Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-09-2024 02:15

General

  • Target

    artifact.exe

  • Size

    146KB

  • MD5

    d5c43db682644a7c08e653206f9c8d73

  • SHA1

    3df0d727a4ebd48c2f9a1012828a47271c1e4a1c

  • SHA256

    c31a2e594ba6f814f266ff511659faa3489b5508187693048e0ff17bc087bb7b

  • SHA512

    f800f0320128091b3eac64f5f7e41d425ce20be0f0b3d5ff36c35843b4212a71e9c2cc6359e3373db179317c825c84848b299145d4928b04a7cdfd5611e8c7ef

  • SSDEEP

    3072:p6glyuxE4GsUPnliByocWepsXU3tITJ9GN+YVF:p6gDBGpvEByocWesUgfGN+YVF

Malware Config

Signatures

  • Renames multiple (620) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops desktop.ini file(s) 2 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in System32 directory 4 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Control Panel 2 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\artifact.exe
    "C:\Users\Admin\AppData\Local\Temp\artifact.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1220
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:4560
    • C:\ProgramData\BB23.tmp
      "C:\ProgramData\BB23.tmp"
      2⤵
      • Checks computer location settings
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:2184
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\BB23.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1532
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:2960
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1384
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{76557D56-1951-4836-A0B0-82DA29E3D38B}.xps" 133710129255830000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:4552

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-1194130065-3471212556-1656947724-1000\GGGGGGGGGGG

      Filesize

      129B

      MD5

      b06457a79ac09da8bb78756d524c9491

      SHA1

      d6bd541904084b180de37bdddb619a349479efd3

      SHA256

      02f7e9a769952ca7b97038393a80da9174266fdaf708abb04418c8262d2d7734

      SHA512

      f03e18229ac4e612e2f4ba68fd46f38fbb4200991e8682cd3d18bb8cfc727ff594786f1c93dfa8a5905c13a505e2feef206da757a71d2b49b37c070d6f7bcfcf

    • C:\ProgramData\BB23.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • C:\Users\Admin\AppData\Local\Temp\CCCCCCCCCCCC

      Filesize

      146KB

      MD5

      e76db2db446ed8c8bad91212c55afa21

      SHA1

      a72104980c9f11ac64c877deae2a1443e75f6b84

      SHA256

      a3e4cfc731d2cfdd0ca1d2d89f891189d8fcca65a423fd32789d9f90456e27fd

      SHA512

      a6eebc8e63523b1149d52d02e5001aaf2c602479a41b368c6d2b288f00e821826ad072c6dfdcc84d8f0c855e66dca39f4e71dd85006d422a1d89845df1b97fd9

    • C:\Users\Admin\AppData\Local\Temp\{89719F99-52FF-4E4B-A743-6E342755195D}

      Filesize

      4KB

      MD5

      967b4ebf6e0d28fc8f0b400d7a6f4cb0

      SHA1

      6fdfe493342e9af05bef4bbf85add2560bcd9745

      SHA256

      54bdcfb72dcf0703bad205d4ebac2d74c5253b40911444de0fe7fc85cc03c792

      SHA512

      8ac5e2bfa9fff47ddead35883063e2f604f50af1ac64a064f536084e6a78f59dbcdbe697f48b794ec5ba1bff0067221d432ba40c0daa74056fb43c3a89ebf22c

    • C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2

      Filesize

      4KB

      MD5

      65f65c38362c3cd48fd0946d84806ba0

      SHA1

      6347a20f44603503dc83388204f0fe140df2bfd9

      SHA256

      418a7d1a8a47fbe8f34be68f836e295c01098c3c66a34f1d0bbbfb6bb86217dd

      SHA512

      e4f298e3b4d64fd598ad4463ef6ef1e162db60bc49d3fb4d2b0b30a6dfcbdfcbc3282e95d17289d4ce3e80034ab82e030af7dca75c87db689d0920187aaf77e5

    • C:\ioZ35V9gf.README.txt

      Filesize

      343B

      MD5

      72b1ffaeb7de456483f491ecceadb088

      SHA1

      ee1953abc295245ab01f35a4a823883826bf2b41

      SHA256

      eb892eac9899b995047733bb17acd4945eb42b7b49f2ee8ad52b8026bc0297a7

      SHA512

      c0e7cad617cf1490bb25fc47936edc3ae164b190ed34f2d2a50e7e84ce6e0d6712a6ba9ab351cca1589266078326a00317516c53fecf96f20eaefe15e92ce445

    • F:\$RECYCLE.BIN\S-1-5-21-1194130065-3471212556-1656947724-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      ec8988e11c3c27a38abe1e742d95eb64

      SHA1

      18aa64f63ad58ee344b27e48759344c7772df79c

      SHA256

      644f17fb853a3852389b2427462bf47a6e69e1fd6b30f8ab1cb2a67ab17f9752

      SHA512

      d0e0a56f98b9dd29a5828d248bdde28534df782301110a941f0a6bb3583aea51de635db3d9d6964724f6cddcd391d0c959113b2ca15e460ae5a2236d180d74b9

    • memory/1220-2808-0x00000000027E0000-0x00000000027F0000-memory.dmp

      Filesize

      64KB

    • memory/1220-2809-0x00000000027E0000-0x00000000027F0000-memory.dmp

      Filesize

      64KB

    • memory/1220-2810-0x00000000027E0000-0x00000000027F0000-memory.dmp

      Filesize

      64KB

    • memory/1220-1-0x00000000027E0000-0x00000000027F0000-memory.dmp

      Filesize

      64KB

    • memory/1220-0-0x00000000027E0000-0x00000000027F0000-memory.dmp

      Filesize

      64KB

    • memory/1220-2-0x00000000027E0000-0x00000000027F0000-memory.dmp

      Filesize

      64KB

    • memory/4552-2825-0x00007FFAC0AF0000-0x00007FFAC0B00000-memory.dmp

      Filesize

      64KB

    • memory/4552-2822-0x00007FFAC0AF0000-0x00007FFAC0B00000-memory.dmp

      Filesize

      64KB

    • memory/4552-2831-0x00007FFABE190000-0x00007FFABE1A0000-memory.dmp

      Filesize

      64KB

    • memory/4552-2826-0x00007FFAC0AF0000-0x00007FFAC0B00000-memory.dmp

      Filesize

      64KB

    • memory/4552-2860-0x00007FFABE190000-0x00007FFABE1A0000-memory.dmp

      Filesize

      64KB

    • memory/4552-2823-0x00007FFAC0AF0000-0x00007FFAC0B00000-memory.dmp

      Filesize

      64KB

    • memory/4552-2824-0x00007FFAC0AF0000-0x00007FFAC0B00000-memory.dmp

      Filesize

      64KB