General

  • Target

    a5cf6a709d21459f54c0d6477d9b30828e3dc1c7927bbc178b408df61d6517ce

  • Size

    198KB

  • Sample

    220924-yf5v5sdben

  • MD5

    b49a43e96065cfdacf0352ee1321d5ac

  • SHA1

    1a27ff45c05205f9a44c620bec002926f177a789

  • SHA256

    a5cf6a709d21459f54c0d6477d9b30828e3dc1c7927bbc178b408df61d6517ce

  • SHA512

    5ec0da46da8c989d7481f5b50ca8efd2d09184b4cb177fae47b1cba06c5a97d6ff3cd45ce41016f09ad465d77c3d3a6835db9ae467a10469cbb82a48cd4a71f2

  • SSDEEP

    3072:K2HetLsmcb4PBA5Y0cpsUUHnICM486CZc0zv+3V60BZGZI/PkkXx:GLZPE+s3F7abbO6c

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/lancer/get.php

Attributes
  • extension

    .ofww

  • offline_id

    xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://winnlinne.com/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-EWKSsSJiVn Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: support@bestyourmail.ch Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0569Jhyjd

rsa_pubkey.plain

Targets

    • Target

      a5cf6a709d21459f54c0d6477d9b30828e3dc1c7927bbc178b408df61d6517ce

    • Size

      198KB

    • MD5

      b49a43e96065cfdacf0352ee1321d5ac

    • SHA1

      1a27ff45c05205f9a44c620bec002926f177a789

    • SHA256

      a5cf6a709d21459f54c0d6477d9b30828e3dc1c7927bbc178b408df61d6517ce

    • SHA512

      5ec0da46da8c989d7481f5b50ca8efd2d09184b4cb177fae47b1cba06c5a97d6ff3cd45ce41016f09ad465d77c3d3a6835db9ae467a10469cbb82a48cd4a71f2

    • SSDEEP

      3072:K2HetLsmcb4PBA5Y0cpsUUHnICM486CZc0zv+3V60BZGZI/PkkXx:GLZPE+s3F7abbO6c

    • Detected Djvu ransomware

    • Detects Smokeloader packer

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Deletes itself

    • Loads dropped DLL

    • Modifies file permissions

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Discovery

System Information Discovery

2
T1082

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

Collection

Email Collection

1
T1114

Tasks