Analysis

  • max time kernel
    94s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-01-2025 17:07

General

  • Target

    Steam.exe

  • Size

    5.9MB

  • MD5

    83df4320406c8a4d6a77f47f694d3489

  • SHA1

    01e3d49eeec578e954724608f8000463c939ed1a

  • SHA256

    a1c193a12ee68ca56f0286ef3b9a221198603e13b0bb207a0554e79de927a951

  • SHA512

    d34a01373453ad0e69203ad5f288141cbe514986704eaf388d3d61f50aa75056dc5c16f1cbe0ca0de553d462bed3dc558e9141164e7476a4d83791f886016b61

  • SSDEEP

    98304:piEwNGSuhSSjEUE14A3CQTC2tNf+gfdUPYk4OpurnepaphA0FqxzXYTNOJSXRTzE:pINHcjQ+Y3NGgfdUcrn4arOzI5RvgH

Malware Config

Extracted

Family

xenorat

C2

20.82.147.157

Mutex

PNB=8yfvfgb09gbu

Attributes
  • delay

    5000

  • install_path

    nothingset

  • port

    4454

  • startup_name

    OneDriveUpdater

Signatures

  • Detect XenoRat Payload 2 IoCs
  • XenorRat

    XenorRat is a remote access trojan written in C#.

  • Xenorat family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • VMProtect packed file 2 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 47 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Steam.exe
    "C:\Users\Admin\AppData\Local\Temp\Steam.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1464
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c cls
      2⤵
        PID:2264
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c mode con cols=85 lines=30
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2468
        • C:\Windows\system32\mode.com
          mode con cols=85 lines=30
          3⤵
            PID:4908
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c cls
          2⤵
            PID:4016
          • C:\Windows\Downloaded Program Files\cmdkey.exe
            "C:\Windows\Downloaded Program Files\cmdkey.exe"
            2⤵
            • Checks computer location settings
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2948
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /Create /TN "OneDriveUpdater" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC8BE.tmp" /F
              3⤵
              • System Location Discovery: System Language Discovery
              • Scheduled Task/Job: Scheduled Task
              PID:4076
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /query /v /fo csv
              3⤵
              • System Location Discovery: System Language Discovery
              PID:4844
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /delete /tn "\OneDriveUpdater" /f
              3⤵
              • System Location Discovery: System Language Discovery
              PID:3988
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /C choice /C Y /N /D Y /T 3 & Del "C:\Windows\Downloaded Program Files\cmdkey.exe"
              3⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:1052
              • C:\Windows\SysWOW64\choice.exe
                choice /C Y /N /D Y /T 3
                4⤵
                • System Location Discovery: System Language Discovery
                PID:676
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c cls
            2⤵
              PID:2780
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c cls
              2⤵
                PID:1412

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\Temp\tmpC8BE.tmp

              Filesize

              1KB

              MD5

              6a06378ae3a95005d5bbe9f905fbd540

              SHA1

              ef75d73e362a5c274f4be47901df1d5da3ab2534

              SHA256

              b88df0a62fb6589bce9779a9e41490cfc5dafa053a6e84cc897664dbb26b662e

              SHA512

              18314de231d8a9a22e4f9ce437a569c17dc0973bd290dd4810379f4f1cb157b5f495377c57c239b291ab7cad41a8cb43227bf2fbee44a2b6a8641830984d0380

            • C:\Windows\Downloaded Program Files\cmdkey.exe

              Filesize

              46KB

              MD5

              cbd03f965337189b807dcd0033dc617e

              SHA1

              8dd0f7c638e752dcfe6a93cf61545a15d3e862b6

              SHA256

              643182b3cb9fe33cbe39f0ae877b376b8ce192e957caddde2c33cc8ca2c5b11e

              SHA512

              3846403e364be3e251a284f86c5de8512604c64f0d926182952f4525a949a77af4729cc62bfaa0433a8ea56b84fc61e333fec4168b6eb298582bf238df9bc9ad

            • memory/1464-22-0x00007FF645FD0000-0x00007FF646A40000-memory.dmp

              Filesize

              10.4MB

            • memory/1464-1-0x00007FFA57B50000-0x00007FFA57B52000-memory.dmp

              Filesize

              8KB

            • memory/1464-6-0x00007FF645FD0000-0x00007FF646A40000-memory.dmp

              Filesize

              10.4MB

            • memory/1464-21-0x00007FF64605C000-0x00007FF646455000-memory.dmp

              Filesize

              4.0MB

            • memory/1464-0-0x00007FF64605C000-0x00007FF646455000-memory.dmp

              Filesize

              4.0MB

            • memory/1464-2-0x00007FFA57B60000-0x00007FFA57B62000-memory.dmp

              Filesize

              8KB

            • memory/2948-12-0x0000000074D2E000-0x0000000074D2F000-memory.dmp

              Filesize

              4KB

            • memory/2948-13-0x0000000000970000-0x0000000000982000-memory.dmp

              Filesize

              72KB

            • memory/2948-20-0x0000000074D20000-0x00000000754D0000-memory.dmp

              Filesize

              7.7MB

            • memory/2948-28-0x0000000005D60000-0x0000000005DC6000-memory.dmp

              Filesize

              408KB

            • memory/2948-29-0x0000000074D2E000-0x0000000074D2F000-memory.dmp

              Filesize

              4KB

            • memory/2948-30-0x0000000074D20000-0x00000000754D0000-memory.dmp

              Filesize

              7.7MB

            • memory/2948-31-0x0000000074D20000-0x00000000754D0000-memory.dmp

              Filesize

              7.7MB