General

  • Target

    803af90de603592cfdca6c9b6a8ffc39130a54dee552f0758f7ebf07ab327fc5

  • Size

    1.8MB

  • Sample

    240524-ljsc1acg39

  • MD5

    ce3ad5b4ca386cfb4b47daf322441283

  • SHA1

    85da5dabe5797323057aca3d1a2bb66a4d75ee81

  • SHA256

    803af90de603592cfdca6c9b6a8ffc39130a54dee552f0758f7ebf07ab327fc5

  • SHA512

    feb11585efaa97a51aec5722b002cf6edc686ce45eb211be874056d8b40940eb19d23d4ef761fc65f1b08e09599a7c881b9f3d6c58fead4fde1364df2b8bc9f7

  • SSDEEP

    24576:HynjN3fi9dEoZR814OEQjls30eTFxmT4i8eMOq52FOXuq01dKqOFUC:SjN3CdJ81nEQhs30evuqsrOFUC

Malware Config

Targets

    • Target

      803af90de603592cfdca6c9b6a8ffc39130a54dee552f0758f7ebf07ab327fc5

    • Size

      1.8MB

    • MD5

      ce3ad5b4ca386cfb4b47daf322441283

    • SHA1

      85da5dabe5797323057aca3d1a2bb66a4d75ee81

    • SHA256

      803af90de603592cfdca6c9b6a8ffc39130a54dee552f0758f7ebf07ab327fc5

    • SHA512

      feb11585efaa97a51aec5722b002cf6edc686ce45eb211be874056d8b40940eb19d23d4ef761fc65f1b08e09599a7c881b9f3d6c58fead4fde1364df2b8bc9f7

    • SSDEEP

      24576:HynjN3fi9dEoZR814OEQjls30eTFxmT4i8eMOq52FOXuq01dKqOFUC:SjN3CdJ81nEQhs30evuqsrOFUC

    • Modifies firewall policy service

    • PrivateLoader

      PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Drops startup file

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • 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.

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

2
T1059

PowerShell

2
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Virtualization/Sandbox Evasion

1
T1497

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Tasks