Analysis

  • max time kernel
    117s
  • max time network
    61s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2022 15:23

General

  • Target

    PURCHASE ORDER.rtf

  • Size

    26KB

  • MD5

    996b113dfcf00012539bbca65d886074

  • SHA1

    b05ce7726b68786c9ffbae7ae42ac4d18c6e1c39

  • SHA256

    776c5e0b503498c97326589010eb397bbb756af1a8c49851ed7d4be56a8dc0b8

  • SHA512

    7b0a44a9b13e100086e6a77ec79ad600f40e072f32f1658805cc916bf27b8ece6c29b2788401becf040396cfa6e925c1925b19b2fc3e32c9d37f72d717bd4aaa

  • SSDEEP

    768:mFx0XaIsnPRIa4fwJM7ta37OCTz2ifuo6/p:mf0Xvx3EMxa3gGY/p

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.gmail.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    hnxqezadblabdsss

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
  • 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

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\PURCHASE ORDER.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:1088
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1300
    • 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:1760
      • C:\Users\Admin\AppData\Roaming\obidnh583245.exe
        "C:\Users\Admin\AppData\Roaming\obidnh583245.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1132
        • C:\Users\Admin\AppData\Roaming\obidnh583245.exe
          "C:\Users\Admin\AppData\Roaming\obidnh583245.exe"
          3⤵
          • Executes dropped EXE
          PID:1848

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\obidnh583245.exe
      Filesize

      670KB

      MD5

      cf79503bf57553739c5fb81699b3aa38

      SHA1

      b90fb7c842aa220339ae4d72569410cb8a9ed1b6

      SHA256

      a76b7df57b1b16e4bac4e1e19e88b1a03c0b31aec4441046be5cbe7ce68cd58c

      SHA512

      2f32187f9f2edb940ce3389b78f63c8429cab7252d20c3bd8acfdbaaf090b38c12b7524687aa3764ac4e08fba3d1dac051e4d419e18fdd1d584d4f39d5274ed8

    • C:\Users\Admin\AppData\Roaming\obidnh583245.exe
      Filesize

      670KB

      MD5

      cf79503bf57553739c5fb81699b3aa38

      SHA1

      b90fb7c842aa220339ae4d72569410cb8a9ed1b6

      SHA256

      a76b7df57b1b16e4bac4e1e19e88b1a03c0b31aec4441046be5cbe7ce68cd58c

      SHA512

      2f32187f9f2edb940ce3389b78f63c8429cab7252d20c3bd8acfdbaaf090b38c12b7524687aa3764ac4e08fba3d1dac051e4d419e18fdd1d584d4f39d5274ed8

    • C:\Users\Admin\AppData\Roaming\obidnh583245.exe
      Filesize

      670KB

      MD5

      cf79503bf57553739c5fb81699b3aa38

      SHA1

      b90fb7c842aa220339ae4d72569410cb8a9ed1b6

      SHA256

      a76b7df57b1b16e4bac4e1e19e88b1a03c0b31aec4441046be5cbe7ce68cd58c

      SHA512

      2f32187f9f2edb940ce3389b78f63c8429cab7252d20c3bd8acfdbaaf090b38c12b7524687aa3764ac4e08fba3d1dac051e4d419e18fdd1d584d4f39d5274ed8

    • \Users\Admin\AppData\Roaming\obidnh583245.exe
      Filesize

      670KB

      MD5

      cf79503bf57553739c5fb81699b3aa38

      SHA1

      b90fb7c842aa220339ae4d72569410cb8a9ed1b6

      SHA256

      a76b7df57b1b16e4bac4e1e19e88b1a03c0b31aec4441046be5cbe7ce68cd58c

      SHA512

      2f32187f9f2edb940ce3389b78f63c8429cab7252d20c3bd8acfdbaaf090b38c12b7524687aa3764ac4e08fba3d1dac051e4d419e18fdd1d584d4f39d5274ed8

    • \Users\Admin\AppData\Roaming\obidnh583245.exe
      Filesize

      670KB

      MD5

      cf79503bf57553739c5fb81699b3aa38

      SHA1

      b90fb7c842aa220339ae4d72569410cb8a9ed1b6

      SHA256

      a76b7df57b1b16e4bac4e1e19e88b1a03c0b31aec4441046be5cbe7ce68cd58c

      SHA512

      2f32187f9f2edb940ce3389b78f63c8429cab7252d20c3bd8acfdbaaf090b38c12b7524687aa3764ac4e08fba3d1dac051e4d419e18fdd1d584d4f39d5274ed8

    • memory/1088-58-0x00000000713BD000-0x00000000713C8000-memory.dmp
      Filesize

      44KB

    • memory/1088-57-0x0000000075241000-0x0000000075243000-memory.dmp
      Filesize

      8KB

    • memory/1088-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1088-55-0x00000000703D1000-0x00000000703D3000-memory.dmp
      Filesize

      8KB

    • memory/1088-54-0x0000000072951000-0x0000000072954000-memory.dmp
      Filesize

      12KB

    • memory/1088-85-0x00000000713BD000-0x00000000713C8000-memory.dmp
      Filesize

      44KB

    • memory/1088-72-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1132-62-0x0000000000000000-mapping.dmp
    • memory/1132-65-0x0000000000250000-0x00000000002FE000-memory.dmp
      Filesize

      696KB

    • memory/1132-67-0x0000000000600000-0x000000000061A000-memory.dmp
      Filesize

      104KB

    • memory/1132-70-0x00000000005E0000-0x00000000005EE000-memory.dmp
      Filesize

      56KB

    • memory/1132-71-0x0000000004FC0000-0x0000000005032000-memory.dmp
      Filesize

      456KB

    • memory/1132-73-0x0000000004700000-0x0000000004738000-memory.dmp
      Filesize

      224KB

    • memory/1300-68-0x0000000000000000-mapping.dmp
    • memory/1300-69-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp
      Filesize

      8KB

    • memory/1848-75-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1848-78-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1848-74-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1848-80-0x000000000043249E-mapping.dmp
    • memory/1848-79-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1848-83-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1848-77-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB