Overview

overview

10

Static

static

2019-05-22...re.exe

windows10_x64

10

Analysis

  • max time kernel
    129s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    20-10-2021 09:57

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General

  • Target

    2019-05-22-Rig-EK-payload-Gandcrab-ransomware.exe

  • Size

    656KB

  • MD5

    538d23ef01426d1157fa1137471a5cf7

  • SHA1

    ab553df2bb4f7f8d98cc39ac773aaaa1c7ca110f

  • SHA256

    af8e74d00babaae01b6f3b137cff7b6a6951456c66ffa95122695dad6c7b41a9

  • SHA512

    9df42f3c39a8982bc77c82010509c3e98cc56c2d71c6f5f20274c0fbde17c58607d9579877983e2239d30fd60be14402b2b9e3d9295168a3cc8d31ac8f4a1111

Score
10/10
gandcrabbackdoorransomwarespywarestealer

Malware Config

Extracted

Path

C:\KSPREIW-MANUAL.txt

Family

gandcrab

Ransom Note
---= GANDCRAB V5.2 =--- ***********************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*********************** *****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE ARE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .KSPREIW 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/9dd5ac38f623035 | 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/9dd5ac38f623035

Signatures

  • 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 14 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Drops startup file 2 IoCs
  • 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.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 25 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.

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2019-05-22-Rig-EK-payload-Gandcrab-ransomware.exe
    "C:\Users\Admin\AppData\Local\Temp\2019-05-22-Rig-EK-payload-Gandcrab-ransomware.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2584
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1808
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:68
  • \??\c:\windows\system32\svchost.exe
    c:\windows\system32\svchost.exe -k networkservice -s TapiSrv
    1⤵
      PID:2244
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2412
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\KSPREIW-MANUAL.txt
      1⤵
        PID:1224

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Persistence

      Privilege Escalation

      Defense Evasion

      File Deletion

      2
      T1107

      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

      2
      T1490

      Defacement

      1
      T1491

      Replay Monitor

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      Downloads

      • C:\Users\Admin\Desktop\KSPREIW-MANUAL.txt
        MD5

        bfdac2e89d6d76a40416770da4b2399a

        SHA1

        18825238f8f5f59d91c066f212d20690fb22658f

        SHA256

        dc1a103184deb9fcff751b3956dfde357fb0b8668d64846df22aeb686b938b75

        SHA512

        81b195c4d465c72f0386b28b1388f9896a666b0c9d865a6ccb8a0bf660cc52c9c566782c41097a69dbbac341b6f1a49a675708173a6a1e005a89883d997881ec

        Download Submit
      • memory/68-119-0x0000000000000000-mapping.dmp
        Download
      • memory/1808-118-0x0000000000000000-mapping.dmp
        Download
      • memory/2584-115-0x0000000000730000-0x0000000000740000-memory.dmp
        Filesize

        64KB

        Download
      • memory/2584-116-0x0000000002260000-0x0000000002261000-memory.dmp
        Filesize

        4KB

        Download
      • memory/2584-117-0x0000000000400000-0x00000000004A9000-memory.dmp
        Filesize

        676KB

        Download