Analysis

  • max time kernel
    147s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-09-2024 06:35

General

  • Target

    20240912b21c2852af7dcd9ace66706377ba9c78darkside.exe

  • Size

    146KB

  • MD5

    b21c2852af7dcd9ace66706377ba9c78

  • SHA1

    60ff856d7d54cbbd260c686bb91550187095e58a

  • SHA256

    aa7a61aeaeee53231fd2a8473895cbb2810baf9cd78ea3db6a984b03bc5eb68b

  • SHA512

    4307461cf0790acda6705aaefbf7330c425ea25f944166d3ba8c19809fe03953a552e35c5f95300b9aad8d227430bd173b568d51abbf6d296b964efcffdd07eb

  • SSDEEP

    3072:T6glyuxE4GsUPnliByocWepHUWKL10B17:T6gDBGpvEByocWeJ6IV

Malware Config

Signatures

  • Renames multiple (629) 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\20240912b21c2852af7dcd9ace66706377ba9c78darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\20240912b21c2852af7dcd9ace66706377ba9c78darkside.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:3460
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
      • Drops file in System32 directory
      PID:1492
    • C:\ProgramData\9CAE.tmp
      "C:\ProgramData\9CAE.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:3800
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\9CAE.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1708
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
    1⤵
      PID:1524
    • C:\Windows\system32\printfilterpipelinesvc.exe
      C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
      1⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:1804
      • C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
        /insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{3791C58A-DD0A-43FC-8B04-A1CA5FB114D5}.xps" 133706829288600000
        2⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of SetWindowsHookEx
        PID:3680

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-2412658365-3084825385-3340777666-1000\desktop.ini

      Filesize

      129B

      MD5

      29748f056a9f8fa09d5401ed04588b84

      SHA1

      9277e391eb0effed0166f36d81315799f4c8cafb

      SHA256

      661e19ebe50394497efc344092f427b36df2771d1d6e46a7556e05c0cb36389e

      SHA512

      ed773e78dffcaf1b43897e885a3c2acc04e84f4d916cce93f75fd5bf6b724ed1e9c3256f71fec3b249c1a56f1c950172073e583dccb714bd795ac69d92196a17

    • C:\ProgramData\9CAE.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

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

      Filesize

      146KB

      MD5

      e4640bdeab17b7d72d2ef02e37e59c0a

      SHA1

      9d7d6cf76818e67d8d63b7d0fae2f46f934f94ee

      SHA256

      37c31fe354242cdf7794cb65731fdda1026a90c65e56c629cc7321c126dd7a29

      SHA512

      e371ef0ccf95e48a25c13520aa0314220134ddc4365000c82995367bbfd8584eb88ccd00ecf42308702b6c3a3fb0cd155d6350889aa623fac9bed356ce37659d

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

      Filesize

      4KB

      MD5

      80799e73c671f869db5d180407e4a215

      SHA1

      46623a7315077694b36a8178eb7edcf60527d04d

      SHA256

      584efd17f499e6f82705f9c0573c45a96c377f77baea478fa6a187c550e5ea98

      SHA512

      6ef40c2f343cd1c270e4368103a6a9b0cd71f4e0a347fd701de7cf01c5b55ae24cba9918c25b7ac947e3644556ca56a2453ea6fb5287f3a9b261a4e59f04dbc0

    • C:\fjTsbCI2x.README.txt

      Filesize

      343B

      MD5

      72b1ffaeb7de456483f491ecceadb088

      SHA1

      ee1953abc295245ab01f35a4a823883826bf2b41

      SHA256

      eb892eac9899b995047733bb17acd4945eb42b7b49f2ee8ad52b8026bc0297a7

      SHA512

      c0e7cad617cf1490bb25fc47936edc3ae164b190ed34f2d2a50e7e84ce6e0d6712a6ba9ab351cca1589266078326a00317516c53fecf96f20eaefe15e92ce445

    • F:\$RECYCLE.BIN\S-1-5-21-2412658365-3084825385-3340777666-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      d8960a707e948ad68d95b7dfee93b3d7

      SHA1

      efceee11a82a19804516f2098face9c1a349b4cd

      SHA256

      57dd6bb6409e7de88aa4444bceec718c45bd10cd9fc7f3ef0a454b1846508996

      SHA512

      dc71505717a21f9008f3ccaffe9a0797cc37937e17591c92c30fa46eca77d98aa180838eb95dd84c650bbcbc56c22bc127ad9cfd6f743eb946eae62a41b75f04

    • memory/3460-2817-0x0000000000F10000-0x0000000000F20000-memory.dmp

      Filesize

      64KB

    • memory/3460-2818-0x0000000000F10000-0x0000000000F20000-memory.dmp

      Filesize

      64KB

    • memory/3460-2-0x0000000000F10000-0x0000000000F20000-memory.dmp

      Filesize

      64KB

    • memory/3460-2819-0x0000000000F10000-0x0000000000F20000-memory.dmp

      Filesize

      64KB

    • memory/3460-0-0x0000000000F10000-0x0000000000F20000-memory.dmp

      Filesize

      64KB

    • memory/3460-1-0x0000000000F10000-0x0000000000F20000-memory.dmp

      Filesize

      64KB

    • memory/3680-2837-0x00007FFCE46F0000-0x00007FFCE4700000-memory.dmp

      Filesize

      64KB

    • memory/3680-2836-0x00007FFCE46F0000-0x00007FFCE4700000-memory.dmp

      Filesize

      64KB

    • memory/3680-2835-0x00007FFCE46F0000-0x00007FFCE4700000-memory.dmp

      Filesize

      64KB

    • memory/3680-2838-0x00007FFCE46F0000-0x00007FFCE4700000-memory.dmp

      Filesize

      64KB

    • memory/3680-2839-0x00007FFCE46F0000-0x00007FFCE4700000-memory.dmp

      Filesize

      64KB

    • memory/3680-2868-0x00007FFCE1D90000-0x00007FFCE1DA0000-memory.dmp

      Filesize

      64KB

    • memory/3680-2869-0x00007FFCE1D90000-0x00007FFCE1DA0000-memory.dmp

      Filesize

      64KB