Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    31-01-2022 18:05

General

  • Target

    e551e2105969587b635e0186a5b3cbf25251912cff9e20945091989966e4d074.exe

  • Size

    216KB

  • MD5

    3e9fd147f112f0636baddaea44d6f19f

  • SHA1

    2a8a7c0d7df7d7377a20e790a12385ca6c09eb92

  • SHA256

    e551e2105969587b635e0186a5b3cbf25251912cff9e20945091989966e4d074

  • SHA512

    05cc8689560ee501b19d83570b29cd9da7ff02531c5c3764650060ce72a9ea33828c81bbe97158a6ef04df61f6d28bf3ec2486d7c47d18b1b7512e6c16c5f8b6

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Sets service image path in registry 2 TTPs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 41 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e551e2105969587b635e0186a5b3cbf25251912cff9e20945091989966e4d074.exe
    "C:\Users\Admin\AppData\Local\Temp\e551e2105969587b635e0186a5b3cbf25251912cff9e20945091989966e4d074.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:396
    • C:\Users\Admin\AppData\Local\Temp\3582-490\e551e2105969587b635e0186a5b3cbf25251912cff9e20945091989966e4d074.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\e551e2105969587b635e0186a5b3cbf25251912cff9e20945091989966e4d074.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:3620
  • C:\Windows\System32\WaaSMedicAgent.exe
    C:\Windows\System32\WaaSMedicAgent.exe 7ab20d6ae37f25a7b44e0e0002a48ac1 6cKx+EsaOUGfvBZ7EjPQJw.0.1.0.0.0
    1⤵
    • Modifies data under HKEY_USERS
    PID:656

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\e551e2105969587b635e0186a5b3cbf25251912cff9e20945091989966e4d074.exe
    MD5

    61d35eee356fba70f4e30e6a5b7d8d6c

    SHA1

    159626a6bdbf248e45e9355a728a9bd5bb9b4acb

    SHA256

    d9e4109bb50598be423d670aa3ae602a350001bf719f6929b3f43fc4efa27088

    SHA512

    555b529b79ca710c1165aadc3bcd755e81c47d5538055c4d2402d9b72dba9c2c03126fe5b9bbcbf66e77bdbc1bcc928433982f501cc70a0c1caa94cc54d0f3d4

  • C:\Users\Admin\AppData\Local\Temp\3582-490\e551e2105969587b635e0186a5b3cbf25251912cff9e20945091989966e4d074.exe
    MD5

    61d35eee356fba70f4e30e6a5b7d8d6c

    SHA1

    159626a6bdbf248e45e9355a728a9bd5bb9b4acb

    SHA256

    d9e4109bb50598be423d670aa3ae602a350001bf719f6929b3f43fc4efa27088

    SHA512

    555b529b79ca710c1165aadc3bcd755e81c47d5538055c4d2402d9b72dba9c2c03126fe5b9bbcbf66e77bdbc1bcc928433982f501cc70a0c1caa94cc54d0f3d4