Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-10-2024 01:20

General

  • Target

    2024-10-10_a7be144ff0b871ddd45e1e0bef06faa6_darkside.exe

  • Size

    146KB

  • MD5

    a7be144ff0b871ddd45e1e0bef06faa6

  • SHA1

    811797d3e0ce7c5ed76ff656156a2c066f306032

  • SHA256

    22a164ed481ba88df26ce7e819f2240d7fafa5b6ee2cd2993cb5fae3d566be7f

  • SHA512

    caeec8ed5080f00fe1134b968c81f13660ac1a9312d1f151b676f2a0b3670b2c0440e00c8a5e398d91707be5989d34e547ff3d5b4facbba81705c41f52bb3367

  • SSDEEP

    3072:46glyuxE4GsUPnliByocWep0AMmr7fTP+Gldf:46gDBGpvEByocWeRMa3P

Malware Config

Signatures

  • Renames multiple (633) 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 3 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\2024-10-10_a7be144ff0b871ddd45e1e0bef06faa6_darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-10-10_a7be144ff0b871ddd45e1e0bef06faa6_darkside.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:4620
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:3436
    • C:\ProgramData\EF24.tmp
      "C:\ProgramData\EF24.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:4176
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\EF24.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2068
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:4536
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1200
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{7624BBDC-7656-42BC-A1B3-C1A8BF323E58}.xps" 133729968216280000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:4524

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\S-1-5-21-3756129449-3121373848-4276368241-1000\desktop.ini

      Filesize

      129B

      MD5

      6e45113e1bb2e0235f4779f55e25411f

      SHA1

      857bf69ca6c7e5ddb5646cda80fb223526339285

      SHA256

      e401657b4fa682193c75cbce16d1cc61ae619a6b80c53fb02ab5fff923806884

      SHA512

      dd05509a158ca0050028ca3a211370f3bf0debdb4c4be44066eecde913060752be74a5f29dd0f8961997a24735f032d39a6caa102c0479db00e948c085c775b8

    • C:\OC9oMrMV8.README.txt

      Filesize

      343B

      MD5

      a8864aa0987b12bc59008a02c3ddda88

      SHA1

      54327dba296f734aae7ba65faf0b3dd8cb73b714

      SHA256

      168c71031668b64e0ccf26e81353f6eacb3599edbaf62f7aa62c55b8075a5a8f

      SHA512

      5a94b41a4f74354978c32dbe18d505bda8db0a0195f1df1749f81478c0bc0e022b744972f0c491a33b595fc9b21c7b5b59252ec5451b14cf15cbb6c936954dd8

    • C:\ProgramData\EF24.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

      Filesize

      146KB

      MD5

      ace23a6a2ed972d41b7f536f13ccf54c

      SHA1

      0cef1e03f8f0e3bae639f280475f84b40bcfadd6

      SHA256

      2f002b07ee0596760ee3fcd90581651c490270edd72c78374de23e9907b329cf

      SHA512

      546c7ff68b8fb991e4967a5173e4ace7278f542e5ad491b7c7940d72901e665c49b56a77075e377ba26e115401b459817fe275716bdb991e9724e729d2109015

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

      Filesize

      4KB

      MD5

      3f49703a91db9d9be466792bd8a3a071

      SHA1

      fb0903def41dce7631092662ff75ce21b6b661dc

      SHA256

      f9825133d986691a8ea59a1571c941e82d796b307abd1930162337b785152be0

      SHA512

      ee02ed5891ff756a57a86d8028092312dce74343b14c81ea6ee7c93980ea3bd09a3c9ee3e1f03cb5e143c5f76db4b395e17f749ec82519a08faf049b679ba8db

    • F:\$RECYCLE.BIN\S-1-5-21-3756129449-3121373848-4276368241-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      1263b6d5417d367d0daf05b14bf184c9

      SHA1

      de529841a4aed65b4316bfbc5574d5b491e37afe

      SHA256

      f52ad1cb6a0721301fb418c8005236f88dee65e3cfb079ab6937329ee1e2684a

      SHA512

      d962be5607aede6f7d16ada7bcd563445d769bc67c763c2ef1db9192a605a3eabd0697b4f03ebad89f3cd42cd66d26b1f88e3885d186a16568b6e14378d94ef0

    • memory/4524-2985-0x00007FFC0C470000-0x00007FFC0C480000-memory.dmp

      Filesize

      64KB

    • memory/4524-2983-0x00007FFC0C470000-0x00007FFC0C480000-memory.dmp

      Filesize

      64KB

    • memory/4524-2986-0x00007FFC0C470000-0x00007FFC0C480000-memory.dmp

      Filesize

      64KB

    • memory/4524-2987-0x00007FFC0C470000-0x00007FFC0C480000-memory.dmp

      Filesize

      64KB

    • memory/4524-2988-0x00007FFC0C470000-0x00007FFC0C480000-memory.dmp

      Filesize

      64KB

    • memory/4524-3018-0x00007FFC0A200000-0x00007FFC0A210000-memory.dmp

      Filesize

      64KB

    • memory/4524-3019-0x00007FFC0A200000-0x00007FFC0A210000-memory.dmp

      Filesize

      64KB

    • memory/4620-2968-0x0000000000760000-0x0000000000770000-memory.dmp

      Filesize

      64KB

    • memory/4620-2969-0x0000000000760000-0x0000000000770000-memory.dmp

      Filesize

      64KB

    • memory/4620-2967-0x0000000000760000-0x0000000000770000-memory.dmp

      Filesize

      64KB

    • memory/4620-1-0x0000000000760000-0x0000000000770000-memory.dmp

      Filesize

      64KB

    • memory/4620-2-0x0000000000760000-0x0000000000770000-memory.dmp

      Filesize

      64KB

    • memory/4620-0-0x0000000000760000-0x0000000000770000-memory.dmp

      Filesize

      64KB