Analysis
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max time kernel
66s -
max time network
70s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
21-06-2024 16:17
Behavioral task
behavioral1
Sample
EBCSetup.exe
Resource
win10v2004-20240611-en
General
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Target
EBCSetup.exe
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Size
70KB
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MD5
97566a48f5b6edfd5871ffddba03bbcf
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SHA1
af2ea70e9126b61de4a00d07d66c9d88ea0141a3
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SHA256
2e56b940cbb34c5271e8929f64a5632701dfefb09ba311bcac36b2ac0835babd
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SHA512
6a67ab96bc9cd9cd0bc64fb49ea5d441ca36678b2b6ae3822939f5c20613e08e3d8a89dd051d0209044c261120fccde56dc352fe2c180dcfce25d7a97ac807ff
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SSDEEP
1536:+cYgFsLSD/LW64M/dxKebguogieuG+GrV6GlwOaQUi:+FU9bL5/dxKebguw1G7lwOaJi
Malware Config
Extracted
xworm
bulletingmarrano-44370.portmap.io:44370:3452
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Install_directory
%AppData%
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install_file
RuntimeBroker.exe
Signatures
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Detect Xworm Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/4556-1-0x0000000000D90000-0x0000000000DA8000-memory.dmp family_xworm C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe 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.
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepid process 680 powershell.exe 840 powershell.exe 3328 powershell.exe 3208 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
EBCSetup.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation EBCSetup.exe -
Drops startup file 2 IoCs
Processes:
EBCSetup.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk EBCSetup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk EBCSetup.exe -
Executes dropped EXE 1 IoCs
Processes:
RuntimeBroker.exepid process 1404 RuntimeBroker.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
EBCSetup.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Users\\Admin\\AppData\\Roaming\\RuntimeBroker.exe" EBCSetup.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 29 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
Processes:
taskmgr.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 44 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exeEBCSetup.exetaskmgr.exepid process 680 powershell.exe 680 powershell.exe 840 powershell.exe 840 powershell.exe 3328 powershell.exe 3328 powershell.exe 3208 powershell.exe 3208 powershell.exe 4556 EBCSetup.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 12 IoCs
Processes:
EBCSetup.exepowershell.exepowershell.exepowershell.exepowershell.exetaskmgr.exeRuntimeBroker.exedescription pid process Token: SeDebugPrivilege 4556 EBCSetup.exe Token: SeDebugPrivilege 680 powershell.exe Token: SeDebugPrivilege 840 powershell.exe Token: SeDebugPrivilege 3328 powershell.exe Token: SeDebugPrivilege 3208 powershell.exe Token: SeDebugPrivilege 4556 EBCSetup.exe Token: SeDebugPrivilege 1784 taskmgr.exe Token: SeSystemProfilePrivilege 1784 taskmgr.exe Token: SeCreateGlobalPrivilege 1784 taskmgr.exe Token: SeDebugPrivilege 1404 RuntimeBroker.exe Token: 33 1784 taskmgr.exe Token: SeIncBasePriorityPrivilege 1784 taskmgr.exe -
Suspicious use of FindShellTrayWindow 62 IoCs
Processes:
taskmgr.exepid process 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe -
Suspicious use of SendNotifyMessage 61 IoCs
Processes:
taskmgr.exepid process 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe 1784 taskmgr.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
EBCSetup.exepid process 4556 EBCSetup.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
EBCSetup.exedescription pid process target process PID 4556 wrote to memory of 680 4556 EBCSetup.exe powershell.exe PID 4556 wrote to memory of 680 4556 EBCSetup.exe powershell.exe PID 4556 wrote to memory of 840 4556 EBCSetup.exe powershell.exe PID 4556 wrote to memory of 840 4556 EBCSetup.exe powershell.exe PID 4556 wrote to memory of 3328 4556 EBCSetup.exe powershell.exe PID 4556 wrote to memory of 3328 4556 EBCSetup.exe powershell.exe PID 4556 wrote to memory of 3208 4556 EBCSetup.exe powershell.exe PID 4556 wrote to memory of 3208 4556 EBCSetup.exe powershell.exe PID 4556 wrote to memory of 1236 4556 EBCSetup.exe schtasks.exe PID 4556 wrote to memory of 1236 4556 EBCSetup.exe schtasks.exe -
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
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C:\Users\Admin\AppData\Local\Temp\EBCSetup.exe"C:\Users\Admin\AppData\Local\Temp\EBCSetup.exe"1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4556 -
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\Local\Temp\EBCSetup.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:680
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'EBCSetup.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:840
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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\RuntimeBroker.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3328
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3208
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RuntimeBroker" /tr "C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"2⤵
- Scheduled Task/Job: Scheduled Task
PID:1236
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1784
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C:\Users\Admin\AppData\Roaming\RuntimeBroker.exeC:\Users\Admin\AppData\Roaming\RuntimeBroker.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1404
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD577d622bb1a5b250869a3238b9bc1402b
SHA1d47f4003c2554b9dfc4c16f22460b331886b191b
SHA256f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
SHA512d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
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Filesize
944B
MD510890cda4b6eab618e926c4118ab0647
SHA11e1d63b73a0e6c7575f458b3c7917a9ce5ba776d
SHA25600f8a035324d39bd62e6dee5e1b480069015471c487ebee4479e6990ea9ddb14
SHA512a2ee84006c24a36f25e0bca0772430d64e3791f233da916aecdeae6712763e77d55bbbd00dc8f6b2b3887f3c26ab3980b96c5f46cc823e81e28abbbc5fc78221
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Filesize
944B
MD5e5663972c1caaba7088048911c758bf3
SHA13462dea0f9c2c16a9c3afdaef8bbb1f753c1c198
SHA2569f7f29a4696876cadca3f14d7e43f9ede0c97fd64be3f5d94bda49a91b6a419e
SHA512ff4e72c46cf083de62baa2ce2661555dd91b5f144294015f7b262fd4500cb67fe80e1871a82da63b607e3e9cef401f4b73c587bf1134637881ecad51aad1eddc
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
803B
MD5360965f6aed8594fc3bb587a16c636b5
SHA18eb91a711066040392759a51128793b9ccd1f90f
SHA256d6d50ea301a29a16266ef9f5edec303e57f00e2fb64e57b6fa1fe2348963bf78
SHA5122842fb8ada7ba43e3829c7151d50d115697822f4ce4bbc6cfce06a04644b1d3c444a6ddb800f84c27394ce7fea8daa33f7036197361de3dfd5c3819470615c7a
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Filesize
70KB
MD597566a48f5b6edfd5871ffddba03bbcf
SHA1af2ea70e9126b61de4a00d07d66c9d88ea0141a3
SHA2562e56b940cbb34c5271e8929f64a5632701dfefb09ba311bcac36b2ac0835babd
SHA5126a67ab96bc9cd9cd0bc64fb49ea5d441ca36678b2b6ae3822939f5c20613e08e3d8a89dd051d0209044c261120fccde56dc352fe2c180dcfce25d7a97ac807ff