General

  • Target

    JaffaCakes118_76e6e924a78ee97b57efed024869a182

  • Size

    537KB

  • Sample

    250107-yxckxsylcn

  • MD5

    76e6e924a78ee97b57efed024869a182

  • SHA1

    62254805971c9dd385b1ebda243ca7425a035543

  • SHA256

    699ee69836ad492c5de30f0f38b2335517dd3257af66c196175f5d65a38203f0

  • SHA512

    eafae683f6fee198fdb1e2430ec442bda2b8562fba1736ee9bdf0ed0452940b142c8a1260e4ccaf3522a7ecea9b7a716b6677a0cc90e67f2ac4268d61a3d3baa

  • SSDEEP

    12288:MIc/zMh+Lv+Jiw/Ij2pEL+I3BwBICN2Hhh:Mj/oh+D+0we2pELFuZNAhh

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    webmail.karanex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Oi&-tmhj@d5v

Targets

    • Target

      JaffaCakes118_76e6e924a78ee97b57efed024869a182

    • Size

      537KB

    • MD5

      76e6e924a78ee97b57efed024869a182

    • SHA1

      62254805971c9dd385b1ebda243ca7425a035543

    • SHA256

      699ee69836ad492c5de30f0f38b2335517dd3257af66c196175f5d65a38203f0

    • SHA512

      eafae683f6fee198fdb1e2430ec442bda2b8562fba1736ee9bdf0ed0452940b142c8a1260e4ccaf3522a7ecea9b7a716b6677a0cc90e67f2ac4268d61a3d3baa

    • SSDEEP

      12288:MIc/zMh+Lv+Jiw/Ij2pEL+I3BwBICN2Hhh:Mj/oh+D+0we2pELFuZNAhh

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • Agenttesla family

    • AgentTesla payload

    • Looks for VirtualBox Guest Additions in registry

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Looks for VMWare Tools registry key

    • 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.

    • 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 user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses Microsoft Outlook profiles

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks