General

  • Target

    file.exe

  • Size

    211KB

  • Sample

    221103-wnk5ladcg6

  • MD5

    011b7d39c4a3603d03417d7093530641

  • SHA1

    5c62b904cdca69b85b8de3d533ff99cd49b10543

  • SHA256

    6583820e1e3bd994d6bf36a25bf4bf786e759de9b198c0dd0ebce06cd115191f

  • SHA512

    99b6b973412decbf9c93b669dd583685adec5309a3bf9b19e2514232d0150336c7991f15f32411990c131b090e5c93e07606e2f476def44d8cdbc74b7d204401

  • SSDEEP

    3072:nwJmbCxTErlaUEuLVWlW86tOj5AeL4Hs4CMH+0isbmFQWtuvbjooem+r4x:nw42hEBzLEI80e6s49iamvCnooR3

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .bozq

  • offline_id

    oHp5e4SJxdFtxfvKYmeX06F4C5cn0EcsF5Ak9Wt1

  • payload_url

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

    http://fresherlights.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-dyi5UcwIT9 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: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0597Jhyjd

rsa_pubkey.plain

Extracted

Family

systembc

C2

89.248.165.79:443

Targets

    • Target

      file.exe

    • Size

      211KB

    • MD5

      011b7d39c4a3603d03417d7093530641

    • SHA1

      5c62b904cdca69b85b8de3d533ff99cd49b10543

    • SHA256

      6583820e1e3bd994d6bf36a25bf4bf786e759de9b198c0dd0ebce06cd115191f

    • SHA512

      99b6b973412decbf9c93b669dd583685adec5309a3bf9b19e2514232d0150336c7991f15f32411990c131b090e5c93e07606e2f476def44d8cdbc74b7d204401

    • SSDEEP

      3072:nwJmbCxTErlaUEuLVWlW86tOj5AeL4Hs4CMH+0isbmFQWtuvbjooem+r4x:nw42hEBzLEI80e6s49iamvCnooR3

    • 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.

    • SystemBC

      SystemBC is a proxy and remote administration tool first seen in 2019.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • Accesses Microsoft Outlook profiles

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • 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 Enterprise v6

Tasks