Overview

overview

10

Static

static

10

AA_v3.exe

windows7-x64

10

AA_v3.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    AA_v3.exe

  • Size

    798KB

  • Sample

    240805-18s36azgnj

  • MD5

    90aadf2247149996ae443e2c82af3730

  • SHA1

    050b7eba825412b24e3f02d76d7da5ae97e10502

  • SHA256

    ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a

  • SHA512

    eec32bb82b230dd309c29712e72d4469250e651449e127479d178eddbafd5a46ec8048a753bc2c1a0fdf1dc3ed72a9453ca66fb49cbf0f95a12704e5427182be

  • SSDEEP

    24576:Uj0JJ4p/A4npt3XojeQG5EtzRtO7GvmDguXd:UjoJ4u4zojegylDN

Score
10/10
ammyyadminflawedammyybootkitdiscoverypersistencetrojan

Malware Config

Targets

    • Target

      AA_v3.exe

    • Size

      798KB

    • MD5

      90aadf2247149996ae443e2c82af3730

    • SHA1

      050b7eba825412b24e3f02d76d7da5ae97e10502

    • SHA256

      ee573647477339784dcef81024de1be1762833a20e5cc2b89a93e47d05b86b6a

    • SHA512

      eec32bb82b230dd309c29712e72d4469250e651449e127479d178eddbafd5a46ec8048a753bc2c1a0fdf1dc3ed72a9453ca66fb49cbf0f95a12704e5427182be

    • SSDEEP

      24576:Uj0JJ4p/A4npt3XojeQG5EtzRtO7GvmDguXd:UjoJ4u4zojegylDN

    Score
    10/10
    flawedammyybootkitdiscoverypersistencetrojan

    • FlawedAmmyy RAT

      Remote-access trojan based on leaked code for the Ammyy remote admin software.

      trojanflawedammyy

    • Blocklisted process makes network request

    • Modifies RDP port number used by Windows

    • Checks computer location settings

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

    • Loads dropped DLL

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks