Analysis
- max time kernel
150s - max time network
133s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
16/09/2026, 16:46
Behavioral task
behavioral1
Sample
XClient.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
XClient.exe
Resource
win11ltsc2024-20260911-en
General
- Target XClient.exe
- Size 30KB
- Sample260916-vae6ratamf
- SHA256 427a4cc7d184449eb70a2c75462b3a142ab718b9d4d22d3f94b8c5923c164b35
- MD5 0a79de74fa4bda262e7d74b8aca27984
- SHA1 bbb6b4163511f81961a499bb1fe44d5575cbcb1b
- SHA512 607887e4b1953fc28b68fa2b7acf79bddb33ca0893c3c08f3a87a9308b1fb74a6a68e4964e290055f228977393fad308e801a0c1ba9374300e31ea3f4bf3686b
- SSDEEP 768:yHZrtxekwo1YETDNAsbBFR9Rl9OqhCb4:WZr6AAsFFR9Rl9OqAc
- TLSH T1FBD24C0877E58327C6EF2FF229B291010375D907D923EF5E4CD885A76F67A8142003EA
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
-
xworm
-
3.0
-
188.52.56.123:5000
-
A9qFI6duEDgQB152
-
install_file
USB.exe
Signatures
- Detect Xworm Payload 1 IoCs
resource yara_rule behavioral2/memory/4696-1-0x0000000000C60000-0x0000000000C6E000-memory.dmp family_xworm - Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Key created \REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Active Setup\Installed Components Explorer.EXE - Disables Task Manager via registry modification
- Executes dropped EXE 8 IoCs
pid Process 5360 auioxr.exe 3440 MBR2.exe 4768 TROLL5.exe 5132 TROLL2.exe 4976 ulhjjn.exe 5036 MatrixMBR.exe 904 GDI.exe 2292 MBR.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysWinHost = "C:\\Users\\Admin\\AppData\\Roaming\\sys_win_host.exe" ulhjjn.exe - Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
flow ioc 2 discord.com 7 discord.com - Looks up external IP address via web service 1 TTPs 4 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 2 api.ipify.org 2 ipapi.co 5 api.ipify.org 6 ipapi.co - Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
description ioc Process File opened for modification \??\PhysicalDrive0 ulhjjn.exe File opened for modification \??\PhysicalDrive0 MBR.exe - Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\System32\MatrixMBR.exe MBR2.exe File created C:\Windows\System32\MatrixMBR.exe MBR2.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 2424 cmd.exe - System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language GDI.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MBR.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language TROLL5.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language TROLL2.exe - Delays execution with timeout.exe 1 IoCs
pid Process 4568 timeout.exe - Modifies registry class 7 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Explorer.EXE Key created \REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-461973139-3212354679-1508698038-1000\{ECE01EF3-7F35-4E45-ADEE-C85398AB70D7} Explorer.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\ Explorer.EXE Key created \REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000_Classes\Local Settings Explorer.EXE Key created \REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell Explorer.EXE Key created \REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Explorer.EXE Set value (data) \REGISTRY\USER\S-1-5-21-461973139-3212354679-1508698038-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Explorer.EXE - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe 4976 ulhjjn.exe - Suspicious use of AdjustPrivilegeToken 12 IoCs
description pid Process Token: SeDebugPrivilege 4696 XClient.exe Token: 33 3652 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 3652 AUDIODG.EXE Token: SeDebugPrivilege 4976 ulhjjn.exe Token: SeShutdownPrivilege 4588 Explorer.EXE Token: SeCreatePagefilePrivilege 4588 Explorer.EXE Token: SeShutdownPrivilege 4588 Explorer.EXE Token: SeCreatePagefilePrivilege 4588 Explorer.EXE Token: SeShutdownPrivilege 4588 Explorer.EXE Token: SeCreatePagefilePrivilege 4588 Explorer.EXE Token: SeShutdownPrivilege 4588 Explorer.EXE Token: SeCreatePagefilePrivilege 4588 Explorer.EXE - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4976 ulhjjn.exe 4588 Explorer.EXE - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4696 wrote to memory of 5360 4696 XClient.exe 89 PID 5360 wrote to memory of 3440 5360 auioxr.exe 90 PID 5360 wrote to memory of 4768 5360 auioxr.exe 91 PID 5360 wrote to memory of 5132 5360 auioxr.exe 92 PID 4696 wrote to memory of 4976 4696 XClient.exe 94 PID 3440 wrote to memory of 5036 3440 MBR2.exe 95 PID 1680 wrote to memory of 4588 1680 userinit.exe 97 PID 5052 wrote to memory of 4288 5052 userinit.exe 99 PID 5036 wrote to memory of 904 5036 MatrixMBR.exe 100 PID 5036 wrote to memory of 2292 5036 MatrixMBR.exe 101 PID 4696 wrote to memory of 2424 4696 XClient.exe 102 PID 2424 wrote to memory of 4568 2424 cmd.exe 104
Processes
-
C:\Users\Admin\AppData\Local\Temp\XClient.exe"C:\Users\Admin\AppData\Local\Temp\XClient.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4696 -
C:\Users\Admin\AppData\Local\Temp\auioxr.exe"C:\Users\Admin\AppData\Local\Temp\auioxr.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:5360 -
C:\Users\Admin\AppData\Local\Temp\MBR2.exe"C:\Users\Admin\AppData\Local\Temp\MBR2.exe"3⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3440 -
C:\Windows\System32\MatrixMBR.exe"C:\Windows\System32\MatrixMBR.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:5036 -
C:\Users\Admin\AppData\Local\Temp\GDI.exe"C:\Users\Admin\AppData\Local\Temp\GDI.exe"5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:904
-
-
C:\Users\Admin\AppData\Local\Temp\MBR.exe"C:\Users\Admin\AppData\Local\Temp\MBR.exe"5⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
PID:2292
-
-
-
-
C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4768
-
-
C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5132
-
-
-
C:\Users\Admin\AppData\Local\Temp\ulhjjn.exe"C:\Users\Admin\AppData\Local\Temp\ulhjjn.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4976
-
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7B4C.tmp.bat""2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:2424 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:4568
-
-
-
C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x00000000000004E0 0x00000000000004D01⤵
- Suspicious use of AdjustPrivilegeToken
PID:3652
-
C:\Windows\system32\userinit.exeC:\Windows\system32\userinit.exe1⤵
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE2⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4588
-
-
C:\Windows\system32\userinit.exeC:\Windows\system32\userinit.exe1⤵
- Suspicious use of WriteProcessMemory
PID:5052 -
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE2⤵PID:4288
-
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\GDI.exe
- Size 11KB
- SHA256 e153def894c867923dd56a7025b7b0b7bd3ee37c801a5957201d39f999bb28bf
- MD5 c08ae6d9c6ecd7e13f827bf68767785f
- SHA1 e71c2ec8d00c1e82b8b07baee0688b0a28604454
- SHA512 c28bbe8abc66ad2433e5a3b93a4601b28225e86cb4bff077fd3224adfa63164bebfa3002a42b1cb4cb3c7ccad0208f8b143b8a17099bea04fcb964e667c7a1c0
- SSDEEP 192:99qzCdTRiOurQItQ6YTkMfTiC96Tp80/Yc/75e:PXdTROQItQTTka2O6Tp3/Yc/g
- TLSH T1B432191197D08276ED320AB278A35742CB77EB57D967DABE348C912BBF732014293361
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\MBR.exe
- Size 93KB
- SHA256 acddde9514e3b9d5c40b3d1750af5f4187c99f8987b027d6da44fb6bcf79b3ca
- MD5 d2fc66cf781a2497fceb4041a93cc676
- SHA1 480b1aa31b0b31fc0e0833afbba06533ab9a90ee
- SHA512 6c4cb42f786301be7614d4cb0b32601fea151351b0877e2371632435eb2c54bd4cd04d6b23bf4f49017ccaf679331162aac7329a1ed2409e3c2e02d0326e3487
- SSDEEP 1536:CmwoXyoci5SjY3SaRO7IPqifrJxdhGZCJjmGasWhQcdQ5/hO2oFaLJ:Tv5MYRIMPqiTJx+ZqreRQ5/hXoM9
