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Analysis

  • max time kernel
    127s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2022, 10:00

General

  • Target

    09275.rtf

  • Size

    18KB

  • MD5

    335d4b762415e79ecdf6267625ddf3d0

  • SHA1

    a22edece64e92a06714fef96fd19ac367ed9b7c6

  • SHA256

    3f7a2bb1fec9ba3d939367d1ebccf666711e3ca4feda0501d40cf6760e7cc706

  • SHA512

    266a345f4adf044d3b15fe1582c2ce73676c6619dac8fd8b383864b264ba3c3612398e62a42b971e2b783cfab8d421816131d44094f0276e2975f033cd68423c

  • SSDEEP

    384:t+dxfIzsBNgwpwvrXI16jQcyvpF1WH89d4c:W5BCwiv7ItHpFdf4c

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.valvulasthermovalve.cl
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    LILKOOLL14!!

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.valvulasthermovalve.cl/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    LILKOOLL14!!

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\09275.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1632
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1112
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:1304
      • C:\Users\Admin\AppData\Roaming\damianonrtlj69831.exe
        "C:\Users\Admin\AppData\Roaming\damianonrtlj69831.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1592
        • C:\Users\Admin\AppData\Roaming\damianonrtlj69831.exe
          "C:\Users\Admin\AppData\Roaming\damianonrtlj69831.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • outlook_office_path
          • outlook_win_path
          PID:1016

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\damianonrtlj69831.exe

      Filesize

      1.1MB

      MD5

      d94078ed71ebf1207e912f034f4299ad

      SHA1

      c9c98ba63de1553e4f191ad6ce191080aadf1bbc

      SHA256

      ca996291d4ae9a2e2dc94525ca9755984d8cf1d75dcc035e01a2394912edf575

      SHA512

      9b15c591db6a113dfc0346c2d7691f81183fa60ea4cae1942f7f998189c96ce018ca9d7149b0afa90223bf36ed8760d8ac4ef78dba5a584df5208eaf40db7be9

    • C:\Users\Admin\AppData\Roaming\damianonrtlj69831.exe

      Filesize

      1.1MB

      MD5

      d94078ed71ebf1207e912f034f4299ad

      SHA1

      c9c98ba63de1553e4f191ad6ce191080aadf1bbc

      SHA256

      ca996291d4ae9a2e2dc94525ca9755984d8cf1d75dcc035e01a2394912edf575

      SHA512

      9b15c591db6a113dfc0346c2d7691f81183fa60ea4cae1942f7f998189c96ce018ca9d7149b0afa90223bf36ed8760d8ac4ef78dba5a584df5208eaf40db7be9

    • C:\Users\Admin\AppData\Roaming\damianonrtlj69831.exe

      Filesize

      1.1MB

      MD5

      d94078ed71ebf1207e912f034f4299ad

      SHA1

      c9c98ba63de1553e4f191ad6ce191080aadf1bbc

      SHA256

      ca996291d4ae9a2e2dc94525ca9755984d8cf1d75dcc035e01a2394912edf575

      SHA512

      9b15c591db6a113dfc0346c2d7691f81183fa60ea4cae1942f7f998189c96ce018ca9d7149b0afa90223bf36ed8760d8ac4ef78dba5a584df5208eaf40db7be9

    • \Users\Admin\AppData\Roaming\damianonrtlj69831.exe

      Filesize

      1.1MB

      MD5

      d94078ed71ebf1207e912f034f4299ad

      SHA1

      c9c98ba63de1553e4f191ad6ce191080aadf1bbc

      SHA256

      ca996291d4ae9a2e2dc94525ca9755984d8cf1d75dcc035e01a2394912edf575

      SHA512

      9b15c591db6a113dfc0346c2d7691f81183fa60ea4cae1942f7f998189c96ce018ca9d7149b0afa90223bf36ed8760d8ac4ef78dba5a584df5208eaf40db7be9

    • \Users\Admin\AppData\Roaming\damianonrtlj69831.exe

      Filesize

      1.1MB

      MD5

      d94078ed71ebf1207e912f034f4299ad

      SHA1

      c9c98ba63de1553e4f191ad6ce191080aadf1bbc

      SHA256

      ca996291d4ae9a2e2dc94525ca9755984d8cf1d75dcc035e01a2394912edf575

      SHA512

      9b15c591db6a113dfc0346c2d7691f81183fa60ea4cae1942f7f998189c96ce018ca9d7149b0afa90223bf36ed8760d8ac4ef78dba5a584df5208eaf40db7be9

    • memory/1016-73-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/1016-78-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/1016-77-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/1016-76-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/1016-74-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/1112-69-0x000007FEFBCA1000-0x000007FEFBCA3000-memory.dmp

      Filesize

      8KB

    • memory/1592-65-0x0000000000080000-0x0000000000192000-memory.dmp

      Filesize

      1.1MB

    • memory/1592-70-0x0000000000570000-0x000000000057C000-memory.dmp

      Filesize

      48KB

    • memory/1592-71-0x0000000005D80000-0x0000000005E12000-memory.dmp

      Filesize

      584KB

    • memory/1592-72-0x00000000041C0000-0x00000000041FA000-memory.dmp

      Filesize

      232KB

    • memory/1592-67-0x0000000000460000-0x000000000047A000-memory.dmp

      Filesize

      104KB

    • memory/1632-54-0x00000000725F1000-0x00000000725F4000-memory.dmp

      Filesize

      12KB

    • memory/1632-58-0x000000007105D000-0x0000000071068000-memory.dmp

      Filesize

      44KB

    • memory/1632-57-0x0000000076091000-0x0000000076093000-memory.dmp

      Filesize

      8KB

    • memory/1632-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1632-55-0x0000000070071000-0x0000000070073000-memory.dmp

      Filesize

      8KB

    • memory/1632-81-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1632-82-0x000000007105D000-0x0000000071068000-memory.dmp

      Filesize

      44KB