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General

  • Target

    file.exe

  • Size

    787KB

  • Sample

    220918-w92dpsbeh5

  • MD5

    f976de456e761a39e3e9a12ccbd88bce

  • SHA1

    8c40302b89309035e90cd098bb1d2215c97f1a43

  • SHA256

    249cb4680de5cf06721fa03944054178a62fa79bdfb484ab1bcaea4b0d66a33e

  • SHA512

    11a1bf2b0110676d1e432547c757b8767cb522207dd27fbbbde237d2361e10476385b30f4dbbcff668528950b782dd2f105550300559e61aa275cede4ecdf397

  • SSDEEP

    12288:gRfNHwRGWrynMdC4YrytHTaEg4p4AMWmcEukaYY9dHmWZrLM0Ai75:gzwlVLYrwzaEg4p4LWsuka59ZnA45

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test3/get.php

Attributes
  • extension

    .aamv

  • offline_id

    MyudhIExJux2oRQXw95TT1oAPu7mvqRMzxr1eet1

  • payload_url

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

    http://acacaca.org/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-4Xcf4IX21n 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: 0564Jhyjd

rsa_pubkey.plain

Targets

    • Target

      file.exe

    • Size

      787KB

    • MD5

      f976de456e761a39e3e9a12ccbd88bce

    • SHA1

      8c40302b89309035e90cd098bb1d2215c97f1a43

    • SHA256

      249cb4680de5cf06721fa03944054178a62fa79bdfb484ab1bcaea4b0d66a33e

    • SHA512

      11a1bf2b0110676d1e432547c757b8767cb522207dd27fbbbde237d2361e10476385b30f4dbbcff668528950b782dd2f105550300559e61aa275cede4ecdf397

    • SSDEEP

      12288:gRfNHwRGWrynMdC4YrytHTaEg4p4AMWmcEukaYY9dHmWZrLM0Ai75:gzwlVLYrwzaEg4p4LWsuka59ZnA45

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • 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 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