Resubmissions

19-03-2022 08:22

220319-j9qwraech8 10

19-03-2022 08:21

220319-j84ffseebn 6

16-03-2022 15:34

220316-sz9qjsfba4 10

17-02-2022 18:50

220217-xhdn1aedap 10

17-02-2022 13:21

220217-ql2rnsbbf7 10

17-02-2022 13:20

220217-qljwvscdar 1

17-02-2022 13:20

220217-qlb61sbbf6 1

17-02-2022 13:19

220217-qkv8hacdap 1

17-02-2022 12:49

220217-p2gwrscchl 10

17-02-2022 08:03

220217-jxx5ascaan 1

General

  • Target

    important.exe

  • Size

    3.4MB

  • Sample

    220217-ql2rnsbbf7

  • MD5

    84c82835a5d21bbcf75a61706d8ab549

  • SHA1

    5ff465afaabcbf0150d1a3ab2c2e74f3a4426467

  • SHA256

    ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

  • SHA512

    90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\@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: 13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94 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

13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94

Targets

    • Target

      important.exe

    • Size

      3.4MB

    • MD5

      84c82835a5d21bbcf75a61706d8ab549

    • SHA1

      5ff465afaabcbf0150d1a3ab2c2e74f3a4426467

    • SHA256

      ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

    • SHA512

      90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244

    • Registers COM server for autorun

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Sets file execution options in registry

    • Drops startup file

    • Loads dropped DLL

    • Modifies file permissions

    • Adds Run key to start application

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

3
T1060

Hidden Files and Directories

1
T1158

Defense Evasion

File Deletion

1
T1107

Modify Registry

4
T1112

File Permissions Modification

1
T1222

Hidden Files and Directories

1
T1158

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Tasks