Analysis

  • max time kernel
    149s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    13/06/2024, 04:36

General

  • Target
    a02420dab560800c6d86285ce39f1da859ac2f76e3ddd19fd0aab82f6919ab90.exe
  • Size 275KB
  • Sample240613-e8kacsxhpl
  • SHA256 a02420dab560800c6d86285ce39f1da859ac2f76e3ddd19fd0aab82f6919ab90
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1348
      • C:\Users\Admin\AppData\Local\Temp\a02420dab560800c6d86285ce39f1da859ac2f76e3ddd19fd0aab82f6919ab90.exe
        "C:\Users\Admin\AppData\Local\Temp\a02420dab560800c6d86285ce39f1da859ac2f76e3ddd19fd0aab82f6919ab90.exe"
        2⤵
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:1540
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\$$a7AE.bat
          3⤵
          • Deletes itself
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:2196
          • C:\Users\Admin\AppData\Local\Temp\a02420dab560800c6d86285ce39f1da859ac2f76e3ddd19fd0aab82f6919ab90.exe
            "C:\Users\Admin\AppData\Local\Temp\a02420dab560800c6d86285ce39f1da859ac2f76e3ddd19fd0aab82f6919ab90.exe"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:2600
            • C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
              "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              PID:2832
        • 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:2208
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1876
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              5⤵
                PID:2664

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            GoogleUpdateCore.exe

            • Path C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateCore.exe
            • Size 251KB
            • SHA256 ac040dc7f1ccb3b1a1a0ba7f57c5f1787081c64b56d3af79fdfc24aa69759a9f
            • MD5 SHA1 SHA512 SSDEEP

            vcredist_x64.exe

            • Path C:\ProgramData\Package Cache\{ca67548a-5ebe-413a-b50c-4b9ceb6d66c6}\vcredist_x64.exe
            • Size 471KB
            • SHA256 5ec41e0b29c00dd288859df2f583b0e771c11c01d8fd519fe2bd8921b3bed4f3
            • MD5 SHA1 SHA512 SSDEEP

            $$a7AE.bat

            • Path C:\Users\Admin\AppData\Local\Temp\$$a7AE.bat
            • Size 721B
            • SHA256 014d8485936d7c364c1554786f0e1dc478fc69445f5d874b193e56e2ba0a6549
            • MD5 SHA1 SHA512

            a02420dab560800c6d86285ce39f1da859ac2f76e3ddd19fd0aab82f6919ab90.exe.exe

            • Path C:\Users\Admin\AppData\Local\Temp\a02420dab560800c6d86285ce39f1da859ac2f76e3ddd19fd0aab82f6919ab90.exe.exe
            • Size 248KB
            • SHA256 4cb64e345f2ccf5bb6b3493dc55b11048ef249baed3645b09033758c652734af
            • MD5 SHA1 SHA512 SSDEEP

            nsProcess.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsy8F7.tmp\nsProcess.dll
            • Size 4KB
            • SHA256 30c6c3dd3cc7fcea6e6081ce821adc7b2888542dae30bf00e881c0a105eb4d11
            • MD5 SHA1 SHA512 SSDEEP

            Logo1_.exe

            • Path C:\Windows\Logo1_.exe
            • Size 26KB
            • SHA256 44dd551c7c131158282194d127971c71fa4e16b60b526f3886427bdd1b52eae9
            • MD5 SHA1 SHA512 SSDEEP

            _desktop.ini

            • Path F:\$RECYCLE.BIN\S-1-5-21-3627615824-4061627003-3019543961-1000\_desktop.ini
            • Size 9B
            • SHA256 47a22297ce31d17b0f37251ce63cf2eb146700451caab6dd0aa710d2526c8e42
            • MD5 SHA1 SHA512

            StdUtils.dll

            • Path \Users\Admin\AppData\Local\Temp\nsy8F7.tmp\StdUtils.dll
            • Size 100KB
            • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
            • MD5 SHA1 SHA512 SSDEEP

            System.dll

            • Path \Users\Admin\AppData\Local\Temp\nsy8F7.tmp\System.dll
            • Size 12KB
            • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
            • MD5 SHA1 SHA512 SSDEEP

            WinShell.dll

            • Path \Users\Admin\AppData\Local\Temp\nsy8F7.tmp\WinShell.dll
            • Size 3KB
            • SHA256 9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6
            • MD5 SHA1 SHA512

            memory/1348-41-0x0000000002580000-0x0000000002581000-memory.dmp

            memory/1540-0-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/1540-17-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-135-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-83-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-129-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-77-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-930-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-1888-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-18-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-2943-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-3348-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/2208-70-0x0000000000400000-0x0000000000434000-memory.dmp