Analysis

  • max time kernel
    199s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    28/10/2023, 23:30

General

  • Target

    GOSTH.exe

  • Size

    12.0MB

  • MD5

    8a6621ef2a40bdf4c3e709348025dd75

  • SHA1

    4669cb3d48201caf2ec4d886c9d6484d8c159806

  • SHA256

    33404548b77479ba69c3007ab280cda78d854095317e4e3d1e359150c7da1830

  • SHA512

    9c6efd76533fe44d51ed5f26b86a12f978945e78bfdaa39feaba98adda67b53baf7a91acd023cf79d595e6107e28ad23d3b25404617ac743927dd355b023c763

  • SSDEEP

    196608:wz08t3q6WAqF8GlSUtG1Dj4mK6Cv5IKvQFYMr4z6d9LtPvaXvD/2QRV1DMx:wI8tGF8sStjHK6+50Yaoi1NvAvDOQRvu

Score
10/10

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 9 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in System32 directory 5 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Windows directory 5 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\GOSTH.exe
    "C:\Users\Admin\AppData\Local\Temp\GOSTH.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2772
    • \??\c:\users\admin\appdata\local\temp\gosth.exe 
      c:\users\admin\appdata\local\temp\gosth.exe 
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2488
    • C:\Windows\Resources\Themes\icsys.icn.exe
      C:\Windows\Resources\Themes\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2972
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:268
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2276
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visiblity of hidden/system files in Explorer
            • Executes dropped EXE
            • Loads dropped DLL
            • Adds Run key to start application
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1208
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:320
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 23:35 /f
              6⤵
              • Creates scheduled task(s)
              PID:2744
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 23:36 /f
              6⤵
              • Creates scheduled task(s)
              PID:1476
        • C:\Windows\Explorer.exe
          C:\Windows\Explorer.exe
          4⤵
            PID:2160

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\gosth.exe 

      Filesize

      11.8MB

      MD5

      1294281dbfd0bca99e5e696b24427532

      SHA1

      e6bf82ae428bf2c34a9269e59b5db515c10f7bbd

      SHA256

      bc8ff526ced651295f1394f5b994df93cc390f8e13e5d4b2ffbea5c7530114f4

      SHA512

      6c15af4a3c864b067dab85e8ca67016739a8c41eed79f9c30ff056ec3bfd5600c71f72b32532fc7f52eb1118a3591d0570d40ea8b54be55c39653bdb98ec6d5a

    • C:\Windows\Resources\Themes\explorer.exe

      Filesize

      135KB

      MD5

      bf27c9265bc77f830ea2fac812cb7ef9

      SHA1

      173e3c0d487f08a7a7c625acf0486405cabbe347

      SHA256

      d9bae8cd250ce78fea7f3652c8c24ae7a1743666b48cfb14f6b88a558a5af827

      SHA512

      72a4ac32df8323084635c6d2d39b945c7607c0e6665f262b590449649f91aa67f1d1576f59bec8326de5986fc917f8c00a8334f60736f17e1c34cd7d5239bbba

    • C:\Windows\Resources\Themes\explorer.exe

      Filesize

      135KB

      MD5

      bf27c9265bc77f830ea2fac812cb7ef9

      SHA1

      173e3c0d487f08a7a7c625acf0486405cabbe347

      SHA256

      d9bae8cd250ce78fea7f3652c8c24ae7a1743666b48cfb14f6b88a558a5af827

      SHA512

      72a4ac32df8323084635c6d2d39b945c7607c0e6665f262b590449649f91aa67f1d1576f59bec8326de5986fc917f8c00a8334f60736f17e1c34cd7d5239bbba

    • C:\Windows\Resources\Themes\icsys.icn.exe

      Filesize

      135KB

      MD5

      d6317b6f27ee2e6e557a7cd8fbc78bef

      SHA1

      f757c1c6618fd8c577dc3c313b7194fe544806c7

      SHA256

      a7c833583c989ae5f7ed05f47c8c3735cb44a4c3bec9623bd1f795c6ac56ad29

      SHA512

      95a8e745e477b3aa51a2787d953d4e4c32e52156f89c2b537576dda5a90bbf80c0f34d636e061dc0f2c8db7f9a3df5f0a86c3134f6fec41e1b13b6fd66f2ab0e

    • C:\Windows\Resources\spoolsv.exe

      Filesize

      135KB

      MD5

      9246579ddbafb35a5c84d38ab322ec2b

      SHA1

      c9c11c33d111039558ca24acdb749c2464807f7d

      SHA256

      907a40b426ca95133fc2430ca8b8d27f5a5373614583587d6bd6b86d374025d8

      SHA512

      f2d62377c950acfc3a40972979803c100e337931812fd4de205b6381e5deb673bcf66164ebd32bd153f6abb69497a4dbf59550de3e8f7b113bda98c1cf4c86f9

    • C:\Windows\Resources\spoolsv.exe

      Filesize

      135KB

      MD5

      9246579ddbafb35a5c84d38ab322ec2b

      SHA1

      c9c11c33d111039558ca24acdb749c2464807f7d

      SHA256

      907a40b426ca95133fc2430ca8b8d27f5a5373614583587d6bd6b86d374025d8

      SHA512

      f2d62377c950acfc3a40972979803c100e337931812fd4de205b6381e5deb673bcf66164ebd32bd153f6abb69497a4dbf59550de3e8f7b113bda98c1cf4c86f9

    • C:\Windows\Resources\svchost.exe

      Filesize

      135KB

      MD5

      98dde6902d4c037d0656cc06abf6e907

      SHA1

      b2703edd739e2a91fede221cff0058c4fe96668c

      SHA256

      5c401f93d7e8685850f22d96966514dfebd6b89faa3a7efa2253ebaf80cdcefc

      SHA512

      72c846a3e3942fb805779fbf548cd158631828f95e696a51ef348d909852bda9f5697468a802e09f9632df0b5bd43340caf443f8fe5179660740916ab248d989

    • \??\c:\users\admin\appdata\local\temp\gosth.exe 

      Filesize

      11.8MB

      MD5

      1294281dbfd0bca99e5e696b24427532

      SHA1

      e6bf82ae428bf2c34a9269e59b5db515c10f7bbd

      SHA256

      bc8ff526ced651295f1394f5b994df93cc390f8e13e5d4b2ffbea5c7530114f4

      SHA512

      6c15af4a3c864b067dab85e8ca67016739a8c41eed79f9c30ff056ec3bfd5600c71f72b32532fc7f52eb1118a3591d0570d40ea8b54be55c39653bdb98ec6d5a

    • \??\c:\windows\resources\spoolsv.exe

      Filesize

      135KB

      MD5

      9246579ddbafb35a5c84d38ab322ec2b

      SHA1

      c9c11c33d111039558ca24acdb749c2464807f7d

      SHA256

      907a40b426ca95133fc2430ca8b8d27f5a5373614583587d6bd6b86d374025d8

      SHA512

      f2d62377c950acfc3a40972979803c100e337931812fd4de205b6381e5deb673bcf66164ebd32bd153f6abb69497a4dbf59550de3e8f7b113bda98c1cf4c86f9

    • \??\c:\windows\resources\svchost.exe

      Filesize

      135KB

      MD5

      98dde6902d4c037d0656cc06abf6e907

      SHA1

      b2703edd739e2a91fede221cff0058c4fe96668c

      SHA256

      5c401f93d7e8685850f22d96966514dfebd6b89faa3a7efa2253ebaf80cdcefc

      SHA512

      72c846a3e3942fb805779fbf548cd158631828f95e696a51ef348d909852bda9f5697468a802e09f9632df0b5bd43340caf443f8fe5179660740916ab248d989

    • \??\c:\windows\resources\themes\explorer.exe

      Filesize

      135KB

      MD5

      bf27c9265bc77f830ea2fac812cb7ef9

      SHA1

      173e3c0d487f08a7a7c625acf0486405cabbe347

      SHA256

      d9bae8cd250ce78fea7f3652c8c24ae7a1743666b48cfb14f6b88a558a5af827

      SHA512

      72a4ac32df8323084635c6d2d39b945c7607c0e6665f262b590449649f91aa67f1d1576f59bec8326de5986fc917f8c00a8334f60736f17e1c34cd7d5239bbba

    • \??\c:\windows\resources\themes\icsys.icn.exe

      Filesize

      135KB

      MD5

      d6317b6f27ee2e6e557a7cd8fbc78bef

      SHA1

      f757c1c6618fd8c577dc3c313b7194fe544806c7

      SHA256

      a7c833583c989ae5f7ed05f47c8c3735cb44a4c3bec9623bd1f795c6ac56ad29

      SHA512

      95a8e745e477b3aa51a2787d953d4e4c32e52156f89c2b537576dda5a90bbf80c0f34d636e061dc0f2c8db7f9a3df5f0a86c3134f6fec41e1b13b6fd66f2ab0e

    • \Users\Admin\AppData\Local\Temp\gosth.exe 

      Filesize

      11.8MB

      MD5

      1294281dbfd0bca99e5e696b24427532

      SHA1

      e6bf82ae428bf2c34a9269e59b5db515c10f7bbd

      SHA256

      bc8ff526ced651295f1394f5b994df93cc390f8e13e5d4b2ffbea5c7530114f4

      SHA512

      6c15af4a3c864b067dab85e8ca67016739a8c41eed79f9c30ff056ec3bfd5600c71f72b32532fc7f52eb1118a3591d0570d40ea8b54be55c39653bdb98ec6d5a

    • \Users\Admin\AppData\Local\Temp\gosth.exe 

      Filesize

      11.8MB

      MD5

      1294281dbfd0bca99e5e696b24427532

      SHA1

      e6bf82ae428bf2c34a9269e59b5db515c10f7bbd

      SHA256

      bc8ff526ced651295f1394f5b994df93cc390f8e13e5d4b2ffbea5c7530114f4

      SHA512

      6c15af4a3c864b067dab85e8ca67016739a8c41eed79f9c30ff056ec3bfd5600c71f72b32532fc7f52eb1118a3591d0570d40ea8b54be55c39653bdb98ec6d5a

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      135KB

      MD5

      bf27c9265bc77f830ea2fac812cb7ef9

      SHA1

      173e3c0d487f08a7a7c625acf0486405cabbe347

      SHA256

      d9bae8cd250ce78fea7f3652c8c24ae7a1743666b48cfb14f6b88a558a5af827

      SHA512

      72a4ac32df8323084635c6d2d39b945c7607c0e6665f262b590449649f91aa67f1d1576f59bec8326de5986fc917f8c00a8334f60736f17e1c34cd7d5239bbba

    • \Windows\Resources\Themes\icsys.icn.exe

      Filesize

      135KB

      MD5

      d6317b6f27ee2e6e557a7cd8fbc78bef

      SHA1

      f757c1c6618fd8c577dc3c313b7194fe544806c7

      SHA256

      a7c833583c989ae5f7ed05f47c8c3735cb44a4c3bec9623bd1f795c6ac56ad29

      SHA512

      95a8e745e477b3aa51a2787d953d4e4c32e52156f89c2b537576dda5a90bbf80c0f34d636e061dc0f2c8db7f9a3df5f0a86c3134f6fec41e1b13b6fd66f2ab0e

    • \Windows\Resources\spoolsv.exe

      Filesize

      135KB

      MD5

      9246579ddbafb35a5c84d38ab322ec2b

      SHA1

      c9c11c33d111039558ca24acdb749c2464807f7d

      SHA256

      907a40b426ca95133fc2430ca8b8d27f5a5373614583587d6bd6b86d374025d8

      SHA512

      f2d62377c950acfc3a40972979803c100e337931812fd4de205b6381e5deb673bcf66164ebd32bd153f6abb69497a4dbf59550de3e8f7b113bda98c1cf4c86f9

    • \Windows\Resources\spoolsv.exe

      Filesize

      135KB

      MD5

      9246579ddbafb35a5c84d38ab322ec2b

      SHA1

      c9c11c33d111039558ca24acdb749c2464807f7d

      SHA256

      907a40b426ca95133fc2430ca8b8d27f5a5373614583587d6bd6b86d374025d8

      SHA512

      f2d62377c950acfc3a40972979803c100e337931812fd4de205b6381e5deb673bcf66164ebd32bd153f6abb69497a4dbf59550de3e8f7b113bda98c1cf4c86f9

    • \Windows\Resources\svchost.exe

      Filesize

      135KB

      MD5

      98dde6902d4c037d0656cc06abf6e907

      SHA1

      b2703edd739e2a91fede221cff0058c4fe96668c

      SHA256

      5c401f93d7e8685850f22d96966514dfebd6b89faa3a7efa2253ebaf80cdcefc

      SHA512

      72c846a3e3942fb805779fbf548cd158631828f95e696a51ef348d909852bda9f5697468a802e09f9632df0b5bd43340caf443f8fe5179660740916ab248d989

    • \Windows\System32\d3dcompiler_43.dll

      Filesize

      2.4MB

      MD5

      ada0c39d4eacdc81fd84163a95d62079

      SHA1

      207321f1b449985b2d06ed50b989fa6259e4eb8e

      SHA256

      44c3a7e330b54a35a9efa015831392593aa02e7da1460be429d17c3644850e8a

      SHA512

      1afc63db5d2030b76abc19094fc9fef28cc6250bd265294647e65db81f13749c867722924460f7a6021c739f4057f95501f0322cdec28a2101bf94164557a1a5

    • \Windows\System32\d3dx11_43.dll

      Filesize

      270KB

      MD5

      9d6429f410597750b2dc2579b2347303

      SHA1

      e35acb15ea52f6cd0587b4ca8da0486b859fd048

      SHA256

      981e42629df751217406e7150477cddc853b79abd6a8568a1566298ed8f7bd59

      SHA512

      46cbfb1e22c3f469bdc80515560448f6f83607fd6974bb68b9c7f86ca10c69878f1312b32c81c0f57b931c43bad80bd46bdf26ab4ffb999abb0b73de27ad7c56

    • memory/268-93-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/268-94-0x0000000000270000-0x000000000028F000-memory.dmp

      Filesize

      124KB

    • memory/320-81-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/1208-76-0x0000000000340000-0x000000000035F000-memory.dmp

      Filesize

      124KB

    • memory/1208-95-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2276-82-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2276-68-0x0000000000280000-0x000000000029F000-memory.dmp

      Filesize

      124KB

    • memory/2488-22-0x0000000140000000-0x0000000141AE4000-memory.dmp

      Filesize

      26.9MB

    • memory/2488-14-0x0000000076EE0000-0x0000000076EE2000-memory.dmp

      Filesize

      8KB

    • memory/2488-10-0x0000000076EE0000-0x0000000076EE2000-memory.dmp

      Filesize

      8KB

    • memory/2488-31-0x0000000076D30000-0x0000000076ED9000-memory.dmp

      Filesize

      1.7MB

    • memory/2488-29-0x0000000140000000-0x0000000141AE4000-memory.dmp

      Filesize

      26.9MB

    • memory/2488-12-0x0000000076EE0000-0x0000000076EE2000-memory.dmp

      Filesize

      8KB

    • memory/2488-18-0x0000000076D30000-0x0000000076ED9000-memory.dmp

      Filesize

      1.7MB

    • memory/2488-21-0x0000000076EF0000-0x0000000076EF2000-memory.dmp

      Filesize

      8KB

    • memory/2488-19-0x0000000076EF0000-0x0000000076EF2000-memory.dmp

      Filesize

      8KB

    • memory/2488-16-0x0000000076EF0000-0x0000000076EF2000-memory.dmp

      Filesize

      8KB

    • memory/2488-83-0x0000000180000000-0x00000001807F3000-memory.dmp

      Filesize

      7.9MB

    • memory/2488-87-0x0000000180000000-0x00000001807F3000-memory.dmp

      Filesize

      7.9MB

    • memory/2488-15-0x0000000140000000-0x0000000141AE4000-memory.dmp

      Filesize

      26.9MB

    • memory/2488-51-0x0000000180000000-0x00000001807F3000-memory.dmp

      Filesize

      7.9MB

    • memory/2488-90-0x0000000180000000-0x00000001807F3000-memory.dmp

      Filesize

      7.9MB

    • memory/2488-91-0x0000000076D30000-0x0000000076ED9000-memory.dmp

      Filesize

      1.7MB

    • memory/2488-92-0x0000000140000000-0x0000000141AE4000-memory.dmp

      Filesize

      26.9MB

    • memory/2772-0-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2772-42-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/2972-88-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB