Resubmissions

28-11-2024 19:39

241128-yc84dstkfn 10

16-11-2024 19:52

241116-ylqcmssfqd 10

16-11-2024 17:56

241116-wjcyeszmht 10

General

  • Target

    New Text Document.exe.zip

  • Size

    1KB

  • Sample

    241128-yc84dstkfn

  • MD5

    f3910b212669210383b5efcd278818fe

  • SHA1

    1708977352c5b19d8c126797a34cd1d8eedcfd19

  • SHA256

    85b8d5214c0bc80b888c6a3404c2a371e3aaba32561d069f454b0af159015396

  • SHA512

    f6ab525df5e79d59f05ac7618de628e1e5bf956ce8db9add144214c2c8a64282a0ce79c46ca4b88c1f7754ab8cb7f0883a080e1096c9561edb1f455aff95b499

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

SGVP

C2

192.168.1.9:4782

150.129.206.176:4782

Ai-Sgvp-33452.portmap.host:33452

Mutex

a35ec7b7-5a95-4207-8f25-7af0a7847fa5

Attributes
  • encryption_key

    09BBDA8FF0524296F02F8F81158F33C0AA74D487

  • install_name

    User Application Data.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windowns Client Startup

  • subdirectory

    Quasar

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

14.243.221.170:2654

Mutex

a7b38fdd-192e-4e47-b9ba-ca9eb81cc7bd

Attributes
  • encryption_key

    8B9AD736E943A06EAF1321AD479071E83805704C

  • install_name

    Runtime Broker.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Runtime Broker

  • subdirectory

    SubDir

Extracted

Family

quasar

Version

1.4.1

Botnet

ZJEB

C2

VIPEEK1990-25013.portmap.host:25013

Mutex

ad21b115-2c1b-40cb-adba-a50736b76c21

Attributes
  • encryption_key

    3EBA8BC34FA983893A9B07B831E7CEB183F7492D

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Security Service

  • subdirectory

    SubDir

Extracted

Family

asyncrat

Botnet

Default

C2

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

forums-appliances.gl.at.ply.gg:1962

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain
aes.plain

Extracted

Family

mercurialgrabber

C2

https://discordapp.com/api/webhooks/1308883657456619530/0_Ad9EyrLZrIMKH4vjM6XHyvCJJtKddsiohDSyvCWZ8HIxpyNxmVJgrKb_zO-jqSHSO0

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

3.70.228.168:555

Mutex

bslxturcmlpmyqrv

Attributes
  • delay

    1

  • install

    true

  • install_file

    atat.exe

  • install_folder

    %AppData%

aes.plain
aes.plain

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

3.70.228.168:555

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

66.66.146.74:9511

Mutex

nwJFeGdDXcL2

Attributes
  • delay

    3

  • install

    true

  • install_file

    System32.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      New Text Document.exe.zip

    • Size

      1KB

    • MD5

      f3910b212669210383b5efcd278818fe

    • SHA1

      1708977352c5b19d8c126797a34cd1d8eedcfd19

    • SHA256

      85b8d5214c0bc80b888c6a3404c2a371e3aaba32561d069f454b0af159015396

    • SHA512

      f6ab525df5e79d59f05ac7618de628e1e5bf956ce8db9add144214c2c8a64282a0ce79c46ca4b88c1f7754ab8cb7f0883a080e1096c9561edb1f455aff95b499

    • AsyncRat

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

    • Asyncrat family

    • Detect Umbral payload

    • Mercurial Grabber Stealer

      Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

    • Mercurialgrabber family

    • Njrat family

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Umbral family

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

    • Async RAT payload

    • Enumerates VirtualBox registry keys

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

    • Looks for VirtualBox Guest Additions in registry

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Download via BitsAdmin

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Looks for VMWare Tools registry key

    • Modifies Windows Firewall

    • 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.

    • 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

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • 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.

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks