Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    19-10-2021 03:28

General

  • Target

    Inquiry,png.exe

  • Size

    274KB

  • MD5

    214314acb198f14903fb16538450fe69

  • SHA1

    d28b62d92aa73da2662f52a20ecb896fbf248806

  • SHA256

    fa708dbd323666bef72779702e67ea18192727f8d881ed8cd295619b892e6f1b

  • SHA512

    c6a578141238fc0ebeba108f4c325b4d6fa1d2ab37304281253e94f4d7927ebb22fab5bcd411688feed159f57bd5a2cbebcf0200f1e5d29b773392e9be4523b8

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.autokarma.ro
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    auto123#

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Loads dropped DLL 1 IoCs
  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Inquiry,png.exe
    "C:\Users\Admin\AppData\Local\Temp\Inquiry,png.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:844
    • C:\Users\Admin\AppData\Local\Temp\Inquiry,png.exe
      "C:\Users\Admin\AppData\Local\Temp\Inquiry,png.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:620

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsdBA7A.tmp\oaolxjpjc.dll

    MD5

    fb556c16d4ab04252f71268c986a5c43

    SHA1

    5d8857c0fa4543642286072337af96d8374494a9

    SHA256

    7c818c689d9194c90a1ecdd7838cd59ff216971cad20caf8e091d9fa48c7f3fe

    SHA512

    adbfaf25b5937b934dc920436492faab186f0d5a64a57cb027da88a2c9fb4c8b65740713ff232400a908729ae4a48360a2ba79cce86237b9a79d2a1d840d7fc6

  • memory/620-55-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/620-56-0x000000000040188B-mapping.dmp

  • memory/620-58-0x0000000001D90000-0x0000000001DC7000-memory.dmp

    Filesize

    220KB

  • memory/620-61-0x0000000004681000-0x0000000004682000-memory.dmp

    Filesize

    4KB

  • memory/620-60-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/620-62-0x0000000004682000-0x0000000004683000-memory.dmp

    Filesize

    4KB

  • memory/620-63-0x0000000004683000-0x0000000004684000-memory.dmp

    Filesize

    4KB

  • memory/620-64-0x0000000004684000-0x0000000004685000-memory.dmp

    Filesize

    4KB

  • memory/844-53-0x0000000074F81000-0x0000000074F83000-memory.dmp

    Filesize

    8KB