Analysis

  • max time kernel
    144s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    28-07-2021 06:03

General

  • Target

    0bf4527dbce68cdb15e9d7fab6229a3e.exe

  • Size

    701KB

  • MD5

    beee421f170be70ca4efd8b81940e18b

  • SHA1

    a124ee2194c9970275f2454899a5025f2887d9ad

  • SHA256

    407a175b3d9735477868deec5907b8e9703abcd76799529d9e2354bdddde550b

  • SHA512

    24e06abbf300b6da57e9617da07a89a404696cc6f97213d2c503ce2c90d49cc8186e2c8dfc49b9fc6172a69675b00ab298a34617bc1ae821af0a3854fe315893

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    PbQ)ubh9

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • CustAttr .NET packer 1 IoCs

    Detects CustAttr .NET packer in memory.

  • 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.

  • 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 SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe
    "C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe
      "C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe"
      2⤵
        PID:1332
      • C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe
        "C:\Users\Admin\AppData\Local\Temp\0bf4527dbce68cdb15e9d7fab6229a3e.exe"
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1492

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\0bf4527dbce68cdb15e9d7fab6229a3e.exe.log

      MD5

      c3cc52ccca9ff2b6fa8d267fc350ca6b

      SHA1

      a68d4028333296d222e4afd75dea36fdc98d05f3

      SHA256

      3125b6071e2d78f575a06ed7ac32a83d9262ae64d1fa81ac43e8bfc1ef157c0e

      SHA512

      b0c7b2501b1a2c559795a9d178c0bbda0e03cbdbaaa2c4330ac1202a55373fe1b742078adcfa915bd6e805565a2daa6d35d64ef7a14ffcd09069f9ea6a691cc7

    • memory/1096-123-0x0000000007430000-0x000000000746D000-memory.dmp

      Filesize

      244KB

    • memory/1096-116-0x00000000056A0000-0x00000000056A1000-memory.dmp

      Filesize

      4KB

    • memory/1096-118-0x0000000005240000-0x0000000005241000-memory.dmp

      Filesize

      4KB

    • memory/1096-119-0x0000000002BD0000-0x0000000002BD1000-memory.dmp

      Filesize

      4KB

    • memory/1096-120-0x0000000005140000-0x0000000005141000-memory.dmp

      Filesize

      4KB

    • memory/1096-121-0x0000000005680000-0x000000000568B000-memory.dmp

      Filesize

      44KB

    • memory/1096-117-0x00000000051A0000-0x00000000051A1000-memory.dmp

      Filesize

      4KB

    • memory/1096-114-0x0000000000790000-0x0000000000791000-memory.dmp

      Filesize

      4KB

    • memory/1096-122-0x00000000073A0000-0x0000000007416000-memory.dmp

      Filesize

      472KB

    • memory/1492-125-0x000000000043749E-mapping.dmp

    • memory/1492-124-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1492-131-0x0000000005320000-0x000000000581E000-memory.dmp

      Filesize

      5.0MB

    • memory/1492-132-0x0000000005420000-0x0000000005421000-memory.dmp

      Filesize

      4KB

    • memory/1492-133-0x0000000006010000-0x0000000006011000-memory.dmp

      Filesize

      4KB

    • memory/1492-136-0x0000000005320000-0x000000000581E000-memory.dmp

      Filesize

      5.0MB