General

  • Target

    Invoice.pdf.lnk

  • Size

    2KB

  • Sample

    231201-qthc1aab61

  • MD5

    66f5251fe4fc349f298c82e8202240ac

  • SHA1

    b1e901e269720b9907ec05850300b61c18053795

  • SHA256

    dd6426a7b0c6af78d31e3868b60fa4311e16094e27b553978505a95e93eca22a

  • SHA512

    0187a44d7f7b9f9d1cbb62c7a41fbc2dfd66da31d3d144fb85cb54d290fac602fe85103d2e739287ccd1ef759b1f55a55f3c8de91dbee4f3a61e5cf4f387b9f3

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://uploaddeimagens.com.br/images/004/674/364/original/vbsss.jpg?1700999331

exe.dropper

https://uploaddeimagens.com.br/images/004/674/364/original/vbsss.jpg?1700999331

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot6524734704:AAGq3YLDL6NzQcuHVLGgk3AVoRXLAEs79Dc/

Targets

    • Target

      Invoice.pdf.lnk

    • Size

      2KB

    • MD5

      66f5251fe4fc349f298c82e8202240ac

    • SHA1

      b1e901e269720b9907ec05850300b61c18053795

    • SHA256

      dd6426a7b0c6af78d31e3868b60fa4311e16094e27b553978505a95e93eca22a

    • SHA512

      0187a44d7f7b9f9d1cbb62c7a41fbc2dfd66da31d3d144fb85cb54d290fac602fe85103d2e739287ccd1ef759b1f55a55f3c8de91dbee4f3a61e5cf4f387b9f3

    • AgentTesla

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

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Drops startup file

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • 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