Analysis

  • max time kernel
    248s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    15-11-2024 05:41

General

  • Target

    15112024_0541_14112024_Bank Swift Copy.docx

  • Size

    459KB

  • MD5

    3f9ae2b975cec92e0402d614cd2391a5

  • SHA1

    43d41944021358bee6b6b48594d9c3f54fbaecd5

  • SHA256

    27a37162f8f0baf5fe161825f8108f1f3e20bada83c2be08fe9919c60e4727b8

  • SHA512

    1a14966056b58e84438309a1dea5ed4d5a6036b76cde5b0baec395d87bcfb2edf596bf9c201c0310847972f89c04c866f2008e938791b233ffb7042365222771

  • SSDEEP

    6144:drlcbR5HastSFXbqUAbqUAbqUvyLE8IIIIIW0ru0rqme6eeCe9vCeXhdwt9tmYL+:RARtUVhpr/rqIXg9mrm9Bt2mhW8G0Y1Z

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 2 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\15112024_0541_14112024_Bank Swift Copy.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:2816
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2648
    • 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:1952
      • C:\Users\Admin\AppData\Roaming\obigfdsdfgh.exe
        "C:\Users\Admin\AppData\Roaming\obigfdsdfgh.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2116
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\obigfdsdfgh.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:2492
        • C:\Users\Admin\AppData\Roaming\obigfdsdfgh.exe
          "C:\Users\Admin\AppData\Roaming\obigfdsdfgh.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:2300

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\FSD-{99A3832B-D88F-4D63-BF34-2E5F6BE16DFA}.FSD

      Filesize

      128KB

      MD5

      e4979585521031bc78a7e820ae9d2ff7

      SHA1

      38a602ee1c15de97025731d5ff751f72843fb297

      SHA256

      89c6e02cc866bce26cef70c0ad0349d09e8338f8939dd79f53581a6ad54f4ba2

      SHA512

      e9d9429b9a4fc1d52ed3948afe77bf533f3ce7c120a8e28a85c6cf3517db424cd52820e45671ac8339f274d10661880a5c4b8d9d9d608e272d382e5eea19b81e

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

      Filesize

      128KB

      MD5

      cf7b59f4cfe306099ec63fa8acf7e862

      SHA1

      cebdfa2ca9cdfc1604c2bbd152ec165c3dd96b93

      SHA256

      8d2e58de017a26eb40bc379962c2fbacae1231cff3fded4066211c0c1e55b641

      SHA512

      7b0b3da9ed9be361a859b698d22bcbe5f55a56c61cfe1a2d0603857c87ce79fc2fdc408833e95567172a8fede93a72d892664b638536eb9db55c638dd7e28647

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\LocalCacheFileEditManager\FSD-{FBD1E75F-80E2-478B-AB08-DDFAC3FD3AA9}.FSD

      Filesize

      128KB

      MD5

      94d2412f0fe54cb2868527500428dfd3

      SHA1

      39c11ba3e16f247512bd884e1c71d4c648c3a4b3

      SHA256

      235a4df8b47abf71d5d9ccd98bf58cae70aa50bde1ffdc379751d8931d47daf5

      SHA512

      b96e43eb2554b18425e730b47fdf5f6225c1a7ba5a1100084a7369e0fdbf99bba58c31b718a420e8790e8a443239faa351e22a7e9a74366db696a2066a322f64

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\9GP4P3HF\xXdquUOrM1vD3An[1].doc

      Filesize

      799KB

      MD5

      2087de574fefae441db7ced132da6407

      SHA1

      6d8b4083d71075be31068808232805ea486f77d8

      SHA256

      dc8ae41681fdf19abcf62b27b3d8359c32ba6f20bee1e24b7ce9b37d4faebe8b

      SHA512

      02ead1047af13379ee161c25e1db2c83033daf752629159b9c5836ed0c1d5f6436da73299d920cc10cefe6d4edd3272266d9b4f2088225bc434a53c20ba43ce9

    • C:\Users\Admin\AppData\Local\Temp\{015AF40C-CF62-45FA-B21F-816992567E42}

      Filesize

      128KB

      MD5

      69c8c8df46610a7b38765f2c63dad3e1

      SHA1

      a55b65ba8ce0ed420b3477979e1475eabe9d4f12

      SHA256

      2eb7ba69c1d93b94bf61859d95bbb821ef588bc10ce4aff00988a539f788754f

      SHA512

      c036af51c778738bb8e46da65ac6001d5ca3c7198482bd59522fa82c8e481de59fb2feb72ac8c824825ef22bb001bc1f022b0c9366629b940cc744c311376983

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

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

      Filesize

      692KB

      MD5

      66ff1390c2cb8e18a5ed550f8dce6a34

      SHA1

      17f102c8ec11b0435b158ed898f9d95f2cd31638

      SHA256

      bc4f57934371fb9a46fe4ca5166ab1a4e16d523c4a43c28e4a7eded85839166b

      SHA512

      ae1c0e214b31d4613e74b4c59f2d670cf32a039c2eb0cf92a1c2b71a652c436c891a3abc52a1ea80ef4c7cff1cf009ccc2149cb2765ed596b48e8f84cee242fd

    • memory/2116-107-0x0000000004F20000-0x0000000004FAE000-memory.dmp

      Filesize

      568KB

    • memory/2116-106-0x0000000000470000-0x0000000000482000-memory.dmp

      Filesize

      72KB

    • memory/2116-97-0x0000000000DB0000-0x0000000000E62000-memory.dmp

      Filesize

      712KB

    • memory/2300-120-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2300-108-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2300-119-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2300-117-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2300-116-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2300-114-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2300-112-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2300-110-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2816-99-0x000000007317D000-0x0000000073188000-memory.dmp

      Filesize

      44KB

    • memory/2816-2-0x000000007317D000-0x0000000073188000-memory.dmp

      Filesize

      44KB

    • memory/2816-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/2816-0-0x000000002F501000-0x000000002F502000-memory.dmp

      Filesize

      4KB