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Analysis

  • max time kernel
    94s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/09/2024, 09:24

General

  • Target

    5f1b878a21b60e4ac81f3a54c9539bb0N.exe

  • Size

    1.0MB

  • MD5

    5f1b878a21b60e4ac81f3a54c9539bb0

  • SHA1

    dbfab1552106e112475009c708d4c06efa7bab06

  • SHA256

    fb5378e01f46ff1a9b3a0322451552918bef0c3a7f2a1fc82f1a3d783753dbcd

  • SHA512

    fe8443f8aa389dc30947b8cff1fc3df161a58325ecfdc708226e63724c38eb6d8b5f608f31626bd59f9e73c27921d3b7255fe9135bea83653a470b379d760eef

  • SSDEEP

    24576:4CuQ7k91hxia8yBIwcG4RtegeohjT6S71OUnSAx:puQ7k91hxia8E93eZD17rx

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5f1b878a21b60e4ac81f3a54c9539bb0N.exe
    "C:\Users\Admin\AppData\Local\Temp\5f1b878a21b60e4ac81f3a54c9539bb0N.exe"
    1⤵
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3648
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3508
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:592
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a84FF.bat
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1116
      • C:\Users\Admin\AppData\Local\Temp\5f1b878a21b60e4ac81f3a54c9539bb0N.exe
        "C:\Users\Admin\AppData\Local\Temp\5f1b878a21b60e4ac81f3a54c9539bb0N.exe"
        3⤵
        • Executes dropped EXE
        PID:4336
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4336 -s 180
          4⤵
          • Program crash
          PID:2240
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4336 -ip 4336
    1⤵
      PID:3620

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\$$a84FF.bat

      Filesize

      536B

      MD5

      00edd85c874f67dea75e16f31025e1a8

      SHA1

      b7674872b43459c4e59923d0532c76f9eeb26b9e

      SHA256

      46bee7e4ba08550773fcc089e78f27a774f135475a84890491bec791ac248d36

      SHA512

      3204f5f0ccaa26e75ebf2ac836e7281815c3c5eddeb4e4f1cba5e517039680bbe74afd1675c9ee2ff68a137643ea9b2d97d6e63160c8b50038a51fe4fab4163d

    • C:\Users\Admin\AppData\Local\Temp\5f1b878a21b60e4ac81f3a54c9539bb0N.exe.exe

      Filesize

      1004KB

      MD5

      148064f3f1e91ecd6561984925d47f00

      SHA1

      0d0fd99b96fb0261227394846f18995820e720b4

      SHA256

      01b6ee8d51719143cea2b6bede99299dac088b224fd363eea28178918fa85a6b

      SHA512

      d5b0acb091453c95b67fd01e21cfc1a2bfe2900ee729b60139f41e2126a79a33781e4db824ef2082e014edfae81feadebb831341879fed110f216317c1716c1f

    • memory/3648-0-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/3648-1-0x00000000001E0000-0x0000000000200000-memory.dmp

      Filesize

      128KB

    • memory/3648-9-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/4336-13-0x0000000000400000-0x0000000000515000-memory.dmp

      Filesize

      1.1MB