Analysis

  • max time kernel
    105s
  • max time network
    69s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2022 16:36

General

  • Target

    SecuriteInfo.com.Exploit.Rtf.Obfuscated.32.15559.24662.rtf

  • Size

    33KB

  • MD5

    b37b91e94861e4515bf3d78328f73ba5

  • SHA1

    688fb6633a4c08529231e69d5e7ec331f5bbbddd

  • SHA256

    6a5116dae3e3873885e1a98b06af60d65ff2da2e7971eedcff92ab965b7f74a0

  • SHA512

    eb01c892c4f17936818ec7017e195368a032740e447cd1417d39707bc9e06b2b8e0afc38b099363fa477685fbfb426f546539f9c322c27131dc066a83c2a2fa2

  • SSDEEP

    768:nFx0XaIsnPRIa4fwJMBq9atgaqkvoLCMN5rHBMNBy1x3:nf0Xvx3EMEkyaqsaCMb+By1x3

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 6 IoCs
  • Loads dropped DLL 2 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
  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 33 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\SecuriteInfo.com.Exploit.Rtf.Obfuscated.32.15559.24662.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:1552
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1124
    • 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:280
      • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
        "C:\Users\Admin\AppData\Roaming\daminomah583245.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1364
        • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
          "C:\Users\Admin\AppData\Roaming\daminomah583245.exe"
          3⤵
          • Executes dropped EXE
          PID:1924
        • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
          "C:\Users\Admin\AppData\Roaming\daminomah583245.exe"
          3⤵
          • Executes dropped EXE
          PID:1468
        • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
          "C:\Users\Admin\AppData\Roaming\daminomah583245.exe"
          3⤵
          • Executes dropped EXE
          PID:864
        • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
          "C:\Users\Admin\AppData\Roaming\daminomah583245.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:1296
        • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
          "C:\Users\Admin\AppData\Roaming\daminomah583245.exe"
          3⤵
          • Executes dropped EXE
          PID:1036

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Exploitation for Client Execution

    1
    T1203

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • C:\Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • \Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • \Users\Admin\AppData\Roaming\daminomah583245.exe
      Filesize

      685KB

      MD5

      5871310b9282d8d32698ba443adab20d

      SHA1

      1db4f6955a6ca745ebe72874ee6e1ac96b8b251c

      SHA256

      dfbe11ecf8255697416dfd500454d1d8af9e4c62cf552eee648bea478ced5d05

      SHA512

      a8b1ac2e1ff46a856dead9784c9953a8703c14d07469ec431d9aa45943e864c566c153a94991adc9416e5a6531f59c20d7702fef369912333a643291d0ced6b9

    • memory/1124-69-0x0000000000000000-mapping.dmp
    • memory/1124-70-0x000007FEFBB71000-0x000007FEFBB73000-memory.dmp
      Filesize

      8KB

    • memory/1296-81-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/1296-78-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/1296-89-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/1296-87-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/1296-84-0x0000000000435BCE-mapping.dmp
    • memory/1296-82-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/1296-83-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/1296-79-0x0000000000400000-0x000000000043A000-memory.dmp
      Filesize

      232KB

    • memory/1364-73-0x00000000045D0000-0x000000000460A000-memory.dmp
      Filesize

      232KB

    • memory/1364-72-0x0000000004CD0000-0x0000000004D44000-memory.dmp
      Filesize

      464KB

    • memory/1364-67-0x0000000000980000-0x000000000099A000-memory.dmp
      Filesize

      104KB

    • memory/1364-65-0x0000000000030000-0x00000000000E2000-memory.dmp
      Filesize

      712KB

    • memory/1364-62-0x0000000000000000-mapping.dmp
    • memory/1364-71-0x00000000006C0000-0x00000000006CE000-memory.dmp
      Filesize

      56KB

    • memory/1552-68-0x00000000710CD000-0x00000000710D8000-memory.dmp
      Filesize

      44KB

    • memory/1552-57-0x0000000075681000-0x0000000075683000-memory.dmp
      Filesize

      8KB

    • memory/1552-55-0x00000000700E1000-0x00000000700E3000-memory.dmp
      Filesize

      8KB

    • memory/1552-54-0x0000000072661000-0x0000000072664000-memory.dmp
      Filesize

      12KB

    • memory/1552-58-0x00000000710CD000-0x00000000710D8000-memory.dmp
      Filesize

      44KB

    • memory/1552-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1552-91-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1552-92-0x00000000710CD000-0x00000000710D8000-memory.dmp
      Filesize

      44KB