Analysis

  • max time kernel
    142s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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 2 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 3 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 9 IoCs

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

  • Adds Run key to start application 2 TTPs 4 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 4 IoCs

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

  • Modifies WinLogon 2 TTPs 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 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
    • Loads dropped DLL
    • Adds Run key to start application
    • Enumerates connected drives
    • Modifies WinLogon
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2476
    • 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:2744
      • C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
        C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
        3⤵
        • Enumerates connected drives
        • Suspicious behavior: EnumeratesProcesses
        PID:2772
    • C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
      C:\Users\Admin\AppData\Local\Temp\1f313f8a0fb1d37f3d7d0b53a6e5bd70.exe
      2⤵
      • Enumerates connected drives
      • Suspicious behavior: EnumeratesProcesses
      PID:292
    • C:\Windows\SysWOW64\reg.exe
      reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
      2⤵
      • Installs/modifies Browser Helper Object
      PID:3040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\cftmon.exe

    Filesize

    152KB

    MD5

    521cfb4c1644418282cdabcd02d652f6

    SHA1

    300e31463c78caa908ccacb0bf9c45149153aa93

    SHA256

    7cb82c996e6bcd5d7195b979e5e1726a9038151e830d46dd3d2b73f0a1ca0592

    SHA512

    333405f783bca890844d8940adcbe2578a8b55b37d778d70c87977556ac2c1183d37227768f48cd5c6d098d959f112ef39be92ca7e8617fee3cf89dc9c543bd6

  • \Windows\SysWOW64\ftpdll.dll

    Filesize

    5KB

    MD5

    d807aa04480d1d149f7a4cac22984188

    SHA1

    ffd5be65fd10017e34c11cecd105ebf4aa6c0cd9

    SHA256

    eddf092d901afe128322910c3ff41a3f242d33d6b4cdf91ece327076b324ccbb

    SHA512

    875543583c20ab164f37a4fb2587d234ce0a15d649d22b0d1dae5933f0a7683db170578746ea4458c51fec26e2243c6ec00dc10db8d4289789e50d5800cf863e

  • memory/292-17-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2476-0-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2476-1-0x0000000000230000-0x0000000000256000-memory.dmp

    Filesize

    152KB

  • memory/2476-2-0x0000000000230000-0x0000000000256000-memory.dmp

    Filesize

    152KB

  • memory/2476-13-0x0000000010000000-0x000000001010B000-memory.dmp

    Filesize

    1.0MB

  • memory/2476-15-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2476-14-0x0000000010000000-0x000000001010B000-memory.dmp

    Filesize

    1.0MB

  • memory/2744-16-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB

  • memory/2744-18-0x0000000000470000-0x0000000000496000-memory.dmp

    Filesize

    152KB

  • memory/2772-19-0x0000000000400000-0x0000000000426000-memory.dmp

    Filesize

    152KB