Analysis

  • max time kernel
    604s
  • max time network
    608s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2024, 13:20

General

  • Target
    BlitzedGrabberV12/BlitzedGrabberV12.exe
  • Size 926.0MB
  • Sample240505-qlgrhaed26
  • SHA256 eacf04d721fe4880dc73790ccbd58acf310dc0c90b13b7424200a9aa2b94640a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • orcus

C2
  • 209.25.141.181:40489

Mutex
  • 248d60d8a7114264bce951ca45664b1d

Attributes
  • autostart_method

    TaskScheduler

  • enable_keylogger

    true

  • install_path

    %programdata%\Chrome\chromedriver.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    winlogon.exe

  • watchdog_path

    AppData\svchost.exe

Signatures

  • Orcus

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

  • Orcus main payload 1 IoCs
  • Orcurs Rat Executable 2 IoCs
  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 33 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 3 IoCs
  • Drops file in Windows directory 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 23 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\BlitzedGrabberV12\BlitzedGrabberV12.exe
    "C:\Users\Admin\AppData\Local\Temp\BlitzedGrabberV12\BlitzedGrabberV12.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5096
    • C:\Users\Admin\AppData\Local\Temp\mxfix.EXE
      "C:\Users\Admin\AppData\Local\Temp\mxfix.EXE"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:844
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell.exe -ExecutionPolicy Bypass -File mxfixer.ps1
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3924
    • C:\Users\Admin\AppData\Local\Temp\UnityCrashHandlerV2.exe
      "C:\Users\Admin\AppData\Local\Temp\UnityCrashHandlerV2.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops desktop.ini file(s)
      • Drops file in System32 directory
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:3848
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
        "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\jm04dzwl.cmdline"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2540
        • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
          C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES6E2C.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC6E2B.tmp"
          4⤵
            PID:4520
        • C:\Windows\SysWOW64\WindowsInput.exe
          "C:\Windows\SysWOW64\WindowsInput.exe" --install
          3⤵
          • Executes dropped EXE
          • Drops file in System32 directory
          PID:5016
        • C:\ProgramData\Chrome\chromedriver.exe
          "C:\ProgramData\Chrome\chromedriver.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2172
          • C:\Users\Admin\AppData\Roaming\svchost.exe
            "C:\Users\Admin\AppData\Roaming\svchost.exe" /launchSelfAndExit "C:\ProgramData\Chrome\chromedriver.exe" 2172 /protectFile
            4⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2512
            • C:\Users\Admin\AppData\Roaming\svchost.exe
              "C:\Users\Admin\AppData\Roaming\svchost.exe" /watchProcess "C:\ProgramData\Chrome\chromedriver.exe" 2172 "/protectFile"
              5⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:6104
      • C:\Users\Admin\AppData\Local\Temp\BlitzedGrabberV12.exe
        "C:\Users\Admin\AppData\Local\Temp\BlitzedGrabberV12.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetWindowsHookEx
        PID:1620
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe"
      1⤵
      • Executes dropped EXE
      PID:4224
    • C:\ProgramData\Chrome\chromedriver.exe
      C:\ProgramData\Chrome\chromedriver.exe
      1⤵
      • Executes dropped EXE
      PID:844
    • C:\ProgramData\Chrome\chromedriver.exe
      C:\ProgramData\Chrome\chromedriver.exe
      1⤵
      • Executes dropped EXE
      PID:3780

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          chromedriver.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\chromedriver.exe.log
          • Size 1KB
          • SHA256 5e4c38466764be178ea21ba3149d0580d25d035b57e081b3abb9c06a19cfd67a
          • MD5 SHA1 SHA512

          BlitzedGrabberV12.exe

          • Path C:\Users\Admin\AppData\Local\Temp\BlitzedGrabberV12.exe
          • Size 1.6MB
          • SHA256 920bec9d500f6446b84399ab4c84858d0f0d7d1abb2e0377399ebbc4bafad709
          • MD5 SHA1 SHA512 SSDEEP

          mxfixer.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\mxfixer.ps1
          • Size 35B
          • SHA256 41eccaa8649345b33e57f5d494429276e9f2eb23ca981f018da33a34aabfd8eb
          • MD5 SHA1 SHA512

          RES6E2C.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\RES6E2C.tmp
          • Size 1KB
          • SHA256 52d9f5e2920a3a135dd75c1747d4de24af54223dc31aecaf8840b7a97fa5fe27
          • MD5 SHA1 SHA512

          UnityCrashHandlerV2.exe

          • Path C:\Users\Admin\AppData\Local\Temp\UnityCrashHandlerV2.exe
          • Size 6.0MB
          • SHA256 c101904ec19b45612213c2b398892a4523f63862bb3e24c245509db2417585e7
          • MD5 SHA1 SHA512 SSDEEP

          __PSScriptPolicyTest_3vye2wpq.0jo.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3vye2wpq.0jo.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512

          GunaDotNetRT.dll

          • Path C:\Users\Admin\AppData\Local\Temp\dcfb00f9-5ae7-4197-ba59-e48107e40d35\GunaDotNetRT.dll
          • Size 136KB
          • SHA256 77dc05a6bda90757f66552ee3f469b09f1e00732b4edca0f542872fb591ed9db
          • MD5 SHA1 SHA512 SSDEEP

          jm04dzwl.dll

          • Path C:\Users\Admin\AppData\Local\Temp\jm04dzwl.dll
          • Size 76KB
          • SHA256 111708aa7f4eac2a94778eff202dbdc5d1533c12729a0e2b589c6664f51e8277
          • MD5 SHA1 SHA512 SSDEEP

          mxfix.EXE

          • Path C:\Users\Admin\AppData\Local\Temp\mxfix.EXE
          • Size 155KB
          • SHA256 e18ba6573b9aa2d139ed5c30f18ac2ece3ce8287d1651db4bc632dbc816f53bd
          • MD5 SHA1 SHA512 SSDEEP

          svchost.exe

          • Path C:\Users\Admin\AppData\Roaming\svchost.exe
          • Size 9KB
          • SHA256 8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a
          • MD5 SHA1 SHA512 SSDEEP

          WindowsInput.exe

          • Path C:\Windows\SysWOW64\WindowsInput.exe
          • Size 21KB
          • SHA256 8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
          • MD5 SHA1 SHA512 SSDEEP

          WindowsInput.exe.config

          • Path C:\Windows\SysWOW64\WindowsInput.exe.config
          • Size 357B
          • SHA256 f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
          • MD5 SHA1 SHA512

          CSC6E2B.tmp

          • Path \??\c:\Users\Admin\AppData\Local\Temp\CSC6E2B.tmp
          • Size 676B
          • SHA256 eec4486441352e4c2290a9ca3af94f0b048750abdea572f80fb48777cad0c828
          • MD5 SHA1 SHA512

          jm04dzwl.0.cs

          • Path \??\c:\Users\Admin\AppData\Local\Temp\jm04dzwl.0.cs
          • Size 208KB
          • SHA256 5d3c8fe9dc3d9b63998c07c152a395a2a4cfc5421d820485c649369721e672bf
          • MD5 SHA1 SHA512 SSDEEP

          jm04dzwl.cmdline

          • Path \??\c:\Users\Admin\AppData\Local\Temp\jm04dzwl.cmdline
          • Size 349B
          • SHA256 713dc1dbaa0946ac61cc713da53373f96cd72cc4cc09facf63ecc99e4796451e
          • MD5 SHA1 SHA512

          memory/1620-114-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-83-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-11810-0x0000000071020000-0x0000000071057000-memory.dmp

          memory/1620-62-0x0000000005A80000-0x0000000005A8A000-memory.dmp

          memory/1620-63-0x0000000005C40000-0x0000000005E32000-memory.dmp

          memory/1620-11804-0x0000000006A80000-0x0000000006B1C000-memory.dmp

          memory/1620-79-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-120-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-130-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-135-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-132-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-129-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-126-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-124-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-122-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-119-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-110-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-108-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-106-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-104-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-102-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-101-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-100-0x0000000071020000-0x0000000071057000-memory.dmp

          memory/1620-116-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-71-0x0000000073330000-0x00000000733B9000-memory.dmp

          memory/1620-72-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-73-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-75-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-77-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-81-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-85-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-53-0x00000000058C0000-0x0000000005952000-memory.dmp

          memory/1620-51-0x0000000005F30000-0x00000000064D4000-memory.dmp

          memory/1620-87-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-89-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-91-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-93-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-50-0x0000000000EA0000-0x000000000104C000-memory.dmp

          memory/1620-95-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-97-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/1620-112-0x0000000005C40000-0x0000000005E2E000-memory.dmp

          memory/2172-3134-0x0000000002740000-0x000000000278E000-memory.dmp

          memory/2172-3749-0x000000001BC10000-0x000000001BDD2000-memory.dmp

          memory/2172-3750-0x000000001B9F0000-0x000000001BA00000-memory.dmp

          memory/2172-3519-0x000000001B8D0000-0x000000001B8E8000-memory.dmp

          memory/2172-2589-0x0000000000670000-0x000000000076C000-memory.dmp

          memory/2172-3133-0x0000000002710000-0x0000000002722000-memory.dmp

          memory/2512-4368-0x0000000000C30000-0x0000000000C38000-memory.dmp

          memory/3848-996-0x0000000000A50000-0x0000000000A58000-memory.dmp

          memory/3848-57-0x000000001B340000-0x000000001B34E000-memory.dmp

          memory/3848-59-0x000000001BD90000-0x000000001BE2C000-memory.dmp

          memory/3848-997-0x000000001C490000-0x000000001C4B0000-memory.dmp

          memory/3848-54-0x000000001B140000-0x000000001B19C000-memory.dmp

          memory/3848-993-0x000000001C450000-0x000000001C466000-memory.dmp

          memory/3848-995-0x0000000000A70000-0x0000000000A82000-memory.dmp

          memory/3848-48-0x0000000000A20000-0x0000000000A30000-memory.dmp

          memory/3848-58-0x000000001B820000-0x000000001BCEE000-memory.dmp

          memory/3924-43-0x000001BAD4A80000-0x000001BAD4AA2000-memory.dmp

          memory/4224-1637-0x0000000019E30000-0x0000000019F3A000-memory.dmp

          memory/5016-1013-0x00000000024D0000-0x000000000250C000-memory.dmp

          memory/5016-1011-0x00000000003A0000-0x00000000003AC000-memory.dmp

          memory/5016-1012-0x0000000002330000-0x0000000002342000-memory.dmp

          memory/5096-0-0x00007FFD2F5A3000-0x00007FFD2F5A5000-memory.dmp

          memory/5096-49-0x00007FFD2F5A0000-0x00007FFD30061000-memory.dmp

          memory/5096-3-0x00007FFD2F5A0000-0x00007FFD30061000-memory.dmp

          memory/5096-1-0x00000000009D0000-0x0000000000C14000-memory.dmp