Analysis

  • max time kernel
    92s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/02/2024, 12:16

General

  • Target
    HappyDesk1.0.0.exe
  • Size 2.0MB
  • Sample240205-pfwg2afdf3
  • SHA256 a3fd14753f2d26dbb17fec41e7cd0e8a72317c114559a3ae5ced89e22e8d85bc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 41 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 63 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies registry class 11 IoCs
  • Runs net.exe
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 53 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HappyDesk1.0.0.exe
    "C:\Users\Admin\AppData\Local\Temp\HappyDesk1.0.0.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\setup.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\setup.exe" /s
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Users\Admin\AppData\Local\Temp\GLJ4EDC.tmp
        "C:\Users\Admin\AppData\Local\Temp\GLJ4EDC.tmp" C:\Program Files (x86)\DeskHappy\dockbar.dll
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:3212
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\PROGRA~2\DESKHA~1\addtask.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4912
        • C:\Windows\SysWOW64\schtasks.exe
          SCHTASKS /Create /ru system /rp /SC DAILY /TN DeskTimer /TR C:\Windows\task32.bat /ST 20:30:00
          4⤵
          • Creates scheduled task(s)
          PID:1580
        • C:\Windows\SysWOW64\net.exe
          net start schedule
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4448
      • C:\PROGRA~2\DESKHA~1\Dockbar.exe
        "C:\PROGRA~2\DESKHA~1\Dockbar.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:3456
      • C:\Users\Admin\AppData\Local\Temp\GLJ4EDC.tmp
        "C:\Users\Admin\AppData\Local\Temp\GLJ4EDC.tmp" C:\Windows\System32\safeDesk.dll
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies registry class
        PID:1800
  • C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 start schedule
    1⤵
      PID:2300

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          76A1~1.LNK

          • Path C:\PROGRA~2\DESKHA~1\76A1~1.LNK
          • Size 684B
          • SHA256 00088fdc97d7e40b1711f3342f898af6164324859f09792fd505c8d69a7f084c
          • MD5 SHA1 SHA512

          7D4B~1.URL

          • Path C:\PROGRA~2\DESKHA~1\7D4B~1.URL
          • Size 190B
          • SHA256 1e0a040712bc8c1e8d164a162fcd94f859c6410b09089aa534cabf906a594bd3
          • MD5 SHA1 SHA512

          C325~1.URL

          • Path C:\PROGRA~2\DESKHA~1\C325~1.URL
          • Size 188B
          • SHA256 c47e0ed1cfe93438a26b2e84fa9b21385d708c33fa5d633cc5226f597f79b574
          • MD5 SHA1 SHA512

          Dockbar.exe

          • Path C:\PROGRA~2\DESKHA~1\Dockbar.exe
          • Size 144KB
          • SHA256 24433c7e4ba8d04e70d7c0a7a24e68fe3017040884bc9c3aa624e8ed7a7cb3c9
          • MD5 SHA1 SHA512 SSDEEP

          INTERN~1.LNK

          • Path C:\PROGRA~2\DESKHA~1\INTERN~1.LNK
          • Size 686B
          • SHA256 5c3052421e3dbf7b67fd6466dfd29131c64cfb5f6f14c2090c063932d8c40bd7
          • MD5 SHA1 SHA512

          UNWISE.EXE

          • Path C:\PROGRA~2\DESKHA~1\UNWISE.EXE
          • Size 149KB
          • SHA256 77360f4c519e4bba897701eb0eea820b80daf7ac7c577e5f7d9e71e1d6bb8157
          • MD5 SHA1 SHA512 SSDEEP

          addtask.bat

          • Path C:\PROGRA~2\DESKHA~1\addtask.bat
          • Size 555B
          • SHA256 62563c52cc52f6edb0982fed86d4f75fcc08fe09575e73b9dda4cd386c9c0500
          • MD5 SHA1 SHA512

          dockbar.ini

          • Path C:\PROGRA~2\DESKHA~1\dockbar.ini
          • Size 1KB
          • SHA256 239d93da28d0e4a51eae725cc7ff13a95c59f79b8a39786b56b879b10809acf1
          • MD5 SHA1 SHA512

          balloon.png

          • Path C:\PROGRA~2\DESKHA~1\images\balloon.png
          • Size 9KB
          • SHA256 fe56f245a91c0cce41ed8c0d48072cea59abbd3e0ece89903b23b6735bb32a27
          • MD5 SHA1 SHA512 SSDEEP

          ICON_B~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_B~1.PNG
          • Size 30KB
          • SHA256 03db5ced41e235b40c8e7f6248da11fcb13a17e29c292d68a1ddb16152d8c65a
          • MD5 SHA1 SHA512 SSDEEP

          ICON_B~2.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_B~2.PNG
          • Size 14KB
          • SHA256 2e0744e4507a0666b74fd73f3416ba24e3ebf5ef3a771d5a425c98fb65040653
          • MD5 SHA1 SHA512 SSDEEP

          ICON_C~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_C~1.PNG
          • Size 13KB
          • SHA256 474599d618b321e4fda986a2a58b93e16817b8b57c09a49d696f4b264791eef3
          • MD5 SHA1 SHA512 SSDEEP

          ICON_D~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_D~1.PNG
          • Size 30KB
          • SHA256 3bbc3298ce13bcb488fb7d0a67489c1a1d06d0c3dbd3a26de5706a434188098b
          • MD5 SHA1 SHA512 SSDEEP

          ICON_E~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_E~1.PNG
          • Size 23KB
          • SHA256 252a2375284d46c67440dcb3aaca2c0b44704c398a2cdb4d8884f0814a356f3a
          • MD5 SHA1 SHA512 SSDEEP

          ICON_G~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_G~1.PNG
          • Size 378KB
          • SHA256 7044ed1d2bd4d69353520fec9c99d79cdf2e05c608ca8adae8d2d12fa93e6ad0
          • MD5 SHA1 SHA512 SSDEEP

          ICON_I~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_I~1.PNG
          • Size 38KB
          • SHA256 68c728d2c96c34cec32ceb5ecd82e7ce8b2b7accd98b7f36f0130f54bb9285d3
          • MD5 SHA1 SHA512 SSDEEP

          ICON_M~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_M~1.PNG
          • Size 31KB
          • SHA256 db9bc8a4d9528a66e09042f903ea1f99e8881062e148eedf1fc278659b4b9408
          • MD5 SHA1 SHA512 SSDEEP

          ICON_P~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_P~1.PNG
          • Size 34KB
          • SHA256 209a65b56cf323308f94fffa7c2a048d8df6405c6f0263550515b66f0d2dac1a
          • MD5 SHA1 SHA512 SSDEEP

          ICON_T~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_T~1.PNG
          • Size 25KB
          • SHA256 c2373d9474e3512b7f1a89390521a633116371044e52f621e8db8ddb26f21361
          • MD5 SHA1 SHA512 SSDEEP

          ICON_W~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\ICON_W~1.PNG
          • Size 20KB
          • SHA256 e1808b36b36a33fb10f0f07faba09d297e547750518c8720aea8485cfe4275e7
          • MD5 SHA1 SHA512 SSDEEP

          PANEL_~1.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\PANEL_~1.PNG
          • Size 1KB
          • SHA256 466d9445dd01c767f5f9961d77d08bd8e8606a0fe51ee89e9f7a69b7380ffbb0
          • MD5 SHA1 SHA512

          PANEL_~2.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\PANEL_~2.PNG
          • Size 1KB
          • SHA256 5fadb82dfed95bc99e4401c5fb0e5e908d663c11392c706d958498aa512b8c27
          • MD5 SHA1 SHA512

          PANEL_~3.PNG

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\PANEL_~3.PNG
          • Size 2KB
          • SHA256 92aac8fccf68f9a39e13508e71119be775476549fab7d35b5ddc7a53eb9fa805
          • MD5 SHA1 SHA512

          icon_BMW.png

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\icon_BMW.png
          • Size 20KB
          • SHA256 141eb72543773fea1aef80843af58c3ce0b5f0cde8c60d258221fc563de5b737
          • MD5 SHA1 SHA512 SSDEEP

          icon_qq.png

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\icon_qq.png
          • Size 21KB
          • SHA256 f2185bd21757f9e27a717de282be83ef539c6af711d37008bfe45b87fdf2da68
          • MD5 SHA1 SHA512 SSDEEP

          icon_web.png

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\icon_web.png
          • Size 29KB
          • SHA256 200658fa921e954a5e94d694525489e2cc32531e62da7039e956ec1d040f88de
          • MD5 SHA1 SHA512 SSDEEP

          myie.png

          • Path C:\PROGRA~2\DESKHA~1\images\skin1\myie.png
          • Size 23KB
          • SHA256 9f975c26c66d63e556efa9ada757fe8b47897397ba4b86a5e1fe34d881a24089
          • MD5 SHA1 SHA512 SSDEEP

          ~GLH0004.TMP

          • Path C:\PROGRA~2\DESKHA~1\~GLH0004.TMP
          • Size 427KB
          • SHA256 92d0f9327368b22b6edcdaf0d15a54ca1920c8de027ec02421680dc0da03a951
          • MD5 SHA1 SHA512 SSDEEP

          dockbar.dll

          • Path C:\Program Files (x86)\DeskHappy\dockbar.dll
          • Size 344KB
          • SHA256 ee1fc66c1742005d195fa2e5e3638cfbf11a68b9a32637c40e834ea5358bf37f
          • MD5 SHA1 SHA512 SSDEEP

          GLC4ECC.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\GLC4ECC.tmp
          • Size 100KB
          • SHA256 b8c69a48ef35b2c031772b85603a681a7bb2d83dd2342ecfd4b72b9342440d1e
          • MD5 SHA1 SHA512 SSDEEP

          GLF54EB.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\GLF54EB.tmp
          • Size 10KB
          • SHA256 166d7156142f3ee09fa69eb617dd22e4fd248aa80a1ac08767db6ad99a2705c1
          • MD5 SHA1 SHA512 SSDEEP

          GLJ4EDC.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\GLJ4EDC.tmp
          • Size 2KB
          • SHA256 49833d2820afb1d7409dfbd916480f2cdf5787d2e2d94166725beb9064922d5d
          • MD5 SHA1 SHA512

          GLK50D1.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\GLK50D1.tmp
          • Size 33KB
          • SHA256 d73170ea2688da5f6f37d4ca70b72dbc061abd47615269968563b5fcbd74dd9c
          • MD5 SHA1 SHA512 SSDEEP

          setup.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\setup.EXE
          • Size 323KB
          • SHA256 fa81588825a3665cf96233d9ea31674867af370abe02e06a275a734798b1b04e
          • MD5 SHA1 SHA512 SSDEEP

          setup.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\setup.EXE
          • Size 627KB
          • SHA256 c1dc74de577903a73e0d432db64a2ee5e86bb2ae4cc8e55949b7753465fab7bf
          • MD5 SHA1 SHA512 SSDEEP

          setup.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\setup.exe
          • Size 160KB
          • SHA256 dc73c623fe0fe0450d33d1375957f3b1e52788d8fb1f356de83b9acdc13795ba
          • MD5 SHA1 SHA512 SSDEEP

          safeDesk.dll

          • Path C:\Windows\SysWOW64\safeDesk.dll
          • Size 625KB
          • SHA256 ac89888fce1b5479869663df253f8b1964a0a2f0e14c3cb6b7ef6868ce4941e9
          • MD5 SHA1 SHA512 SSDEEP

          task32.bat

          • Path C:\Windows\task32.bat
          • Size 94B
          • SHA256 8627bdd71fd98ae3a02bb367a2938041bdcdd22e520f835b6dfaab3fb9fa3c3b
          • MD5 SHA1 SHA512

          memory/1800-364-0x0000000000680000-0x0000000000725000-memory.dmp

          memory/2348-406-0x0000000000400000-0x0000000000423000-memory.dmp

          memory/3212-357-0x00000000020F0000-0x0000000002164000-memory.dmp

          memory/3212-359-0x0000000001E80000-0x0000000001E81000-memory.dmp