- TLSH T10A936C43B5D28CB2E5B21D311875CAA15A2FB9214E348E6B6794137E1F340D09E36FB7
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\MBR2.exe
- Size 205KB
- SHA256 c22e2419f04fe03a92255a139ca8814697962e86d191a1d4171788fd0c903f68
- MD5 3dc0e225f886bae3b655cd9d738ed32f
- SHA1 abda127fd477bd9d051cd57b16ac13f44030a9ae
- SHA512 c8a6c0bfa96defde6f83d847583ff2ec065a43f80f9886259a2d1fe7df306ef6ed7aeed61b7dcf0bdc111fc67419eb66cf1ca44e831711dd4ea7d25ed9aed09b
- SSDEEP 3072:VQKrqi3qqKcjzksuicc/9Ic9hwBjQV8xWegUqijR4uTkEJxIiLt2p/YkMhapu4n4:Vruc/iuwBMV8x5gUqMR4aMiLcpj84
- TLSH T1D92423001754132EFB59C0F6019712B381EBD3AE9E1B9489F3F9921BDB6B10ED91747A
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\TROLL2.exe
- Size 105KB
- SHA256 dcdf5140bc51db27f3aec80ae9a66a57aad446a2522904d288770e8d8cde8cee
- MD5 52a2a5517deb1a06896891a35299ce20
- SHA1 badcbdfef312bd71de997a7416ee20cee5d66af6
- SHA512 7cb0de412c0508f5af522aeaf3731dda418f72f7cae8dd3f21b34d5cdbc08f9dea8699d59878610496c68d687227a0269739221490d70d03b8e4b84dfd29d5f1
- SSDEEP 1536:A85iT6EcrYTyyAmOvu3yUyJCbT4UK7BIR:IGEcxyAF64A
- TLSH T1D6B3F6D7BE8AADA3F925133989F98319033DF7C01B828B171D31993A17176A17FC5246
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\TROLL5.exe
- Size 712KB
- SHA256 79f00c7dab0891824136539fabd542c74e26cbed94b9add3f1aa7f793d653de6
- MD5 542a4e400ff233b21a1a3c27751ac783
- SHA1 000a67f00b0003531d65a6ed6f16488ae5dcd0fe
- SHA512 8335118ca0c268635d9495b331fb65800a32a0631f132cd34ce84ca3b523d0a9e23eee6d76539d0c81d86fda534da56c936914012d8bad35040b15cc8caaf645
- SSDEEP 12288:cF04yK+m1Vd5IfbJQWYzBVXqKWOF+LmguP/WMYZCubHKG91MiYwd:Z4yedWfEHnWbLunWMYUaHzLY2
- TLSH T1BDF423738484A51CD6EFCE33A0F1FC3463BAFE2761198C112294EDD46AA715097CBB65
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\auioxr.exe
- Size 921KB
- SHA256 deaf30953149d0bef45a11bd89f4ef69f77115e50380c7ef3607c37ff4f40a1d
- MD5 03c3e9290329eec39c6543006f9ac9f1
- SHA1 78e676fc850fb5d4e1c75b813f15b841fdf7705d
- SHA512 b2c5b1b060a0349bc92cc5a8b286f149b5cf6b40264e7b613b76c911e4acc6352ed0fdd9d945fae9c025963cae02f3f2cbef8a62bff844764a66481119c6321d
- SSDEEP 24576:QCFZOZHLhrN+f4SULfWyBPzB8JAk4cQATg:1F+LL+fIWybB8
- TLSH T13B15239832772A1FCCE72737E5E739A463AE323D0937229D04A5F37D1E415C05726AA2
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\tmp7B4C.tmp.bat
- Size 159B
- SHA256 070c75f29228ed5b3e40066396037162db249451776691666ae0502cef8c8463
- MD5 0ab14d06e2977fa5b5ee39a2e7bc80b8
- SHA1 3e9f0edb85ddd8aff283e999629de809a77cfe3b
- SHA512 9274ec26dff72eb99795c757b72e88352aabe8a2b84d7cd211f5949b8dadae33d8c8aea18c6644ac37e319308abaaf6604ca4fa3a8c111728dce7faae52b697c
- TLSH T117C08C4025CAFA1A298A242705B6D08EE1765C1E2E41AB909368850CA88045CE9B8345
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\ulhjjn.exe
- Size 4.4MB
- SHA256 fc1d570bcc04951b6b4dc2767d73469f67ef701eadcecdd2522915aef50c7169
- MD5 cd279dcc8fc14d390dd0df404def40e8
- SHA1 780c6ed1d62f55dfed413628e0113d448968f1f9
- SHA512 be061ca9855777f30a1083650daa72c6229b0f6efd4646dd1f5299346a4765b722e27e2de857ef4a34db02c6a4e21232a33ad1a495e88614cba465fa74b05b3e
- SSDEEP 24576:xduDmDs2fTgsVFL5lI+aceov+cl7+JVdf8zdhQR9SNUaEDkRZuWKOFngdq7n3Hz1:xQmDsKgsVFLLkKudf19DpObn3nFkW7
- TLSH T1D5264A3439EA5029B2B3EF695FE4B49ADA6FB3733B07645D10A1038A4723A41DDC163D
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\System32\MatrixMBR.exe
- Size 250KB
- SHA256 339fe94164952a8454e6ec5fc75e2c38baade2c14b231e47bf41989ffbb55ee4
- MD5 24c441662c09b94e14a4096a8e59c316
- SHA1 11576cad137bd8ed76efecd711c0390fe5c85292
- SHA512 7f6ca1366733c5fb4925001c0846510732031a9e5f1b16291ff596187c20a88f41193389cedcb73e3928c318fc972be4f03e3cb71f1487c34642897ff9a2b590
- SSDEEP 6144:XGaiVa9WL/GgkszuMO1yV8xTgUqMRQaMiBcxj8:Waisszux1yGRLHBo
- TLSH T1FD4402053F44A465D3689BB08AF3E2A782B8FD396C02D95BFD84775F2E37D0E9801265
- MD5 SHA1 SHA512 SSDEEP TLSH