Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    16-04-2024 04:11

General

  • Target

    99f2db0db26146f097c0c811ebcc275dc0682642cc75abe86f8fc6455b9aa36f.exe

  • Size

    573KB

  • MD5

    e1eae81482621cdac8824ba25efae29d

  • SHA1

    52689e758a44b270421e4cc4b2793828a1780fb7

  • SHA256

    99f2db0db26146f097c0c811ebcc275dc0682642cc75abe86f8fc6455b9aa36f

  • SHA512

    fe747b72628a8e13914b96b4bc2cba608c16661ec71e23b06d18b48af438872e5753f9fce65113d4da7cb73beabb86ce0aa0cf28472d151365b1cbd20aacd789

  • SSDEEP

    6144:ruJpE7cV3iwbAFRWAbd4nf0H05yqE6Hl0ChW0+ksllAXBu0lWGWUJJQ4t0BHQQfu:t7a3iwbihym2g7XO3LWUQfh4Co

Score
7/10

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • 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.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1392
      • C:\Users\Admin\AppData\Local\Temp\99f2db0db26146f097c0c811ebcc275dc0682642cc75abe86f8fc6455b9aa36f.exe
        "C:\Users\Admin\AppData\Local\Temp\99f2db0db26146f097c0c811ebcc275dc0682642cc75abe86f8fc6455b9aa36f.exe"
        2⤵
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:1252
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Admin\AppData\Local\Temp\$$a72DF.bat
          3⤵
          • Deletes itself
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:2060
          • C:\Users\Admin\AppData\Local\Temp\99f2db0db26146f097c0c811ebcc275dc0682642cc75abe86f8fc6455b9aa36f.exe
            "C:\Users\Admin\AppData\Local\Temp\99f2db0db26146f097c0c811ebcc275dc0682642cc75abe86f8fc6455b9aa36f.exe"
            4⤵
            • Executes dropped EXE
            PID:2524
        • 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:1972
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2860
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              5⤵
                PID:2584

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\Google\Update\1.3.36.151\GoogleUpdateCore.exe

        Filesize

        254KB

        MD5

        a036bc46b8f17b2af3637b788423d6b3

        SHA1

        f1ffdfb2ecf8ef1bfddcf0a2a42ac62c234bbf87

        SHA256

        bc659808d3143ea5818d3939662cc861ebc1b7d58c3dc08705017af49a700b1e

        SHA512

        b72703148c657255dc4f10b8b101f19385f0b487a503408b79d91bd1ace979e8374c938bf7d5bd590b1ef277b02837701252792b8b92917640591f27199aefe6

      • C:\Users\Admin\AppData\Local\Temp\$$a72DF.bat

        Filesize

        722B

        MD5

        50a111bfb5dc6e178b8177fa9ac54ba9

        SHA1

        ddfcbb793c0ff7594005e8e3d297ebc6512c3ddb

        SHA256

        ce07112ca19b4611ec3b1ef5f1871d37b934e9681a52dc712d48bcc824337293

        SHA512

        bda330c3d3ab53df6861fca6004232a36d215f2ddb5d0ae8b7c71932e7f2517d8967281b198f33f34a79f6f0176fe792ac3cdb02e4fe6a5511eb944c26ef02ec

      • C:\Users\Admin\AppData\Local\Temp\99f2db0db26146f097c0c811ebcc275dc0682642cc75abe86f8fc6455b9aa36f.exe.exe

        Filesize

        544KB

        MD5

        9a1dd1d96481d61934dcc2d568971d06

        SHA1

        f136ef9bf8bd2fc753292fb5b7cf173a22675fb3

        SHA256

        8cebb25e240db3b6986fcaed6bc0b900fa09dad763a56fb71273529266c5c525

        SHA512

        7ac1581f8a29e778ba1a1220670796c47fa5b838417f8f635e2cb1998a01515cff3ee57045dacb78a8ec70d43754b970743aba600379fe6d9481958d32d8a5aa

      • C:\Windows\Logo1_.exe

        Filesize

        29KB

        MD5

        3779b7c17bd509ec3a5074fe2d4b29d1

        SHA1

        03ad48fea32d38ae5b61e125aece75b5eb4e564d

        SHA256

        6e33fc0dcbafb1c8b0f74ba3d95f64c1240c4a6ebb3e93888c6324b81a722453

        SHA512

        28a8fa23da21f7a77aaecb5dcb1ad0cce08d1118ef8644276ff258c583d0ab102ec861f1fe623b856e36e65d04db3dfb7db3973b2e1b56eff136b965da26aead

      • F:\$RECYCLE.BIN\S-1-5-21-330940541-141609230-1670313778-1000\_desktop.ini

        Filesize

        9B

        MD5

        02ced53ce3f5b175c3bbec378047e7a7

        SHA1

        dafdf07efa697ec99b3d7b9f7512439a52ea618d

        SHA256

        485bb2341321a2837fd015a36963ea549c7c6f40985e165fd56c8a1e89b3f331

        SHA512

        669dde3ea8628704d40681a7f8974cf52985385c92a61a540c97c18c13eb4d451207ae171b2a56cd061cadbc90e672a84eb55111b1f5016846918d73fb075c99

      • memory/1252-16-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1252-0-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1252-17-0x0000000000290000-0x00000000002C6000-memory.dmp

        Filesize

        216KB

      • memory/1252-12-0x0000000000290000-0x00000000002C6000-memory.dmp

        Filesize

        216KB

      • memory/1392-30-0x00000000026F0000-0x00000000026F1000-memory.dmp

        Filesize

        4KB

      • memory/1972-22-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1972-39-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1972-45-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1972-91-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1972-97-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1972-186-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1972-1850-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1972-32-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB

      • memory/1972-3310-0x0000000000400000-0x0000000000436000-memory.dmp

        Filesize

        216KB