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General

  • Target

    random.exe

  • Size

    5.5MB

  • Sample

    250322-pt4esswqy7

  • MD5

    8aa52be570da2efe4885957e29b89538

  • SHA1

    2ad2e47c307b34d9a593e21dfe0dba723c110b3d

  • SHA256

    a66ad1178645f946e6e9b98c181e660df8bf87c38c88b220a24f35f0406cc107

  • SHA512

    c685dd857057879a6ff8bdb7279511e940babeb7f358a94e33fea308ac0bd8ceb6d2bcd758dd38eada0995bb96f910d5728c1431286f0875d2ca392b0ca7308e

  • SSDEEP

    98304:ZDpKjlkbVghclaJ8RhIc1pX452gw8QzbRwm5H3gzIFNM2w+1R:yxQZFzQQ/5HvX9

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://196.251.91.42/up/uploads/encryption02.jpg

exe.dropper

http://196.251.91.42/up/uploads/encryption02.jpg

Extracted

Family

amadey

Version

5.21

Botnet

092155

C2

http://176.113.115.6

Attributes
  • install_dir

    bb556cff4a

  • install_file

    rapes.exe

  • strings_key

    a131b127e996a898cd19ffb2d92e481b

  • url_paths

    /Ni9kiput/index.php

rc4.plain

Extracted

Family

stealc

Botnet

trump

C2

http://45.93.20.28

Attributes
  • url_path

    /85a1cacf11314eb8.php

Extracted

Family

skuld

C2

https://discordapp.com/api/webhooks/1349647136895012916/qSys_fpsL_y7usKH_AyrFupSjzSsVfg2t895g2HV8Yz72asrwCIsHaqqhPtDFjz8g8_E

Extracted

Family

xworm

Version

5.0

C2

httpss.myvnc.com:1907

Mutex

xWIArEKzuXpfRVkJ

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family

quasar

Version

1.3.0.0

Botnet

TELEGRAM

C2

212.56.35.232:101

Mutex

QSR_MUTEX_L5s39LpA1y9H79tL6D

Attributes
  • encryption_key

    oBOMHICrtHceojCPrnpp

  • install_name

    svchost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svchosta

  • subdirectory

    media

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://176.113.115.7/mine/random.exe

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://176.113.115.7/mine/random.exe

Extracted

Family

amadey

Version

5.33

Botnet

06bcb9

C2

http://195.82.146.131

Attributes
  • install_dir

    06a5c50e21

  • install_file

    tgvazx.exe

  • strings_key

    1861b156ffe931ec912bb17b5ff77a36

  • url_paths

    /h8ejjcsDs/index.php

rc4.plain

Targets

    • Target

      random.exe

    • Size

      5.5MB

    • MD5

      8aa52be570da2efe4885957e29b89538

    • SHA1

      2ad2e47c307b34d9a593e21dfe0dba723c110b3d

    • SHA256

      a66ad1178645f946e6e9b98c181e660df8bf87c38c88b220a24f35f0406cc107

    • SHA512

      c685dd857057879a6ff8bdb7279511e940babeb7f358a94e33fea308ac0bd8ceb6d2bcd758dd38eada0995bb96f910d5728c1431286f0875d2ca392b0ca7308e

    • SSDEEP

      98304:ZDpKjlkbVghclaJ8RhIc1pX452gw8QzbRwm5H3gzIFNM2w+1R:yxQZFzQQ/5HvX9

    • Amadey

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

    • Amadey family

    • Detect Vidar Stealer

    • Detect Xworm Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Skuld family

    • Skuld stealer

      An info stealer written in Go lang.

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Downloads MZ/PE file

    • Sets service image path in registry

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • 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

    • Drops startup file

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks