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22-08-2024 18:43

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21-08-2024 17:16

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30-06-2024 00:59

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20-06-2024 02:02

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Analysis

  • max time kernel
    1401s
  • max time network
    1167s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21-08-2024 17:16

General

  • Target

    Documents/Ransomware.TeslaCrypt/Ransomware.TeslaCrypt/3372c1edab46837f1e973164fa2d726c5c5e17bcb888828ccd7c4dfcc234a370.exe

  • Size

    284KB

  • MD5

    209a288c68207d57e0ce6e60ebf60729

  • SHA1

    e654d39cd13414b5151e8cf0d8f5b166dddd45cb

  • SHA256

    3372c1edab46837f1e973164fa2d726c5c5e17bcb888828ccd7c4dfcc234a370

  • SHA512

    ce4a7e42738154183fc53702f0841dfd4ad1eb0567b13cc1ff0909f1d330e9cd2fb994375efc6f02e7eddaaae1f465ff93458412143266afdaff1c6bf6477fc3

  • SSDEEP

    3072:rYXT8PUsMNL8V4tD2My/JAAbQoM29wlV58lbNnolY7VgsYiVTPtiTu/q:rowUsML8g2j0o9wb0bNoaKsYImui

Malware Config

Signatures

  • Renames multiple (3993) files with added filename extension

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

  • Drops file in Drivers directory 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.

  • Adds Run key to start application 2 TTPs 1 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 64 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 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.

  • Modifies Control Panel 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Documents\Ransomware.TeslaCrypt\Ransomware.TeslaCrypt\3372c1edab46837f1e973164fa2d726c5c5e17bcb888828ccd7c4dfcc234a370.exe
    "C:\Users\Admin\AppData\Local\Temp\Documents\Ransomware.TeslaCrypt\Ransomware.TeslaCrypt\3372c1edab46837f1e973164fa2d726c5c5e17bcb888828ccd7c4dfcc234a370.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5040
    • C:\Users\Admin\AppData\Roaming\hwgbxlf.exe
      C:\Users\Admin\AppData\Roaming\hwgbxlf.exe
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in System32 directory
      • Sets desktop wallpaper using registry
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies Control Panel
      • Suspicious behavior: EnumeratesProcesses
      PID:3948
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\DOCUME~1\RANSOM~1.TES\RANSOM~1.TES\3372C1~1.EXE >> NUL
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3704

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\hwgbxlf.exe

    Filesize

    284KB

    MD5

    209a288c68207d57e0ce6e60ebf60729

    SHA1

    e654d39cd13414b5151e8cf0d8f5b166dddd45cb

    SHA256

    3372c1edab46837f1e973164fa2d726c5c5e17bcb888828ccd7c4dfcc234a370

    SHA512

    ce4a7e42738154183fc53702f0841dfd4ad1eb0567b13cc1ff0909f1d330e9cd2fb994375efc6f02e7eddaaae1f465ff93458412143266afdaff1c6bf6477fc3