Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 11:35

General

  • Target
    9df8195bcf7875fbe9c606b0c55dd237edc3160078ac927c94995378d59b3409.exe
  • Size 348KB
  • Sample240531-np7e8age49
  • SHA256 9df8195bcf7875fbe9c606b0c55dd237edc3160078ac927c94995378d59b3409
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Renames multiple (594) files with added filename extension

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

  • 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
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • 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
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 13 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9df8195bcf7875fbe9c606b0c55dd237edc3160078ac927c94995378d59b3409.exe
    "C:\Users\Admin\AppData\Local\Temp\9df8195bcf7875fbe9c606b0c55dd237edc3160078ac927c94995378d59b3409.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:900
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:3472
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:3984
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:984
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{19A0A2F8-8F6D-4651-BE9E-A93ACB09C632}.xps" 133616289369310000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:5080

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          BBBBBBBBBBB

          • Path C:\$Recycle.Bin\S-1-5-21-1337824034-2731376981-3755436523-1000\BBBBBBBBBBB
          • Size 129B
          • SHA256 cd30bc7ebda1d9755881db9aa5a1ab1df4fee505ac9988a5bb0097ba492bad84
          • MD5 SHA1 SHA512

          CHR4bQVWh.README.txt

          • Path C:\CHR4bQVWh.README.txt
          • Size 122B
          • SHA256 f722457807534d1c563d6cfaa43e3a8b90d721dcef1d48c0a3921b4025cd6bda
          • MD5 SHA1 SHA512

          Open Notebook.onetoc2

          • Path C:\Users\Admin\Documents\OneNote Notebooks\My Notebook\Open Notebook.onetoc2
          • Size 4KB
          • SHA256 31ad354e5efe3605399b8984d20d418eba01f7d836729edd215ec53a9b934e69
          • MD5 SHA1 SHA512 SSDEEP

          DDDDDDDDDDD

          • Path F:\$RECYCLE.BIN\S-1-5-21-1337824034-2731376981-3755436523-1000\DDDDDDDDDDD
          • Size 129B
          • SHA256 957736c96350085fecec65f96c0e1c3491fa6f72b240a2af1c4169d3fe3b34ca
          • MD5 SHA1 SHA512

          memory/900-10-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/900-3-0x00000000006F0000-0x00000000006F1000-memory.dmp

          memory/900-9-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/900-8-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/900-7-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/900-4-0x00000000006B0000-0x00000000006EC000-memory.dmp

          memory/900-1-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/900-6-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/900-0-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/900-5-0x0000000000401000-0x0000000000419000-memory.dmp

          memory/900-2739-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/900-2-0x0000000000400000-0x0000000000442000-memory.dmp

          memory/5080-2753-0x00007FFEA9930000-0x00007FFEA9940000-memory.dmp

          memory/5080-2752-0x00007FFEA9930000-0x00007FFEA9940000-memory.dmp

          memory/5080-2754-0x00007FFEA9930000-0x00007FFEA9940000-memory.dmp

          memory/5080-2755-0x00007FFEA9930000-0x00007FFEA9940000-memory.dmp

          memory/5080-2756-0x00007FFEA7650000-0x00007FFEA7660000-memory.dmp

          memory/5080-2757-0x00007FFEA7650000-0x00007FFEA7660000-memory.dmp

          memory/5080-2751-0x00007FFEA9930000-0x00007FFEA9940000-memory.dmp