Resubmissions

11-11-2023 08:23

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27-10-2023 03:52

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27-10-2023 03:51

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20-10-2023 21:27

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General

  • Target

    a.exe

  • Size

    5KB

  • Sample

    231021-njywwsfg64

  • MD5

    800a6337b0b38274efe64875d15f70c5

  • SHA1

    6b0858c5f9a2e2b5980aac05749e3d6664a60870

  • SHA256

    76a7490d3f1b0685f60a417d1c9cf96927b473825a914221f092f82ea112b571

  • SHA512

    bf337140044a4674d69f7a2db30389e248593a99826c8731bc0a5ac71e46819eb539d8c7cbeab48108310359f5604e02e3bd64f17d9fdd380b574f329543645e

  • SSDEEP

    48:6O/tGt28lK9iqmcfaFXfkeLJhyPFlWa8tYb/INV/cpwOulavTqXSfbNtm:j/IUiqtaJkeqDUt5xcpmsvNzNt

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6564962941:AAEWWFBvCJUfh4ZCVgXTE-QUYajcwLUCJU0/

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.1

Botnet

Default

C2

127.0.0.1:4449

20.211.121.138:4449

Mutex

udbyxlklndgyt

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

amadey

Version

3.89

C2

http://193.42.32.29/9bDc8sQ/index.php

Attributes
  • install_dir

    1ff8bec27e

  • install_file

    nhdues.exe

  • strings_key

    2efe1b48925e9abf268903d42284c46b

rc4.plain

Extracted

Family

vidar

Version

6.1

Botnet

f02b730f81476e82205d9d2eb21e0ef8

C2

https://steamcommunity.com/profiles/76561199563297648

https://t.me/twowheelfun

Attributes
  • profile_id_v2

    f02b730f81476e82205d9d2eb21e0ef8

  • user_agent

    Mozilla/5.0 (iPad; CPU OS 17_0_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5 Mobile/15E148 Safari/605.1.15

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Extracted

Family

smokeloader

Botnet

pub1

Targets

    • Target

      a.exe

    • Size

      5KB

    • MD5

      800a6337b0b38274efe64875d15f70c5

    • SHA1

      6b0858c5f9a2e2b5980aac05749e3d6664a60870

    • SHA256

      76a7490d3f1b0685f60a417d1c9cf96927b473825a914221f092f82ea112b571

    • SHA512

      bf337140044a4674d69f7a2db30389e248593a99826c8731bc0a5ac71e46819eb539d8c7cbeab48108310359f5604e02e3bd64f17d9fdd380b574f329543645e

    • SSDEEP

      48:6O/tGt28lK9iqmcfaFXfkeLJhyPFlWa8tYb/INV/cpwOulavTqXSfbNtm:j/IUiqtaJkeqDUt5xcpmsvNzNt

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • Amadey

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

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • XMRig Miner payload

    • xmrig

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

    • Async RAT payload

    • Contacts a large (1250) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Downloads MZ/PE file

    • Stops running service(s)

    • Executes dropped EXE

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • UPX packed file

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

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Uses the VBS compiler for execution

    • VMProtect packed file

      Detects executables packed with VMProtect commercial packer.

    • 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.

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks