Overview

overview

10

Static

static

10

b923f25375...fd.exe

windows7-x64

10

b923f25375...fd.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd

  • Size

    539KB

  • Sample

    240527-ceernscc5z

  • MD5

    c05d4bfb1c0e89db58fa981980938b76

  • SHA1

    12801b26c7b68224c8540ad08ad9387110d0fd46

  • SHA256

    b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd

  • SHA512

    926f6d48a44b7b56667e5b74dc3f7cff513f6ae02edd07df0ca2e5bc21690e5cdef77213307d8595a9a4127b582f5fc50aab0b97350e08b7486c33e4ada651c5

  • SSDEEP

    12288:unm5pMGjw5LSk0zWbzGsoYFAY7NvlDmmM:um5GGjw5LSk0zWbzRoYbvlSH

Score
10/10
quasarcontrolhostspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Controlhost

C2

121.43.158.106:4782

yc01h.11ychos.xyz:4782
Mutex

QSR_MUTEX_GFWuzMTNQOijYUKopR

Attributes
  • encryption_key

    Xym3BhtshKCyrit7obQT8XbWGz4i7Yw4

  • install_name

    Controlhost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Controlhost

  • subdirectory

    Controlhost

Targets

    • Target

      b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd

    • Size

      539KB

    • MD5

      c05d4bfb1c0e89db58fa981980938b76

    • SHA1

      12801b26c7b68224c8540ad08ad9387110d0fd46

    • SHA256

      b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd

    • SHA512

      926f6d48a44b7b56667e5b74dc3f7cff513f6ae02edd07df0ca2e5bc21690e5cdef77213307d8595a9a4127b582f5fc50aab0b97350e08b7486c33e4ada651c5

    • SSDEEP

      12288:unm5pMGjw5LSk0zWbzGsoYFAY7NvlDmmM:um5GGjw5LSk0zWbzRoYbvlSH

    Score
    10/10
    quasarcontrolhostspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables containing common artifacts observed in infostealers

    • Checks computer location settings

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks