General

  • Target

    Compiled-Fix

  • Size

    172KB

  • Sample

    241223-srk28atjbs

  • MD5

    be9d218d604d1a8d3babaaf1f2d15a3a

  • SHA1

    c4506665acb7ca2f8b0b703000145a5565fde0e3

  • SHA256

    5d81121b6369105d2886f975f4b8ed3aeed03551f470c1edd464957d9ba63a89

  • SHA512

    97a3d447af1ac79370677ae6c836a4c4f705f2488392cbe1d6ef218e2391e62707886f6051f05204972a86227cdcbfa4565b5fe69eac4b7e85142550b574b068

  • SSDEEP

    3072:oVz7eznSahQHZ2AGSEZbOh4nczkmYUNF+rteS9V1PHMvxgZNs9V1PHMv4epApOLp:msNxApOL/saqkPV9FemLtcIDSsmwH9Xt

Malware Config

Extracted

Language
ps1
Source
URLs
ps1.dropper

https://pastebin.com/raw/zaCgrR02

Extracted

Family

quasar

Version

1.4.0

Botnet

v15.4.1 | Venom

C2

dofucks.com:12482

private115.duckdns.org:12482

Mutex

adf10731-c83d-4166-9137-39d0b1e48856

Attributes
  • encryption_key

    C84CB6134701741C5122A14FACDB67C8CFA9C0AB

  • install_name

    .exe

  • log_directory

    $sxr-Logs

  • reconnect_delay

    3000

  • startup_key

    $sxr-seroxen

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

C2

127.0.0.1:4449

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes
  • delay

    1

  • install

    true

  • install_file

    dwad.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      Compiled-Fix

    • Size

      172KB

    • MD5

      be9d218d604d1a8d3babaaf1f2d15a3a

    • SHA1

      c4506665acb7ca2f8b0b703000145a5565fde0e3

    • SHA256

      5d81121b6369105d2886f975f4b8ed3aeed03551f470c1edd464957d9ba63a89

    • SHA512

      97a3d447af1ac79370677ae6c836a4c4f705f2488392cbe1d6ef218e2391e62707886f6051f05204972a86227cdcbfa4565b5fe69eac4b7e85142550b574b068

    • SSDEEP

      3072:oVz7eznSahQHZ2AGSEZbOh4nczkmYUNF+rteS9V1PHMvxgZNs9V1PHMv4epApOLp:msNxApOL/saqkPV9FemLtcIDSsmwH9Xt

    • AsyncRat

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

    • Asyncrat family

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • UAC bypass

    • Async RAT payload

    • Blocklisted process makes network request

    • A potential corporate email address has been identified in the URL: [email protected]

    • Executes dropped EXE

    • 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.

    • Checks whether UAC is enabled

    • Hide Artifacts: Hidden Window

      Windows that would typically be displayed when an application carries out an operation can be hidden.

    • Legitimate hosting services abused for malware hosting/C2

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks