Overview

overview

10

Static

static

3

RuntimeBroker.exe

windows7-x64

10

RuntimeBroker.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/03/2025, 19:41

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General

  • Target

    RuntimeBroker.exe

  • Size

    200KB

  • MD5

    7d856cab9faf146bd64db6e3b4250945

  • SHA1

    7c301d07ccfffcb70c6a367d6285689640bbadd9

  • SHA256

    226933448c3c854b320702c200cbea27ba19aa1d44d013e0749555398b8f6fc8

  • SHA512

    c737008f532026363cffc8417674c44291db1f62866ba44417479ba5c68f20616511cdf68f4ffab81f87d43a9c9b4ea78db36586355cd4aa928c81b95a416784

  • SSDEEP

    3072:g2L1i3qsMybTZ/SSjWK17WQvEatSVreypTaLrFiGdn076YI/rx:g2LA3JTd/BF17WWVSVSyltGd0mr

Score
10/10
xwormdefense_evasiondiscoveryexecutionpersistenceprivilege_escalationrattrojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

morning-ultimately.gl.at.ply.gg:14531

Mutex

GNRHR6CNXKcizv8c

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    WmiPrvSE.exe

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

    execution
  • Modifies Windows Firewall 2 TTPs 1 IoCs
    defense_evasion
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 4 IoCs
  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

    discovery
  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

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

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 18 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe
    "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:208
    • C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
      "C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2740
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:2340
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WmiPrvSE.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:3988
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\WmiPrvSE.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:1784
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WmiPrvSE.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious use of AdjustPrivilegeToken
        PID:2040
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WmiPrvSE" /tr "C:\Users\Admin\WmiPrvSE.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:876
    • C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
      "C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2352
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe" "RuntimeBroker.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        • System Time Discovery
        PID:4968
  • C:\Users\Admin\WmiPrvSE.exe
    C:\Users\Admin\WmiPrvSE.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2040
  • C:\Users\Admin\WmiPrvSE.exe
    C:\Users\Admin\WmiPrvSE.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3088

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Time Discovery

1
T1124

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\WmiPrvSE.exe.log
    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    944B

    MD5

    87d9fe9e5ee685ff2b66e5396fcdcb99

    SHA1

    0ac74edba86591b97d1a7531c3d2e659f0843b7f

    SHA256

    f84df996802a7b65b0a58ecd1960f157bdc82f817bae81409eb4184e438ed9b8

    SHA512

    ce602ffb6822849af961afc13b972d0d344bbfaa50c5fe372cf475f424a9227f788ea64a1dfa9b96d8e01cfa2b7f0f9e695ea001ea37a6c7c235c86931d1cf3e

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    944B

    MD5

    54522d22658e4f8f87ecb947b71b8feb

    SHA1

    6a6144bdf9c445099f52211b6122a2ecf72b77e9

    SHA256

    af18fc4864bc2982879aed928c960b6266f372c928f8c9632c5a4eecd64e448a

    SHA512

    55f2c5a455be20dcb4cb93a29e5389e0422237bdd7ac40112fec6f16a36e5e19df50d25d39a6d5acb2d41a96514c7ecd8631ce8e67c4ff04997282f49d947aba

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    944B

    MD5

    0256bd284691ed0fc502ef3c8a7e58dc

    SHA1

    dcdf69dc8ca8bf068f65d20ef1563bbe283e2413

    SHA256

    e2fb83098e114084f51ed7187334f861ce670051046c39f338928296ca9a49cf

    SHA512

    c5b29c1e0a15ddb68b0579848066774fa7cdc6f35087bbbf47c05a5c0dcc1eb3e61b2ddadfbded8c1ed9820e637596a9f08a97db8fb18000d168e6b159060c42

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2bmto2in.d5b.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    Download Submit

  • C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
    Filesize

    93KB

    MD5

    3785497fd4339e24258e3bd47b933c34

    SHA1

    8974341d2328f6561075ee16f4139fbfabdeb0f2

    SHA256

    39b7d36f78ad70c878581c1052fc6c1e0aab18312c9d8e229d9041494784f4b2

    SHA512

    17e0f9b78e9c8127109a396da564d589d89442f8dd268e11cc9317dad11eb80f345cde7568f6aea760c70b6f18ca08dc3df176b502ba0646e5c04b2936eee049

    Download Submit

  • C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
    Filesize

    97KB

    MD5

    ec259ce663d09465c4d21b005cf73948

    SHA1

    a3b4bf1fa4c4a3c42c9d58328023ce0a5b2222ec

    SHA256

    c7f2a6c05f39476160924657dc7df53cd16d5da4e8bc9116b0ea878a9ca6027c

    SHA512

    92d3f16c220dad49a7c8fa29e4fe9da0875eba64110a96d74e2b5cf44d0a62efee31be8dc494717c936543aeed65ca5649878d61bae06b18aecaecddd2ccbda2

    Download Submit

  • memory/208-1-0x0000000000710000-0x0000000000748000-memory.dmp

    Filesize

    224KB

    Download

  • memory/208-0-0x00007FFAB1ED3000-0x00007FFAB1ED5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/2340-33-0x00000248D9B20000-0x00000248D9B42000-memory.dmp

    Filesize

    136KB

    Download

  • memory/2352-80-0x0000000074FF2000-0x0000000074FF3000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2352-25-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2352-24-0x0000000074FF2000-0x0000000074FF3000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2352-81-0x0000000074FF0000-0x00000000755A1000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/2740-23-0x00007FFAB1ED0000-0x00007FFAB2991000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2740-79-0x00007FFAB1ED0000-0x00007FFAB2991000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/2740-78-0x000000001B0C0000-0x000000001B0D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2740-82-0x000000001B0C0000-0x000000001B0D0000-memory.dmp

    Filesize

    64KB

    Download

  • memory/2740-18-0x0000000000380000-0x000000000039E000-memory.dmp

    Filesize

    120KB

    Download