Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    windows10-1703_x64
  • resource
    win10-20231023-en
  • resource tags

    arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system
  • submitted
    04/11/2023, 13:20

General

  • Target

    bf3a7f9644def952a02f902f25513f2bf9e71ac4174f3ddc453103e389099759.exe

  • Size

    5.6MB

  • MD5

    46bb915d24fb3aa451b5d8f01cc75df9

  • SHA1

    86778776c35d6d21552936b8dfd64bf8de3e5061

  • SHA256

    bf3a7f9644def952a02f902f25513f2bf9e71ac4174f3ddc453103e389099759

  • SHA512

    b2f4d10720e9af6315196c30dc67b6cb9ac1ecb6184efa9448ef09b28075d56d0431eb38f2e7480806934477de82063aac39222f93500baa7ed5dc5d43a0ce12

  • SSDEEP

    98304:viRmxZFsM4kxzDcT+GcY437KvDwEHuujlsaSzsC0p43MpQdZ9nc+fsCb+oSBAON6:6Rm1syxacY48eda2TMpQdZ9nc+fyhNjG

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Unexpected DNS network traffic destination 1 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 34 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf3a7f9644def952a02f902f25513f2bf9e71ac4174f3ddc453103e389099759.exe
    "C:\Users\Admin\AppData\Local\Temp\bf3a7f9644def952a02f902f25513f2bf9e71ac4174f3ddc453103e389099759.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3648
    • C:\Users\Admin\AppData\Local\Temp\is-HO6G5.tmp\is-PIEQM.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-HO6G5.tmp\is-PIEQM.tmp" /SL4 $601FE "C:\Users\Admin\AppData\Local\Temp\bf3a7f9644def952a02f902f25513f2bf9e71ac4174f3ddc453103e389099759.exe" 5597940 141824
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:940
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:516
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:2948
        • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe
          "C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -i
          3⤵
          • Executes dropped EXE
          PID:4940
        • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe
          "C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe" -s
          3⤵
          • Executes dropped EXE
          PID:2576

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe

            Filesize

            4.4MB

            MD5

            81bf17b6bc712eec07e481349afc3dbc

            SHA1

            eedecca191d3a6b1f16483714343fe1019d7fc62

            SHA256

            81baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b

            SHA512

            3aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171

          • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe

            Filesize

            4.4MB

            MD5

            81bf17b6bc712eec07e481349afc3dbc

            SHA1

            eedecca191d3a6b1f16483714343fe1019d7fc62

            SHA256

            81baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b

            SHA512

            3aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171

          • C:\Program Files (x86)\Smart Projects\IsoBuster\IsoBuster_1121.exe

            Filesize

            4.4MB

            MD5

            81bf17b6bc712eec07e481349afc3dbc

            SHA1

            eedecca191d3a6b1f16483714343fe1019d7fc62

            SHA256

            81baf334067384061f84fb8335cd811aa22984601ad103e3f575f0a5cb9a639b

            SHA512

            3aa53bfc176d2313e7a02c8f3511e1892adcacf02ee28135e5ae46b1224fdfaef6ddcba8b5f9b340c40c39d22b87d23468401df2c84ac57c57fdeabf2f302171

          • C:\Users\Admin\AppData\Local\Temp\is-HO6G5.tmp\is-PIEQM.tmp

            Filesize

            642KB

            MD5

            e57693101a63b1f934f462bc7a2ef093

            SHA1

            2748ea8c66b980f14c9ce36c1c3061e690cf3ce7

            SHA256

            71267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f

            SHA512

            3dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e

          • C:\Users\Admin\AppData\Local\Temp\is-HO6G5.tmp\is-PIEQM.tmp

            Filesize

            642KB

            MD5

            e57693101a63b1f934f462bc7a2ef093

            SHA1

            2748ea8c66b980f14c9ce36c1c3061e690cf3ce7

            SHA256

            71267ff94c9fc72cbffaeed3bc2f33cef1eeb1887c29c574d7f26595d1a6235f

            SHA512

            3dcda686a85b19a9c7b4c96d132e90ed43c7df13ce9456beb2b88c278d8068cc3abcbfe25b1607c7b8281d276efb24809730f352927b326254f3208cbdf54a3e

          • \Users\Admin\AppData\Local\Temp\is-B1MUH.tmp\_iscrypt.dll

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • memory/940-7-0x00000000001F0000-0x00000000001F1000-memory.dmp

            Filesize

            4KB

          • memory/940-94-0x0000000000400000-0x00000000004CF000-memory.dmp

            Filesize

            828KB

          • memory/940-92-0x00000000001F0000-0x00000000001F1000-memory.dmp

            Filesize

            4KB

          • memory/2576-117-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-108-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-90-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-140-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-137-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-133-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-95-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-96-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-99-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-102-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-105-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-130-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-111-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-113-0x0000000000B20000-0x0000000000BC4000-memory.dmp

            Filesize

            656KB

          • memory/2576-112-0x0000000000B20000-0x0000000000BC4000-memory.dmp

            Filesize

            656KB

          • memory/2576-127-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-118-0x0000000000B20000-0x0000000000BC4000-memory.dmp

            Filesize

            656KB

          • memory/2576-121-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/2576-124-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/3648-1-0x0000000000400000-0x0000000000429000-memory.dmp

            Filesize

            164KB

          • memory/3648-91-0x0000000000400000-0x0000000000429000-memory.dmp

            Filesize

            164KB

          • memory/4940-86-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/4940-82-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB

          • memory/4940-84-0x0000000000400000-0x000000000086F000-memory.dmp

            Filesize

            4.4MB