Resubmissions

09-09-2022 20:45

220909-zj17sscggq 10

09-09-2022 20:14

220909-yzyk6shac8 10

09-09-2022 19:15

220909-xydnyacfhl 10

General

  • Target

    9010184a950870fa28d2f8bbaa9d9d15c661e555c846eed9530f676329067a96

  • Size

    725KB

  • Sample

    220909-yzyk6shac8

  • MD5

    43a2b7b5a0510fe2c995648ade8b4a52

  • SHA1

    64e31023ec72f4bc612718f047b6398f049649c4

  • SHA256

    9010184a950870fa28d2f8bbaa9d9d15c661e555c846eed9530f676329067a96

  • SHA512

    5d728e01ddbae98bd3b1f29b4814a9a177fc7adc2b2fd93aaa60e3b1b30f8d09e3fc46f9eac0cc73d64f49ddd69b4f6c07ec22f87def47cc031005aa56374143

  • SSDEEP

    12288:quoyvm6fas3PqdBmY4WhIVBT/O+bRb7bIYiUyXYTL+mxtZfRXKiK3EH11+pvnFC:VOrYS1NMTplbPiFXqt3xK3EV1+1F

Malware Config

Extracted

Path

C:\_readme.txt

Family

djvu

Ransom Note
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-xuPJqoyzQE 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: 0556JhyjdCkSQBC78HRhAVCH0E7Go2MYrKH61ZjBC6yXYvKZn
Emails

support@bestyourmail.ch

datarestorehelp@airmail.cc

URLs

https://we.tl/t-xuPJqoyzQE

Extracted

Family

djvu

C2

http://acacaca.org/test3/get.php

Attributes
  • extension

    .mmvb

  • offline_id

    yd6oYv6aBN90yFzTWdZ34sXSXtXiauzOLXZyWht1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://acacaca.org/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-xuPJqoyzQE 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: 0556Jhyjd

rsa_pubkey.plain

Targets

    • Target

      9010184a950870fa28d2f8bbaa9d9d15c661e555c846eed9530f676329067a96

    • Size

      725KB

    • MD5

      43a2b7b5a0510fe2c995648ade8b4a52

    • SHA1

      64e31023ec72f4bc612718f047b6398f049649c4

    • SHA256

      9010184a950870fa28d2f8bbaa9d9d15c661e555c846eed9530f676329067a96

    • SHA512

      5d728e01ddbae98bd3b1f29b4814a9a177fc7adc2b2fd93aaa60e3b1b30f8d09e3fc46f9eac0cc73d64f49ddd69b4f6c07ec22f87def47cc031005aa56374143

    • SSDEEP

      12288:quoyvm6fas3PqdBmY4WhIVBT/O+bRb7bIYiUyXYTL+mxtZfRXKiK3EH11+pvnFC:VOrYS1NMTplbPiFXqt3xK3EV1+1F

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Installed Components in the registry

    • Possible privilege escalation attempt

    • 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 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

2
T1060

Defense Evasion

Modify Registry

3
T1112

File Permissions Modification

1
T1222

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Collection

Data from Local System

3
T1005

Tasks