Analysis

  • max time kernel
    112s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    27-07-2021 16:08

General

  • Target

    attached TT PDF.exe

  • Size

    789KB

  • MD5

    891f97173c0a90ed3d336e303908b38a

  • SHA1

    49a4e10a12d5aec836cc2b1cfcfce3784446929b

  • SHA256

    2f25825c264a731f59bdee108cdd8fdf062501404952294c7fdbd4e46d4ccc7e

  • SHA512

    b5c3168d1ded6eeee2b364f9d0aa3e45f60c630d353d6d1178f84e784783def83ed9512069fdb04821150cb04344f0b2e17088033ecddb15709615bca947eed3

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.esquiresweaters.com
  • Port:
    587
  • Username:
    imam@esquiresweaters.com
  • Password:
    Esquire@#2078

Signatures

  • AgentTesla

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

  • AgentTesla Payload 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.

  • 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 WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\attached TT PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\attached TT PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:508
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VzKaRFUJOv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1B59.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3744
    • C:\Users\Admin\AppData\Local\Temp\attached TT PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\attached TT PDF.exe"
      2⤵
        PID:2132
      • C:\Users\Admin\AppData\Local\Temp\attached TT PDF.exe
        "C:\Users\Admin\AppData\Local\Temp\attached TT PDF.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3180

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\attached TT PDF.exe.log
      MD5

      c3cc52ccca9ff2b6fa8d267fc350ca6b

      SHA1

      a68d4028333296d222e4afd75dea36fdc98d05f3

      SHA256

      3125b6071e2d78f575a06ed7ac32a83d9262ae64d1fa81ac43e8bfc1ef157c0e

      SHA512

      b0c7b2501b1a2c559795a9d178c0bbda0e03cbdbaaa2c4330ac1202a55373fe1b742078adcfa915bd6e805565a2daa6d35d64ef7a14ffcd09069f9ea6a691cc7

    • C:\Users\Admin\AppData\Local\Temp\tmp1B59.tmp
      MD5

      e418da51cfc664739cff2aeaedce429e

      SHA1

      4cd76af0b9a9aa492dfb0559bf290e162945d65e

      SHA256

      2231e4c37f8775a54ee6e9016b9ab72e370196a95f482df8574f808fc494401c

      SHA512

      d8b1248cded0fedc43afabb87e06c0fa47d9099ea371e88b42c9ffe643d9fb9619a7f44bf40e59da1625b0512df4f213699953fa2f334247d79bd61452243733

    • memory/508-123-0x0000000001220000-0x00000000012A3000-memory.dmp
      Filesize

      524KB

    • memory/508-124-0x00000000012B0000-0x00000000012EE000-memory.dmp
      Filesize

      248KB

    • memory/508-119-0x000000000A890000-0x000000000A891000-memory.dmp
      Filesize

      4KB

    • memory/508-120-0x00000000053C0000-0x00000000053C1000-memory.dmp
      Filesize

      4KB

    • memory/508-121-0x0000000004D30000-0x0000000004D31000-memory.dmp
      Filesize

      4KB

    • memory/508-122-0x00000000053E0000-0x00000000053FB000-memory.dmp
      Filesize

      108KB

    • memory/508-114-0x0000000000920000-0x0000000000921000-memory.dmp
      Filesize

      4KB

    • memory/508-118-0x000000000A750000-0x000000000A751000-memory.dmp
      Filesize

      4KB

    • memory/508-116-0x0000000005190000-0x000000000524B000-memory.dmp
      Filesize

      748KB

    • memory/508-117-0x000000000AC50000-0x000000000AC51000-memory.dmp
      Filesize

      4KB

    • memory/3180-127-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/3180-128-0x000000000043766E-mapping.dmp
    • memory/3180-134-0x00000000054D0000-0x00000000059CE000-memory.dmp
      Filesize

      5.0MB

    • memory/3180-135-0x0000000005950000-0x0000000005951000-memory.dmp
      Filesize

      4KB

    • memory/3180-136-0x0000000006230000-0x0000000006231000-memory.dmp
      Filesize

      4KB

    • memory/3744-125-0x0000000000000000-mapping.dmp