Overview

overview

10

Static

static

1

OptiFine_1...I4.jar

windows10-ltsc 2021-x64

10

Sharing

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General

  • Target

    OptiFine_1.19.4_HD_U_I4.jar

  • Size

    6.7MB

  • Sample

    241031-afzr5avaqh

  • MD5

    2e58bf463ec7e9964fe381a5afc17da1

  • SHA1

    40a44c00d4f06ba82e97b8eb71aab3823f4e9d93

  • SHA256

    2c010bcae341cf1003c194a4b566a0cb0c8dff2443d2f9fbd9e7a2d9abc8af6a

  • SHA512

    94d0673370168322cc6ba5ae7bc9ad5d5c4246aa10f8929239dedc25639255c807c32ea248ee751c42aed9ca61cf37ab391d7d3a9ba57bc643e091c9ef4009d1

  • SSDEEP

    98304:+4T54pxq3gbAuFu0Lw6jEKuBj036dh1KyMH9vPMDNgPjDbHA:+4TCxq3gtFuiWKufdh1jA9H7LPg

Score
10/10
asyncratquasardefaultoffice04discoverymotwphishingratspywarestealertrojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808
Mutex

fuHFQVarselr

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

10.127.1.2:1604

Mutex

93b40a09-fbd7-4b29-8423-560b40061e4f

Attributes
  • encryption_key

    55EAC2BE7559DA6721E45ED8C2349D6EFC3C9EE2

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      OptiFine_1.19.4_HD_U_I4.jar

    • Size

      6.7MB

    • MD5

      2e58bf463ec7e9964fe381a5afc17da1

    • SHA1

      40a44c00d4f06ba82e97b8eb71aab3823f4e9d93

    • SHA256

      2c010bcae341cf1003c194a4b566a0cb0c8dff2443d2f9fbd9e7a2d9abc8af6a

    • SHA512

      94d0673370168322cc6ba5ae7bc9ad5d5c4246aa10f8929239dedc25639255c807c32ea248ee751c42aed9ca61cf37ab391d7d3a9ba57bc643e091c9ef4009d1

    • SSDEEP

      98304:+4T54pxq3gbAuFu0Lw6jEKuBj036dh1KyMH9vPMDNgPjDbHA:+4TCxq3gtFuiWKufdh1jA9H7LPg

    Score
    10/10
    asyncratquasardefaultoffice04discoverymotwphishingratspywarestealertrojan

    • AsyncRat

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

      ratasyncrat

    • Asyncrat family

      asyncrat

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • Async RAT payload

      rat

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Legitimate hosting services abused for malware hosting/C2

    • Mark of the Web detected: This indicates that the page was originally saved or cloned.

      phishingmotw

    • Probable phishing domain

    behavioral1

MITRE ATT&CK Enterprise v15

Tasks