General

  • Target

    973ec857c7555530ce8cfe919ff9257560c52102762568a1ff608a0b8c657995

  • Size

    1.8MB

  • Sample

    240326-rctkdaeg9t

  • MD5

    e3a1799f5605f2e7f964ed8b91ca4a1f

  • SHA1

    764eeb2e9d6aee5537024c9305560ce90324ab77

  • SHA256

    973ec857c7555530ce8cfe919ff9257560c52102762568a1ff608a0b8c657995

  • SHA512

    b9e6815ba83ae28783116691ee6d02e126bf0bd7a7a6883426c7eeb0106d52f1263b001147fdd8c6329a17cd26f63d036a828a32e80ed577698f9a3e8f8a20aa

  • SSDEEP

    24576:SAe4TmLyJWzks/BUyy0QCfCcXgEBLar5rRnrZtI7ltEM7oOwCZFMuJEp3HfFR:PePLx4WBUyyJcr21rRV+5tEGoOlfAR

Malware Config

Extracted

Family

amadey

Version

4.17

C2

http://185.215.113.32

Attributes
  • install_dir

    00c07260dc

  • install_file

    explorgu.exe

  • strings_key

    461809bd97c251ba0c0c8450c7055f1d

  • url_paths

    /yandex/index.php

rc4.plain

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Extracted

Family

amadey

Version

4.12

C2

http://185.172.128.19

Attributes
  • install_dir

    cd1f156d67

  • install_file

    Utsysc.exe

  • strings_key

    0dd3e5ee91b367c60c9e575983554b30

  • url_paths

    /ghsdh39s/index.php

rc4.plain

Targets

    • Target

      973ec857c7555530ce8cfe919ff9257560c52102762568a1ff608a0b8c657995

    • Size

      1.8MB

    • MD5

      e3a1799f5605f2e7f964ed8b91ca4a1f

    • SHA1

      764eeb2e9d6aee5537024c9305560ce90324ab77

    • SHA256

      973ec857c7555530ce8cfe919ff9257560c52102762568a1ff608a0b8c657995

    • SHA512

      b9e6815ba83ae28783116691ee6d02e126bf0bd7a7a6883426c7eeb0106d52f1263b001147fdd8c6329a17cd26f63d036a828a32e80ed577698f9a3e8f8a20aa

    • SSDEEP

      24576:SAe4TmLyJWzks/BUyy0QCfCcXgEBLar5rRnrZtI7ltEM7oOwCZFMuJEp3HfFR:PePLx4WBUyyJcr21rRV+5tEGoOlfAR

    • 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)

    • Blocklisted process makes network request

    • 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 WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of web browsers

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

    • UPX packed file

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

    • 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

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Unsecured Credentials

5
T1552

Credentials In Files

4
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Remote System Discovery

1
T1018

Collection

Data from Local System

5
T1005

Tasks