General

  • Target

    a331d8169961a13fabdff8a264ff22687770e49794d63b9ac526055c8c929b1f

  • Size

    587KB

  • Sample

    231208-ccjmvagf45

  • MD5

    1ec275d581b7efc115153bb6a8915ba5

  • SHA1

    869acb34500897d1d9ebe06bf3f52eeaeb8c1eaa

  • SHA256

    a331d8169961a13fabdff8a264ff22687770e49794d63b9ac526055c8c929b1f

  • SHA512

    001f23bea4fd2ae52fd88d01f1d9bf9539954ac3e02ae7b7dd0dcc9f57d1c9ac89f242a0128d2126313bd3099c40eb622516081298d98b2d05abdb805785d1c5

  • SSDEEP

    6144:O8LxB3Qx8ayrbordY+VxuOveqXd0N+UMq1zSvEFWcbqX7TZPTvV3AWgbyG1aSmWD:GxPgUrdJE0Wx+YWc871PTWbHfmWPYMf

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    premium185.web-hosting.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    cooldown2013

Targets

    • Target

      a331d8169961a13fabdff8a264ff22687770e49794d63b9ac526055c8c929b1f

    • Size

      587KB

    • MD5

      1ec275d581b7efc115153bb6a8915ba5

    • SHA1

      869acb34500897d1d9ebe06bf3f52eeaeb8c1eaa

    • SHA256

      a331d8169961a13fabdff8a264ff22687770e49794d63b9ac526055c8c929b1f

    • SHA512

      001f23bea4fd2ae52fd88d01f1d9bf9539954ac3e02ae7b7dd0dcc9f57d1c9ac89f242a0128d2126313bd3099c40eb622516081298d98b2d05abdb805785d1c5

    • SSDEEP

      6144:O8LxB3Qx8ayrbordY+VxuOveqXd0N+UMq1zSvEFWcbqX7TZPTvV3AWgbyG1aSmWD:GxPgUrdJE0Wx+YWc871PTWbHfmWPYMf

    • AgentTesla

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Tasks