General

  • Target

    30bbc309dddebd1a5640668ecb389849

  • Size

    700KB

  • Sample

    231231-lcxzxacea2

  • MD5

    30bbc309dddebd1a5640668ecb389849

  • SHA1

    73024487befa71389c4644c1c468dc0bdc4d6d30

  • SHA256

    a5eb4c027297ecaf9bf022f9c77b743fbe5515d8802c285e5bf1d3c163cd53f2

  • SHA512

    8c7d2ff517127db305e0fcb4366ae11439212c7363c6a6089efa17d2d1b8d48dd98a77393b6e26a05db2e91f6fbed1d736d2326b8286508efa887c7548a6c60b

  • SSDEEP

    12288:i0AoEJrM2OEX+67rqc8oXNhMt/YmdXtyiWxJV1qf0uEAkF1pfxjG3uQNI1S:MxJMgze0ukPJC/CS

Malware Config

Targets

    • Target

      30bbc309dddebd1a5640668ecb389849

    • Size

      700KB

    • MD5

      30bbc309dddebd1a5640668ecb389849

    • SHA1

      73024487befa71389c4644c1c468dc0bdc4d6d30

    • SHA256

      a5eb4c027297ecaf9bf022f9c77b743fbe5515d8802c285e5bf1d3c163cd53f2

    • SHA512

      8c7d2ff517127db305e0fcb4366ae11439212c7363c6a6089efa17d2d1b8d48dd98a77393b6e26a05db2e91f6fbed1d736d2326b8286508efa887c7548a6c60b

    • SSDEEP

      12288:i0AoEJrM2OEX+67rqc8oXNhMt/YmdXtyiWxJV1qf0uEAkF1pfxjG3uQNI1S:MxJMgze0ukPJC/CS

    • ISR Stealer

      ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

    • ISR Stealer payload

    • Modifies firewall policy service

    • Adds policy Run key to start application

    • Modifies Installed Components in the registry

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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.

    • Adds Run key to start application

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Defense Evasion

Modify Registry

5
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Tasks