General

  • Target

    03507d010b407d03a6857090238dad76735ab72cd32ef49ed91e9c910c40d724

  • Size

    733KB

  • Sample

    230423-tmw5csed93

  • MD5

    d40e6770732b567015fd74c4ad7ab22b

  • SHA1

    112d0a3a264ccb52d809cb8c3359733221fc1d1b

  • SHA256

    03507d010b407d03a6857090238dad76735ab72cd32ef49ed91e9c910c40d724

  • SHA512

    9ec10d4d8e6bd1f10c69ff2b19237d8a197397081562872916d5631dff8800ec4bf870df8a1f83dd00cdd9af1360fc68702f1f4e886aef6222eb1f5e75c5c73f

  • SSDEEP

    12288:cNWYlAZHyvqsgPKLy1L2J67ZfdFahyp0t/OjTHLkeIr7tsS6vcbMChzn9:oWYap1YUvFahEG/6Tor76S0cbhh

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/raud/get.php

Attributes
  • extension

    .coza

  • offline_id

    O8Ao46dcCReRPC4I1PGMYsRFFc9WI5eOp0O3MFt1

  • payload_url

    http://colisumy.com/dl/build2.exe

    http://zexeq.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-EPBZCVAS8s 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@freshmail.top Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0693JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.5

Botnet

bf58e1879f88b222ba2391682babf9d8

C2

https://steamcommunity.com/profiles/76561199497218285

https://t.me/tg_duckworld

Attributes
  • profile_id_v2

    bf58e1879f88b222ba2391682babf9d8

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36 Vivaldi/3.7

Targets

    • Target

      03507d010b407d03a6857090238dad76735ab72cd32ef49ed91e9c910c40d724

    • Size

      733KB

    • MD5

      d40e6770732b567015fd74c4ad7ab22b

    • SHA1

      112d0a3a264ccb52d809cb8c3359733221fc1d1b

    • SHA256

      03507d010b407d03a6857090238dad76735ab72cd32ef49ed91e9c910c40d724

    • SHA512

      9ec10d4d8e6bd1f10c69ff2b19237d8a197397081562872916d5631dff8800ec4bf870df8a1f83dd00cdd9af1360fc68702f1f4e886aef6222eb1f5e75c5c73f

    • SSDEEP

      12288:cNWYlAZHyvqsgPKLy1L2J67ZfdFahyp0t/OjTHLkeIr7tsS6vcbMChzn9:oWYap1YUvFahEG/6Tor76S0cbhh

    • 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

    • Checks computer location settings

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

    • 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

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks