Analysis

  • max time kernel
    100s
  • max time network
    103s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    27-02-2023 19:39

General

  • Target

    Order.docx

  • Size

    10KB

  • MD5

    b9571630868381221bee77b8fe5079ca

  • SHA1

    12228855be9ea4783d1034678e00ddb51732d83b

  • SHA256

    3d3427a09aceb2dfcceaf2c8a232df04929a4bec0b43428ef595bbbd16162ddc

  • SHA512

    209a9a056f36d3f709f5abeffcd33e6f918094921efc79c1deaede609e25b2fe752c60b3c86b0b6b61f0ff4365a8c45917343303bd4fa7d60762fc3d1287e897

  • SSDEEP

    192:ScIMmtP1aIG/bslPL++uO+l+CVWBXJC0c3uG/:SPXU/slT+LO+HkZC9N

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    002@frem-tr.com
  • Password:
    jCXzqcP1 daniel 3116
  • Email To:
    002@frem-tr.com

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
  • Abuses OpenXML format to download file from external location 2 IoCs
  • 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.

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in System32 directory 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 25 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\Order.docx"
    1⤵
    • Abuses OpenXML format to download file from external location
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:316
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:808
    • 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:1920
      • C:\Users\Public\vbc.exe
        "C:\Users\Public\vbc.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1772
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\REqzovjc.exe"
          3⤵
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:748
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\REqzovjc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp19F7.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1544
        • C:\Users\Public\vbc.exe
          "C:\Users\Public\vbc.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:1932

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Scheduled Task

    1
    T1053

    Exploitation for Client Execution

    1
    T1203

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    2
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\FSD-CNRY.FSD
      Filesize

      128KB

      MD5

      64e286455faa933fa8bab7a678eb91b3

      SHA1

      b57a9edcfa2e864349e0942bcc9a408928c0d4d3

      SHA256

      881b1cc0b81c8b0868d75c9a064265b53c8509c95b372cb4cf94826b006bb570

      SHA512

      6b13dcf384af5d57d645116c05d3fe2ba98e02b8e326bf611ce293bee9ad190c4f8c904f9720ed859153a6dfecb653cdd87cdcb802fc62cda8bfca3668a0e370

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\FSD-{20CE55F8-9409-4242-9AD0-A2B2EC7837B6}.FSD
      Filesize

      128KB

      MD5

      f058f5c19972c3d37c31a0e70b9a8b35

      SHA1

      e526b723327225e6fa48c4dca6087b66824603c6

      SHA256

      c4678e1634a82ae2eedfc0a87a0d6771d46a30666ca14c19d170569087e2c688

      SHA512

      df1d2b550998e44da86ff89d330980bf7690c0d5d6eb37c6a29eb5faec052152f869c9fef5e0bcb07e1790efa51d9d47e19670bbfb06714aa0d679681c61f53b

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\LocalCacheFileEditManager\FSD-CNRY.FSD
      Filesize

      128KB

      MD5

      6f1cb92c532dc49c636b9dedd2a67121

      SHA1

      344b27f6d7a422d23ccd0d0e16834b4d6cd19083

      SHA256

      5ccb60c7f05b996003246c8dfcdd6158063211f5d8fd23a786890b8e9993c4f7

      SHA512

      1ee98df3539780c6fb4f74fe37cdf6447e93b577da37bf31cd7c642926871f2eedb277b68be59403575ce3c1f1f963094513e61166c6858e80b16e451240b8d2

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\LocalCacheFileEditManager\FSD-{58E46BEC-EB28-476A-9F3D-ED058002744C}.FSD
      Filesize

      128KB

      MD5

      242ef3913aec64b4a7b23191a77152e9

      SHA1

      3db6bdeb13b9953e126a704bb690b2e506fc6805

      SHA256

      376a0de134cb9c3eac102252fa995b5087f0915c465103534b53fc05ab18039f

      SHA512

      4564e67e42ee96e355715e9e2ef6c9a49d1256c6a9d6e86b7873dfd2610090fbc21c6b5778031a45053b787e14b1b6d4b0baf109f94ae8a80b2f28ea963753e2

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\QCNSQOTT\c00----------------------------[1].doc
      Filesize

      14KB

      MD5

      a0d3000e5792081fa970184fe592808f

      SHA1

      551941fd7e55cb98ea3a2f315fabe1d2b0a0b935

      SHA256

      7cee2955d8fee68f5501d86c84159f3e8cefcd52476a950a5712b84bbb1feedd

      SHA512

      e64b08ff15d7c396304d167781555beb01fc47ba488ead5dd231d7166d67da0599c61d942cb1d9415469cd4e4e2c8cad46763df224ba02ebaeab629b008f2556

    • C:\Users\Admin\AppData\Local\Temp\tmp19F7.tmp
      Filesize

      1KB

      MD5

      4e683478fdc4ecffdf35edefe47565e8

      SHA1

      ea1d1e1b2c246bce9a6aee95f833a9cb0208c2e3

      SHA256

      8bc95879f4ca9597e062895f001c8bc32a52391567194ee97354161b7abbcca2

      SHA512

      6cd8f7d24cb78c4defc9bb56e7f5c057acd561c1a2993f501f50a424ca0d5ebd6e8cd2d32828c271bbd61f686d3f7a1bce29eb78f6a8ec47479189bc0cecaf91

    • C:\Users\Admin\AppData\Local\Temp\{BDC12C0D-8093-4EF9-8923-037D8D36EFC1}
      Filesize

      128KB

      MD5

      beae1bb7a6a70f7a917a76455f5ec782

      SHA1

      c5217a0b77cb3dc400f2c0e7b1f9f4f4948dad27

      SHA256

      ba86c3200f3f9a8cfbfa037f781033fd157fb3ae280d3f24e8a3b4ec5ab3e218

      SHA512

      acf5bc0e8e5fea4a65f2a6e7a58ec0172245c446e6286fa999ca9719939cc9cdf269cdabc81b1534e6b4134f5c15bc940554a390cc2e0535a1e9929ff4d67407

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

      20KB

      MD5

      f6b0e9df5acccfd3a3b4ea31f1813013

      SHA1

      1e24fdd28ded301a99a78c6d583d80fe5e7d5508

      SHA256

      bbeb10e659f7915c247db25b447d11b42f3caf32375408e81ef91e23ef2a6d55

      SHA512

      0dbb822f763464a982655d0e51afeca6c942864b30f13a0803449b8d0331bcd5b6e6e81ee87ff956eda7b17115342223209f3d73426e7cb3e79912bf21c5927b

    • C:\Users\Public\vbc.exe
      Filesize

      1.1MB

      MD5

      a5e75f93a365f2f20438395c0949624d

      SHA1

      75a9d3e8faa58757a04a84ebf3def50357ac515e

      SHA256

      0e971d7a08790f5b5a54e074c3b343985ab403cd0665c2580d0e7d0c4e463163

      SHA512

      af70c9bb70fc2ecfcda0c395b3a4076b18629e7a94273b6adbda7dd7ebbde00939780c12d53f829ee326a33fb71de7729d3ba178e49a3d3fa3f86d351bd8e4d6

    • C:\Users\Public\vbc.exe
      Filesize

      1.1MB

      MD5

      a5e75f93a365f2f20438395c0949624d

      SHA1

      75a9d3e8faa58757a04a84ebf3def50357ac515e

      SHA256

      0e971d7a08790f5b5a54e074c3b343985ab403cd0665c2580d0e7d0c4e463163

      SHA512

      af70c9bb70fc2ecfcda0c395b3a4076b18629e7a94273b6adbda7dd7ebbde00939780c12d53f829ee326a33fb71de7729d3ba178e49a3d3fa3f86d351bd8e4d6

    • C:\Users\Public\vbc.exe
      Filesize

      1.1MB

      MD5

      a5e75f93a365f2f20438395c0949624d

      SHA1

      75a9d3e8faa58757a04a84ebf3def50357ac515e

      SHA256

      0e971d7a08790f5b5a54e074c3b343985ab403cd0665c2580d0e7d0c4e463163

      SHA512

      af70c9bb70fc2ecfcda0c395b3a4076b18629e7a94273b6adbda7dd7ebbde00939780c12d53f829ee326a33fb71de7729d3ba178e49a3d3fa3f86d351bd8e4d6

    • C:\Users\Public\vbc.exe
      Filesize

      1.1MB

      MD5

      a5e75f93a365f2f20438395c0949624d

      SHA1

      75a9d3e8faa58757a04a84ebf3def50357ac515e

      SHA256

      0e971d7a08790f5b5a54e074c3b343985ab403cd0665c2580d0e7d0c4e463163

      SHA512

      af70c9bb70fc2ecfcda0c395b3a4076b18629e7a94273b6adbda7dd7ebbde00939780c12d53f829ee326a33fb71de7729d3ba178e49a3d3fa3f86d351bd8e4d6

    • \Users\Public\vbc.exe
      Filesize

      1.1MB

      MD5

      a5e75f93a365f2f20438395c0949624d

      SHA1

      75a9d3e8faa58757a04a84ebf3def50357ac515e

      SHA256

      0e971d7a08790f5b5a54e074c3b343985ab403cd0665c2580d0e7d0c4e463163

      SHA512

      af70c9bb70fc2ecfcda0c395b3a4076b18629e7a94273b6adbda7dd7ebbde00939780c12d53f829ee326a33fb71de7729d3ba178e49a3d3fa3f86d351bd8e4d6

    • memory/316-203-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/316-54-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/748-174-0x00000000025C0000-0x0000000002600000-memory.dmp
      Filesize

      256KB

    • memory/748-173-0x00000000025C0000-0x0000000002600000-memory.dmp
      Filesize

      256KB

    • memory/1772-152-0x0000000005560000-0x000000000560A000-memory.dmp
      Filesize

      680KB

    • memory/1772-143-0x00000000005A0000-0x00000000005B6000-memory.dmp
      Filesize

      88KB

    • memory/1772-141-0x0000000000200000-0x000000000031C000-memory.dmp
      Filesize

      1.1MB

    • memory/1772-142-0x0000000004E40000-0x0000000004E80000-memory.dmp
      Filesize

      256KB

    • memory/1772-158-0x0000000000450000-0x0000000000482000-memory.dmp
      Filesize

      200KB

    • memory/1772-151-0x00000000005C0000-0x00000000005CC000-memory.dmp
      Filesize

      48KB

    • memory/1772-150-0x0000000004E40000-0x0000000004E80000-memory.dmp
      Filesize

      256KB

    • memory/1932-162-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1932-164-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1932-167-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1932-169-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1932-172-0x0000000004F90000-0x0000000004FD0000-memory.dmp
      Filesize

      256KB

    • memory/1932-163-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/1932-161-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1932-176-0x0000000004F90000-0x0000000004FD0000-memory.dmp
      Filesize

      256KB

    • memory/1932-160-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/1932-159-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB