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
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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
njratxwormruntimebroker.exedefense_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

Extracted

Family

njrat

Version

0.7d

Botnet

RuntimeBroker.exe

C2

hakim32.ddns.net:2000

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

a7508ccd4c60e6eaa0eb204481c3a0be

Attributes
  • reg_key

    a7508ccd4c60e6eaa0eb204481c3a0be

  • splitter

    |'|'|

Signatures

  • Detect Xworm Payload 5 IoCs
  • Njrat family
    njrat
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • 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
  • 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 32 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⤵
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe
      "C:\Users\Admin\AppData\Roaming\WmiPrvSE.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2436
      • 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:2860
      • 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:2564
      • 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:1384
      • 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:1864
      • 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:1604
    • 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:2240
      • 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:2856
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {1699616B-526E-4571-B733-0C3B9B4E67F8} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:768
    • C:\Users\Admin\WmiPrvSE.exe
      C:\Users\Admin\WmiPrvSE.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2892
    • C:\Users\Admin\WmiPrvSE.exe
      C:\Users\Admin\WmiPrvSE.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:616

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

1
T1012

System Information Discovery

1
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\Roaming\Microsoft\Windows\Recent\CustomDestinations\9CK1Y3IO82MZ7I6MTVLN.temp
    Filesize

    7KB

    MD5

    9e0adf19a3c28b99d4ea5413a9b01efe

    SHA1

    c5289d35cac136f8a65721eb13627b616fb4fc0b

    SHA256

    68956f38475ac0eaecb32261caf7e95f324b8f95fa2b7317acee689e22b712c3

    SHA512

    db455a1261799fd7cd9f55344e658b4ddee1fd9da873f6f74158309a6bae97594afcf351ac5e3d71365e848f2e70e9f0955c97dba1f893b434ad334216846791

    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/616-57-0x0000000000370000-0x000000000038E000-memory.dmp

    Filesize

    120KB

    Download

  • memory/1864-44-0x000000001B710000-0x000000001B9F2000-memory.dmp

    Filesize

    2.9MB

    Download

  • memory/1996-1-0x0000000000D10000-0x0000000000D48000-memory.dmp

    Filesize

    224KB

    Download

  • memory/1996-0-0x000007FEF6033000-0x000007FEF6034000-memory.dmp

    Filesize

    4KB

    Download

  • memory/2240-17-0x0000000002190000-0x00000000021D0000-memory.dmp

    Filesize

    256KB

    Download

  • memory/2240-50-0x0000000002190000-0x00000000021D0000-memory.dmp

    Filesize

    256KB

    Download

  • memory/2436-14-0x00000000008A0000-0x00000000008BE000-memory.dmp

    Filesize

    120KB

    Download

  • memory/2436-49-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2436-16-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp

    Filesize

    9.9MB

    Download

  • memory/2564-32-0x0000000001D10000-0x0000000001D18000-memory.dmp

    Filesize

    32KB

    Download

  • memory/2564-31-0x000000001B750000-0x000000001BA32000-memory.dmp

    Filesize

    2.9MB

    Download

  • memory/2860-25-0x0000000001F70000-0x0000000001F78000-memory.dmp

    Filesize

    32KB

    Download

  • memory/2860-24-0x000000001B640000-0x000000001B922000-memory.dmp

    Filesize

    2.9MB

    Download

  • memory/2892-55-0x0000000000CE0000-0x0000000000CFE000-memory.dmp

    Filesize

    120KB

    Download