Analysis

  • max time kernel
    156s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/10/2022, 03:15

General

  • Target

    ea16924b946f1fc17e3e87f67d5eb631b795ea6aeee5af5ba838fd7293beefd7.exe

  • Size

    292KB

  • MD5

    4ff2266e19dbf37f97093c3147c51e40

  • SHA1

    421159800e4f4cae83eee1fbc2433bab734ba988

  • SHA256

    ea16924b946f1fc17e3e87f67d5eb631b795ea6aeee5af5ba838fd7293beefd7

  • SHA512

    8013cdfa86dbd6ac53649fd70fd719078c6ba4ca5794aadc57adb4fb2d3fd3f77d7ffa8a79b427b60192f9483051d0402a98a73251e4200b2d6f1ffdc521c13c

  • SSDEEP

    3072:in1Od4X9di6+EOBq7CFLuupaFBzxk7c7awSZohDnjV2S8NmMx3WarRDSAzsUiztU:izi6iLuupszxk7USZoDnp23xmg9wUutU

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 54 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ea16924b946f1fc17e3e87f67d5eb631b795ea6aeee5af5ba838fd7293beefd7.exe
    "C:\Users\Admin\AppData\Local\Temp\ea16924b946f1fc17e3e87f67d5eb631b795ea6aeee5af5ba838fd7293beefd7.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5080
    • C:\Users\Admin\yhniud.exe
      "C:\Users\Admin\yhniud.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:208

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\yhniud.exe

    Filesize

    292KB

    MD5

    ba7ae4a2632ace0a5b0e068a7339edcc

    SHA1

    c07e8b084d4368be867621b91cb09c48d4c739c3

    SHA256

    784fe1dfef0a06b176a6e2df2bd6a0e82d56c2c5c577eec39fb4c84d4f62d665

    SHA512

    8b2aa4c81b0433f4e478fd458806caba976f2975380186c2373fc0861cde283150acb0ad158118781f6c1b078bb889d137bf31725dfdd6c147d90ae8c343985b

  • C:\Users\Admin\yhniud.exe

    Filesize

    292KB

    MD5

    ba7ae4a2632ace0a5b0e068a7339edcc

    SHA1

    c07e8b084d4368be867621b91cb09c48d4c739c3

    SHA256

    784fe1dfef0a06b176a6e2df2bd6a0e82d56c2c5c577eec39fb4c84d4f62d665

    SHA512

    8b2aa4c81b0433f4e478fd458806caba976f2975380186c2373fc0861cde283150acb0ad158118781f6c1b078bb889d137bf31725dfdd6c147d90ae8c343985b