Overview

overview

10

Static

static

10

872bf2c276...le.exe

windows10_x64

10

Analysis

  • max time kernel
    91s
  • max time network
    100s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    21-10-2021 09:16

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General

  • Target

    872bf2c276fe3242513c2ed1b254a5ab3c0dea273dde944c05b711697811753f.sample.exe

  • Size

    168KB

  • MD5

    700a4f7ed40dd9ac29891c2ec3d4bef7

  • SHA1

    1546e3bbe9eb3e6b185097226bb758d98a207429

  • SHA256

    872bf2c276fe3242513c2ed1b254a5ab3c0dea273dde944c05b711697811753f

  • SHA512

    1b615297f445eb4c3909e46191834450191b6e9716a83c380a02db6566dd96431f6e2271c01508d3f271af0b4fbfff31b485e1fc6bf952a4b2177aa41fb65c0a

Score
10/10
gandcrabbackdoorransomwarespywarestealersuricata

Malware Config

Extracted

Path

C:\ZVRYIONLNM-DECRYPT.txt

Ransom Note
---= GANDCRAB V5.0.1 =--- Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .ZVRYIONLNM 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/53559f29a53d0f6d | 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--- wfKD6iudumBkmpL8IRr4U4exEVaoOXLtwDwmOrT1y1YWvOiWMx5GYaRdvZZdToZRtXYL7nJWobfbTGuHhh5qBJzzs9MC7736UkGSDDniUJJG8/LFF//kmGmoAZAGLo2j5/wd2UrxMJK+iqKhTkS3ArgAxrZOOOiXrbnhbWMkLHQnbYuWlMClYZxYU6SDxpopRo5r292AV1KIZBZV4APBuUHcKSIr2MWMI0O1MKIP2IpKLE2TS5wNmoQoAHZdP6U/VvqF1shzlzbajc1AHXg7l8xnT91gCFUxMg7ADMEr7316SnTFUg/DkeItL9jgqZqn87qt5+hi6rEkkUrB6eL1/2M2EutyGttYOlqFBnPtuxGOEY0b9Scf4qq4MaaXY7JyAYzW2Q+irpQZTWgqalO4JIUJo5FhwNYoDBPInKY+DO5AAL2fiGE1g65rIQ3vxA5KyA7wZi/pDRFN3uPLaOb91wsZOHQfRkOKPzmU1gPgG39UmRzflSz0QUpnmbI4lomwvnJMVc3pJTerfEocccBmP2hNgn9IQ3DCzaYTErDtaEjxBdZMM5H4HskOLb+SRYUP ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/53559f29a53d0f6d

Signatures

  • Gandcrab

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

    ransomwarebackdoorgandcrab
  • suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity

    suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity

    suricata
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 4 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 23 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 2 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\872bf2c276fe3242513c2ed1b254a5ab3c0dea273dde944c05b711697811753f.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\872bf2c276fe3242513c2ed1b254a5ab3c0dea273dde944c05b711697811753f.sample.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
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2276
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2128
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:608

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

1
T1107

Modify Registry

2
T1112

Install Root Certificate

1
T1130

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

Defacement

1
T1491

Replay Monitor

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Downloads

  • memory/2128-115-0x0000000000000000-mapping.dmp
    Download