Analysis

  • max time kernel
    60s
  • max time network
    116s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    28-03-2023 07:10

General

  • Target

    85d29bf17d2b11754deb221731a9ea4c.exe

  • Size

    791KB

  • MD5

    85d29bf17d2b11754deb221731a9ea4c

  • SHA1

    eb91d80b64db46e71784db25ff2380003d3a1b9c

  • SHA256

    770a7455fc0ac683cf1ea5f64c528ea717871300c1ff20e29cf34276acd0528d

  • SHA512

    4d4a53e359289b097e8aa7debd3dee172b6244690641571a6ea53ddf72b316ad0cd224c7946d952c95b63932b2b535a00bce7c4b2448c188fbe4da0cfd422a5f

  • SSDEEP

    12288:ZAwKdJVZz5ddOa01PTqcy3jP3fBfzUnFBDxqF7ETu6jQRwcndJoTgfz8uf:OTVZ93O1qcyNAVK7ytby+gl

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.valvulasthermovalve.cl
  • Port:
    21
  • Username:
    cva19491@valvulasthermovalve.cl
  • Password:
    LILKOOLL14!!

Signatures

  • AgentTesla

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\85d29bf17d2b11754deb221731a9ea4c.exe
    "C:\Users\Admin\AppData\Local\Temp\85d29bf17d2b11754deb221731a9ea4c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1108
    • C:\Users\Admin\AppData\Local\Temp\85d29bf17d2b11754deb221731a9ea4c.exe
      "C:\Users\Admin\AppData\Local\Temp\85d29bf17d2b11754deb221731a9ea4c.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1432

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1108-54-0x0000000000B10000-0x0000000000BDC000-memory.dmp
    Filesize

    816KB

  • memory/1108-55-0x0000000004BB0000-0x0000000004BF0000-memory.dmp
    Filesize

    256KB

  • memory/1108-56-0x0000000000730000-0x0000000000750000-memory.dmp
    Filesize

    128KB

  • memory/1108-57-0x0000000000940000-0x000000000094C000-memory.dmp
    Filesize

    48KB

  • memory/1108-58-0x0000000005820000-0x00000000058CA000-memory.dmp
    Filesize

    680KB

  • memory/1108-59-0x0000000000AD0000-0x0000000000B02000-memory.dmp
    Filesize

    200KB

  • memory/1432-60-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1432-61-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1432-62-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1432-63-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1432-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/1432-65-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1432-67-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1432-69-0x0000000000400000-0x0000000000430000-memory.dmp
    Filesize

    192KB

  • memory/1432-70-0x0000000004840000-0x0000000004880000-memory.dmp
    Filesize

    256KB

  • memory/1432-88-0x0000000004840000-0x0000000004880000-memory.dmp
    Filesize

    256KB