Overview

overview

10

Static

static

4be53abbc3...d2.exe

windows7_x64

10

4be53abbc3...d2.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    16-06-2021 14:37

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General

  • Target

    4be53abbc3663773fba73cc579d2320fd605fc5e9526004cb16ea6c0188193d2.exe

  • Size

    168KB

  • MD5

    024e1a53342da10feb5355791b54fea1

  • SHA1

    166903446183914166529278790555b6a9f455b9

  • SHA256

    4be53abbc3663773fba73cc579d2320fd605fc5e9526004cb16ea6c0188193d2

  • SHA512

    5dacd247d46387f6b4ac47b28c14857b3f8b0a610460d9d75aa99b554285b8e601e6dda7eaee81c4b7fb826884d1781c2ed47c962db703e1423ad4845f6b3c87

Score
10/10
gandcrabbackdoorransomwarespywarestealer

Malware Config

Extracted

Path

C:\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/c17ad45d64879341 | 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--- 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 ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/c17ad45d64879341

Signatures

  • GandCrab Payload 1 IoCs
  • Gandcrab

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

    ransomwarebackdoorgandcrab
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Drops file in Program Files directory 45 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4be53abbc3663773fba73cc579d2320fd605fc5e9526004cb16ea6c0188193d2.exe
    "C:\Users\Admin\AppData\Local\Temp\4be53abbc3663773fba73cc579d2320fd605fc5e9526004cb16ea6c0188193d2.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1348
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
        PID:1544
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
        PID:1116

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Persistence

      Privilege Escalation

      Defense Evasion

      File Deletion

      1
      T1107

      Install Root Certificate

      1
      T1130

      Modify Registry

      1
      T1112

      Credential Access

      Credentials in Files

      1
      T1081

      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

      Impact

      Inhibit System Recovery

      1
      T1490

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1348-60-0x00000000762C1000-0x00000000762C3000-memory.dmp
        Filesize

        8KB

        Download
      • memory/1348-61-0x0000000000400000-0x0000000000430000-memory.dmp
        Filesize

        192KB

        Download
      • memory/1544-62-0x0000000000000000-mapping.dmp
        Download