Analysis

  • max time kernel
    118s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    19/09/2024, 19:31

General

  • Target

    $TEMP/scenic-surfsup-screensaver.exe

  • Size

    1.5MB

  • MD5

    4aa39620ed7d3069a6642d3cea044c7c

  • SHA1

    ce278c857e39c8df0374f4d75aee707c2a272294

  • SHA256

    90f339fe11994eaea3c3e8d83c83240ea0357b257852b17007c008322ec4c2d1

  • SHA512

    8781282699293330d79b017c29e7bdaa5614974376bd6d5b1dd0c126e55ff16a6268e32d3549b12813b0c61b77e6a14246eef6f5cf4d98c68ba418f0e8f4cf51

  • SSDEEP

    49152:xyYQZuTWblogtmDRaCh2liWoWu8DBGOYcQ6N1:xyYQnGWgRKUCJYGN1

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 1 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 2 IoCs

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

  • Modifies Control Panel 6 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$TEMP\scenic-surfsup-screensaver.exe
    "C:\Users\Admin\AppData\Local\Temp\$TEMP\scenic-surfsup-screensaver.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2732
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" desk.cpl,InstallScreenSaver C:\Windows\Scenic- Surf's up.scr
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Control Panel
      • Suspicious use of WriteProcessMemory
      PID:2856
      • C:\Windows\Scenic- Surf's up.scr
        "C:\Windows\Scenic- Surf's up.scr" /p 393752
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Suspicious use of SetWindowsHookEx
        PID:948

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Themes\Custom.theme

    Filesize

    1KB

    MD5

    a0ab38e737448b520cb7bd0ddf084695

    SHA1

    0a8f4c106ccad44dbecb3bf6a265bd546abc28ca

    SHA256

    647b34d6708c82d70a78189146ac057ab97c26a97cacd9c3ecd66177df4fa637

    SHA512

    36683c5ac11e6ff142170d3f42233aa636e6e4209642246143768c6c78f1579e714852033d1c5c2d7a336dcb6435de5831ee4dc22b3055c93a311ec69a8ba420

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Themes\Custom.theme

    Filesize

    1KB

    MD5

    020570a88c0692f7f3d1d42379058765

    SHA1

    bef5e581e4c7ef4f171c165911145dca9c68287e

    SHA256

    16efc91532dc5d3d151ce5bdb882e6831d562a54bf8592c31052159ce929cddb

    SHA512

    1f47d19f8f2dc77e7ab9fa12b096bb41600f84b67cc22fd41886b9a759c32c3565db23a1dfe039a1d376ffe7d510b3603f0acc5df14886d254235329e074ef9e

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Themes\Custom.theme

    Filesize

    1KB

    MD5

    29e0e345438882a935d2c0baff457f6c

    SHA1

    aef4d88c8c81bc9d9440e1f94f792f6ab83e2b5a

    SHA256

    0c127592f7670047d0b1928fede6ecf7c827b9e8086500b23756e5c02d09a4c6

    SHA512

    8b87df27f7edc9328debeb3a0f68468d1d46615122e815d03330a9682776f85a47ef37889fc210fb28e56d91bf8cf0f0e594f90c3eaff5827dfd57b97a0b359b

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Themes\Custom.theme

    Filesize

    1KB

    MD5

    2fbde36ad3efa90d789e9efd0a74dcae

    SHA1

    591926a5902b13c6630c5fd4e6b8ff92c8612dda

    SHA256

    65fa5cd7aeaffc0b14b279cdd9d2be2feadfdec262d647d75c76e0fb3ae6d748

    SHA512

    874ebbb47c879498892b82e74670ba8634b5e6769a77fac08a86f4b088de4e22e3d636d90c69d45bfa5714a33f589304593f145091fb94ca007729e037fba2a7

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Themes\Custom.theme

    Filesize

    1KB

    MD5

    413022ab1747b5e450ed42fb50acfe59

    SHA1

    bd6c44c72d781a77a260aab4e82aabe752ec0348

    SHA256

    139a6e1c11743299ef0ff9020017a87bf3e701632269d91ccb1f69ef2d08faea

    SHA512

    8e05d46b0d592b3975ad3ec42888eae7a65a0616105cfb6450e3f7330eb168013908a353c893ec9387ae91414bbbe212be777948aa0bb2e4466363b0ceba4c28

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\Themes\Custom.theme

    Filesize

    1KB

    MD5

    eaaa428b6635249343ab73bbbf14a0ae

    SHA1

    f48c7e01a7ece47f9654389c3187778f6e86412b

    SHA256

    6b876b388b7bb92600bea61e81215e6d8ae84894624d98e0162f923321da0533

    SHA512

    b9b4f12061778ad4b310b16c293f3ef41c9df3c71304b5cd14e53133bb8c6d9b7d421ce0ca9e08993be01bbdf44f8e781f2f3eb8c4bd386a902f5aeb139ce713

  • C:\Users\Admin\AppData\Local\Temp\instcfg.ini

    Filesize

    299B

    MD5

    562636dfd2d2370b7118bcd319a52a89

    SHA1

    43dd6f0fd2e954825822bf3c9d9720d077f74305

    SHA256

    24314bb42b61cd13a361bee6124b91e0b50de068a4a52b257021f4ccc7315167

    SHA512

    f511f0d992dd13560afd3696e7a28acd1209d2a98b73014c955d6fad120d9808ef3b668767087dea3b3078b5dc348a3714c72358da25a43662005a2eef5aa9c4

  • C:\Users\Admin\AppData\Local\scrcfg.ini

    Filesize

    758B

    MD5

    daf6b156b11ebb26f93863b6d028ca60

    SHA1

    018d497a359faa2530c8bfd2722fa81fb2542479

    SHA256

    e0d408cf5e323f6cb4444e720ef771558f32e39eda89c4c0bce1909452a14583

    SHA512

    7adeb4d2a503af225b290e47db0bc41161014878543c02f7937fb26fc403076b0a6e1c9c5cbb21479ce21f5e6a74c4171f4fd776a50184db4ed988f962b4795f

  • C:\Windows\Scenic- Surf's up.scr

    Filesize

    685KB

    MD5

    5802762f6362858663b9e03d2063977c

    SHA1

    1763d4dfca330ea797af4a23468cc1dc39a438fb

    SHA256

    1e2ab892be751758e257517ad75fb25db658cac0898a02b1878deccaaa62a026

    SHA512

    bb799802d341c92a8d910497265d7e7c77e867e2478ccc0a18543ec5834affaf5773d56fd3056eb601af9099496e5adfa2c4569815f48c14c18af345923a1c79

  • \Windows\SysWOW64\Macromed\Flash\flash8.ocx

    Filesize

    1.4MB

    MD5

    900373c059c2b51ca91bf110dbdecb33

    SHA1

    102b086d6054c2cea813ef316ce24440c458762b

    SHA256

    31453fd8f743c19e27f8fa04ee88dfebe95a7884cdfbc15ab0eb8994829aad61

    SHA512

    b17d68cd1e4f1c2fcc7f07de657af144302d4a0cb7b6a0d6bbed4fcd39227481abae73df2d59bf13a31a47b2b6aba820182881b43e638aa00da75ba6b94adbfe