General

  • Target

    96549660921224a50d9866e190900eb0616454b6bc3d8d2becd6fc3bf38c6723

  • Size

    2.2MB

  • Sample

    240523-yqagzsed54

  • MD5

    55b0d8f2a9e560f808c55aacab475264

  • SHA1

    70348c525a61a934671c2c35f3e798d71141502e

  • SHA256

    96549660921224a50d9866e190900eb0616454b6bc3d8d2becd6fc3bf38c6723

  • SHA512

    8428af0c94783682adc7ea01920c35027e33e1ff765c62b00b5d601549c5eb78a647876572d588be90d30f2cb2a32858b6f100579eb73242b6cc08b4655f212a

  • SSDEEP

    49152:yjA0q0TDiuLI4n5D8OUtN3hMrJzdBd3ko6e3Rvq0twB+Qpd:Wq0Pn98OUr3h0dBdUo6ehv5twMQpd

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      P.I.xlsm.bat

    • Size

      3.0MB

    • MD5

      345fd8e60b26a425db12a3b4f03db858

    • SHA1

      b3815d7d301866fbdd472168dc63d88e3bdb93a6

    • SHA256

      84011035b4c05eefeeb6cb35acffb479b26d1c18c8876f3eb881a222c0ee7d49

    • SHA512

      42bba166fb3b1e12c998522a7e622e8894c0efacacbca5e457be4d0fa0559ccfa614e7e547ad3f49f3688a1e93654416ffe3ea9b07d97fa94513d4b7f61e791e

    • SSDEEP

      49152:uVSpD/97Zd7hGxfTyS+HA02ZDMuDzaKoZ0FsCc:V

    • AgentTesla

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

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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.

    • 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

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Modify Registry

1
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

Tasks