Resubmissions

05-06-2023 18:53

230605-xj4a2sab96 10

30-05-2023 22:35

230530-2hphqacc6v 10

General

  • Target

    https:// bitbucket .org/mounmeinlylo/rikirollin/downloads/tomPayload.vbs

  • Sample

    230605-xj4a2sab96

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:2016

Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.gic.co.th
  • Port:
    587
  • Username:
    edu@gic.co.th
  • Password:
    K4z7b3m
  • Email To:
    lindahuber@yandex.com

Targets

    • Target

      https:// bitbucket .org/mounmeinlylo/rikirollin/downloads/tomPayload.vbs

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • AsyncRat

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

    • Async RAT payload

    • Blocklisted process makes network request

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Drops Chrome extension

    • Legitimate hosting services abused for malware hosting/C2

    • 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

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Collection

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Tasks