Overview

overview

10

Static

static

3619fec406...4d.exe

windows7_x64

10

3619fec406...4d.exe

windows10-2004_x64

3

Analysis

  • max time kernel
    151s
  • max time network
    175s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    26-06-2022 03:42

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General

  • Target

    3619fec40668b5c713499b9c451e428fb1c022bda4a24dd9fc3f62e0cc017b4d.exe

  • Size

    175KB

  • MD5

    5fa8ad9d232314d906437a9bcaa4c66a

  • SHA1

    e7e4a72fb5924051a41155044f03f55aaa304266

  • SHA256

    3619fec40668b5c713499b9c451e428fb1c022bda4a24dd9fc3f62e0cc017b4d

  • SHA512

    ea5827ace763562a502bd32c70df807c570f467eca5e79138bf7a66bb658049cfcd1d9b21e75e692c2a6d4b92e66636cd051138b223194921d1a8dfa061289c9

Score
10/10
gandcrabbackdoorransomwarespywarestealersuricata

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/fab57563577e6bc | 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/fab57563577e6bc

Signatures

  • GandCrab Payload 1 IoCs
  • 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 6 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 26 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 3 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3619fec40668b5c713499b9c451e428fb1c022bda4a24dd9fc3f62e0cc017b4d.exe
    "C:\Users\Admin\AppData\Local\Temp\3619fec40668b5c713499b9c451e428fb1c022bda4a24dd9fc3f62e0cc017b4d.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 WriteProcessMemory
    PID:1912
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1572
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:684

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

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Downloads

  • memory/1572-59-0x0000000000000000-mapping.dmp
    Download
  • memory/1912-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1912-55-0x0000000000565000-0x0000000000577000-memory.dmp
    Filesize

    72KB

    Download
  • memory/1912-57-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

    Download
  • memory/1912-56-0x000000000054E000-0x0000000000566000-memory.dmp
    Filesize

    96KB

    Download
  • memory/1912-58-0x000000000054E000-0x0000000000566000-memory.dmp
    Filesize

    96KB

    Download