Analysis

  • max time kernel
    152s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 19:38

General

  • Target

    FATTURA E CONSEGNE.exe

  • Size

    509KB

  • MD5

    c3e5e47de044708a5db025ee0ce0a5e0

  • SHA1

    267099acf5da2bd39600802e11e8f8987659d5e1

  • SHA256

    69fd444f0eb7bb59be2d6c832b345ec4ba7dfbb1195611770339f43cfd4bd19c

  • SHA512

    28635b697cb8d8f926418b273c20820c331e1735e719e42d7fec4bd88bdff11fe0cad23ef698ffb1be2a471a3b76c52b03a6e8a0a0cc62684b9bb3bb4335858c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.fridec.com
  • Port:
    587
  • Username:
    montse.varas@fridec.com
  • Password:
    @zOmvs]eL!$*

Signatures

  • AgentTesla

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

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • AgentTesla Payload 2 IoCs
  • rezer0 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FATTURA E CONSEGNE.exe
    "C:\Users\Admin\AppData\Local\Temp\FATTURA E CONSEGNE.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:580
    • C:\Users\Admin\AppData\Local\Temp\FATTURA E CONSEGNE.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2408
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1616

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\FATTURA E CONSEGNE.exe.log
      MD5

      b4f7a6a57cb46d94b72410eb6a6d45a9

      SHA1

      69f3596ffa027202d391444b769ceea0ae14c5f7

      SHA256

      23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

      SHA512

      be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

    • memory/580-9-0x000000000A490000-0x000000000A491000-memory.dmp
      Filesize

      4KB

    • memory/580-1-0x0000000000D20000-0x0000000000D21000-memory.dmp
      Filesize

      4KB

    • memory/580-4-0x0000000008350000-0x0000000008351000-memory.dmp
      Filesize

      4KB

    • memory/580-5-0x0000000007FF0000-0x0000000007FF1000-memory.dmp
      Filesize

      4KB

    • memory/580-6-0x0000000005070000-0x0000000005071000-memory.dmp
      Filesize

      4KB

    • memory/580-7-0x0000000007FE0000-0x0000000007FE3000-memory.dmp
      Filesize

      12KB

    • memory/580-3-0x0000000005670000-0x00000000056CE000-memory.dmp
      Filesize

      376KB

    • memory/580-0-0x0000000073F80000-0x000000007466E000-memory.dmp
      Filesize

      6.9MB

    • memory/580-8-0x000000000A380000-0x000000000A3D3000-memory.dmp
      Filesize

      332KB

    • memory/1616-21-0x0000000000000000-mapping.dmp
    • memory/2408-10-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/2408-11-0x000000000044C94E-mapping.dmp
    • memory/2408-14-0x0000000073F80000-0x000000007466E000-memory.dmp
      Filesize

      6.9MB

    • memory/2408-19-0x0000000005A10000-0x0000000005A11000-memory.dmp
      Filesize

      4KB

    • memory/2408-20-0x00000000064C0000-0x00000000064C1000-memory.dmp
      Filesize

      4KB