General

  • Target

    0421b28912b47fde34fb2b392452c49981524553352fbddde0e0584ec52b21bf

  • Size

    2.4MB

  • Sample

    240701-keytjsvdrj

  • MD5

    ea3e05eeb3b7ee4f1d64cb116e080348

  • SHA1

    71e0152c02d114d9c6928aa50ba0e539e4dfb5b4

  • SHA256

    0421b28912b47fde34fb2b392452c49981524553352fbddde0e0584ec52b21bf

  • SHA512

    197a1adc8b4f22e1408644c3ab23d3a2a9fd2b435ec3d32f923841cf475c58b9f5c4e2b77decfb19fabb8a2f2173cec15db46afcc8ca6e46186a03059d11ebbb

  • SSDEEP

    49152:S1tL8u45YfuWPJKg7/xUVzPmc73X3z1YmTGI583I0eOTahFGLiVhy3FrDP4:S1tL8b8X7/xUVzec7nhYmTGI4//iVsrE

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://85.28.47.4

Attributes
  • url_path

    /920475a59bac849d.php

Extracted

Family

amadey

Version

4.30

Botnet

4dd39d

C2

http://77.91.77.82

Attributes
  • install_dir

    ad40971b6b

  • install_file

    explorti.exe

  • strings_key

    a434973ad22def7137dbb5e059b7081e

  • url_paths

    /Hun4Ko/index.php

rc4.plain

Targets

    • Target

      0421b28912b47fde34fb2b392452c49981524553352fbddde0e0584ec52b21bf

    • Size

      2.4MB

    • MD5

      ea3e05eeb3b7ee4f1d64cb116e080348

    • SHA1

      71e0152c02d114d9c6928aa50ba0e539e4dfb5b4

    • SHA256

      0421b28912b47fde34fb2b392452c49981524553352fbddde0e0584ec52b21bf

    • SHA512

      197a1adc8b4f22e1408644c3ab23d3a2a9fd2b435ec3d32f923841cf475c58b9f5c4e2b77decfb19fabb8a2f2173cec15db46afcc8ca6e46186a03059d11ebbb

    • SSDEEP

      49152:S1tL8u45YfuWPJKg7/xUVzPmc73X3z1YmTGI583I0eOTahFGLiVhy3FrDP4:S1tL8b8X7/xUVzec7nhYmTGI4//iVsrE

    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • Stealc

      Stealc is an infostealer written in C++.

    • 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.

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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 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.

    • 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.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Unsecured Credentials

3
T1552

Credentials In Files

3
T1552.001

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Collection

Data from Local System

3
T1005

Tasks