Overview

overview

10

Static

static

3

2024-06-19...ny.exe

windows7-x64

10

2024-06-19...ny.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    19-06-2024 19:43

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General

  • Target

    2024-06-19_9c59dda483facf2ffc068442e0dfe91d_gandcrab_karagany.exe

  • Size

    91KB

  • MD5

    9c59dda483facf2ffc068442e0dfe91d

  • SHA1

    8151fec10267140e71a20f2a348d7b125cd7f4b8

  • SHA256

    6e85c16717cd78817d56611151b9180eb06ca48268244a649eaf30de6e16bc87

  • SHA512

    838dde099a696a6c327dcad0718bf1dd01fd2d2a35a438b1fe1576cfe32c2e9188b4c1a3a480f7dd1c4dd683ffaf9bc931e4b8b379d9cacc3b120b03c1e61a2c

  • SSDEEP

    1536:WGdg6A8xXaHuX39Ev8hGijIa7DdfQZblriWU8BFXOsWjcdS6ItKT0S:JZqCZjIGmrLrJItKT0S

Score
10/10
gandcrabbackdoordefense_evasionexecutionimpactransomwarespywarestealer

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-2297530677-1229052932-2803917579-1000\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/9dd94b9e4673f81c | 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/9dd94b9e4673f81c

Signatures

  • Gandcrab

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

    ransomwarebackdoorgandcrab
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (257) files with added filename extension

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

    ransomware
  • Deletes itself 1 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 23 IoCs

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

  • Drops file in Program Files directory 30 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-19_9c59dda483facf2ffc068442e0dfe91d_gandcrab_karagany.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-19_9c59dda483facf2ffc068442e0dfe91d_gandcrab_karagany.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:452
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout -c 5 & del "C:\Users\Admin\AppData\Local\Temp\2024-06-19_9c59dda483facf2ffc068442e0dfe91d_gandcrab_karagany.exe" /f /q
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1372
      • C:\Windows\SysWOW64\timeout.exe
        timeout -c 5
        3⤵
        • Delays execution with timeout.exe
        PID:1872
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1164

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Windows Management Instrumentation

1
T1047

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

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

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • F:\$RECYCLE.BIN\S-1-5-21-2297530677-1229052932-2803917579-1000\KRAB-DECRYPT.txt
    Filesize

    7KB

    MD5

    7608ed2b9795abdd4fb624a87ac359c1

    SHA1

    9d1bbf35aac4bef88e95afd1c57c50f312ce1709

    SHA256

    828cefa90d14b895a0459e3df36a184240e7ddb0555b01a65ac74b12463fe079

    SHA512

    77a615d7467d19ff5b3d13bae9cea72bda184aaa10cd8bd683bc15ebfbefce90583d16a48f054650969c3268cabfafaa17e9160118c2e3b803a6f5fc0de98d61

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