General

  • Target

    06e441f7f93dafd9c3425532db0161fb_JaffaCakes118

  • Size

    452KB

  • Sample

    240429-fv31zsbf9z

  • MD5

    06e441f7f93dafd9c3425532db0161fb

  • SHA1

    0040475885bb35c31aa9430c307e6369e0636061

  • SHA256

    7db5974f16db1242a0212877eaf417100c33251811963573ac3eff2b4864fd6f

  • SHA512

    a32c56a9f35b8d83fe27291ad0c7ddb9e4e855f9eda4d167113fa485089d27c5caf81b455f18e02eff0c0a12a4d4822b8a308bcb9a6a2b13739be3e2e7722cf9

  • SSDEEP

    12288:AcfdLAuFDEiGXSH20+PRYI3tlO5Fmw6G2ztsWiMjWz:AAAuFIiGCHsPSIdKF5A6WiMU

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.yitaipackaging.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    22799213

Targets

    • Target

      purchase order.exe

    • Size

      975KB

    • MD5

      63c86be77aff4ce6c9b8b05457fc99b9

    • SHA1

      5d3442c88ec022d2029d91633375e7e19bb60084

    • SHA256

      f458911cad980b38b8c73ec5b8755b9b5d0d1ff6906ed78da4d5f6ec79b5acf8

    • SHA512

      9c0892973d6b484a231f22d4c085fa797c815ef8e0c9c061249b44436886eba6e6cccc185977965451a778edc1ead34051595a68d77873bdf3e680ceba525fdb

    • SSDEEP

      24576:KZLUMT+pWX9juJoJeZLUMT+pWX9juJoJmz:KWw+00Ww+0cz

    • AgentTesla

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

    • AgentTesla payload

    • Drops file in Drivers directory

    • 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

2
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

3
T1552.001

Credentials in Registry

1
T1552.002

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

4
T1005

Email Collection

1
T1114

Tasks