Analysis

  • max time kernel
    121s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    23-10-2024 10:06

General

  • Target

    RFQ PO 2.docx

  • Size

    458KB

  • MD5

    918f63aeccaa7aeef06d25c031acd858

  • SHA1

    7234c8c1a704ee3cb3f9f30f560a02fd0f5ec87c

  • SHA256

    2c1e44e7ddf88303822b2a9e7cbfaeedbdbe3ace36ce3e028d19b68cf33c11b3

  • SHA512

    aa1bbd9609e92b1e5319c28586ef2a3ce105335f457069ea6c3c05ccde8b1d6b008cdac6f6236fde74a64f3e07695a5eb2ce5041101fbdf95c55c1f885fa7f87

  • SSDEEP

    6144:zzbUb0cVLNEzYvRSPlaMXKaAi69qltTGSmNZ5m9tmYL6qoPQ7tmYB/l2mDlJjAIJ:NkF5SPMM6I9X4Xs9mrm9Bt2mhW8G0Y8

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.

  • 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 3 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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\RFQ PO 2.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:1680
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2548
    • 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:1444
      • C:\Users\Admin\AppData\Roaming\obiddjtrh.exe
        "C:\Users\Admin\AppData\Roaming\obiddjtrh.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2204
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\obiddjtrh.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:2468
        • C:\Users\Admin\AppData\Roaming\obiddjtrh.exe
          "C:\Users\Admin\AppData\Roaming\obiddjtrh.exe"
          3⤵
          • Executes dropped EXE
          PID:2564
        • C:\Users\Admin\AppData\Roaming\obiddjtrh.exe
          "C:\Users\Admin\AppData\Roaming\obiddjtrh.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:2428

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\FSD-{1247DD2D-3272-4038-A20F-8AE4FFDA0787}.FSD

      Filesize

      128KB

      MD5

      9ced85241b91d1da1a17c5facd482e05

      SHA1

      d7a87004beb0710bbe4456046442e40e81dd88a9

      SHA256

      14b06e4e76d50e478b67f0696914f3f76c25db13d34ac7bc3cafb59ddc4c044a

      SHA512

      7020a9cc0269900ad22e02797df8f2f071850b9e8776695c83d3880351b1f8b107dc851a10d4bb4eb26ab949d8d4f6588a33476cfffa4a801cf32adaee7d7e0b

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

      Filesize

      128KB

      MD5

      bf3f1023b2631463966f355b60846c49

      SHA1

      cea9b7988b4e2459bfbc4fe3b18fb7a22f325477

      SHA256

      88efbd7fb48c3e0f6581ef9e78d09650db5315747ec0e3ceee9ea1d5aa717e2b

      SHA512

      0e01d31b8d3640c790376ce2f43da4d4a8df29b1731c479f8ec1b60e35b3e6946039fb9365398c689c81648d06d2c67e035a63041963d1ebcf01095ed8742bf4

    • C:\Users\Admin\AppData\Local\Microsoft\Office\14.0\OfficeFileCache\LocalCacheFileEditManager\FSD-{FC6607DB-CD33-4982-B836-620E593AC738}.FSD

      Filesize

      128KB

      MD5

      de7cbb3dbb3f3b74235e6c3e9a2f5c18

      SHA1

      9bf4d8215af862e12249fe79138ebe0bed2293da

      SHA256

      52b64b1b1d8034ff878310a482bc79c5d40c22b25e56ac9ecf851464db37926b

      SHA512

      1d1efcdeb5dd3576172c6bfeb6460c44fcd88af31201fffec69a668358684cc221ac9950261a019af82d11754feacddb393baea3194ab7663585c5a0b916ff43

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\DUME8XYE\mnobizxv[1].doc

      Filesize

      670KB

      MD5

      c00a17e56e7eeaf2d72456692c36eec7

      SHA1

      72fbbce62454aaa611317d1c23a1980712d44613

      SHA256

      ee1c72ebaf43badfd7469960a19c0b2c54dc7485eff720cab2eb6bb9cf623c04

      SHA512

      ba0273b1afeb40e3c877fadc20e3ab3960e4db79272b042e500bc896d3986f607de401a2c300f97c42442e2ce4a03c241913a62439e96ff73b9795ad6527db97

    • C:\Users\Admin\AppData\Local\Temp\{F6A2EF43-2F89-4CCF-B774-03630D310ED7}

      Filesize

      128KB

      MD5

      695acb97252394349c7b336a95692351

      SHA1

      56d1dad9d474902d19fdcc8e51e554016d12d6fe

      SHA256

      699afb0617d3d5c1bb8ecd6dad0299a3b834285d2097127af30874eaee719518

      SHA512

      381766c3dff8c394ff3c4d36f783dabc6c975719057682415aeca99b340553cd808b55fd31fbb2e61ace39cf2d2cf6129660cc5dc55fabcf989065e6fd2ed56c

    • C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

      Filesize

      412B

      MD5

      080d84d06e96e51fd365b7fb6cdd073e

      SHA1

      2b07b84b522b8b52b5419ffbe36601b678e5109c

      SHA256

      da15367cb302dfa30fb3bd6081060479e86515f2c0e48a0b44098ce7d63beb6b

      SHA512

      77e8bbefc9f8553bf1b1797af60856f32ab499c7e2417a87de5304f987890aab095e306cdd0dfc4a091f78b7a7a76751f3a40e3507c24318561d2e42c6cc89f2

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Roaming\obiddjtrh.exe

      Filesize

      759KB

      MD5

      7578316e563e8a4a2983ae041a5fff39

      SHA1

      fa5a6777784f272b191803d03a49dfe40354bcf2

      SHA256

      2b845ff4c5ee973861ccb905e73fed0bbd46ce5e311fc8910d188ec839226f58

      SHA512

      225fa056dff9c59915fbfe593d3d336c133eeab6be80f48de976f8d14cd773bde21716f489b45c007310da6eb61c9bd6681a7ec0a80559b246af07a1346dc9ba

    • memory/1680-100-0x0000000070B3D000-0x0000000070B48000-memory.dmp

      Filesize

      44KB

    • memory/1680-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1680-2-0x0000000070B3D000-0x0000000070B48000-memory.dmp

      Filesize

      44KB

    • memory/1680-0-0x000000002FC51000-0x000000002FC52000-memory.dmp

      Filesize

      4KB

    • memory/2204-97-0x0000000000050000-0x0000000000112000-memory.dmp

      Filesize

      776KB

    • memory/2204-98-0x0000000000810000-0x000000000082E000-memory.dmp

      Filesize

      120KB

    • memory/2204-107-0x0000000005EA0000-0x0000000005F2C000-memory.dmp

      Filesize

      560KB

    • memory/2428-121-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2428-120-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2428-118-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2428-117-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2428-115-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2428-113-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2428-111-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/2428-109-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB