General

  • Target

    REQUEST FOR QUOTATION.xls

  • Size

    1.3MB

  • Sample

    230627-pa79mseh41

  • MD5

    4bdecf933cf87cac4f8aed299fdcd572

  • SHA1

    f51de953af94d96108b1f8269aa91274de64e4dd

  • SHA256

    5278127c9e67bad3f8f2470c767aac3c0801cbbcf7c68c1d2e57a37e989b83ed

  • SHA512

    4458aff6ce0e3e85668b5aead589716d49e62fb449f940126f7c4b80b2566d274e7ca23a1c02bb70eb3ffa41dfeaf89217de46bd3bf921eb39fbf8dd28d817fb

  • SSDEEP

    24576:84xqLKYjW4DLwBkLjVcDLwBk9iw17IpuLLkDePd6ACmdg1rl7FeYp:bQLKYjWPgjVboX1sMkQCmdql5e

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      REQUEST FOR QUOTATION.xls

    • Size

      1.3MB

    • MD5

      4bdecf933cf87cac4f8aed299fdcd572

    • SHA1

      f51de953af94d96108b1f8269aa91274de64e4dd

    • SHA256

      5278127c9e67bad3f8f2470c767aac3c0801cbbcf7c68c1d2e57a37e989b83ed

    • SHA512

      4458aff6ce0e3e85668b5aead589716d49e62fb449f940126f7c4b80b2566d274e7ca23a1c02bb70eb3ffa41dfeaf89217de46bd3bf921eb39fbf8dd28d817fb

    • SSDEEP

      24576:84xqLKYjW4DLwBkLjVcDLwBk9iw17IpuLLkDePd6ACmdg1rl7FeYp:bQLKYjWPgjVboX1sMkQCmdql5e

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks