Resubmissions

14-05-2023 10:27

230514-mg3xdsdh8s 10

14-05-2023 10:22

230514-md97asbf37 10

13-05-2023 18:32

230513-w6nnfabc4w 10

12-05-2023 14:41

230512-r2f1ksde25 10

12-05-2023 11:28

230512-nkzvksfb2z 10

General

  • Target

    file.exe

  • Size

    320KB

  • Sample

    230512-r2f1ksde25

  • MD5

    f5f88694097f079e6f8e9052f98752f6

  • SHA1

    3181292702ef21a7421b1b5527e9a05759029337

  • SHA256

    0b51b2819a128abdfab0006900667b5e05329aa0416445c43db76e2f503b92ff

  • SHA512

    b80f5dee5c9936a0edae0e0f83905ce0291e347064b0f9abadca8dd053f477e622881ead2c93903a83a504f3556fdffc1b9ee9cb3fdcb66a4babf0ea787c1258

  • SSDEEP

    3072:+AZJkfFtpi+BL72q4w+2Wt1YPgmXhpgjDY4KHE9Ql/98vwp7t:+xFaS7dlWQz3gjDY4KH090

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://potunulit.org/

http://hutnilior.net/

http://bulimu55t.net/

http://soryytlic4.net/

http://novanosa5org.org/

http://nuljjjnuli.org/

http://tolilolihul.net/

http://somatoka51hub.net/

http://hujukui3.net/

http://bukubuka1.net/

http://golilopaster.org/

http://newzelannd66.org/

http://otriluyttn.org/

http://toobussy.com/tmp/

http://wuc11.com/tmp/

http://ladogatur.ru/tmp/

http://kingpirate.ru/tmp/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .gatz

  • offline_id

    gdTA3a9eBPJZlAHc7UhZKxuA2PF57q3j1xsfAkt1

  • 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-pznhigpUwP 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: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0705JOsie

rsa_pubkey.plain

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

amadey

Version

3.70

C2

77.73.134.27/n9kdjc3xSf/index.php

Extracted

Family

vidar

Version

3.8

Botnet

e5d7cb6205191dc1a4f6288000860943

C2

https://steamcommunity.com/profiles/76561198272578552

https://t.me/libpcre

Attributes
  • profile_id_v2

    e5d7cb6205191dc1a4f6288000860943

  • 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

Extracted

Family

vidar

Version

3.8

Botnet

ef32d425b907146eeb9090dbc9455ab1

C2

https://steamcommunity.com/profiles/76561198272578552

https://t.me/libpcre

Attributes
  • profile_id_v2

    ef32d425b907146eeb9090dbc9455ab1

  • 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

      file.exe

    • Size

      320KB

    • MD5

      f5f88694097f079e6f8e9052f98752f6

    • SHA1

      3181292702ef21a7421b1b5527e9a05759029337

    • SHA256

      0b51b2819a128abdfab0006900667b5e05329aa0416445c43db76e2f503b92ff

    • SHA512

      b80f5dee5c9936a0edae0e0f83905ce0291e347064b0f9abadca8dd053f477e622881ead2c93903a83a504f3556fdffc1b9ee9cb3fdcb66a4babf0ea787c1258

    • SSDEEP

      3072:+AZJkfFtpi+BL72q4w+2Wt1YPgmXhpgjDY4KHE9Ql/98vwp7t:+xFaS7dlWQz3gjDY4KH090

    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Lumma Stealer

      An infostealer written in C++ first seen in August 2022.

    • Modifies security service

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • XMRig Miner payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • 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.

    • Checks whether UAC is enabled

    • 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.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks