Overview

overview

10

Static

static

1

28c368d40f...18.exe

windows7-x64

10

28c368d40f...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    28c368d40f35e3461b5d7e7987887da2_JaffaCakes118

  • Size

    1.3MB

  • Sample

    240706-tj4d9stgnk

  • MD5

    28c368d40f35e3461b5d7e7987887da2

  • SHA1

    24aac6a7faf1f297b36bc95893c2ec15c5603209

  • SHA256

    e0f85570bf59cccc44aeb4aa9346a90939ef2bcbe6dc9be0dc70cfe9098ff0c0

  • SHA512

    f77a7c05e5a2a949268279412fe546ec5ff0b8e040d1b91427fc82582fa1396833153c88b31f459dda8b6c1528022e046004cc351c6d7e1c9eda96424b642cee

  • SSDEEP

    24576:a53uhFou9ucgL6zN+YEugBMq1dQnkqQ51wEqyseQAeStZfi5Z5mI:a5+hF11lN+7ugB5QkqQ5CEq1VSPK5

Score
10/10
quasarofficespywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office

C2

135.181.241.49:111

135.181.241.49:2590
Mutex

utXr3KhqffAkjVnhUA

Attributes
  • encryption_key

    as8Kyh7GIWdsKpl9U8A9

  • install_name

    csrss.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    NET framework

  • subdirectory

    SubDir

Targets

    • Target

      28c368d40f35e3461b5d7e7987887da2_JaffaCakes118

    • Size

      1.3MB

    • MD5

      28c368d40f35e3461b5d7e7987887da2

    • SHA1

      24aac6a7faf1f297b36bc95893c2ec15c5603209

    • SHA256

      e0f85570bf59cccc44aeb4aa9346a90939ef2bcbe6dc9be0dc70cfe9098ff0c0

    • SHA512

      f77a7c05e5a2a949268279412fe546ec5ff0b8e040d1b91427fc82582fa1396833153c88b31f459dda8b6c1528022e046004cc351c6d7e1c9eda96424b642cee

    • SSDEEP

      24576:a53uhFou9ucgL6zN+YEugBMq1dQnkqQ51wEqyseQAeStZfi5Z5mI:a5+hF11lN+7ugB5QkqQ5CEq1VSPK5

    Score
    10/10
    quasarofficespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

    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