General

  • Target

    a6c09767f7b9b02156bd3e4f67764e79

  • Size

    922KB

  • Sample

    240226-tgqqdsae4v

  • MD5

    a6c09767f7b9b02156bd3e4f67764e79

  • SHA1

    5aa1d0515cd9ca1802c872cd8a9354b65cef7463

  • SHA256

    2183dd8a07c328ff41cf8fedc06bdc9ec8166d6c11691cb6d379899318d8e555

  • SHA512

    5f7072604303b4bea39a1c4751e09eb8399d9a10984ba2ddb699680145c952fb71d180e3e56135d30aa9639e9f5ff3899a3e58a2b7ab5d0ec38b88f94f17aa50

  • SSDEEP

    24576:g831bHyqkkvaWB5DQaL+YFswDsd8U0Gdb:g83xjfa65DeYeCUr

Malware Config

Extracted

Family

blustealer

Credentials

  • Protocol:
    smtp
  • Host:
    mail.masarprecast.com
  • Port:
    587
  • Username:
    info@masarprecast.com
  • Password:
    Masar@Shj06

Targets

    • Target

      a6c09767f7b9b02156bd3e4f67764e79

    • Size

      922KB

    • MD5

      a6c09767f7b9b02156bd3e4f67764e79

    • SHA1

      5aa1d0515cd9ca1802c872cd8a9354b65cef7463

    • SHA256

      2183dd8a07c328ff41cf8fedc06bdc9ec8166d6c11691cb6d379899318d8e555

    • SHA512

      5f7072604303b4bea39a1c4751e09eb8399d9a10984ba2ddb699680145c952fb71d180e3e56135d30aa9639e9f5ff3899a3e58a2b7ab5d0ec38b88f94f17aa50

    • SSDEEP

      24576:g831bHyqkkvaWB5DQaL+YFswDsd8U0Gdb:g83xjfa65DeYeCUr

    • A310logger

      A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

    • BluStealer

      A Modular information stealer written in Visual Basic.

    • A310logger Executable

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook profiles

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Tasks