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Analysis

  • max time kernel
    123s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2023, 07:02

General

  • Target

    CONTRACT P.O 2.rtf

  • Size

    101KB

  • MD5

    1554ddba8a0a42a1e258363e5091bcad

  • SHA1

    ba1c0dc891a4c879e0e770b735d84a868da64f5b

  • SHA256

    ffeddcfd73cd061efddf80506a6a7150b243beb645669c6c249b52f941ed016f

  • SHA512

    6404faefd20f0a7e779a2734d72e8ebe18d2d9f7a67b48419d7f74f2f82b0bb0141d4f67048bd4a3eb6ada8b93a23589972dd0db67f871ed628b9c4651be5fce

  • SSDEEP

    768:TC7Wq0BiIsxPpwkWfYjugztCUlkXba1C/YuiYlusFbDXJhWxcX5W6Lulz3PvAq5:TC6q0BnpP4ugzxbuBlusFbFhvrulz3V

Malware Config

Extracted

Family

agenttesla

Credentials

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 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 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\CONTRACT P.O 2.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:2288
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2732
    • 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:2828
      • C:\Users\Admin\AppData\Roaming\obindg748367.exe
        "C:\Users\Admin\AppData\Roaming\obindg748367.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2692
        • C:\Users\Admin\AppData\Roaming\obindg748367.exe
          "C:\Users\Admin\AppData\Roaming\obindg748367.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:756

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      bebf1b60494c0549bb50b712b9d53928

      SHA1

      cc6ce6d88c9b627037f635b303ee99f4f9cb8c7f

      SHA256

      e63ede53669efa6e288f3d9148064a93bf2494da129292de41c5454b6669d7dc

      SHA512

      7e25c22b9bf55d900f6d701b99b72d9526e00edca488126448f9d409a2a31f3666a5ec876fc97f64df8629d9df1fcb3ac6cbe4b8a02bcafabb745d16861a37d4

    • C:\Users\Admin\AppData\Roaming\obindg748367.exe

      Filesize

      707KB

      MD5

      b4de5fc46cd12ce94031974b006f4213

      SHA1

      c33544c1f436191218274a8cb889ffcc4d6cf8c0

      SHA256

      63ad94d4ee50e7edb7ca2125ea488538068aacd4d572be22fa140addf11631e6

      SHA512

      9fc8b61bed2e1f2bcb100f7bc98b37f8a88a4f90baeecfd6b9b508684ed01ff03f518cee955bf5fa96ee46e30c0f79d744a3eb699d944c6dfc37c23234db23fb

    • C:\Users\Admin\AppData\Roaming\obindg748367.exe

      Filesize

      707KB

      MD5

      b4de5fc46cd12ce94031974b006f4213

      SHA1

      c33544c1f436191218274a8cb889ffcc4d6cf8c0

      SHA256

      63ad94d4ee50e7edb7ca2125ea488538068aacd4d572be22fa140addf11631e6

      SHA512

      9fc8b61bed2e1f2bcb100f7bc98b37f8a88a4f90baeecfd6b9b508684ed01ff03f518cee955bf5fa96ee46e30c0f79d744a3eb699d944c6dfc37c23234db23fb

    • C:\Users\Admin\AppData\Roaming\obindg748367.exe

      Filesize

      707KB

      MD5

      b4de5fc46cd12ce94031974b006f4213

      SHA1

      c33544c1f436191218274a8cb889ffcc4d6cf8c0

      SHA256

      63ad94d4ee50e7edb7ca2125ea488538068aacd4d572be22fa140addf11631e6

      SHA512

      9fc8b61bed2e1f2bcb100f7bc98b37f8a88a4f90baeecfd6b9b508684ed01ff03f518cee955bf5fa96ee46e30c0f79d744a3eb699d944c6dfc37c23234db23fb

    • C:\Users\Admin\AppData\Roaming\obindg748367.exe

      Filesize

      707KB

      MD5

      b4de5fc46cd12ce94031974b006f4213

      SHA1

      c33544c1f436191218274a8cb889ffcc4d6cf8c0

      SHA256

      63ad94d4ee50e7edb7ca2125ea488538068aacd4d572be22fa140addf11631e6

      SHA512

      9fc8b61bed2e1f2bcb100f7bc98b37f8a88a4f90baeecfd6b9b508684ed01ff03f518cee955bf5fa96ee46e30c0f79d744a3eb699d944c6dfc37c23234db23fb

    • \Users\Admin\AppData\Roaming\obindg748367.exe

      Filesize

      707KB

      MD5

      b4de5fc46cd12ce94031974b006f4213

      SHA1

      c33544c1f436191218274a8cb889ffcc4d6cf8c0

      SHA256

      63ad94d4ee50e7edb7ca2125ea488538068aacd4d572be22fa140addf11631e6

      SHA512

      9fc8b61bed2e1f2bcb100f7bc98b37f8a88a4f90baeecfd6b9b508684ed01ff03f518cee955bf5fa96ee46e30c0f79d744a3eb699d944c6dfc37c23234db23fb

    • memory/756-32-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/756-46-0x000000006AF20000-0x000000006B60E000-memory.dmp

      Filesize

      6.9MB

    • memory/756-40-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/756-72-0x0000000004AE0000-0x0000000004B20000-memory.dmp

      Filesize

      256KB

    • memory/756-38-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/756-52-0x0000000004AE0000-0x0000000004B20000-memory.dmp

      Filesize

      256KB

    • memory/756-36-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/756-53-0x000000006AF20000-0x000000006B60E000-memory.dmp

      Filesize

      6.9MB

    • memory/756-34-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/756-43-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/756-45-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/756-30-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/2288-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2288-70-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2288-4-0x0000000070E1D000-0x0000000070E28000-memory.dmp

      Filesize

      44KB

    • memory/2288-71-0x0000000070E1D000-0x0000000070E28000-memory.dmp

      Filesize

      44KB

    • memory/2288-0-0x000000002F331000-0x000000002F332000-memory.dmp

      Filesize

      4KB

    • memory/2288-2-0x0000000070E1D000-0x0000000070E28000-memory.dmp

      Filesize

      44KB

    • memory/2692-16-0x000000006AF20000-0x000000006B60E000-memory.dmp

      Filesize

      6.9MB

    • memory/2692-29-0x00000000057E0000-0x000000000585C000-memory.dmp

      Filesize

      496KB

    • memory/2692-28-0x0000000000620000-0x000000000062C000-memory.dmp

      Filesize

      48KB

    • memory/2692-27-0x00000000003F0000-0x00000000003FA000-memory.dmp

      Filesize

      40KB

    • memory/2692-54-0x000000006AF20000-0x000000006B60E000-memory.dmp

      Filesize

      6.9MB

    • memory/2692-26-0x00000000003B0000-0x00000000003F0000-memory.dmp

      Filesize

      256KB

    • memory/2692-25-0x0000000000600000-0x0000000000616000-memory.dmp

      Filesize

      88KB

    • memory/2692-23-0x00000000003B0000-0x00000000003F0000-memory.dmp

      Filesize

      256KB

    • memory/2692-22-0x000000006AF20000-0x000000006B60E000-memory.dmp

      Filesize

      6.9MB

    • memory/2692-17-0x0000000000DB0000-0x0000000000E66000-memory.dmp

      Filesize

      728KB