General

  • Target

    c010d2fbf77931ba29d911e5c6a77062c9530e28ee4980b28b600503a6214cf5

  • Size

    791KB

  • Sample

    221005-esl41sdcf5

  • MD5

    b5b7b11b44d02e4e7961595de03eed5c

  • SHA1

    e54da75857987ad56ee4ffaa122ef213b7a18f9b

  • SHA256

    c010d2fbf77931ba29d911e5c6a77062c9530e28ee4980b28b600503a6214cf5

  • SHA512

    39b415578d271dfb9b531d6234573033b929012ce0e536251ddb075852badff473c7c38b7638685b18e6b5c5943313879b8b1f49d406a0a1c3a3f4836447d8fd

  • SSDEEP

    12288:sackklNCaAQ3mBR4GuKaD/A4htBA1AmjkKOPFjRZedbmvunnp:s1zNCrQIuKODA15Sd9IhRp

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test1/get.php

Attributes
  • extension

    .adlg

  • offline_id

    z8lhl4oForVEc7gy9Ra8rSqjYMl3xiFRuIW4not1

  • 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-g28rVcqA58 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: 0570Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.9

Botnet

517

C2

https://t.me/larsenup

https://ioc.exchange/@zebra54

Attributes
  • profile_id

    517

Targets

    • Target

      c010d2fbf77931ba29d911e5c6a77062c9530e28ee4980b28b600503a6214cf5

    • Size

      791KB

    • MD5

      b5b7b11b44d02e4e7961595de03eed5c

    • SHA1

      e54da75857987ad56ee4ffaa122ef213b7a18f9b

    • SHA256

      c010d2fbf77931ba29d911e5c6a77062c9530e28ee4980b28b600503a6214cf5

    • SHA512

      39b415578d271dfb9b531d6234573033b929012ce0e536251ddb075852badff473c7c38b7638685b18e6b5c5943313879b8b1f49d406a0a1c3a3f4836447d8fd

    • SSDEEP

      12288:sackklNCaAQ3mBR4GuKaD/A4htBA1AmjkKOPFjRZedbmvunnp:s1zNCrQIuKODA15Sd9IhRp

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • 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 Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks