General

  • Target

    RNSM00445.7z

  • Size

    75.5MB

  • Sample

    241015-zzbbbaxcje

  • MD5

    2a11257b78bea540918b9c40ff548cb5

  • SHA1

    95d20e83bef39db0e27baa8fbe12a777053fb1f9

  • SHA256

    883acfd4ad62d3ea6cef9b00e4e1f098950cc78162b3f3edaf054658014e6211

  • SHA512

    fcd607c8106729f593cc69a37d9f74780efce89fcc6d6ac4b635f9553cee4ead508b08f8832aa5997dfb5dda0a193ba4f5a7de4384e81f240ecf7a167edcf50c

  • SSDEEP

    1572864:0EwITRE6KW06owLwRDXynpQ+3vZuY3+YxZm+PxWu93zCjwJlJsS:xRTRn9oXCpr3EY1ZD5ZRzCMkS

Malware Config

Extracted

Family

nullmixer

C2

http://motiwa.xyz/

Extracted

Family

redline

Botnet

NewAni

C2

changidwia.xyz:80

Extracted

Family

redline

Botnet

Cana

C2

176.111.174.254:56328

Targets

    • Target

      RNSM00445.7z

    • Size

      75.5MB

    • MD5

      2a11257b78bea540918b9c40ff548cb5

    • SHA1

      95d20e83bef39db0e27baa8fbe12a777053fb1f9

    • SHA256

      883acfd4ad62d3ea6cef9b00e4e1f098950cc78162b3f3edaf054658014e6211

    • SHA512

      fcd607c8106729f593cc69a37d9f74780efce89fcc6d6ac4b635f9553cee4ead508b08f8832aa5997dfb5dda0a193ba4f5a7de4384e81f240ecf7a167edcf50c

    • SSDEEP

      1572864:0EwITRE6KW06owLwRDXynpQ+3vZuY3+YxZm+PxWu93zCjwJlJsS:xRTRn9oXCpr3EY1ZD5ZRzCMkS

    • GandCrab payload

    • Gandcrab

      Gandcrab is a Trojan horse that encrypts files on a computer.

    • Modifies WinLogon for persistence

    • Modifies Windows Defender Real-time Protection settings

    • NullMixer

      NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • SectopRAT

      SectopRAT is a remote access trojan first seen in November 2019.

    • SectopRAT payload

    • Urelas

      Urelas is a trojan targeting card games.

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • Renames multiple (1422) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Drops file in Drivers directory

    • Manipulates Digital Signatures

      Attackers can apply techniques such as modifying certain DLL exports to make their binary seem valid.

    • Stops running service(s)

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • 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.

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks