Analysis

  • max time kernel
    125s
  • max time network
    125s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    21-10-2021 09:45

General

  • Target

    016d9078762cb89a6043b916f3634374.exe

  • Size

    493KB

  • MD5

    016d9078762cb89a6043b916f3634374

  • SHA1

    439da9cb1d337363ffe9c3a362480f8c2dd4edf5

  • SHA256

    2d27046c2b2fb934bedac546cc0dcea64fd788baff5eccfcf52b430df453a6ae

  • SHA512

    a98052faca220bc29c374f0405a226c15b48ffac174b411b0880e5f89ee80e841e638c3e5fe15a12f5ceb03bd7b0d3543fc0dc78a0ad256bed1c343a379bba54

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.croatiahunt.com
  • Port:
    587
  • Username:
    info@croatiahunt.com
  • Password:
    VilaVrgade852

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\016d9078762cb89a6043b916f3634374.exe
    "C:\Users\Admin\AppData\Local\Temp\016d9078762cb89a6043b916f3634374.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\Users\Admin\AppData\Local\Temp\016d9078762cb89a6043b916f3634374.exe
      "C:\Users\Admin\AppData\Local\Temp\016d9078762cb89a6043b916f3634374.exe"
      2⤵
        PID:820
      • C:\Users\Admin\AppData\Local\Temp\016d9078762cb89a6043b916f3634374.exe
        "C:\Users\Admin\AppData\Local\Temp\016d9078762cb89a6043b916f3634374.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:772

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\016d9078762cb89a6043b916f3634374.exe.log
      MD5

      0c2899d7c6746f42d5bbe088c777f94c

      SHA1

      622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

      SHA256

      5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

      SHA512

      ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

    • memory/772-124-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/772-136-0x0000000005360000-0x000000000585E000-memory.dmp
      Filesize

      5.0MB

    • memory/772-133-0x00000000060C0000-0x00000000060C1000-memory.dmp
      Filesize

      4KB

    • memory/772-132-0x0000000005800000-0x0000000005801000-memory.dmp
      Filesize

      4KB

    • memory/772-131-0x0000000005360000-0x000000000585E000-memory.dmp
      Filesize

      5.0MB

    • memory/772-125-0x00000000004375AE-mapping.dmp
    • memory/1828-119-0x00000000052C0000-0x00000000052C1000-memory.dmp
      Filesize

      4KB

    • memory/1828-123-0x0000000008EA0000-0x0000000008EF8000-memory.dmp
      Filesize

      352KB

    • memory/1828-122-0x0000000008D00000-0x0000000008D01000-memory.dmp
      Filesize

      4KB

    • memory/1828-121-0x0000000005750000-0x0000000005757000-memory.dmp
      Filesize

      28KB

    • memory/1828-120-0x0000000005270000-0x000000000576E000-memory.dmp
      Filesize

      5.0MB

    • memory/1828-115-0x0000000000A00000-0x0000000000A01000-memory.dmp
      Filesize

      4KB

    • memory/1828-118-0x0000000005310000-0x0000000005311000-memory.dmp
      Filesize

      4KB

    • memory/1828-117-0x0000000005770000-0x0000000005771000-memory.dmp
      Filesize

      4KB