Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    230601-vm9acsfe32

  • MD5

    5ddcc9baa65b17926f2262a9fe530b93

  • SHA1

    6fa7fd0df2a9928b6c063fc03b10bdcd84e26008

  • SHA256

    9ce882116ae23f4d32f4937f2b61ca8deea0c476be41fdd3158dadc14335a45f

  • SHA512

    79fd0d0ff6115972017fef2c6feeddaf26db86bb69437ca431abd2ba35d4b6c249c7150f3969fd589006b2d3defa674c589610caee5a1585e50f027b06f6aa06

  • SSDEEP

    49152:+vaY52fyaSZOrPWluWBuGG5g5hPbRJ6KbR3LoGd/THHB72eh2NT:+vv52fyaSZOrPWluWBDG5g5hPbRJ6k

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

127.0.0.1:4782

Mutex

57af6279-a68f-4f70-9b6b-439dccca1ff4

Attributes
  • encryption_key

    1B9C51B90AB1DE21D6A313176E631A6295A0C2E6

  • install_name

    Memes.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    memes

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      5ddcc9baa65b17926f2262a9fe530b93

    • SHA1

      6fa7fd0df2a9928b6c063fc03b10bdcd84e26008

    • SHA256

      9ce882116ae23f4d32f4937f2b61ca8deea0c476be41fdd3158dadc14335a45f

    • SHA512

      79fd0d0ff6115972017fef2c6feeddaf26db86bb69437ca431abd2ba35d4b6c249c7150f3969fd589006b2d3defa674c589610caee5a1585e50f027b06f6aa06

    • SSDEEP

      49152:+vaY52fyaSZOrPWluWBuGG5g5hPbRJ6KbR3LoGd/THHB72eh2NT:+vv52fyaSZOrPWluWBDG5g5hPbRJ6k

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks