Overview

overview

10

Static

static

3

1f4b313fd2...67.exe

windows7-x64

10

1f4b313fd2...67.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    115s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/11/2023, 19:00

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General

  • Target

    1f4b313fd275795b932c52c6869f1b311c8392c958dded3de094968a454c4567.exe

  • Size

    25.4MB

  • MD5

    0f2e90e6eda60de9fb5bf4c808df3156

  • SHA1

    591f128d268b558afa9757a95126c09a77fb1da3

  • SHA256

    1f4b313fd275795b932c52c6869f1b311c8392c958dded3de094968a454c4567

  • SHA512

    43e9c68db6287f3cb1d75e8d91b525902b84f9e4d71a35b8a52fc83d37a091d5bce8eff18b6ffb7311fd2d00f290f186e1316bdc2f4f0db5da846bd9e9bea39e

  • SSDEEP

    6144:q3Be8ySm8hQAAIfFrRXuEE+0l97mKwKdwHV+86JQPDHDdx/Qtqa:P/zkFF+EExZmKbdQV+PJQPDHvd

Score
10/10
evasionpersistencetrojan

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
    persistence
  • UAC bypass 3 TTPs 12 IoCs
    evasiontrojan
  • Adds policy Run key to start application 2 TTPs 27 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    evasion
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
    evasiontrojan
  • Looks up external IP address via web service 5 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • System policy modification 1 TTPs 39 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f4b313fd275795b932c52c6869f1b311c8392c958dded3de094968a454c4567.exe
    "C:\Users\Admin\AppData\Local\Temp\1f4b313fd275795b932c52c6869f1b311c8392c958dded3de094968a454c4567.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4660
    • C:\Users\Admin\AppData\Local\Temp\ydgqq.exe
      "C:\Users\Admin\AppData\Local\Temp\ydgqq.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:1228
    • C:\Users\Admin\AppData\Local\Temp\ydgqq.exe
      "C:\Users\Admin\AppData\Local\Temp\ydgqq.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Modifies registry class
      • System policy modification
      PID:2264
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4064

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\ilmusyyiicdfyxrczhkltrxxh.bce
      Filesize

      272B

      MD5

      5f81611bd9bbd7350ebeed98ca4e6d85

      SHA1

      1b526f335ecd033b9656e85e66f99e3337d8bc76

      SHA256

      93ad6c024f1b47d5b85d06a8662e5e840ce34d25fc0463a8b53c63b54c5339ef

      SHA512

      550686af6b84e34042c6a9e9b2c4c95be6b65322890a649efcaa008b49060617b338c9c4ffcfbb4ea351cf46fb427d55837c0ecece9852dde408b3e5e7c60127

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    • C:\Program Files (x86)\ilmusyyiicdfyxrczhkltrxxh.bce
      Filesize

      272B

      MD5

      e95b1090b2547f933e74f2b0558bb92b

      SHA1

      c459b6ad6604b25309e4f757fc829fa2f0b58ea7

      SHA256

      243587b407c7db7422e323619e2a556a1f80a527b8ff2f90b6fb22614657c04d

      SHA512

      ae13798bdd2e32fb980687cec248badd380b68f85843e1d416697791818365a72b0d1f8976f00ad7bffe8e68e48c72a08e5fe5d2c7ef7c63b260e0acbe36353c

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    • C:\Program Files (x86)\ilmusyyiicdfyxrczhkltrxxh.bce
      Filesize

      272B

      MD5

      ae4a06e5674f456a6bf5df1cf1ac1c96

      SHA1

      d12c5c6c010d5e6aa921512685616078dffaa97a

      SHA256

      62b695f691c1a35d682ae80227b7055a916182908217983b198a94baa5f6aeb6

      SHA512

      777a355e858e6bb4a7c5d3d4ae13e614503f3f33e7cf53e566036d149b947f946ebac0a6f649fba241c3bc52931cd70a1ff4ebcead06af429d103b37e4cb9a1d

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    • C:\Program Files (x86)\ilmusyyiicdfyxrczhkltrxxh.bce
      Filesize

      272B

      MD5

      542ae831cbed7e1fbf74a4d6a5f7dcb3

      SHA1

      a96ac78e4ed181b11d207073d6a9a00b7346528b

      SHA256

      66ea0d4ef308c6b609ecd2e06d4c123cf6a29f7ab9de7d46f65b874dbcf5fdb5

      SHA512

      771ac693c10dc108264a5199da19fe8f984b2c5c10068d9c178f8d56a155335383058c7d92ad66ad12a46e6b0f0a7ea33a476b7b2ddfe16b6d3e11523d33f3ba

