Analysis

  • max time kernel
    158s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/01/2024, 03:34

General

  • Target
    c4ecab08da9077dd0905bb56317d6775146cf109520e52668a6b20d385e5eaa5.exe
  • Size 4.8MB
  • Sample240114-d4t4bscdc6
  • SHA256 c4ecab08da9077dd0905bb56317d6775146cf109520e52668a6b20d385e5eaa5
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3500
      • C:\Users\Admin\AppData\Local\Temp\c4ecab08da9077dd0905bb56317d6775146cf109520e52668a6b20d385e5eaa5.exe
        "C:\Users\Admin\AppData\Local\Temp\c4ecab08da9077dd0905bb56317d6775146cf109520e52668a6b20d385e5eaa5.exe"
        2⤵
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:3304
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$aCBEB.bat
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4584
          • C:\Users\Admin\AppData\Local\Temp\c4ecab08da9077dd0905bb56317d6775146cf109520e52668a6b20d385e5eaa5.exe
            "C:\Users\Admin\AppData\Local\Temp\c4ecab08da9077dd0905bb56317d6775146cf109520e52668a6b20d385e5eaa5.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Writes to the Master Boot Record (MBR)
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:4656
        • C:\Windows\Logo1_.exe
          C:\Windows\Logo1_.exe
          3⤵
          • Executes dropped EXE
          • Enumerates connected drives
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4828
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4540
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              5⤵
                PID:3020

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            7z.exe

            • Path C:\Program Files\7-Zip\7z.exe
            • Size 570KB
            • SHA256 940a2ca71804f62863b6e4b73767e46ee458894175ebae8ecba63f386b2eb50a
            • MD5 SHA1 SHA512 SSDEEP

            setup.ini

            • Path C:\Users\Admin\AppData\Local\Temp\[email protected]\setup.ini
            • Size 8KB
            • SHA256 21a77b923cd0027ccbf59a355c175f7a100190b550bb82c070f9dbbaad18337e
            • MD5 SHA1 SHA512 SSDEEP

            $$aCBEB.bat

            • Path C:\Users\Admin\AppData\Local\Temp\$$aCBEB.bat
            • Size 722B
            • SHA256 a1084f46e02bd5578a76d62b318f5e3f203e4ad2ac9df83166debdbd65a663b8
            • MD5 SHA1 SHA512

            360D7C2.tmp360net.dll

            • Path C:\Users\Admin\AppData\Local\Temp\360D7C2.tmp360net.dll
            • Size 480KB
            • SHA256 214a5e9aab33148866db82ab51c5bcce9e4240794c2c2850fa0f7b3bc3aa34e6
            • MD5 SHA1 SHA512 SSDEEP

            c4ecab08da9077dd0905bb56317d6775146cf109520e52668a6b20d385e5eaa5.exe.exe

            • Path C:\Users\Admin\AppData\Local\Temp\c4ecab08da9077dd0905bb56317d6775146cf109520e52668a6b20d385e5eaa5.exe.exe
            • Size 4.7MB
            • SHA256 480dde4806d488da08f6e39e0673fb525d68431a1f32a34e276c10f3851c7cd9
            • MD5 SHA1 SHA512 SSDEEP

            360Common_Inst.log

            • Path C:\Users\Admin\AppData\Roaming\360Safe\360Common_Inst.log
            • Size 4KB
            • SHA256 0bf7b5d0fcf4a7b7cd54a26d6813f7124613fb251d4ea3139dce1eed0fb596c3
            • MD5 SHA1 SHA512 SSDEEP

            Logo1_.exe

            • Path C:\Windows\Logo1_.exe
            • Size 26KB
            • SHA256 8fb893c58b334942b814e4579d75c36f34c00fdf3a60471cfaa2493192ce84a9
            • MD5 SHA1 SHA512 SSDEEP

            _desktop.ini

            • Path F:\$RECYCLE.BIN\S-1-5-21-3073191680-435865314-2862784915-1000\_desktop.ini
            • Size 9B
            • SHA256 7ef40a98b77a81085c0a426908276cbaead1573daf25f79344d7b4502d953774
            • MD5 SHA1 SHA512

            memory/3304-10-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/3304-0-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4656-330-0x00000000037E0000-0x00000000037E1000-memory.dmp

            memory/4656-27-0x00000000037E0000-0x00000000037E1000-memory.dmp

            memory/4828-322-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-329-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-336-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-341-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-345-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-9-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-375-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-621-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-1254-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-1309-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/4828-1310-0x0000000000400000-0x0000000000434000-memory.dmp