Analysis

  • max time kernel
    149s
  • max time network
    56s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-04-2024 20:14

General

  • Target

    66f2a87d003eff09142192245e17d3b30865288bd7e15587b6f9a48edeefe945.exe

  • Size

    67KB

  • MD5

    c9b03e63edf74dac67ad7f9c50315e29

  • SHA1

    a2fe95eca8062d848f182744d757df2fd270b61f

  • SHA256

    66f2a87d003eff09142192245e17d3b30865288bd7e15587b6f9a48edeefe945

  • SHA512

    4d1db095aa3ae42dda55fd72960a93faa0b662e7b16f104e9e49735df81db0481ddd9bd204e2433138c85974ac94ff66ff0517e20ca21cc3d87efeb6fd26a49c

  • SSDEEP

    1536:/qbSe+Zk78NR3dN5nPbZoEV0JuRUFyMOaHQ1l:/3e+a+3dN5+k0JXXOeQ

Score
7/10

Malware Config

Signatures

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 64 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3576
      • C:\Users\Admin\AppData\Local\Temp\66f2a87d003eff09142192245e17d3b30865288bd7e15587b6f9a48edeefe945.exe
        "C:\Users\Admin\AppData\Local\Temp\66f2a87d003eff09142192245e17d3b30865288bd7e15587b6f9a48edeefe945.exe"
        2⤵
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2836
        • C:\Windows\SysWOW64\net.exe
          net stop "Kingsoft AntiVirus Service"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2456
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
            4⤵
              PID:2528
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a3875.bat
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1408
            • C:\Users\Admin\AppData\Local\Temp\66f2a87d003eff09142192245e17d3b30865288bd7e15587b6f9a48edeefe945.exe
              "C:\Users\Admin\AppData\Local\Temp\66f2a87d003eff09142192245e17d3b30865288bd7e15587b6f9a48edeefe945.exe"
              4⤵
              • Executes dropped EXE
              PID:1428
          • C:\Windows\Logo1_.exe
            C:\Windows\Logo1_.exe
            3⤵
            • Drops startup file
            • 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:3224
            • C:\Windows\SysWOW64\net.exe
              net stop "Kingsoft AntiVirus Service"
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:2944
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
                5⤵
                  PID:2272
              • C:\Windows\SysWOW64\net.exe
                net stop "Kingsoft AntiVirus Service"
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:4076
                • C:\Windows\SysWOW64\net1.exe
                  C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
                  5⤵
                    PID:3616

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files\WriteRename.exe

            Filesize

            615KB

            MD5

            0a3fb0b64977972709620f2db10020cb

            SHA1

            a88e7f4b4da692b38f203bd09fdb460b23a26429

            SHA256

            04333c31132fbd7e547b707f40a8f22dad282e13fb381ba8bf6f0cdf43af4e21

            SHA512

            88e163f19dd1460248eb4be0ddcf3546b5fb1f309bd526de4c07967bff47b33f9047f66e6dead343b283292642e53aa82b31b38f5650cd7a83cecaddc9157d2c

          • C:\ProgramData\Package Cache\{63880b41-04fc-4f9b-92c4-4455c255eb8c}\windowsdesktop-runtime-8.0.2-win-x64.exe

            Filesize

            643KB

            MD5

            b06c23c388c6c6a3219fdaf5efaabccf

            SHA1

            ada13c3c4449d222de774ebd037078ba31d33cd2

            SHA256

            8efeb8be3a4ae59e4106e6c1d9e122d8ecb84b71cf01796f27d94ecfe80e0809

            SHA512

            aefc2fbbf660ee465ac7f174ab8f3de242c352d473a02ee96214d29a5e854e88c7ad842685bdb81698c8d51e0b597d7379c3a039e704839be748fe96a68c23b9

          • C:\Users\Admin\AppData\Local\Temp\$$a3875.bat

            Filesize

            722B

            MD5

            adcef7c882b586bdc06e1c0939e6983c

            SHA1

            38c6f5e66adc11fa49201599534f09fbab2e6263

            SHA256

            ccbd4f3a3059879fd541e86c6d9c51eab7d88731bfcb41bdb09b4e6a57716691

            SHA512

            19d24e279b373e2acd72f7de4a7df04fa5497d309b45553516ed2bee0562299e2c55ffea738b0c467c400c2762559d83cd9f954e56923a4591c6000630878205

          • C:\Users\Admin\AppData\Local\Temp\66f2a87d003eff09142192245e17d3b30865288bd7e15587b6f9a48edeefe945.exe.exe

            Filesize

            33KB

            MD5

            69b16c7b7746ba5c642fc05b3561fc73

            SHA1

            83d80d668dca76b899e1bf662ddee0e0c18ac791

            SHA256

            0deceb6b1b7a2dd1f13133ac7328ff420dad4610cee1fa7466e8e0f6baa39116

            SHA512

            6b8eebcfe5b04141640047fe468371ad02bb115ee9ef00260c0b33cfd56b142c2e01b3b1c6f07281aa57b1f3b9fdb1f1082fe5620f88a57b92d8f547267ef154

          • C:\Windows\Logo1_.exe

            Filesize

            33KB

            MD5

            3659e75ad8a2bdeef5f1d74aae41c2af

            SHA1

            95b2fa7bc2afbc1f412fc4285dbb6a15cc658a8a

            SHA256

            dbb4fdb10597cfb189203f72e75a2f2769a6960ed1acc1baa901742a344ae52d

            SHA512

            f19bbad48af80437f083d21cf89839bee9d30d50162df60a0d7c8205b646739332e55371f5d6c005f69681e41f00df936942c06f94f1a38c25084e438cac61e2

          • F:\$RECYCLE.BIN\S-1-5-21-17203666-93769886-2545153620-1000\_desktop.ini

            Filesize

            9B

            MD5

            e7957b9f3d9556c996418169821a7993

            SHA1

            b7028de0f91d2e50a8d5f6d23613331a2784a142

            SHA256

            71a21a13d7822776d52d9a6146651dc9155db9f0bfbd978acf43d12dea2a8539

            SHA512

            72bc8552047095449fa4c3c21300183acfc7b33e6ab69c11435542e2862cb9e896bbfdedaeb97ec6edac8ed68220507a302d1ed2217624c97f6e9a83c0d3a285

          • memory/2836-0-0x0000000000400000-0x000000000043F000-memory.dmp

            Filesize

            252KB

          • memory/2836-10-0x0000000000400000-0x000000000043F000-memory.dmp

            Filesize

            252KB

          • memory/3224-11-0x0000000000400000-0x000000000043F000-memory.dmp

            Filesize

            252KB

          • memory/3224-18-0x0000000000400000-0x000000000043F000-memory.dmp

            Filesize

            252KB

          • memory/3224-5225-0x0000000000400000-0x000000000043F000-memory.dmp

            Filesize

            252KB

          • memory/3224-8780-0x0000000000400000-0x000000000043F000-memory.dmp

            Filesize

            252KB