Analysis

  • max time kernel
    143s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2023 01:09

General

  • Target

    1f64a1fccb2ccf2a7b3b8bd3fd40b3c3.exe

  • Size

    1.1MB

  • MD5

    1f64a1fccb2ccf2a7b3b8bd3fd40b3c3

  • SHA1

    abf690443bf75433e86c565cc7c0ffb3ee56d67c

  • SHA256

    1fbfc85cb0739606eda3aa7ee754fd438ad9b24c4d674dac6db8864de954ef62

  • SHA512

    93e8fc26e969753a9f5c8799aa3a9a79a719cce655fc91c4f344a8cba9dc32537583574dcac55213177d8bbfdc6a6ed23a604b1406c4d4ad79ea9a124277ac4b

  • SSDEEP

    12288:9zlh2ZZpCKmnA8ebZj5/dDXPUAvoZnW5lHH4Qsex0XAByK9dbIMXVXN1edOO4ADs:Z29mnA8IZj5/dDlkWf494cg59rrKx4

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @#yandel@>20$

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @#yandel@>20$

Signatures

  • AgentTesla

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

  • AgentTesla payload 6 IoCs
  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • Drops file in Drivers directory 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f64a1fccb2ccf2a7b3b8bd3fd40b3c3.exe
    "C:\Users\Admin\AppData\Local\Temp\1f64a1fccb2ccf2a7b3b8bd3fd40b3c3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2328
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BavckLWtTsWaPN" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF8B1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2728
    • C:\Users\Admin\AppData\Local\Temp\1f64a1fccb2ccf2a7b3b8bd3fd40b3c3.exe
      "C:\Users\Admin\AppData\Local\Temp\1f64a1fccb2ccf2a7b3b8bd3fd40b3c3.exe"
      2⤵
        PID:2816
      • C:\Users\Admin\AppData\Local\Temp\1f64a1fccb2ccf2a7b3b8bd3fd40b3c3.exe
        "C:\Users\Admin\AppData\Local\Temp\1f64a1fccb2ccf2a7b3b8bd3fd40b3c3.exe"
        2⤵
        • Drops file in Drivers directory
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:2592

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpF8B1.tmp

      Filesize

      1KB

      MD5

      5e044b63d0cf02ae08bf13de237cd13b

      SHA1

      99278c04bda98fa9c37f34c17259724c4b538a53

      SHA256

      d31ca1e9fae66178da7f5989e2a3b35b909e51358015a6c319e2e6b52dd33af4

      SHA512

      bbd07fc93bda00db69e1ae7e9a8460d4d5f4a2e7bf3cd35f2b903f2e475354b1c976088698f7c223599619214688ff6071c34417c48a075a430f5672ba7b59cd

    • memory/2328-0-0x0000000000170000-0x0000000000294000-memory.dmp

      Filesize

      1.1MB

    • memory/2328-1-0x0000000074BB0000-0x000000007529E000-memory.dmp

      Filesize

      6.9MB

    • memory/2328-2-0x00000000050E0000-0x0000000005120000-memory.dmp

      Filesize

      256KB

    • memory/2328-3-0x0000000000330000-0x0000000000342000-memory.dmp

      Filesize

      72KB

    • memory/2328-4-0x0000000074BB0000-0x000000007529E000-memory.dmp

      Filesize

      6.9MB

    • memory/2328-5-0x00000000050E0000-0x0000000005120000-memory.dmp

      Filesize

      256KB

    • memory/2328-6-0x00000000059C0000-0x0000000005A66000-memory.dmp

      Filesize

      664KB

    • memory/2328-7-0x0000000000690000-0x00000000006E6000-memory.dmp

      Filesize

      344KB

    • memory/2328-28-0x0000000074BB0000-0x000000007529E000-memory.dmp

      Filesize

      6.9MB

    • memory/2592-17-0x0000000000400000-0x0000000000456000-memory.dmp

      Filesize

      344KB

    • memory/2592-19-0x0000000000400000-0x0000000000456000-memory.dmp

      Filesize

      344KB

    • memory/2592-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2592-15-0x0000000000400000-0x0000000000456000-memory.dmp

      Filesize

      344KB

    • memory/2592-22-0x0000000000400000-0x0000000000456000-memory.dmp

      Filesize

      344KB

    • memory/2592-24-0x0000000000400000-0x0000000000456000-memory.dmp

      Filesize

      344KB

    • memory/2592-26-0x0000000000400000-0x0000000000456000-memory.dmp

      Filesize

      344KB

    • memory/2592-27-0x0000000074BB0000-0x000000007529E000-memory.dmp

      Filesize

      6.9MB

    • memory/2592-13-0x0000000000400000-0x0000000000456000-memory.dmp

      Filesize

      344KB

    • memory/2592-29-0x0000000004A20000-0x0000000004A60000-memory.dmp

      Filesize

      256KB

    • memory/2592-30-0x0000000074BB0000-0x000000007529E000-memory.dmp

      Filesize

      6.9MB

    • memory/2592-31-0x0000000004A20000-0x0000000004A60000-memory.dmp

      Filesize

      256KB

    • memory/2592-33-0x0000000004A20000-0x0000000004A60000-memory.dmp

      Filesize

      256KB