General

  • Target

    fa5c22085dd40607fa22a9a6fdff7156b9d55f3bd165c10829b6e9d2ec94dc9a

  • Size

    718KB

  • Sample

    230331-wcl8hscb69

  • MD5

    3822e0081b77094db96e1f045466d42e

  • SHA1

    d0b60bc97ebb7243226c8ec66e17a49352c83169

  • SHA256

    fa5c22085dd40607fa22a9a6fdff7156b9d55f3bd165c10829b6e9d2ec94dc9a

  • SHA512

    30f93cdb07a10f7c6885acff468f54f20ec97a93fda223bf1cedf79ae297e9d8ab2e2118aa1ee9041f4fdf05127f5df06211c2c90646596cbe4f27e9249371ba

  • SSDEEP

    12288:ISO3WyemB6CJjATTO0P0YGUyphMgA4IHrwRPtRyOfz/va3FNVM:3O3xYCNA3O0HGUy7XIMRnyOL/veDVM

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes
  • extension

    .nifr

  • offline_id

    FCP2fiITr4rryFhFBnA59GMgwES5CunmcbPc76t1

  • payload_url

    http://uaery.top/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-v8HcfXTy5x 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: 0679SUjhw

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.2

Botnet

5df88deb5dde677ba658b77ad5f60248

C2

https://steamcommunity.com/profiles/76561199489580435

https://t.me/tabootalks

Attributes
  • profile_id_v2

    5df88deb5dde677ba658b77ad5f60248

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Targets

    • Target

      fa5c22085dd40607fa22a9a6fdff7156b9d55f3bd165c10829b6e9d2ec94dc9a

    • Size

      718KB

    • MD5

      3822e0081b77094db96e1f045466d42e

    • SHA1

      d0b60bc97ebb7243226c8ec66e17a49352c83169

    • SHA256

      fa5c22085dd40607fa22a9a6fdff7156b9d55f3bd165c10829b6e9d2ec94dc9a

    • SHA512

      30f93cdb07a10f7c6885acff468f54f20ec97a93fda223bf1cedf79ae297e9d8ab2e2118aa1ee9041f4fdf05127f5df06211c2c90646596cbe4f27e9249371ba

    • SSDEEP

      12288:ISO3WyemB6CJjATTO0P0YGUyphMgA4IHrwRPtRyOfz/va3FNVM:3O3xYCNA3O0HGUy7XIMRnyOL/veDVM

    • 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