  • SHA512

    326c201270f60e9ed6f4a1accab28cce8074b9bb6031376ca5c92333d94f00f31b9f2381c20060530ccd8fd8d78457c17d0aa0d4aa9a7ff707d0ee275b073e1d

  • SSDEEP

    393216:ZVUTV3zucfN4p0dmWTyW5xor/b8xwCYTLe:Z6Z3zDfSp05Ty8ozYSg

Score
10/10
gandcrabbackdoorcredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceprivilege_escalationpyinstallerransomwarespywarestealerupx

Malware Config

Extracted

Path

C:\$Recycle.Bin\KRAB-DECRYPT.txt

Ransom Note
---= GANDCRAB V4 =--- Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .KRAB The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. The server with your key is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- | 0. Download Tor browser - https://www.torproject.org/ | 1. Install Tor browser | 2. Open Tor Browser | 3. Open link in TOR browser: http://gandcrabmfe6mnef.onion/9666d3472d3d855f | 4. Follow the instructions on this page ---------------------------------------------------------------------------------------- On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free. ATTENTION! IN ORDER TO PREVENT DATA DAMAGE: * DO NOT MODIFY ENCRYPTED FILES * DO NOT CHANGE DATA BELOW ---BEGIN GANDCRAB KEY--- lAQAAJc3wDOkNr2ZKmQDkJ0GALOyAfHftd1fbMTR/b+E66uMrTk8t9pjpWhMRUP33YK0iYYCVEOaGAtQsZ6NLvbfJk2UK0eqTmAtgzED8FuyYwPT5zHul/LvI5qw5wkxvfeu0utWOgQuTSLVT5dUBsGWSf4HmIpRc+cwHiM6N7C4pISTK8Yv9IUeydtoUPRmRhlf/+Db3M1IreFU7leR+ssUbxur/S+G99HVEVGLBmwUCT5zKJX3Y4x2tjnTrDKwfy0/5mDGrqc2/iMiHTn9tcaWn+GObmRQT45pG3V0FnjR9BN7wUKYahifDMMpXZV16TD48eHY1uJrVPPk48hrrq2utpOSJPZ0lf8X4h3dOnLVhklPfR5xZbXGRWujj0+nCgD15gmmlj7a1lgSgth7zvbMaYMH2Rp0iCapzz8uf9NveneVpeIMuPt1CWjBPxcein4GlWkrirGZ3qEngY9aUgffPMMZlN6wPDUlijYqvkFTcKngGqSxy04auUB0dYUgFjtHXfyToZCYnhXgWJ76Gh6iTueuwFhuTzmGfvE0BRpq34klex8yUS2vbiuJmLkih3OZPfA0e6g53IyTGRhfV39jSkqrWy6ErJiBqCqlkfwL/bEh5YMV2Kc1W+I9ajjQGwP983oZZGZie0vLewmqo0Fv+YAIXH/+H96R2gRd/QHY8uUfMMtJI6CIIZnnxwPPHAfKdAe78agQvq03ndsvmBgqOV+BEFPrZDDLxwyneuV4NOIKJNWL9DNldGA9jLLLD1PnsToQj7Om7sag1zIXqNFSCTpp14ZQ32IOzGk7R/OO69uqYqur3G3apW27CiE4wHlO5cuPuQeZZ3cHJZUc0q1DfXI36dTgYWF6wd3kWFpxFiy2b62B8Ks1Wlx1utZdQgk6o/WGMsP7VZoiWWXG4LqQRTx48Gs/tRH4Xgvu+ZINnb6MR+KP/pzpAKQWg72+xt8K68E8O3gV74EE8Zpwi7sGjFjrIKknkclXNv6vOchVa/mTOFdCCdoJzUVZbStzbTv7+wpf3KxIcCpRQz/bLM4+ZX+K8YpDzOPOmz3O9dWYeavBo0a+yETR90cd80jZP+iG8xpLW0y8fuz39cDsUIKnt1QiO3TofCBGwrvfepgiUaV2ZtBQ/oqKoyw0Z6gWNsQX2u9YUs7jKervpGwh2+2sLA775p8qrebL4M1E24MvplJ863q118hnhL5Tg476n2lAXRn4IbST9kJ5eSykHrScBAtuQ8ARqD6BFbFGkORRCSmuq1JdRX8gAmH7FiVsdkNicKb3BhpJ9tYOcxfsewq2Bhy/pijT1CTFOlSe5lg+juJHlfdDhAiY3gAFqcOI3PdghL0H7fKkj7qgEMb9x4trfo6b5r7eNJ2g8tukDC1afzsXrWWZsMUQMDrSAtvutPluuAHtD6uKim6zChTFFNbGoCgQwsIasi7pjl+m0/YfJzn8d6sEbnfUJLBwzyW82GBI7UpIGOJcox8weNQgKd4G39plS60pihurv5p74mRAPq1vbQxD86j3gSI1j6UEuAGZcIqnWtumX/0ZeZPi937BjH5oY6fMYXI6tuYXuIqAMp/GgvsPgyXfKztl+XPgWu39lpOalicmLejlqMkHyzJWFCzlGXssa50U3vPNmhL1JCkM4wSIz9e7c3dawoTiviYhgxkvhO1hQNvFVsXa6yMl/VjeGBB9aKT4E/cRCfFGjOrjcthNk36VHlUSUf8ivkXINeQnz2V5BA3v0QwnhMxrGsUGCgyIPgFX9+2e3efuqL3tnbQ2uncj2yqUDF8mLQHCxXytLmPHz17FW5H1BY0jtl7YSNepYO2hEXdCmAk8qr+8hGSNw2EdKJLkSQh3xSZ0/mR0RlM8Pxve1PKBLsTEjsjxcJrFeR4wGSMxfEbduVimDyySCLIHI1tCmRI9dMFlS6uP1joC/oqhr3nNoVt1kVNq3ne6AoyMrN5GqbC4c55o0i7C831YdECEqRB87KiCDcTLVWe1eD5ipXaOK0x+PLgoIR/4TGgTA6AayMjpKr/x8wsrMt0nY++WX5SF6y5YVeBrqy0gTuHdE92V9si2OYP69EUCoQqRmyUWC23qbdZ7beoc1CCHPvv8D/7TZ1+myx8eY0CGZ/SSuUyVkDjFCuWSDhVeGf3BUEuw6rOvluwZufWFvx6+CLbpiyUzFeEiwt4XOkVUag+UqB/Il9yV+V9mn9bQfBQlkcLct6CtEGmyuAPrjiQa60NFS+t/VHVzTHADsWA= ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/9666d3472d3d855f

Targets

    • Target

      RNSM00338.7z

    • Size

      14.8MB

    • MD5

      e9c1cb091e11486b5596436e66d9d481

    • SHA1

      0f5969fc4e0deeead63684173aee0bdd4fd9f73b

    • SHA256

      e95ea5cddb3d3b12f01e3f9b509adf737f0881d99c2e1dfcf80c55e02ac74e9c

    • SHA512

      326c201270f60e9ed6f4a1accab28cce8074b9bb6031376ca5c92333d94f00f31b9f2381c20060530ccd8fd8d78457c17d0aa0d4aa9a7ff707d0ee275b073e1d

    • SSDEEP

      393216:ZVUTV3zucfN4p0dmWTyW5xor/b8xwCYTLe:Z6Z3zDfSp05Ty8ozYSg

    Score
    10/10
    gandcrabbackdoorcredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceprivilege_escalationpyinstallerransomwarespywarestealerupx

    • Gandcrab

      Gandcrab is a Trojan horse that encrypts files on a computer.

      ransomwarebackdoorgandcrab

    • Gandcrab family

      gandcrab

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Renames multiple (304) files with added filename extension

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

      ransomware

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

      persistence

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

      credential_accessstealer

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

      persistenceprivilege_escalation

    • 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

    • Enumerates connected drives

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

    • Modifies WinLogon

      persistence

    • Hide Artifacts: Hidden Users

      defense_evasion

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

2
T1547

Active Setup

1
T1547.014

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Active Setup

1
T1547.014

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

Component Object Model Hijacking

1
T1546.015

Defense Evasion

Hide Artifacts

1
T1564

Hidden Users

1
T1564.002

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Modify Registry

3
T1112

Credential Access

Credentials from Password Stores

2
T1555

Credentials from Web Browsers

1
T1555.003

Windows Credential Manager

1
T1555.004

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

Remote System Discovery

1
T1018

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

1
T1490

Tasks