General

  • Target

    intervpnmix2_1.exe

  • Size

    9.0MB

  • Sample

    210116-mj148bbez2

  • MD5

    aa1515279a03f6726d34f9f97ad3ecce

  • SHA1

    4a73a63691bbdf15af411ca1bd9c7bfc85110f32

  • SHA256

    dc1338766ff9398ff8d68c77e43143a4028ff389ff0231bd941869add11241b0

  • SHA512

    157e283e27613601c84692f85125d62c6301db16447eccc72a5118e11913689ab4194d140f0dd99ad0d7776618c8ea301c13e304491ba4277142ebcb36ed8153

Malware Config

Targets

    • Target

      intervpnmix2_1.exe

    • Size

      9.0MB

    • MD5

      aa1515279a03f6726d34f9f97ad3ecce

    • SHA1

      4a73a63691bbdf15af411ca1bd9c7bfc85110f32

    • SHA256

      dc1338766ff9398ff8d68c77e43143a4028ff389ff0231bd941869add11241b0

    • SHA512

      157e283e27613601c84692f85125d62c6301db16447eccc72a5118e11913689ab4194d140f0dd99ad0d7776618c8ea301c13e304491ba4277142ebcb36ed8153

    • CryptBot

      A C++ stealer distributed widely in bundle with other software.

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

    • Executes dropped EXE

    • Checks BIOS information in registry

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

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

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

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks