Overview

overview

10

Static

static

3

Ransomware...ll.zip

windows10-1703-x64

1

Ransomware...ll.exe

windows10-1703-x64

10

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General

  • Target

    Ransomware.CryptoWall.zip

  • Size

    59KB

  • Sample

    240320-drxnpagb2y

  • MD5

    ef0fff38bd2c9dfdb24d73c6861dcb9e

  • SHA1

    f17b98dcdd5a93f0a9ea3961de381ff3898add56

  • SHA256

    8bccc78422858ec95ce2b9b29e53c1ae4aacfd37fdcc35d38e90410ef8cd8c0b

  • SHA512

    04f5299c1905d4f4da18585cf843273aa547c4e4d84b84befff9da749d5690ce378dc7b9dd19d77bd54761ede5f9bf8c388bb7563dffb0045023c580792fcae9

  • SSDEEP

    768:LIa0DdTKY1MaPGlD5cmttnlNndZJjOvkFRxlRS49hF3ZI+ozfbq8GyeYgS3Qb90S:MhgaPaWmf/1jO0RVnPo7OQewjT8Z

Score
10/10
cryptolockerwannacrydiscoverypersistenceransomwarespywarestealerworm

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\@Please_Read_Me@.txt

Family

wannacry

Ransom Note
Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn Next, please find an application file named "@WanaDecryptor@.exe". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �
Wallets

115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn

Targets

    • Target

      Ransomware.CryptoWall.zip

    • Size

      59KB

    • MD5

      ef0fff38bd2c9dfdb24d73c6861dcb9e

    • SHA1

      f17b98dcdd5a93f0a9ea3961de381ff3898add56

    • SHA256

      8bccc78422858ec95ce2b9b29e53c1ae4aacfd37fdcc35d38e90410ef8cd8c0b

    • SHA512

      04f5299c1905d4f4da18585cf843273aa547c4e4d84b84befff9da749d5690ce378dc7b9dd19d77bd54761ede5f9bf8c388bb7563dffb0045023c580792fcae9

    • SSDEEP

      768:LIa0DdTKY1MaPGlD5cmttnlNndZJjOvkFRxlRS49hF3ZI+ozfbq8GyeYgS3Qb90S:MhgaPaWmf/1jO0RVnPo7OQewjT8Z

    Score
    1/10
    behavioral1

    • Target

      Ransomware.CryptoWall.exe

    • Size

      132KB

    • MD5

      919034c8efb9678f96b47a20fa6199f2

    • SHA1

      747070c74d0400cffeb28fbea17b64297f14cfbd

    • SHA256

      e036d68b8f8b7afc6c8b6252876e1e290f11a26d4ad18ac6f310662845b2c734

    • SHA512

      745a81c50bbfd62234edb9788c83a22e0588c5d25c00881901923a02d7096c71ef5f0cd5b73f92ad974e5174de064b0c5ea8044509039aab14b2aed83735a7c4

    • SSDEEP

      3072:naRQpzd/99wen3XgWorw8I3h8LkMvqCgQfBUnPy8L6kssU:nJdTwo30ri3h8LkMvqCgQfBUPy8L6ksP

    Score
    10/10
    cryptolockerwannacrydiscoverypersistenceransomwarespywarestealerworm

    • CryptoLocker

      Ransomware family with multiple variants.

      ransomwarecryptolocker

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Wannacry

      WannaCry is a ransomware cryptoworm.

      ransomwarewormwannacry

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Renames multiple (294) files with added filename extension

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

      ransomware

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware
    behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Indicator Removal

2
T1070

File Deletion

2
T1070.004

File and Directory Permissions Modification

1
T1222

Modify Registry

5
T1112

Hide Artifacts

1
T1564

Hidden Files and Directories

1
T1564.001

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

7
T1012

Peripheral Device Discovery

3
T1120

System Information Discovery

7
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

2
T1490

Defacement

1
T1491

Resource Development

Reconnaissance

Tasks