Resubmissions

05-02-2025 05:35

250205-gabxfatmcq 10

03-02-2025 03:04

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03-02-2025 02:21

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03-02-2025 02:20

250203-csf7nawqbz 10

02-02-2025 21:21

250202-z7mdjsylhx 3

02-02-2025 18:40

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28-11-2024 02:19

241128-cr9sks1kht 10

General

  • Target

    Downloaders.zip

  • Size

    12KB

  • Sample

    250205-gabxfatmcq

  • MD5

    94fe78dc42e3403d06477f995770733c

  • SHA1

    ea6ba4a14bab2a976d62ea7ddd4940ec90560586

  • SHA256

    16930620b3b9166e0ffbd98f5d5b580c9919fd6ccdcc74fb996f53577f508267

  • SHA512

    add85726e7d2c69068381688fe84defe820f600e6214eff029042e3002e9f4ad52dde3b8bb28f4148cca1b950cd54d3999ce9e8445c4562d1ef2efdb1c6bdeff

  • SSDEEP

    384:6BfwcSEp9ZjKXSBIDv4dDfjlMJ7HWTHWB:efACW6Dr8HWTHWB

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

microsoftsys.ddns.net:4782

Mutex

67e0653d-eedf-4888-88ab-78e97eb2df27

Attributes
  • encryption_key

    23E5F6D22FEE1750D36544A759A48349B064BC34

  • install_name

    PerfWatson1.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    svhost

  • subdirectory

    KDOT

Extracted

Family

quasar

Version

1.4.1

Botnet

Test

C2

193.161.193.99:35184

67.205.154.243:35184

Mutex

9cabbafb-503b-49f1-ab22-adc756455c10

Attributes
  • encryption_key

    8B93C77AC1C58EA80A3327E9FD26246A79EF3B8E

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    MS Build Tools

  • subdirectory

    Microsoft-Build-Tools

Extracted

Family

quasar

Version

1.4.1

Botnet

Sigorta

C2

0.0.0.0:7777

13.48.129.198:7777

172.31.0.240:7777

Mutex

3b0592fc-14a1-4b8e-9803-69284ea2b6d2

Attributes
  • encryption_key

    E0BB4B221F7AADA73B9059B33A3CFF096A518413

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Extracted

Family

vidar

C2

https://t.me/sok33tn

https://steamcommunity.com/profiles/76561199824159981

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:136.0) Gecko/20100101 Firefox/136.0

Extracted

Family

redline

Botnet

letsgo

C2

45.67.231.189:29738

Attributes
  • auth_value

    3ad9a91465fa623a2f1ebd7f46ad2e47

Extracted

Family

asyncrat

Version

AsyncRAT

Botnet

test

C2

otrodia8912.gleeze.com:3333

Mutex

123

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

18.ip.gl.ply.gg:6606

18.ip.gl.ply.gg:7707

18.ip.gl.ply.gg:8808

18.ip.gl.ply.gg:9028

0.tcp.in.ngrok.io:18220

Mutex

HyFTucy74RnH

Attributes
  • delay

    3

  • install

    true

  • install_file

    Discord.exe

  • install_folder

    %AppData%

aes.plain
aes.plain

Extracted

Family

redline

Botnet

news

C2

45.144.28.250:26912

Attributes
  • auth_value

    e61921786ce9e1a6b356c82b24803f6d

Extracted

Family

xworm

C2

45.141.26.234:7000

0.tcp.in.ngrok.io:15792

91.92.249.37:9049

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    Java Update(32bit).exe

aes.plain

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office

C2

45.87.154.103:4782

45.87.154.103:5552

Mutex

xPl9J65qwy6F7knuP1

Attributes
  • encryption_key

    4LFQYlAO6OyQ4AmLb0N7

  • install_name

    csrss.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    NET framework

  • subdirectory

    SubDir

Extracted

Family

asyncrat

Botnet

Default

C2

technical-southwest.gl.at.ply.gg:58694

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

quasar

Version

1.4.1

Botnet

sigorta

C2

18.198.25.148:1604

Mutex

af7e773d-541a-46fd-87d3-06bb0a26aab9

Attributes
  • encryption_key

    D306945220105109C86E6E257D749CE885E76091

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Extracted

Family

quasar

Version

1.4.1

Botnet

bot

C2

wexos47815-61484.portmap.host:61484

Mutex

06e2bb33-968c-4ca7-97dc-f23fbd5c3092

Attributes
  • encryption_key

    8924CB3C9515DA437A37F5AE598376261E5528FC

  • install_name

    msinfo32.exe

  • log_directory

    Update

  • reconnect_delay

    3000

  • startup_key

    Discordupdate

  • subdirectory

    dll32

Extracted

Family

xworm

Version

5.0

C2

me-work.com:7008

Mutex

6WiNy50p5NrI46Pe

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target

      Downloaders.zip

    • Size

      12KB

    • MD5

      94fe78dc42e3403d06477f995770733c

    • SHA1

      ea6ba4a14bab2a976d62ea7ddd4940ec90560586

    • SHA256

      16930620b3b9166e0ffbd98f5d5b580c9919fd6ccdcc74fb996f53577f508267

    • SHA512

      add85726e7d2c69068381688fe84defe820f600e6214eff029042e3002e9f4ad52dde3b8bb28f4148cca1b950cd54d3999ce9e8445c4562d1ef2efdb1c6bdeff

    • SSDEEP

      384:6BfwcSEp9ZjKXSBIDv4dDfjlMJ7HWTHWB:efACW6Dr8HWTHWB

    • AsyncRat

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

    • Asyncrat family

    • Azorult

      An information stealer that was first discovered in 2016, targeting browsing history and passwords.

    • Azorult family

    • Detect Vidar Stealer

    • Detect Xworm Payload

    • Modifies WinLogon for persistence

    • NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

    • Nanocore family

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • RedLine

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

    • RedLine payload

    • Redline 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

    • Async RAT payload

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

    • Looks for VirtualBox Guest Additions in registry

    • Command and Scripting Interpreter: PowerShell

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

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Looks for VMWare Tools registry key

    • Modifies Windows Firewall

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Sets service image path in registry

    • Stops running service(s)

    • Checks BIOS information in registry

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

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Uses the VBS compiler for execution

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • 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.

    • Maps connected drives based on registry

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

    • Power Settings

      powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks