General

  • Target

    ff5c8360c9f87054525970c5aeb707cc177291904206b5c18b09e0e6e2ce7420

  • Size

    2.4MB

  • Sample

    240703-j7smkayblk

  • MD5

    43a78a6987bf599db55f41bd3cd1d011

  • SHA1

    b55a8d60de946c9151de60df2225dce89c95be43

  • SHA256

    ff5c8360c9f87054525970c5aeb707cc177291904206b5c18b09e0e6e2ce7420

  • SHA512

    808312620b6c2517876aa4f744a53be817fa9b0b5cdcb681943da060652957519c20e9f533f602dc6cdc8a0068a01e526cff797156f67b0f350f38c7b55bbbf4

  • SSDEEP

    49152:Temt0UCcKZDPedhvpY6aUOisJzakKlfpazVxg4F2OhRoZqiwIG:NucKVERevisqlfMv1QO/oZJq

Malware Config

Extracted

Family

stealc

Botnet

jony

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

      ff5c8360c9f87054525970c5aeb707cc177291904206b5c18b09e0e6e2ce7420

    • Size

      2.4MB

    • MD5

      43a78a6987bf599db55f41bd3cd1d011

    • SHA1

      b55a8d60de946c9151de60df2225dce89c95be43

    • SHA256

      ff5c8360c9f87054525970c5aeb707cc177291904206b5c18b09e0e6e2ce7420

    • SHA512

      808312620b6c2517876aa4f744a53be817fa9b0b5cdcb681943da060652957519c20e9f533f602dc6cdc8a0068a01e526cff797156f67b0f350f38c7b55bbbf4

    • SSDEEP

      49152:Temt0UCcKZDPedhvpY6aUOisJzakKlfpazVxg4F2OhRoZqiwIG:NucKVERevisqlfMv1QO/oZJq

    • 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