Resubmissions

23-07-2023 20:42

230723-zhe8yagg33 10

General

  • Target

    53305b35d4960f5de08205ef656f7432f8e58e5bc4cc736d8ca2f9af2282325b

  • Size

    766KB

  • Sample

    230723-zhe8yagg33

  • MD5

    e171a6f67e6d2531ec27ac40ce49d49d

  • SHA1

    222f0a903cefdbb3f3a91f2df68de4a183cba570

  • SHA256

    53305b35d4960f5de08205ef656f7432f8e58e5bc4cc736d8ca2f9af2282325b

  • SHA512

    45754460b9307db67a968ce8608f5a15fe06fb75f29c21fb3fcb2623eea0bd8557f28772e9d5fbe8487c291935bdf358f16067cc33d72e4e6895c2ee4fd7ed22

  • SSDEEP

    12288:FKVXaCs4mWD3tjTe4auIGx96MtJ43+MiDvMKCory9mL/IgYNhyT6:F4Xp/xjTe4DXJVMMrP/KqW

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .kitu

  • offline_id

    NGHsYuVPwlgoEkG3ENtueNmXtFHSWod7fYayU9t1

  • 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-lOjoPPuBzw 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: 0748JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.8

Botnet

https://t.me/sundayevent

C2

https://t.me/sundayevent

https://steamcommunity.com/profiles/76561198982268531

Attributes
  • profile_id_v2

    https://t.me/sundayevent

  • user_agent

    Mozilla/5.0 (X11; Linux 3.5.4-1-ARCH i686; es) KHTML/4.9.1 (like Gecko) Konqueror/4.9

Targets

    • Target

      53305b35d4960f5de08205ef656f7432f8e58e5bc4cc736d8ca2f9af2282325b

    • Size

      766KB

    • MD5

      e171a6f67e6d2531ec27ac40ce49d49d

    • SHA1

      222f0a903cefdbb3f3a91f2df68de4a183cba570

    • SHA256

      53305b35d4960f5de08205ef656f7432f8e58e5bc4cc736d8ca2f9af2282325b

    • SHA512

      45754460b9307db67a968ce8608f5a15fe06fb75f29c21fb3fcb2623eea0bd8557f28772e9d5fbe8487c291935bdf358f16067cc33d72e4e6895c2ee4fd7ed22

    • SSDEEP

      12288:FKVXaCs4mWD3tjTe4auIGx96MtJ43+MiDvMKCory9mL/IgYNhyT6:F4Xp/xjTe4DXJVMMrP/KqW

    • 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 v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

File and Directory Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks