General

  • Target

    Amira_Security_Setup10.msi

  • Size

    682KB

  • Sample

    230617-llke6sag8v

  • MD5

    1d41d3cf7ecfba63638ce048c7f02016

  • SHA1

    03e785e950f1310cfe2bbf21a2c19fa43cfaae1b

  • SHA256

    53aff2ab2974e31fc5c85b013d34bcebf33b8b591926ea4e027410bcaefebcb2

  • SHA512

    15609f7d73b71c72f891a2ce31e3360a8c47ad8e081e37a64f3a8160afae51a2d35f7cb95ed50adb0e3335620683f854ec461457d642740ac4e7b294efddbad8

  • SSDEEP

    12288:xnzRUFb4H6KJF/pDYkw0gCvoKWg6AZznX43KPEMqffKssFDO2:xnGOxtwYXLEjfQO2

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: 15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1 Next, please find the decrypt software on your desktop, an executable file named "!WannaDecryptor!.exe". If it does not exsit, download the software from the address below. (You may need to disable your antivirus for a while.) rar password: wcry123 Run and follow the instructions! �
Wallets

15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1

Targets

    • Target

      Amira_Security_Setup10.msi

    • Size

      682KB

    • MD5

      1d41d3cf7ecfba63638ce048c7f02016

    • SHA1

      03e785e950f1310cfe2bbf21a2c19fa43cfaae1b

    • SHA256

      53aff2ab2974e31fc5c85b013d34bcebf33b8b591926ea4e027410bcaefebcb2

    • SHA512

      15609f7d73b71c72f891a2ce31e3360a8c47ad8e081e37a64f3a8160afae51a2d35f7cb95ed50adb0e3335620683f854ec461457d642740ac4e7b294efddbad8

    • SSDEEP

      12288:xnzRUFb4H6KJF/pDYkw0gCvoKWg6AZznX43KPEMqffKssFDO2:xnGOxtwYXLEjfQO2

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • 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

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Deletion

1
T1107

Modify Registry

2
T1112

Discovery

Query Registry

3
T1012

Peripheral Device Discovery

2
T1120

System Information Discovery

4
T1082

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Tasks