Analysis

  • max time kernel
    121s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    15-09-2024 06:51

General

  • Target

    2024-09-15_8b4ff23ebd887a44d0383ef513aca063_darkside.exe

  • Size

    146KB

  • MD5

    8b4ff23ebd887a44d0383ef513aca063

  • SHA1

    ec4d050d74b2088ccdc5e75955a011506e1b1687

  • SHA256

    cd4a001ca9419ac6e0220333a5d0a843698abf5bab58040fdf1725df6e2f34ed

  • SHA512

    40e6d5ad6137ddbd552e9902d9671ab26eb678499c1249204445cee7896b887a1f0fd48690d7066667459ef3c8e8a4fb2cdb07a93cc02266e21b1555d7f942e8

  • SSDEEP

    3072:Y6glyuxE4GsUPnliByocWepf3Ggr5QZLkZKXNx:Y6gDBGpvEByocWeZGgFoz

Malware Config

Signatures

  • Renames multiple (327) files with added filename extension

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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.

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • 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.

  • Modifies Control Panel 2 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: RenamesItself 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-15_8b4ff23ebd887a44d0383ef513aca063_darkside.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-15_8b4ff23ebd887a44d0383ef513aca063_darkside.exe"
    1⤵
    • Loads dropped DLL
    • 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:2392
    • C:\ProgramData\27EB.tmp
      "C:\ProgramData\27EB.tmp"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:1612
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C DEL /F /Q C:\PROGRA~3\27EB.tmp >> NUL
        3⤵
        • System Location Discovery: System Language Discovery
        PID:864
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x148
    1⤵
      PID:2560

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\$Recycle.Bin\S-1-5-21-3533259084-2542256011-65585152-1000\desktop.ini

      Filesize

      129B

      MD5

      69c23af2721caf1b9f795af22314164a

      SHA1

      3bd30e5fde2801619314f5c7862083f51b9f082d

      SHA256

      c4b51b0923d2ec1933060d03c169c44093b19655a4d80e9cd2b095592a38b215

      SHA512

      d874f58a4a5c91a2d95243d9df582396ba3e8d488e0d28a707de7f99ba218777078846331fcd522c5f51d2fdd49a7d817cab1614bb7b489f515c3a891d1de111

    • C:\SsCWUDNQz.README.txt

      Filesize

      343B

      MD5

      72b1ffaeb7de456483f491ecceadb088

      SHA1

      ee1953abc295245ab01f35a4a823883826bf2b41

      SHA256

      eb892eac9899b995047733bb17acd4945eb42b7b49f2ee8ad52b8026bc0297a7

      SHA512

      c0e7cad617cf1490bb25fc47936edc3ae164b190ed34f2d2a50e7e84ce6e0d6712a6ba9ab351cca1589266078326a00317516c53fecf96f20eaefe15e92ce445

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

      Filesize

      146KB

      MD5

      e3603be79fef7ce79c97c46783f0d29c

      SHA1

      ea4b3eb8fe405c5e42ea319264680cf260f22393

      SHA256

      73194a2a00703beee9263885228ec679bdc5b7bbca3fee6d1489ddbb185dcd16

      SHA512

      c56eec3a412d77099f58c0635afde67d2663a8a138d2787cbf5e5a10941e48200e9b5c73a95200f1032f972bd2de797fddb38fb2c14e7a2cdb4250fcfd26802b

    • F:\$RECYCLE.BIN\S-1-5-21-3533259084-2542256011-65585152-1000\DDDDDDDDDDD

      Filesize

      129B

      MD5

      df9b70adc649d7081c2bb1cf333da23a

      SHA1

      f43dee2bdd5839ca276ee215b457d31fb1098cda

      SHA256

      6be6b02ca84bdd4ee6bb0662f7b0566ac10dbee74437c0acfbf6540657f0a8c5

      SHA512

      b22a2d9192aeffc88087fc7cbbc2c3b9b68832173c70bcb124025b52518310baa28e58ccba26cd39cd124cc839625d645b29333ec202349c248eeba38ef44d7c

    • \ProgramData\27EB.tmp

      Filesize

      14KB

      MD5

      294e9f64cb1642dd89229fff0592856b

      SHA1

      97b148c27f3da29ba7b18d6aee8a0db9102f47c9

      SHA256

      917e115cc403e29b4388e0d175cbfac3e7e40ca1742299fbdb353847db2de7c2

      SHA512

      b87d531890bf1577b9b4af41dddb2cdbbfa164cf197bd5987df3a3075983645a3acba443e289b7bfd338422978a104f55298fbfe346872de0895bde44adc89cf

    • memory/1612-860-0x0000000000401000-0x0000000000404000-memory.dmp

      Filesize

      12KB

    • memory/1612-863-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/1612-862-0x0000000000400000-0x0000000000407000-memory.dmp

      Filesize

      28KB

    • memory/2392-1-0x0000000000C80000-0x0000000000CC0000-memory.dmp

      Filesize

      256KB

    • memory/2392-0-0x0000000000C80000-0x0000000000CC0000-memory.dmp

      Filesize

      256KB