Resubmissions

18-05-2024 13:20

240518-qk6n8sdc7t 8

18-05-2024 12:52

240518-p4kqfacd77 10

General

  • Target

    https://bumida-cloud.andalsoftware.com/updater.exe

  • Sample

    240518-p4kqfacd77

Malware Config

Extracted

Family

asyncrat

Version

Xoshnaw

Botnet

1877

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:1877

nerakar.duckdns.org:6606

nerakar.duckdns.org:7707

nerakar.duckdns.org:8808

nerakar.duckdns.org:1877

Mutex

3YeYWvX7BQIk

Attributes
  • delay

    3

  • install

    true

  • install_file

    chroma.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      https://bumida-cloud.andalsoftware.com/updater.exe

    • AsyncRat

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

    • Async RAT payload

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Looks up external IP address via web service

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

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

5
T1082

Process Discovery

1
T1057

Collection

Data from Local System

2
T1005

Tasks