General

  • Target

    file.exe

  • Size

    147KB

  • Sample

    221006-bxdfwsgag8

  • MD5

    25905f4fe60996a8f22085655ffaa0c5

  • SHA1

    6e822214482a023e81e2dd0437a847295f9b43b2

  • SHA256

    aa4eceb7fb5fa854ccb3de8675880f44564aa1eac27663399e5267185d228198

  • SHA512

    ad13cb4304c05a3ffcd9713ec2cff98f8a5e6a42923523d4dc09e48dfe80688cda48421cb4ad5274b14562e0439e49745332d2d7ab594f32328f6ff7221c52fa

  • SSDEEP

    3072:UGQcjNShhfYsu9TgcTypOVCFDuFuXi7RXYg914rBcO:h3okLRFIOCDo7Rx914a

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .adww

  • 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: 0573Jhyjd

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

      file.exe

    • Size

      147KB

    • MD5

      25905f4fe60996a8f22085655ffaa0c5

    • SHA1

      6e822214482a023e81e2dd0437a847295f9b43b2

    • SHA256

      aa4eceb7fb5fa854ccb3de8675880f44564aa1eac27663399e5267185d228198

    • SHA512

      ad13cb4304c05a3ffcd9713ec2cff98f8a5e6a42923523d4dc09e48dfe80688cda48421cb4ad5274b14562e0439e49745332d2d7ab594f32328f6ff7221c52fa

    • SSDEEP

      3072:UGQcjNShhfYsu9TgcTypOVCFDuFuXi7RXYg914rBcO:h3okLRFIOCDo7Rx914a

    • 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.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • 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

4
T1012

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Tasks