Analysis
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max time kernel
45s -
max time network
47s -
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 20:49
Behavioral task
behavioral1
Sample
Xworm 5.6.exe
Resource
win10v2004-20240508-en
General
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Target
Xworm 5.6.exe
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Size
62KB
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MD5
3e4d628210b6f2c3a96092203ea5c2eb
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SHA1
6fd276cca9cb5e1e9c19a0b2f6026515ec6f1b0e
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SHA256
5175b805ea8db533ac0b0153899804be3dd8b5151185ef5ef4614ce01f8acbba
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SHA512
626ac7fe79f1b0dc5e8295831ad068cdef9d763ed2aeddaeb38d1de9701c0b4b04931dc2c98d4eeef89246c61dc06d8a3d81248f3eeddfdf8d9ce0db70e72b66
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SSDEEP
1536:6V+SsoFh8ikwJgL62SiZj4GbXQdFlCH6EEg66iObIOD:6bf5RJP2zZbbAd5WiObzD
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/4704-1-0x00000000003A0000-0x00000000003B6000-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 3620 powershell.exe 4540 powershell.exe 1796 powershell.exe 1932 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Xworm 5.6.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation Xworm 5.6.exe -
Drops startup file 2 IoCs
Processes:
Xworm 5.6.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk Xworm 5.6.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk Xworm 5.6.exe -
Executes dropped EXE 1 IoCs
Processes:
RuntimeBroker.exepid process 4992 RuntimeBroker.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Xworm 5.6.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Users\\Admin\\AppData\\Roaming\\RuntimeBroker.exe" Xworm 5.6.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 3 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.exeXworm 5.6.exepid process 1796 powershell.exe 1796 powershell.exe 1932 powershell.exe 1932 powershell.exe 3620 powershell.exe 3620 powershell.exe 4540 powershell.exe 4540 powershell.exe 4704 Xworm 5.6.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
Processes:
Xworm 5.6.exepowershell.exepowershell.exepowershell.exepowershell.exeRuntimeBroker.exedescription pid process Token: SeDebugPrivilege 4704 Xworm 5.6.exe Token: SeDebugPrivilege 1796 powershell.exe Token: SeDebugPrivilege 1932 powershell.exe Token: SeDebugPrivilege 3620 powershell.exe Token: SeDebugPrivilege 4540 powershell.exe Token: SeDebugPrivilege 4704 Xworm 5.6.exe Token: SeDebugPrivilege 4992 RuntimeBroker.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Xworm 5.6.exepid process 4704 Xworm 5.6.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
Xworm 5.6.exedescription pid process target process PID 4704 wrote to memory of 1796 4704 Xworm 5.6.exe powershell.exe PID 4704 wrote to memory of 1796 4704 Xworm 5.6.exe powershell.exe PID 4704 wrote to memory of 1932 4704 Xworm 5.6.exe powershell.exe PID 4704 wrote to memory of 1932 4704 Xworm 5.6.exe powershell.exe PID 4704 wrote to memory of 3620 4704 Xworm 5.6.exe powershell.exe PID 4704 wrote to memory of 3620 4704 Xworm 5.6.exe powershell.exe PID 4704 wrote to memory of 4540 4704 Xworm 5.6.exe powershell.exe PID 4704 wrote to memory of 4540 4704 Xworm 5.6.exe powershell.exe PID 4704 wrote to memory of 4636 4704 Xworm 5.6.exe schtasks.exe PID 4704 wrote to memory of 4636 4704 Xworm 5.6.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\Xworm 5.6.exe"C:\Users\Admin\AppData\Local\Temp\Xworm 5.6.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:4704 -
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\Xworm 5.6.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1796
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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 'Xworm 5.6.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1932
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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:3620
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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:4540
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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:4636
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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:4992
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
Loading Replay Monitor...
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
MD5aeceee3981c528bdc5e1c635b65d223d
SHA1de9939ed37edca6772f5cdd29f6a973b36b7d31b
SHA256b99f3c778a047e0348c92c16e0419fa29418d10d0fec61ad8283e92a094a2b32
SHA512df48285f38e9284efdbd9f8d99e2e94a46fb5465953421ab88497b73ae06895b98ea5c98796560810a6f342c31a9112ea87e03cd3e267fd8518d7585f492a8fb
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Filesize
944B
MD5b35b4801db0e259adf5d5a3acfa121f9
SHA16ad341fd89be032a0ef605e053aa6bcf831e069a
SHA25699f45b5ef6194ea0456fb0674771b57e3b6522f904ddc97e25d2138241075465
SHA512406a7c391360b7cec90ac7df3299c516ebfa1acf90ce8383efb14baaead61585823b7b2377aa83f84c0739c9411ca079e494a8f7269d92d5cc5abfcd10a50a63
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
62KB
MD53e4d628210b6f2c3a96092203ea5c2eb
SHA16fd276cca9cb5e1e9c19a0b2f6026515ec6f1b0e
SHA2565175b805ea8db533ac0b0153899804be3dd8b5151185ef5ef4614ce01f8acbba
SHA512626ac7fe79f1b0dc5e8295831ad068cdef9d763ed2aeddaeb38d1de9701c0b4b04931dc2c98d4eeef89246c61dc06d8a3d81248f3eeddfdf8d9ce0db70e72b66