Analysis

  • max time kernel
    134s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    20-10-2021 06:28

General

  • Target

    SUPPLIERS REGISTRATION INFORMATION..doc

  • Size

    3KB

  • MD5

    f5f1fe4ee94ac02938249ee9cc9c0a44

  • SHA1

    1d9045ca278e5b71f20c04cb1c25a7ec320d743a

  • SHA256

    2c75bfb4292e3b3d773691d4cbff6c0108ef3b0b46046855a18bfd0edad6cbf4

  • SHA512

    87deb89abc0dfc24861037dbb64f806fe245af78d0657948838edec0d97d6709d1528bc5b7be2134ac7edb86f13ca9ed968a53a1d73df07a821a1184ec44858e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.privateemail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    FocusYourSEF@123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 5 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Office loads VBA resources, possible macro or embedded object present
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • 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 behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 37 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\SUPPLIERS REGISTRATION INFORMATION..doc"
    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:1276
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1824
    • 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:1288
      • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
        "C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1032
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SrmihJFzAeLaC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC0A1.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:520
        • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
          "C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe"
          3⤵
          • Executes dropped EXE
          PID:692
        • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
          "C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe"
          3⤵
          • Executes dropped EXE
          PID:1488
        • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
          "C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe"
          3⤵
          • Executes dropped EXE
          PID:1288
        • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
          "C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe"
          3⤵
          • Executes dropped EXE
          PID:1140
        • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
          "C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe"
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1612

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
      MD5

      975b9c5518e9839fd0c6ee927370edf2

      SHA1

      ffbb62338e71abd66194f617987384709695576f

      SHA256

      00840aafbfed2ff9e6eb973b88a44763482c97f88b1f073c2bb63d28c7405e1f

      SHA512

      db804a7b60810f8de0c947371f9bd1c480db4aca6c8d7fbde1932156e111811c4b16874a3fd8674e1df0ae0bf3c55928d85a557abf4510cc5d43300c50346e30

    • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
      MD5

      975b9c5518e9839fd0c6ee927370edf2

      SHA1

      ffbb62338e71abd66194f617987384709695576f

      SHA256

      00840aafbfed2ff9e6eb973b88a44763482c97f88b1f073c2bb63d28c7405e1f

      SHA512

      db804a7b60810f8de0c947371f9bd1c480db4aca6c8d7fbde1932156e111811c4b16874a3fd8674e1df0ae0bf3c55928d85a557abf4510cc5d43300c50346e30

    • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
      MD5

      975b9c5518e9839fd0c6ee927370edf2

      SHA1

      ffbb62338e71abd66194f617987384709695576f

      SHA256

      00840aafbfed2ff9e6eb973b88a44763482c97f88b1f073c2bb63d28c7405e1f

      SHA512

      db804a7b60810f8de0c947371f9bd1c480db4aca6c8d7fbde1932156e111811c4b16874a3fd8674e1df0ae0bf3c55928d85a557abf4510cc5d43300c50346e30

    • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
      MD5

      975b9c5518e9839fd0c6ee927370edf2

      SHA1

      ffbb62338e71abd66194f617987384709695576f

      SHA256

      00840aafbfed2ff9e6eb973b88a44763482c97f88b1f073c2bb63d28c7405e1f

      SHA512

      db804a7b60810f8de0c947371f9bd1c480db4aca6c8d7fbde1932156e111811c4b16874a3fd8674e1df0ae0bf3c55928d85a557abf4510cc5d43300c50346e30

    • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
      MD5

      975b9c5518e9839fd0c6ee927370edf2

      SHA1

      ffbb62338e71abd66194f617987384709695576f

      SHA256

      00840aafbfed2ff9e6eb973b88a44763482c97f88b1f073c2bb63d28c7405e1f

      SHA512

      db804a7b60810f8de0c947371f9bd1c480db4aca6c8d7fbde1932156e111811c4b16874a3fd8674e1df0ae0bf3c55928d85a557abf4510cc5d43300c50346e30

    • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
      MD5

      975b9c5518e9839fd0c6ee927370edf2

      SHA1

      ffbb62338e71abd66194f617987384709695576f

      SHA256

      00840aafbfed2ff9e6eb973b88a44763482c97f88b1f073c2bb63d28c7405e1f

      SHA512

      db804a7b60810f8de0c947371f9bd1c480db4aca6c8d7fbde1932156e111811c4b16874a3fd8674e1df0ae0bf3c55928d85a557abf4510cc5d43300c50346e30

    • C:\Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
      MD5

      975b9c5518e9839fd0c6ee927370edf2

      SHA1

      ffbb62338e71abd66194f617987384709695576f

      SHA256

      00840aafbfed2ff9e6eb973b88a44763482c97f88b1f073c2bb63d28c7405e1f

      SHA512

      db804a7b60810f8de0c947371f9bd1c480db4aca6c8d7fbde1932156e111811c4b16874a3fd8674e1df0ae0bf3c55928d85a557abf4510cc5d43300c50346e30

    • \Users\Admin\AppData\Roaming\vthegvcfdhtervtefred.exe
      MD5

      975b9c5518e9839fd0c6ee927370edf2

      SHA1

      ffbb62338e71abd66194f617987384709695576f

      SHA256

      00840aafbfed2ff9e6eb973b88a44763482c97f88b1f073c2bb63d28c7405e1f

      SHA512

      db804a7b60810f8de0c947371f9bd1c480db4aca6c8d7fbde1932156e111811c4b16874a3fd8674e1df0ae0bf3c55928d85a557abf4510cc5d43300c50346e30

    • memory/520-72-0x0000000000000000-mapping.dmp
    • memory/1032-61-0x0000000000000000-mapping.dmp
    • memory/1032-66-0x0000000004F30000-0x0000000004F31000-memory.dmp
      Filesize

      4KB

    • memory/1032-64-0x0000000000A60000-0x0000000000A61000-memory.dmp
      Filesize

      4KB

    • memory/1032-69-0x00000000004E0000-0x00000000004E8000-memory.dmp
      Filesize

      32KB

    • memory/1032-70-0x00000000043E0000-0x0000000004438000-memory.dmp
      Filesize

      352KB

    • memory/1276-71-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1276-57-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1276-56-0x00000000700B1000-0x00000000700B3000-memory.dmp
      Filesize

      8KB

    • memory/1276-55-0x0000000072631000-0x0000000072634000-memory.dmp
      Filesize

      12KB

    • memory/1276-58-0x00000000763C1000-0x00000000763C3000-memory.dmp
      Filesize

      8KB

    • memory/1612-78-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1612-77-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1612-80-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1612-79-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1612-81-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1612-82-0x000000000043777E-mapping.dmp
    • memory/1612-84-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/1612-86-0x00000000047C0000-0x00000000047C1000-memory.dmp
      Filesize

      4KB

    • memory/1824-67-0x0000000000000000-mapping.dmp
    • memory/1824-68-0x000007FEFBB41000-0x000007FEFBB43000-memory.dmp
      Filesize

      8KB