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    • C:\Program Files (x86)\ilmusyyiicdfyxrczhkltrxxh.bce
      Filesize

      272B

      MD5

      8fde55ea2cda8bd9dfa1872efbae361c

      SHA1

      4f0affa5b13ef904fe927c06ab2eea19f143dd3f

      SHA256

      706b287cc883a1e2360f6305f38dea09c429cb52b8eed6c4c9701234486ec6b9

      SHA512

      e462b3e4014ca23eb38a59eeca9592fc238085da662ea9d20a6bee195b975d270ecbe78604f08ecec4139f49c7ec178a611c08a77dfd6dbae9cc92b60502435a

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    • C:\Users\Admin\AppData\Local\Temp\ydgqq.exe
      Filesize

      29.1MB

      MD5

      e21fa1aed42a3130afd2bdd11bdc4cfe

      SHA1

      67adecfd86b159866e18a4a6aec63c6ada668ac1

      SHA256

      e5f7c5cbb2757186cb5a7343f076d55655f28d7e89184ac3ca0f407375a3255f

      SHA512

      e931a6b145a6881eb68cbbdb46bd13726f540238c16cac81187131a9b61401f37291471c0382ae1570e5a4d570b5b1fc8ce76eddb13e591db6e6dfabd9475ef3

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    • C:\Users\Admin\AppData\Local\Temp\ydgqq.exe
      Filesize

      29.1MB

      MD5

      e21fa1aed42a3130afd2bdd11bdc4cfe

      SHA1

      67adecfd86b159866e18a4a6aec63c6ada668ac1

      SHA256

      e5f7c5cbb2757186cb5a7343f076d55655f28d7e89184ac3ca0f407375a3255f

      SHA512

      e931a6b145a6881eb68cbbdb46bd13726f540238c16cac81187131a9b61401f37291471c0382ae1570e5a4d570b5b1fc8ce76eddb13e591db6e6dfabd9475ef3

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\ydgqq.exe
      Filesize

      29.1MB

      MD5

      e21fa1aed42a3130afd2bdd11bdc4cfe

      SHA1

      67adecfd86b159866e18a4a6aec63c6ada668ac1

      SHA256

      e5f7c5cbb2757186cb5a7343f076d55655f28d7e89184ac3ca0f407375a3255f

      SHA512

      e931a6b145a6881eb68cbbdb46bd13726f540238c16cac81187131a9b61401f37291471c0382ae1570e5a4d570b5b1fc8ce76eddb13e591db6e6dfabd9475ef3

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\ydgqq.exe
      Filesize

      29.1MB

      MD5

      e21fa1aed42a3130afd2bdd11bdc4cfe

      SHA1

      67adecfd86b159866e18a4a6aec63c6ada668ac1

      SHA256

      e5f7c5cbb2757186cb5a7343f076d55655f28d7e89184ac3ca0f407375a3255f

      SHA512

      e931a6b145a6881eb68cbbdb46bd13726f540238c16cac81187131a9b61401f37291471c0382ae1570e5a4d570b5b1fc8ce76eddb13e591db6e6dfabd9475ef3

      Download Submit

    • C:\Users\Admin\AppData\Local\ilmusyyiicdfyxrczhkltrxxh.bce
      Filesize

      272B

      MD5

      e272b06029e2454beb4aaf6c37fbc47f

      SHA1

      af3766c4bd057c5217b0d8d167204da39b42a6ca

      SHA256

      291c21aa6041e2eb55fc326594e764478c241e4ec704ae91d56aff1684d2f47e

      SHA512

      dbd2c1f0fc7740636a8e714837c82722d0e4cd1bfbbc9dc309022d2839f8e5ae3c768d26984ed1ecc688455a898d9df93e5f5583dde371f6abcf198dbd400c45

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    • C:\Users\Admin\AppData\Local\nbngpgrmxcobfpuqyrfrktkvqbgsfjtyucvj.oxo
      Filesize

      3KB

      MD5

      849d452cd692ceeb5d4c4414aee96210

      SHA1

      ed39cf075b8a6b89c4eef76d36f44fbf03becfa6

      SHA256

      e0a4aa68101e32327087fb6f0d2c93144e0e75bd5063f7f33ab4d2e4daf17031

      SHA512

      b9d1b1a037c26b3433ebe882ba09f91ba890fd71c57bb2e80c5fde99d4543840e283cee83348a1f77652a9dc23745f04c84c8c3d050cfdd6d666d99c76ae6a30

      Download Submit