General

  • Target

    ea78eb07692fd1b6b2dc77298ef946ad826fa0235bde3b9c8522db4144562a8c

  • Size

    228KB

  • Sample

    230219-mx9d4sfd38

  • MD5

    04fce3dedf409f42a539a23e5e749c09

  • SHA1

    ba0fabfb467bc291784a9712c0716a85cad1d98f

  • SHA256

    ea78eb07692fd1b6b2dc77298ef946ad826fa0235bde3b9c8522db4144562a8c

  • SHA512

    8c2e06d8e7531497c6eba8ce7b01b7830fcd924ed3ba2a4bbd04846732b2505978afe0480af507eb10f65b19e11a23184326f920b56fcf071b9a82b71a98b128

  • SSDEEP

    3072:l33mPN8hLHhPU1sp2Eysh6/pqa9rwg2hREm9Y7uGMG+inxON8/dzfx:UPN8hLG1QHh6hqaN2hRDY7uzG5nh

Malware Config

Targets

    • Target

      ea78eb07692fd1b6b2dc77298ef946ad826fa0235bde3b9c8522db4144562a8c

    • Size

      228KB

    • MD5

      04fce3dedf409f42a539a23e5e749c09

    • SHA1

      ba0fabfb467bc291784a9712c0716a85cad1d98f

    • SHA256

      ea78eb07692fd1b6b2dc77298ef946ad826fa0235bde3b9c8522db4144562a8c

    • SHA512

      8c2e06d8e7531497c6eba8ce7b01b7830fcd924ed3ba2a4bbd04846732b2505978afe0480af507eb10f65b19e11a23184326f920b56fcf071b9a82b71a98b128

    • SSDEEP

      3072:l33mPN8hLHhPU1sp2Eysh6/pqa9rwg2hREm9Y7uGMG+inxON8/dzfx:UPN8hLG1QHh6hqaN2hRDY7uzG5nh

    • Detects Smokeloader packer

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

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

    • Downloads MZ/PE file

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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.

    • Uses the VBS compiler for execution

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks whether UAC is enabled

    • 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 SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Scripting

1
T1064

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks