Analysis

  • max time kernel
    132s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    20-11-2024 11:01

General

  • Target

    aca3d8614954a35938653f8a26effa4f96952d8227222ca57dda6ab7cd607424.docx

  • Size

    459KB

  • MD5

    d2d23ccc53607370c926fe786f92c75b

  • SHA1

    8a84a9083d5b1e26fb9d0374efec7b259a3d059b

  • SHA256

    aca3d8614954a35938653f8a26effa4f96952d8227222ca57dda6ab7cd607424

  • SHA512

    2a38f263819d6350fdcc7e12345d68dbb6745eedef50ac261b488f73e534e0cc568c0d7dd909ca1bc438e436a9148aaf0f38f86792d8a92c174faef37e4396ca

  • SSDEEP

    6144:hdlcbR5HastSFXbqUAbqUAbqUvyLE8IIIIIW0ru0rqme6eeCe9vCeXhdYp9tmYL2:zARtUVhpr/rqIXM9mrm9Bt2mhW8G0Yf

Malware Config

Extracted

Family

vipkeylogger

Credentials

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • Blocklisted process makes network request 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Downloads MZ/PE file
  • Abuses OpenXML format to download file from external location
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • 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 3 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 1 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 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\aca3d8614954a35938653f8a26effa4f96952d8227222ca57dda6ab7cd607424.docx"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:304
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1152
    • 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
      • System Location Discovery: System Language Discovery
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:2680
      • C:\Users\Admin\AppData\Roaming\wealthcharliebgk.exe
        "C:\Users\Admin\AppData\Roaming\wealthcharliebgk.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1560
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wealthcharliebgk.exe"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2700
        • C:\Users\Admin\AppData\Roaming\wealthcharliebgk.exe
          "C:\Users\Admin\AppData\Roaming\wealthcharliebgk.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:2088

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\FSD-{B43CF14A-CB58-461E-AFAE-8078F6E38E75}.FSD

      Filesize

      128KB

      MD5

      7439f8329691f3688d7e4aeeab567b21

      SHA1

      f34304ede065af74f7faa6cc9e18c5262fe90634

      SHA256

      4115efe8b78dfe56a80497492dffcb7ebca9c8e7eb627d54bfc37b1a3e07843d

      SHA512

      463d5971430631520c9131d8c5cf82dcedb79c00ac635df571f02519152a10c97ff056be0de6c2035745cf73ecf04307f0bb47a5f04120f7bde39887238f62d6

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

      Filesize

      128KB

      MD5

      419606b80d97034c50f8b9cb6c602efe

      SHA1

      1ec867ecc7a04057e07a22efcf70dc50a6710ae7

      SHA256

      8f9f99d8d8b6422a068dbe23ac3e0bbe369b1c7a5cdfe71c08b2074d0c2f8cf4

      SHA512

      491ffed70efc225ac3034a746282588c0f1e6be00da81ce3cb9afeb8dd5e9df35d553678f8ec2d8aa5ce056069567dfc53b6bcd113ae1b9964051a43d3e0b8cd

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\LocalCacheFileEditManager\FSD-{8E516895-3E8C-4B91-A134-FAD4EB37C72D}.FSD

      Filesize

      128KB

      MD5

      8223fbc711316f2a1fb0bbdcf99995a3

      SHA1

      cd20487b57c9e1f0cb72e6f296a7e66e520d30ed

      SHA256

      44de6f23cd4fd8f697a70b84e1779a4f07fb7233e025eb965fe2ef64645aa78b

      SHA512

      a45db8cbffbe6941f63cf8e3d81eb006ba135fb6bcadd0a62b492e25606ef61c66c63adf377f77e11b53f55f43214b0810fc11c9a0970a05641c6d7d30dc47cc

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\40WV1DY9\Xkl0PnD8zFPjfh1[1].wiz

      Filesize

      408KB

      MD5

      f6e89e6c3ab17d8d58699ccefeaf3c8d

      SHA1

      86c245d0a2ef138aa7afca6bb43316e251b07c68

      SHA256

      32f5bf26d32b42212ada3e88017ad037c6c84f760a64585252576d893a00ff5f

      SHA512

      ab3a82dcd600c7169da373101593480a1ef8e82b2d339b5367f0e2b118f23ec3eb591a3e269de3f5d8b0e0843ec4574b33c5f98e0344c4be38a26c25caccb4b6

    • C:\Users\Admin\AppData\Local\Temp\{7ECAFB0D-33B3-4C9C-9F67-C692A9155560}

      Filesize

      128KB

      MD5

      63453daeab27dc724ba53baa6257d44a

      SHA1

      2f70492fda72590a369b7b499d1ca900a5927f48

      SHA256

      fefaf2e1fbf3561d7b8ace5bca3e8ad94ecc4999d8f514cde92514bb579d61af

      SHA512

      526f5c2b0733a8b574131631e3663d220c4c3b9da655f5cf793eda2c6f2b6d9c838b55a43be4400e0eb82a6ed41bf2670ac21186d5e5100ce47dc40dd8065430

    • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\ExcludeDictionaryEN0409.lex

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

      Filesize

      768KB

      MD5

      ccc582f44adb0a736c9fbbfa9f20f325

      SHA1

      51aac7cd475ae0115f43d5069213300d6f66672c

      SHA256

      8278e7661e290287dbdba63e2d2c2add86c2f64da32dfb137aee4597cab76508

      SHA512

      0bb6f532238cb5b7db8846740fad0c616d4e0e4f2a89f6613f2f902cde3c19632b58287da223f97476679649b7978651d20e8ce363bd0e89ae893710674c78a6

    • memory/304-95-0x0000000073C4D000-0x0000000073C58000-memory.dmp

      Filesize

      44KB

    • memory/304-2-0x0000000073C4D000-0x0000000073C58000-memory.dmp

      Filesize

      44KB

    • memory/304-0-0x000000002F091000-0x000000002F092000-memory.dmp

      Filesize

      4KB

    • memory/304-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1560-94-0x0000000001390000-0x0000000001454000-memory.dmp

      Filesize

      784KB

    • memory/1560-103-0x0000000000410000-0x0000000000422000-memory.dmp

      Filesize

      72KB

    • memory/1560-104-0x0000000005100000-0x000000000518E000-memory.dmp

      Filesize

      568KB

    • memory/2088-105-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2088-107-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2088-116-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2088-118-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2088-114-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2088-113-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2088-111-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2088-109-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB