Analysis
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max time kernel
260s -
max time network
266s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
21-06-2024 21:53
Behavioral task
behavioral1
Sample
setup.exe
Resource
win10v2004-20240508-en
General
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Target
setup.exe
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Size
73KB
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MD5
9003126cef8cf36eca17f1e51eaf8394
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SHA1
6f7941dc4c5bb1818a519482537ea231e4ba8ab8
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SHA256
ac30d7a03c46c90f1f8270ac6dc2a7001373b2b16567d7753f174fd33c047ed2
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SHA512
eacfc7a4030cbaab1926d660b5ea2fa69d9ba2e18bb690822bab474b9fb296d49150af25a8565dd51ad3a4d4da648e365610969829835d480fce4e16b0285dac
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SSDEEP
1536:mPN8fc4tabwG764lxyTfogb8cCijEnxH8w6nNOON3c7G:UN8f9abwGLHyZb876qWVNOON6G
Malware Config
Extracted
xworm
sebeee-39917.portmap.io:39917
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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/4060-1-0x00000000008F0000-0x0000000000908000-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 4912 powershell.exe 2000 powershell.exe 3276 powershell.exe 2620 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
setup.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation setup.exe -
Drops startup file 2 IoCs
Processes:
setup.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk setup.exe -
Executes dropped EXE 4 IoCs
Processes:
RuntimeBroker.exeRuntimeBroker.exeRuntimeBroker.exeRuntimeBroker.exepid process 4436 RuntimeBroker.exe 1052 RuntimeBroker.exe 3604 RuntimeBroker.exe 2724 RuntimeBroker.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
setup.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Users\\Admin\\AppData\\Roaming\\RuntimeBroker.exe" setup.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 2 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 9 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exesetup.exepid process 2000 powershell.exe 2000 powershell.exe 3276 powershell.exe 3276 powershell.exe 2620 powershell.exe 2620 powershell.exe 4912 powershell.exe 4912 powershell.exe 4060 setup.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
Processes:
setup.exepowershell.exepowershell.exepowershell.exepowershell.exeRuntimeBroker.exeRuntimeBroker.exeRuntimeBroker.exeRuntimeBroker.exedescription pid process Token: SeDebugPrivilege 4060 setup.exe Token: SeDebugPrivilege 2000 powershell.exe Token: SeDebugPrivilege 3276 powershell.exe Token: SeDebugPrivilege 2620 powershell.exe Token: SeDebugPrivilege 4912 powershell.exe Token: SeDebugPrivilege 4060 setup.exe Token: SeDebugPrivilege 4436 RuntimeBroker.exe Token: SeDebugPrivilege 1052 RuntimeBroker.exe Token: SeDebugPrivilege 3604 RuntimeBroker.exe Token: SeDebugPrivilege 2724 RuntimeBroker.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
setup.exepid process 4060 setup.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
setup.exedescription pid process target process PID 4060 wrote to memory of 2000 4060 setup.exe powershell.exe PID 4060 wrote to memory of 2000 4060 setup.exe powershell.exe PID 4060 wrote to memory of 3276 4060 setup.exe powershell.exe PID 4060 wrote to memory of 3276 4060 setup.exe powershell.exe PID 4060 wrote to memory of 2620 4060 setup.exe powershell.exe PID 4060 wrote to memory of 2620 4060 setup.exe powershell.exe PID 4060 wrote to memory of 4912 4060 setup.exe powershell.exe PID 4060 wrote to memory of 4912 4060 setup.exe powershell.exe PID 4060 wrote to memory of 1740 4060 setup.exe schtasks.exe PID 4060 wrote to memory of 1740 4060 setup.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\setup.exe"C:\Users\Admin\AppData\Local\Temp\setup.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:4060 -
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\setup.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2000
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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 'setup.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3276
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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:2620
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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:4912
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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:1740
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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:4436
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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:1052
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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:3604
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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:2724
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
1Replay Monitor
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Downloads
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD56d42b6da621e8df5674e26b799c8e2aa
SHA1ab3ce1327ea1eeedb987ec823d5e0cb146bafa48
SHA2565ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c
SHA51253faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29
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Filesize
944B
MD565a68df1062af34622552c4f644a5708
SHA16f6ecf7b4b635abb0b132d95dac2759dc14b50af
SHA256718dc2f5f4a6dbb7fab7f3db05bd7f602fb16526caae7084ab46c3ab4e7bad35
SHA5124e460eb566032942547b58411222dd26ae300a95f83cf5ae6df58ebd28594341123611b348bd4031a33bc7f38307d5cb8fb677bba8c896919e3eee677a104d4d
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Filesize
944B
MD592075279f2dbcaa5724ee5a47e49712f
SHA18dd3e2faa8432dde978946ebaf9054f7c6e0b2cb
SHA256fd985ddd090621af25aa77aebff689c95ea7679ff0e81887124b2802ae3e9442
SHA512744c62556233d9872f43ffb5a5a98aee20a44834436306f0a948c8c4072bdb46ef8044616593747edd645caaee60faf8b14fedb2d6df5f6019b5c73357d80d22
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
73KB
MD59003126cef8cf36eca17f1e51eaf8394
SHA16f7941dc4c5bb1818a519482537ea231e4ba8ab8
SHA256ac30d7a03c46c90f1f8270ac6dc2a7001373b2b16567d7753f174fd33c047ed2
SHA512eacfc7a4030cbaab1926d660b5ea2fa69d9ba2e18bb690822bab474b9fb296d49150af25a8565dd51ad3a4d4da648e365610969829835d480fce4e16b0285dac