General

  • Target

    Payment_Copy.docx.vbs

  • Size

    8KB

  • Sample

    231016-s8rw4abf82

  • MD5

    dc81bc3a9413ca5f8b6a0ad6bef2f271

  • SHA1

    d815331071d10edaf3e17aca21138de366a33c2a

  • SHA256

    c6ffe2653e2a4c3b4aaabae7700ab09a83591e2a2df884ad7beede92dda4080b

  • SHA512

    734567a4fbac86783699f8de0056f289e43cd8ef7114bb6443f05a2603abfda16fdcdc12b4d6c18cd4de7d993aae5ae20d9917337e9b2202b9315b170ae6b507

  • SSDEEP

    192:florgiorNohgUcigdOhgyC+lseKlwUGUiHijHifHiDLHiDAut:dQ+ygAgSgXBhHGaDOMA

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.martur.cl
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    (57reRWWw5dj

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.martur.cl
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    (57reRWWw5dj

Extracted

Family

wshrat

C2

http://chongmei33.publicvm.com:7045

Targets

    • Target

      Payment_Copy.docx.vbs

    • Size

      8KB

    • MD5

      dc81bc3a9413ca5f8b6a0ad6bef2f271

    • SHA1

      d815331071d10edaf3e17aca21138de366a33c2a

    • SHA256

      c6ffe2653e2a4c3b4aaabae7700ab09a83591e2a2df884ad7beede92dda4080b

    • SHA512

      734567a4fbac86783699f8de0056f289e43cd8ef7114bb6443f05a2603abfda16fdcdc12b4d6c18cd4de7d993aae5ae20d9917337e9b2202b9315b170ae6b507

    • SSDEEP

      192:florgiorNohgUcigdOhgyC+lseKlwUGUiHijHifHiDLHiDAut:dQ+ygAgSgXBhHGaDOMA

    • AgentTesla

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

    • WSHRAT

      WSHRAT is a variant of Houdini worm and has vbs and js variants.

    • WSHRAT payload

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • 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 Enterprise v15

Tasks