General

  • Target

    er.exe

  • Size

    4.0MB

  • Sample

    210304-nyf4mexz86

  • MD5

    160dd398272fd4fdf51f410adad9a51b

  • SHA1

    f49489e7960978dd7dbb1784b0c67b1fd540926d

  • SHA256

    2bd6567a2a3321019d204a42484e626c8b98ecbaf068b66833fc15a737c1f42e

  • SHA512

    8e9d8eadc207bc4ee11d7971a7dc75f1cacd94579c03f406128c302e85c50c0f58e5723d3da74f0c0049b18cdde1842ef6658dbee5d897154377fb39fae4ead4

Malware Config

Extracted

Family

metasploit

Version

windows/single_exec

Targets

    • Target

      er.exe

    • Size

      4.0MB

    • MD5

      160dd398272fd4fdf51f410adad9a51b

    • SHA1

      f49489e7960978dd7dbb1784b0c67b1fd540926d

    • SHA256

      2bd6567a2a3321019d204a42484e626c8b98ecbaf068b66833fc15a737c1f42e

    • SHA512

      8e9d8eadc207bc4ee11d7971a7dc75f1cacd94579c03f406128c302e85c50c0f58e5723d3da74f0c0049b18cdde1842ef6658dbee5d897154377fb39fae4ead4

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba Payload

    • MetaSploit

      Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Windows security bypass

    • Modifies boot configuration data using bcdedit

    • Blocklisted process makes network request

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Possible attempt to disable PatchGuard

      Rootkits can use kernel patching to embed themselves in an operating system.

    • UPX packed file

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Windows security modification

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Execution

Command-Line Interface

1
T1059

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Disabling Security Tools

2
T1089

Modify Registry

4
T1112

Impair Defenses

1
T1562

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Tasks