Analysis
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max time kernel
293s -
max time network
230s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
31-05-2024 10:24
Behavioral task
behavioral1
Sample
XClient.exe
Resource
win10v2004-20240426-en
General
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Target
XClient.exe
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Size
72KB
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MD5
dab9e10b713779e5a811a1c89ae6252a
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SHA1
fea8c8140c6b13fabdb258acb3a646c1a54e36be
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SHA256
e712b1e3a9313d86fce1ca310401f88e8fcda3c2b65ff9633613018bac09012f
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SHA512
ad6f6b0a0b1ce606964e1fa1ddd3ccef30fa2f90b1af3e57108b7a30aeb43aa02e64b407b519e1463597f4147f639eb1d09d4c0717127da8700d2998929b03fe
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SSDEEP
1536:XdqJfIiYkjEj1xFhI6mX1EgjbDhcb6rOFw2Uy:SlYJBjXkNjbDXOFwHy
Malware Config
Extracted
xworm
isbn-employee.gl.at.ply.gg:4328
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Install_directory
%AppData%
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install_file
XClient.exe
Signatures
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Detect Xworm Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/4612-1-0x0000000000FA0000-0x0000000000FB8000-memory.dmp 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 1980 powershell.exe 1988 powershell.exe 368 powershell.exe 1524 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
XClient.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation XClient.exe -
Drops startup file 2 IoCs
Processes:
XClient.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk XClient.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk XClient.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
XClient.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" XClient.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 12 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 45 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exeXClient.exepid process 1980 powershell.exe 1980 powershell.exe 1988 powershell.exe 1988 powershell.exe 368 powershell.exe 368 powershell.exe 1524 powershell.exe 1524 powershell.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe 4612 XClient.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
XClient.exepowershell.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 4612 XClient.exe Token: SeDebugPrivilege 1980 powershell.exe Token: SeDebugPrivilege 1988 powershell.exe Token: SeDebugPrivilege 368 powershell.exe Token: SeDebugPrivilege 1524 powershell.exe Token: SeDebugPrivilege 4612 XClient.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
XClient.exepid process 4612 XClient.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
XClient.exedescription pid process target process PID 4612 wrote to memory of 1980 4612 XClient.exe powershell.exe PID 4612 wrote to memory of 1980 4612 XClient.exe powershell.exe PID 4612 wrote to memory of 1988 4612 XClient.exe powershell.exe PID 4612 wrote to memory of 1988 4612 XClient.exe powershell.exe PID 4612 wrote to memory of 368 4612 XClient.exe powershell.exe PID 4612 wrote to memory of 368 4612 XClient.exe powershell.exe PID 4612 wrote to memory of 1524 4612 XClient.exe powershell.exe PID 4612 wrote to memory of 1524 4612 XClient.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\XClient.exe"C:\Users\Admin\AppData\Local\Temp\XClient.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:4612 -
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\XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1980
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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 'XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1988
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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\XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:368
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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 'XClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1524
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD5d28a889fd956d5cb3accfbaf1143eb6f
SHA1157ba54b365341f8ff06707d996b3635da8446f7
SHA25621e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA5120b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
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Filesize
944B
MD5f3bc9dee8a80a73a256a69e26fe61c07
SHA1bc546c10ce1b4cb47b89ea60498384f88f96fa5a
SHA2563c7f3194722f46cb07885da576daf720a5133913b3fbce4a3ef8c8040028364d
SHA512be2d861832db826ee67f03e6a9151dc6802481c3b5984ce457e43cebecd162f60460ccf7ac5893169d01eff77e2a863c5e323d68e07f2b1b3d6dab5884f7ac6a
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Filesize
944B
MD5a2c8179aaa149c0b9791b73ce44c04d1
SHA1703361b0d43ec7f669304e7c0ffbbfdeb1e484ff
SHA256c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a
SHA5122e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82