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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2024, 18:13

General

  • Target

    3dd546ce222d29875feadcc0c32345e5b919d1911b7e563b689e8c9d53f01446N.exe

  • Size

    180KB

  • MD5

    76d46fe1fb45e400704b83dc1814d800

  • SHA1

    d8bb4bb086fb0be7ee76163d351b168687c6f180

  • SHA256

    3dd546ce222d29875feadcc0c32345e5b919d1911b7e563b689e8c9d53f01446

  • SHA512

    7b25b20d51a079cbbd8f7326ed46b6ecb8927204db42ad4f63448888ad4f8daea3055c3987a26e7b75c0533cec7ca7ea82ce376c005e144bb4d2ac16848653ec

  • SSDEEP

    1536:XmXPldcxKc8NMgeGU4AeGL0TxpKwmf8y0IpWur+2RPFYSUxBphF0QSHy:2ffcSg4dgxkcrhRVUHF0

Malware Config

Signatures

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

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 50 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\3dd546ce222d29875feadcc0c32345e5b919d1911b7e563b689e8c9d53f01446N.exe
    "C:\Users\Admin\AppData\Local\Temp\3dd546ce222d29875feadcc0c32345e5b919d1911b7e563b689e8c9d53f01446N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Users\Admin\tiasue.exe
      "C:\Users\Admin\tiasue.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1300

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\tiasue.exe

    Filesize

    180KB

    MD5

    1e95d9d8d43cdbc7fa34b4de89a04ac0

    SHA1

    06b7f7a6111ee9abb0f438f6d3e8e249bde5287a

    SHA256

    6368abde5e82d26db1463b764a7eeb87f85d26237a59c3bb87d474faed7936a3

    SHA512

    cfb435c140550825f5bcf12824a8ed642f5fb9478313396f6c95505d348c24a07d59572c1712b8d83acf6d2a019708e1b2a6a5fb6ccab524a2ea689c7c39504f