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Overview

overview

10

Static

static

3

1fc91b4ed4...5N.exe

windows7-x64

10

1fc91b4ed4...5N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    120s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 05:39

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General

  • Target

    1fc91b4ed4483a76906d1e645bf8edffe3b79ed0cd9b1bdcca074a45ade80065N.exe

  • Size

    84KB

  • MD5

    60e167f76f4720395a74883b4e84c2e0

  • SHA1

    65d78d96060a7b7479d6927be12fc03b127bed92

  • SHA256

    1fc91b4ed4483a76906d1e645bf8edffe3b79ed0cd9b1bdcca074a45ade80065

  • SHA512

    67458a936570ae384b2019a2258b3e52076ef3aa06e824650099317a0976f2325941ab13041dfd86c5593e16f19c5258734e341920fc539e03a57cef5b706b61

  • SSDEEP

    768:DyV+hOvoUkwzNXgfFP/8IWi3KEyUhL7b7Yqlf4JwQltjmtTBHi7Al8:DoFvp5Knv76Ezh/vYlJwAitTB3l8

Score
10/10
discoveryevasionpersistence

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • 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 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • 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.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\1fc91b4ed4483a76906d1e645bf8edffe3b79ed0cd9b1bdcca074a45ade80065N.exe
    "C:\Users\Admin\AppData\Local\Temp\1fc91b4ed4483a76906d1e645bf8edffe3b79ed0cd9b1bdcca074a45ade80065N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4276
    • C:\Users\Admin\yaiey.exe
      "C:\Users\Admin\yaiey.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
      PID:4144
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4276 -s 1512
      2⤵
      • Program crash
      PID:1392
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4276 -ip 4276
    1⤵
      PID:4756

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\yaiey.exe
      Filesize

      84KB

      MD5

      597d9e5fb5f75fb64f7a8b7c19b5d105

      SHA1

      1569afb5ea60abb48a81a7909d26bf407cdfbc44

      SHA256

      2f1cd296e943a3aa5940d974624ae9d7e8b470ec75224f2c088ec14983492302

      SHA512

      20d6abee2bdecccfdbe9a87ede56377921712e54e9e0ebb96ae8616f0d200086ecc1a213127fe8677165c3fd42f6267b62e2e84203ededd3d11b0a65d95c6244

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