General

  • Target

    b42e7395d548094719753ce21cafc064

  • Size

    500KB

  • Sample

    240305-jpkt1aah27

  • MD5

    b42e7395d548094719753ce21cafc064

  • SHA1

    6baed6fc826f81aa77cbd71945c46d44c04718e4

  • SHA256

    95f5e8a8f81cc22aa687cf82e0d6cadbf130f25018fa0097710927ed40d2f939

  • SHA512

    52d741889f330dddfa97897c3b642fbd7a05364b1122e794a4deab0d4c2214f6629b2e03727f5422161fff4d83e82b93866339623917b88e8123fc271a6a4557

  • SSDEEP

    12288:G3s06nf8okk8kGfCIcgiLTXWswMGMv0MSPmIQWe:BPfkkZ8diLjXzGySPm7We

Malware Config

Targets

    • Target

      b42e7395d548094719753ce21cafc064

    • Size

      500KB

    • MD5

      b42e7395d548094719753ce21cafc064

    • SHA1

      6baed6fc826f81aa77cbd71945c46d44c04718e4

    • SHA256

      95f5e8a8f81cc22aa687cf82e0d6cadbf130f25018fa0097710927ed40d2f939

    • SHA512

      52d741889f330dddfa97897c3b642fbd7a05364b1122e794a4deab0d4c2214f6629b2e03727f5422161fff4d83e82b93866339623917b88e8123fc271a6a4557

    • SSDEEP

      12288:G3s06nf8okk8kGfCIcgiLTXWswMGMv0MSPmIQWe:BPfkkZ8diLjXzGySPm7We

    • ISR Stealer

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

    • ISR Stealer payload

    • 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.

    • 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

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
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