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
    208s
  • max time network
    297s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-06-2024 01:50

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

dex9

C2

http://45.132.105.157

Attributes
  • url_path

    /eb155c7506e03ca9.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.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 24 IoCs
  • Suspicious behavior: MapViewOfSection 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:2944
      • C:\Windows\SysWOW64\dialer.exe
        "C:\Windows\system32\dialer.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4208
    • 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:4804
      • C:\Program Files (x86)\Dexis\Dexis.exe
        "C:\Program Files (x86)\Dexis\Dexis.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:2380
        • 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:2932
        • 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:2344
        • 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:2568
        • 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:4340
        • C:\Users\Admin\AppData\Local\Temp\dd5d75e7-36f5-4455-855f-5ed828c5a81b\snss1.exe
          "C:\Users\Admin\AppData\Local\Temp\dd5d75e7-36f5-4455-855f-5ed828c5a81b\snss1.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:4436
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\SysWOW64\cmd.exe
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:2672
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              5⤵
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:2112
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Windows\SysWOW64\explorer.exe" & del "C:\ProgramData\*.dll"" & exit
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:3312
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 5
                  7⤵
                  • Delays execution with timeout.exe
                  PID:2848
        • C:\Users\Admin\AppData\Local\Temp\dd5d75e7-36f5-4455-855f-5ed828c5a81b\snss2.exe
          "C:\Users\Admin\AppData\Local\Temp\dd5d75e7-36f5-4455-855f-5ed828c5a81b\snss2.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:368
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\SysWOW64\cmd.exe
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:3548
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              5⤵
              • Suspicious use of NtCreateUserProcessOtherParentProcess
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1724

    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

      ab24765a7393bd3cef8acbf0a617fba2

      SHA1

      ef2c12a457a11f6204344afed09a39f4d3e803cb

      SHA256

      3a03c7efabe880ae9f283b1cf373d3f09d07ab619028319b3599b643ae140d47

      SHA512

      e16306674a8c89f54467d7fba3857e1e0bdf3729f5de9f4451520cfbddfa535c4d653dde6efcac38efd693e9b3e4965fcd08c559e720c372feca65050b46e355

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

      Filesize

      944B

      MD5

      10890cda4b6eab618e926c4118ab0647

      SHA1

      1e1d63b73a0e6c7575f458b3c7917a9ce5ba776d

      SHA256

      00f8a035324d39bd62e6dee5e1b480069015471c487ebee4479e6990ea9ddb14

      SHA512

      a2ee84006c24a36f25e0bca0772430d64e3791f233da916aecdeae6712763e77d55bbbd00dc8f6b2b3887f3c26ab3980b96c5f46cc823e81e28abbbc5fc78221

    • C:\Users\Admin\AppData\Local\Temp\587792b9

      Filesize

      1.0MB

      MD5

      aecb0e2a93a5ab0bfd0c1c57a46faf55

      SHA1

      e787e1a30dbb7ac7344e0962cce09ae08c06d2dd

      SHA256

      e4899cdaef8b4b0d0ecc7a64770c1240375e693c305993da495fb1be6fe641da

      SHA512

      065076d34f800cf9d2e60fa85628e28cd2f51c73a37f22d8c2b534d25daf8c573e4c70c45916d2b5abeea637f194ff4c79276c3a81cf05d973b16f7b17d5850a

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_31mflxsy.fbw.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\dd5d75e7-36f5-4455-855f-5ed828c5a81b\snss1.exe

      Filesize

      1.0MB

      MD5

      ffdc69212e6267315ce7fc7c5e8b517c

      SHA1

      d1e6c1a2acf1877439f207d6377987f5a13756e9

      SHA256

      939b4ad64a2fee79a9c587e6ba51da1a91776bc0ba981d6bfdf4ce4e9d38692a

      SHA512

      1a0f2e83397c7bef5e88b0a59321533f33154546594a8710dad8fbd4bccca67969787cdf73f2afb7155cd59742af50dd1bee88ed35eec4f2a2a41d34710dca0d

    • C:\Users\Admin\AppData\Local\Temp\dd5d75e7-36f5-4455-855f-5ed828c5a81b\snss2.exe

      Filesize

      7.7MB

      MD5

      3a856193d7f5204896257205ffbe19bf

      SHA1

      a9f0f06ca0828076b76edd913e5c8429d7bb2ca3

      SHA256

      8ab04f749508030f388cbbe218bfaf32490673793c066d4e1002b6ad56f78c1e

      SHA512

      0d3a2468f130e1431e7ef57f0021e14ecc91399addf6f6648cb689d45bd162f0f3a9931807aa4c69e341a3e49bbe63a9c04dbc841cfc7c4b36c023f7e114b63a

    • C:\Users\Admin\AppData\Local\Temp\eb8ea9ab

      Filesize

      869KB

      MD5

      b81f59bb280d390af13288597c3d7883

      SHA1

      9980c3359f140bc91f93f5e8d5de63536f9784e8

      SHA256

      b0826b29dcc28dbd136b1527f9476c4407022d03d6be203950ebc11770287bb4

      SHA512

      3d0dc502d0cd580dbfab4238f280d866ed7d7b26e6d75307b938e0f6d807e2d42442869e8086f7435f1549b7783df15703c7e2c6910bee524b4f2b134009e4e8

    • memory/368-241-0x00000000728B0000-0x0000000072A2B000-memory.dmp

      Filesize

      1.5MB

    • memory/368-239-0x0000000000400000-0x0000000000BFE000-memory.dmp

      Filesize

      8.0MB

    • memory/368-244-0x00000000728B0000-0x0000000072A2B000-memory.dmp

      Filesize

      1.5MB

    • memory/368-242-0x00007FFE958F0000-0x00007FFE95AE5000-memory.dmp

      Filesize

      2.0MB

    • memory/1724-319-0x0000000000400000-0x000000000046F000-memory.dmp

      Filesize

      444KB

    • memory/1724-316-0x0000000000400000-0x000000000046F000-memory.dmp

      Filesize

      444KB

    • memory/1724-327-0x0000000000400000-0x000000000046F000-memory.dmp

      Filesize

      444KB

    • memory/1724-325-0x0000000076F80000-0x0000000077195000-memory.dmp

      Filesize

      2.1MB

    • memory/1724-322-0x0000000003E10000-0x0000000004210000-memory.dmp

      Filesize

      4.0MB

    • memory/1724-321-0x0000000003E10000-0x0000000004210000-memory.dmp

      Filesize

      4.0MB

    • memory/1724-318-0x00007FFE958F0000-0x00007FFE95AE5000-memory.dmp

      Filesize

      2.0MB

    • memory/2112-230-0x0000000000890000-0x0000000000ACD000-memory.dmp

      Filesize

      2.2MB

    • memory/2112-232-0x0000000000890000-0x0000000000ACD000-memory.dmp

      Filesize

      2.2MB

    • memory/2112-236-0x0000000000890000-0x0000000000ACD000-memory.dmp

      Filesize

      2.2MB

    • memory/2112-249-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/2112-231-0x00007FFE958F0000-0x00007FFE95AE5000-memory.dmp

      Filesize

      2.0MB

    • memory/2112-317-0x0000000000890000-0x0000000000ACD000-memory.dmp

      Filesize

      2.2MB

    • memory/2112-235-0x0000000000890000-0x0000000000ACD000-memory.dmp

      Filesize

      2.2MB

    • memory/2112-306-0x0000000000890000-0x0000000000ACD000-memory.dmp

      Filesize

      2.2MB

    • memory/2672-228-0x0000000073A30000-0x0000000073BAB000-memory.dmp

      Filesize

      1.5MB

    • memory/2672-227-0x00007FFE958F0000-0x00007FFE95AE5000-memory.dmp

      Filesize

      2.0MB

    • memory/2932-176-0x00000256630F0000-0x0000025663112000-memory.dmp

      Filesize

      136KB

    • memory/3548-291-0x00000000728B0000-0x0000000072A2B000-memory.dmp

      Filesize

      1.5MB

    • memory/3548-247-0x00007FFE958F0000-0x00007FFE95AE5000-memory.dmp

      Filesize

      2.0MB

    • memory/4208-326-0x0000000000ED0000-0x0000000000ED9000-memory.dmp

      Filesize

      36KB

    • memory/4208-329-0x0000000002BC0000-0x0000000002FC0000-memory.dmp

      Filesize

      4.0MB

    • memory/4208-332-0x0000000076F80000-0x0000000077195000-memory.dmp

      Filesize

      2.1MB

    • memory/4208-330-0x00007FFE958F0000-0x00007FFE95AE5000-memory.dmp

      Filesize

      2.0MB

    • memory/4436-222-0x0000000140000000-0x00000001401A8000-memory.dmp

      Filesize

      1.7MB

    • memory/4436-224-0x00007FFE774E0000-0x00007FFE77652000-memory.dmp

      Filesize

      1.4MB

    • memory/4436-223-0x00007FFE774E0000-0x00007FFE77652000-memory.dmp

      Filesize

      1.4MB