General

  • Target

    6c8b4064ab664708e7723cb1aad27294_JaffaCakes118

  • Size

    395KB

  • Sample

    240523-2x6qjsce5z

  • MD5

    6c8b4064ab664708e7723cb1aad27294

  • SHA1

    2d525542f95fdc8a4a93793f5780101ae65ce5fa

  • SHA256

    ee279c6b7a4debbd93a6aea65ad694d611fd54865a4af2afe304a284d13fa633

  • SHA512

    57eabf864ebaa9b1265b23077c0b11c1b79a7f27e632ff8c755a153765423119526fc63077452bd452c4b9236668c8ce331b4fd96fb751e215e8e73939cd70a0

  • SSDEEP

    6144:wJZj3XBjlkq27zgxR3pB/PtLwag4j1vkF5vaa2HjUSpu:4zZo7cv5BXdwafkFVaRH

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1160330796:AAF3SAwgW-OTi9M5kDhSZUlENwhKRvFOWe8/sendDocument

Targets

    • Target

      6c8b4064ab664708e7723cb1aad27294_JaffaCakes118

    • Size

      395KB

    • MD5

      6c8b4064ab664708e7723cb1aad27294

    • SHA1

      2d525542f95fdc8a4a93793f5780101ae65ce5fa

    • SHA256

      ee279c6b7a4debbd93a6aea65ad694d611fd54865a4af2afe304a284d13fa633

    • SHA512

      57eabf864ebaa9b1265b23077c0b11c1b79a7f27e632ff8c755a153765423119526fc63077452bd452c4b9236668c8ce331b4fd96fb751e215e8e73939cd70a0

    • SSDEEP

      6144:wJZj3XBjlkq27zgxR3pB/PtLwag4j1vkF5vaa2HjUSpu:4zZo7cv5BXdwafkFVaRH

    • AgentTesla

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

    • AgentTesla payload

    • Executes dropped EXE

    • 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 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Tasks