Analysis

  • max time kernel
    147s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-09-2024 16:47

General

  • Target

    2024-09-16_acc4a833d7fcb673575e7f367c84975e_darkside.exe

  • Size

    146KB

  • MD5

    acc4a833d7fcb673575e7f367c84975e

  • SHA1

    25511d16f72bb726e2ebec2fd5606f870b86c7c2

  • SHA256

    afccf40b9f82b11ee3ab70712540d3690f7cb75851aad9a882c17d57b105752b

  • SHA512

    19b41b81ba99183e4726d5fb671e447a6a12e8c6aba5aa61972aab916a452f10f5ce6c7abf84f05310f33e32aa28b161ae49d7864d16e4371cb6f35e2d8fab33

  • SSDEEP

    3072:76glyuxE4GsUPnliByocWepsqiRrQ4Kdx:76gDBGpvEByocWeWqi24m

Malware Config

Signatures

  • Renames multiple (578) 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\2024-09-16_acc4a833d7fcb673575e7f367c84975e_darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-16_acc4a833d7fcb673575e7f367c84975e_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:2800
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:5052
    • C:\ProgramData\B269.tmp
      "C:\ProgramData\B269.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:4280
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\B269.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4320
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:4120
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4196
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{3E2AD35C-BCC7-4EF4-8CD9-D505E322C9D2}.xps" 133709788428440000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:4072

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-1302416131-1437503476-2806442725-1000\CCCCCCCCCCC

      Filesize

      129B

      MD5

      62468eabb6a5ae993f0461e753e06141

      SHA1

      6ca87d205bc4da6eb0263fe100e30b280c3e1804

      SHA256

      575c17630b1805f67371b73dce3288ebbb38c3f98e890f614e8339f309f875b8

      SHA512

      3247d0b4ffe8e5e80dada678fcae62a07dbdff56b306925fdf58e3e9624fd4fca7a4fee87a7842e363b5ab96131f5a931a105cdf51ecf5beffc0cc75d351a0e6

    • C:\ProgramData\B269.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

      Filesize

      146KB

      MD5

      e5a1763d97ba3420a17d6f5dd66119c9

      SHA1

      2c51ea38a050c46fab32fe480f3bcfc5312da490

      SHA256

      799494ef3cc726a87a06ca7c20ec6195eab6e952aea55681ef6103ae81e86fd3

      SHA512

      0dc2bff98719e8b5a223455f163d69ae62d3815ac5a360a52e5bb48afec786c3e6a658884b0e4661be5d2244e650c2a1d4bfb0e2279d14b3c4be85a5861b887e

    • C:\m4ON32nMm.README.txt

      Filesize

      343B

      MD5

      72b1ffaeb7de456483f491ecceadb088

      SHA1

      ee1953abc295245ab01f35a4a823883826bf2b41

      SHA256

      eb892eac9899b995047733bb17acd4945eb42b7b49f2ee8ad52b8026bc0297a7

      SHA512

      c0e7cad617cf1490bb25fc47936edc3ae164b190ed34f2d2a50e7e84ce6e0d6712a6ba9ab351cca1589266078326a00317516c53fecf96f20eaefe15e92ce445

    • F:\$RECYCLE.BIN\S-1-5-21-1302416131-1437503476-2806442725-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      ea1e318599e79d97c9cf045dd067f059

      SHA1

      46eb2f1b86350578e9612b9cc8d7c6749c502c46

      SHA256

      52c17f6f9f38386a8cdc8b675f6805979add3d247c86aaf9f46a27361736ed1d

      SHA512

      a6298dccd080bd4a7fdcaef458fa51d02136753f7283d84558066a3d26c6af3e03466f7d728343b50545b850b9c4208846ea40b5d0734744aab5825d0dc1fd91

    • memory/2800-2759-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/2800-2757-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/2800-2758-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/2800-0-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/2800-2-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/2800-1-0x0000000000C60000-0x0000000000C70000-memory.dmp

      Filesize

      64KB

    • memory/4072-2774-0x00007FFBDE530000-0x00007FFBDE540000-memory.dmp

      Filesize

      64KB

    • memory/4072-2777-0x00007FFBDE530000-0x00007FFBDE540000-memory.dmp

      Filesize

      64KB

    • memory/4072-2778-0x00007FFBDE530000-0x00007FFBDE540000-memory.dmp

      Filesize

      64KB

    • memory/4072-2779-0x00007FFBDE530000-0x00007FFBDE540000-memory.dmp

      Filesize

      64KB

    • memory/4072-2776-0x00007FFBDE530000-0x00007FFBDE540000-memory.dmp

      Filesize

      64KB

    • memory/4072-2808-0x00007FFBDBCE0000-0x00007FFBDBCF0000-memory.dmp

      Filesize

      64KB

    • memory/4072-2809-0x00007FFBDBCE0000-0x00007FFBDBCF0000-memory.dmp

      Filesize

      64KB