Analysis

  • max time kernel
    45s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2023 12:41

General

  • Target

    1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe

  • Size

    145KB

  • MD5

    1f313f8a0fb1d37f3d7d0b53a6e5bd70

  • SHA1

    64c89ea4b19bdc85f5f0c9b49430635c7a077d0a

  • SHA256

    34f86c5d8ad41ae37d6e843f884a8261ad2c55534f5635ddf368f65323b3dbcf

  • SHA512

    db0a50953b83b88f1594096ce7cad35d6bde8a562708eb016cae091eb931af614dcd9d363618223bbeadb1c929ccdf10733470502d38516fdcc1f6292e61546e

  • SSDEEP

    384:beRq2+Te7vMw5Qm/w96XsIDnN7oE8INlRe0h9kVWJVXiM2+3iY:KRKyMw5QKXsYcYlhbWWJIsi

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Drops file in Drivers directory 3 IoCs
  • Sets service image path in registry 2 TTPs 2 IoCs
  • ACProtect 1.3x - 1.4x DLL software 3 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 2 IoCs
  • UPX packed file 11 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 8 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Modifies WinLogon 2 TTPs 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
    "C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Drivers directory
    • Sets service image path in registry
    • Adds Run key to start application
    • Enumerates connected drives
    • Modifies WinLogon
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4500
    • C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
      C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
      2⤵
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4456
      • C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
        C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
        3⤵
        • Enumerates connected drives
        PID:1472
    • C:\Windows\SysWOW64\reg.exe
      reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
      2⤵
      • Installs/modifies Browser Helper Object
      PID:4008
    • C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
      C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
      2⤵
      • Drops file in Drivers directory
      • Sets service image path in registry
      • Loads dropped DLL
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1776
      • C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
        C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
        3⤵
        • Enumerates connected drives
        PID:636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\ftpdll.dll

    Filesize

    5KB

    MD5

    d807aa04480d1d149f7a4cac22984188

    SHA1

    ffd5be65fd10017e34c11cecd105ebf4aa6c0cd9

    SHA256

    eddf092d901afe128322910c3ff41a3f242d33d6b4cdf91ece327076b324ccbb

    SHA512

    875543583c20ab164f37a4fb2587d234ce0a15d649d22b0d1dae5933f0a7683db170578746ea4458c51fec26e2243c6ec00dc10db8d4289789e50d5800cf863e

  • memory/636-35-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1472-34-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/1776-29-0x0000000010000000-0x000000001010B000-memory.dmp

    Filesize

    1.0MB

  • memory/1776-32-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4456-1-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4456-31-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4500-0-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/4500-17-0x0000000010000000-0x000000001010B000-memory.dmp

    Filesize

    1.0MB

  • memory/4500-18-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB