Resubmissions

26-07-2024 23:18

240726-3ac1dsthre 10

11-06-2024 01:50

240611-b9q8hszbqh 10

09-06-2024 15:53

240609-tbyttach24 10

Analysis

  • max time kernel
    291s
  • max time network
    314s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-06-2024 15:53

General

  • Target

    Dexis Setup.exe

  • Size

    64.6MB

  • MD5

    168e953440d699dc30a39402b4f6e625

  • SHA1

    66efd121a3fdd79b3443f1204fc3a8a8e8d76d12

  • SHA256

    c0d694f24002c77382adfeaa0f3b9c28d93e2c07d761ccaa5fc9644389031c39

  • SHA512

    0dd0edd1b6cb1e1a5c0c39975dc11a2b85c2cdc3b1f0e476b1d867d2519f37e07fb3aec6e0ab4ea2b6370281434541aa010cfa21a07543ca00edfb47dbbbc7d2

  • SSDEEP

    1572864:sQsJjyxAAJXIUEqFGX6xJU2ii8FStoKNSKqh4DFC2EPc4iUb/++O2g9mju:sQ+jyZLEqFC602h86Dc2EE4Fe9mS

Malware Config

Extracted

Family

stealc

Botnet

dex4

C2

http://45.88.77.28

Attributes
  • url_path

    /f6a9d3a0017c37c9.php

Signatures

  • Detects HijackLoader (aka IDAT Loader) 4 IoCs
  • HijackLoader

    HijackLoader is a multistage loader first seen in 2023.

  • Rhadamanthys

    Rhadamanthys is an info stealer written in C++ first seen in August 2022.

  • Stealc

    Stealc is an infostealer written in C++.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 35 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:2956
      • C:\Windows\SysWOW64\dialer.exe
        "C:\Windows\system32\dialer.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:2268
    • C:\Users\Admin\AppData\Local\Temp\Dexis Setup.exe
      "C:\Users\Admin\AppData\Local\Temp\Dexis Setup.exe"
      1⤵
      • Checks computer location settings
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1692
      • C:\Program Files (x86)\Dexis\Dexis.exe
        "C:\Program Files (x86)\Dexis\Dexis.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:436
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell" /command Add-MpPreference -ExclusionPath 'C:\Users\Admin'; Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:516
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell" /command Add-MpPreference -ExclusionPath 'C:\Users\Admin'; Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2144
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell" /command Add-MpPreference -ExclusionPath 'C:\Users\Admin'; Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:872
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell" /command Add-MpPreference -ExclusionPath 'C:\Users\Admin'; Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming'
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4852
        • C:\Users\Admin\AppData\Local\Temp\ff52f1d5-b91f-4b7e-b0a6-5f5557ea922f\snss1.exe
          "C:\Users\Admin\AppData\Local\Temp\ff52f1d5-b91f-4b7e-b0a6-5f5557ea922f\snss1.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:2792
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\SysWOW64\cmd.exe
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:2084
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              5⤵
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2476
        • C:\Users\Admin\AppData\Local\Temp\ff52f1d5-b91f-4b7e-b0a6-5f5557ea922f\snss2.exe
          "C:\Users\Admin\AppData\Local\Temp\ff52f1d5-b91f-4b7e-b0a6-5f5557ea922f\snss2.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:3476
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\SysWOW64\cmd.exe
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:740
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              5⤵
              • Suspicious use of NtCreateUserProcessOtherParentProcess
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3608

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\ProgramData\mozglue.dll
      Filesize

      593KB

      MD5

      c8fd9be83bc728cc04beffafc2907fe9

      SHA1

      95ab9f701e0024cedfbd312bcfe4e726744c4f2e

      SHA256

      ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

      SHA512

      fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

    • C:\ProgramData\nss3.dll
      Filesize

      2.0MB

      MD5

      1cc453cdf74f31e4d913ff9c10acdde2

      SHA1

      6e85eae544d6e965f15fa5c39700fa7202f3aafe

      SHA256

      ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

      SHA512

      dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
      Filesize

      2KB

      MD5

      d85ba6ff808d9e5444a4b369f5bc2730

      SHA1

      31aa9d96590fff6981b315e0b391b575e4c0804a

      SHA256

      84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

      SHA512

      8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
      Filesize

      944B

      MD5

      6d42b6da621e8df5674e26b799c8e2aa

      SHA1

      ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

      SHA256

      5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

      SHA512

      53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
      Filesize

      944B

      MD5

      34f595487e6bfd1d11c7de88ee50356a

      SHA1

      4caad088c15766cc0fa1f42009260e9a02f953bb

      SHA256

      0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

      SHA512

      10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
      Filesize

      944B

      MD5

      a7cc007980e419d553568a106210549a

      SHA1

      c03099706b75071f36c3962fcc60a22f197711e0

      SHA256

      a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

      SHA512

      b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

    • C:\Users\Admin\AppData\Local\Temp\384591b1
      Filesize

      863KB

      MD5

      71aa0d7b540edf8791aa091bb56db11e

      SHA1

      a7c9146259933f751f3c9dd6a69de95b4b3b5ab5

      SHA256

      73387e5f2ba770b953302c141da56ca3d9f8c73d1299ff9c21cae76a18f835e7

      SHA512

      51b8e686abff2911301718ce3fa78e8eff2d7440a1f65948b01b90c6b0068980f294e4dc16178a1a7f20b7f6c4ae0f99dc936d0eb5dae9998e3ce194d6a1538b

    • C:\Users\Admin\AppData\Local\Temp\9d0cf8c5
      Filesize

      1.0MB

      MD5

      ee94dca0d8e3acfef5d32fe1193bc8a8

      SHA1

      0cc0ee79105eca6efd03086846ee16b890e66d1e

      SHA256

      5a3d01e511ce8d96f6ca2af00859ac6265c690f4d179aabe660c6851c4a2a872

      SHA512

      6c42cf9dff5f2675d9054c185d63dba1383191367f6e2af7a40643fa64671293e2fb4c23bf9f797cb72072a35b9a0525587a9d34df1ce2930576db7be44bef8e

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_aznzobew.cjv.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\ff52f1d5-b91f-4b7e-b0a6-5f5557ea922f\snss1.exe
      Filesize

      9.2MB

      MD5

      3ebbfe84faff57b8927e6c9c110bd5b4

      SHA1

      1c754581660e260d71988865517084f0821a1eee

      SHA256

      73ee8e05bee3c2eaecb36f532690d36a547a9ab0f28f04941a28dfd060d6f862

      SHA512

      7993300c69ae7986fd37d2f29d420ddee2d794137d186cabce4ac4ac7ad2e8b8f936aaa6fa8cf6ec171d1a8abc9081ee3abc213f66b1e85e997bb4706e7c93a2

    • C:\Users\Admin\AppData\Local\Temp\ff52f1d5-b91f-4b7e-b0a6-5f5557ea922f\snss2.exe
      Filesize

      1.3MB

      MD5

      f7f404c612077be7822de7a8d77fdc5b

      SHA1

      369186da32f8c17ab4ef539416bff9c77a1ac063

      SHA256

      cc3ffc74ca9ab5a73a50ba91f71e6b472f819d333f67e4aff4e682da4c35eae1

      SHA512

      c2b9c2ebe891a1350a4885ab0bc8ef5844bad2fda8a5ca8adbd1831a91e34efae29da7c5e2079b423cb6bd4b09352b08e0288d628b87fd28439c305f75b1f80f

    • memory/516-171-0x000001E87E4B0000-0x000001E87E4D2000-memory.dmp
      Filesize

      136KB

    • memory/740-306-0x00007FFA6A3B0000-0x00007FFA6A5A5000-memory.dmp
      Filesize

      2.0MB

    • memory/2084-227-0x00007FFA6A3B0000-0x00007FFA6A5A5000-memory.dmp
      Filesize

      2.0MB

    • memory/2084-228-0x00000000745E0000-0x000000007475B000-memory.dmp
      Filesize

      1.5MB

    • memory/2268-318-0x0000000000EE0000-0x0000000000EE9000-memory.dmp
      Filesize

      36KB

    • memory/2268-322-0x00007FFA6A3B0000-0x00007FFA6A5A5000-memory.dmp
      Filesize

      2.0MB

    • memory/2268-324-0x00000000769D0000-0x0000000076BE5000-memory.dmp
      Filesize

      2.1MB

    • memory/2268-321-0x0000000002E80000-0x0000000003280000-memory.dmp
      Filesize

      4.0MB

    • memory/2476-231-0x00007FFA6A3B0000-0x00007FFA6A5A5000-memory.dmp
      Filesize

      2.0MB

    • memory/2476-295-0x0000000001000000-0x000000000123D000-memory.dmp
      Filesize

      2.2MB

    • memory/2476-235-0x0000000061E00000-0x0000000061EF3000-memory.dmp
      Filesize

      972KB

    • memory/2476-232-0x0000000001000000-0x000000000123D000-memory.dmp
      Filesize

      2.2MB

    • memory/2476-297-0x0000000001000000-0x000000000123D000-memory.dmp
      Filesize

      2.2MB

    • memory/2476-230-0x0000000001000000-0x000000000123D000-memory.dmp
      Filesize

      2.2MB

    • memory/2792-221-0x0000000140000000-0x0000000140935000-memory.dmp
      Filesize

      9.2MB

    • memory/2792-223-0x00007FFA5BF80000-0x00007FFA5C0F2000-memory.dmp
      Filesize

      1.4MB

    • memory/2792-224-0x00007FFA5BF80000-0x00007FFA5C0F2000-memory.dmp
      Filesize

      1.4MB

    • memory/3476-301-0x00007FF7BFA80000-0x00007FF7BFBC3000-memory.dmp
      Filesize

      1.3MB

    • memory/3476-302-0x00007FFA5BF80000-0x00007FFA5C0F2000-memory.dmp
      Filesize

      1.4MB

    • memory/3476-303-0x00007FFA5BF80000-0x00007FFA5C0F2000-memory.dmp
      Filesize

      1.4MB

    • memory/3608-310-0x00007FFA6A3B0000-0x00007FFA6A5A5000-memory.dmp
      Filesize

      2.0MB

    • memory/3608-319-0x0000000000800000-0x000000000086F000-memory.dmp
      Filesize

      444KB

    • memory/3608-314-0x0000000003D90000-0x0000000004190000-memory.dmp
      Filesize

      4.0MB

    • memory/3608-313-0x0000000003D90000-0x0000000004190000-memory.dmp
      Filesize

      4.0MB

    • memory/3608-311-0x0000000000800000-0x000000000086F000-memory.dmp
      Filesize

      444KB

    • memory/3608-317-0x00000000769D0000-0x0000000076BE5000-memory.dmp
      Filesize

      2.1MB

    • memory/3608-309-0x0000000000800000-0x000000000086F000-memory.dmp
      Filesize

      444KB