Overview

overview

10

Static

static

10

f181b5a4e2...15.exe

windows7-x64

10

f181b5a4e2...15.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    f181b5a4e2f0dc0cdf70e16c18e3466e436aae0bb96ef9b7dc24c7f219167115.exe

  • Size

    4.8MB

  • Sample

    240629-ccvecaycka

  • MD5

    1878733d5f2872169c33653a1ac9b623

  • SHA1

    738a018c2c738e93ffa6dce3932ee994aa7b11e3

  • SHA256

    f181b5a4e2f0dc0cdf70e16c18e3466e436aae0bb96ef9b7dc24c7f219167115

  • SHA512

    bc0d3a8a84efcc80b7768efc0b4071722bdfdbb63c9ea9b5e45089257ee527772dfb9f2a259d10abf8ecc54c1816917d5a527bbd87adca333543cb0f1610a4b9

  • SSDEEP

    98304:EQfNOLY2uXHEvr22SsaNYfdPBldt6+dBcjHtKRJ6BJIbzZ3IbzZY:eQHSM7jGImWK

Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

mx5.deitie.asia:4495

Mutex

ebbf737a-dddd-43dd-9b0a-74831302455d

Attributes
  • encryption_key

    F8516D89A1DFD78BD8FF575BBC3AE828B47FF0E1

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      f181b5a4e2f0dc0cdf70e16c18e3466e436aae0bb96ef9b7dc24c7f219167115.exe

    • Size

      4.8MB

    • MD5

      1878733d5f2872169c33653a1ac9b623

    • SHA1

      738a018c2c738e93ffa6dce3932ee994aa7b11e3

    • SHA256

      f181b5a4e2f0dc0cdf70e16c18e3466e436aae0bb96ef9b7dc24c7f219167115

    • SHA512

      bc0d3a8a84efcc80b7768efc0b4071722bdfdbb63c9ea9b5e45089257ee527772dfb9f2a259d10abf8ecc54c1816917d5a527bbd87adca333543cb0f1610a4b9

    • SSDEEP

      98304:EQfNOLY2uXHEvr22SsaNYfdPBldt6+dBcjHtKRJ6BJIbzZ3IbzZY:eQHSM7jGImWK

    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables containing common artifacts observed in infostealers

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks