Analysis
- user interaction
yes - max time kernel
148s - max time network
126s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/11/2026, 10:57
Static task
static1
Behavioral task
behavioral1
Sample
0543862271.rar
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
0543862271.rar
Resource
win11ltsc2024-20260911-en
Behavioral task
behavioral3
Sample
0543862271.js
Resource
win10v2004-20260911-en
General
- Target 0543862271.js
- Size 2.3MB
- Sample261102-m2pkhag13x
- SHA256 bf01e1afb1c74fa05ad9f0d62b5f331a6e82e344b2b7bbc1a6db1aaece7de7f0
- MD5 a64103c193db5ee1c87a1198decf71fa
- SHA1 e34b93297458514b7dbc04e8d4d2691e15177b39
- SHA512 6296c9d56f0560b0b973911e5bc320d50d84b18de3a126afa156a6377847deb44c2d7ba1939e20fe346e9804d040fa34f733fa819b47ab68839edb63f59264a0
- SSDEEP 49152:wQRz/t4eruubyfOFHlSW3AfCs3v6XX7DG6vOENFy+1ZbOr386yBvoJ0m/CMCCdjV:wQRz/t4ouuOfOFHlSWQfCs3iXX7DGgOF
- TLSH T137B5F9344218EB70BA3D562FC1E76B050A197C2F2E347E3D39B8198D676EB26215D372
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detect Xworm Payload 1 IoCs
resource yara_rule behavioral4/memory/940-154-0x0000000027320000-0x0000000027330000-memory.dmp family_xworm - Executes dropped EXE 1 IoCs
pid Process 940 UUZSSZFNUMCLKDBU.exe - Looks up external IP address via web service 1 TTPs 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 NtSetInformationThreadHideFromDebugger 1 TTPs 2 IoCs
pid Process 940 UUZSSZFNUMCLKDBU.exe 940 UUZSSZFNUMCLKDBU.exe - Command and Scripting Interpreter: JavaScript 1 TTPs
- 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 4520 cmd.exe - Program crash 1 IoCs
pid pid_target Process procid_target 3524 940 WerFault.exe 91 - Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname UUZSSZFNUMCLKDBU.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain UUZSSZFNUMCLKDBU.exe - System Location Discovery: System Language Discovery 1 TTPs 1 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 UUZSSZFNUMCLKDBU.exe - Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{A8CDFF1C-4878-43be-B5FD-F8091C1C60D0}\Instance\ wscript.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{d3162b92-9365-467a-956b-92703aca08af}\Instance\ wscript.exe - NTFS ADS 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Local\Temp\0543862271.js:Zone.Identifier cmd.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 940 UUZSSZFNUMCLKDBU.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4980 wrote to memory of 4520 4980 wscript.exe 89 PID 4980 wrote to memory of 940 4980 wscript.exe 91
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\0543862271.js1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4980 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c echo. > "C:\Users\Admin\AppData\Local\Temp\0543862271.js:Zone.Identifier"2⤵
- Executes a command shell one-liner
- NTFS ADS
PID:4520
-
-
C:\Users\Admin\Documents\UUZSSZFNUMCLKDBU.exe"C:\Users\Admin\Documents\UUZSSZFNUMCLKDBU.exe" C:\Users\Admin\Documents\UBDKLCMUNFZSSZUU2⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:940 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 940 -s 17163⤵
- Program crash
PID:3524
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 940 -ip 9401⤵PID:1752
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2JavaScript
1Windows Command Shell
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\Documents\UBDKLCMUNFZSSZUU
- Size 289KB
- SHA256 842468ebd34efd2370b6861b5084254671438d44baa7f65c8cfd317291606512
- MD5 3a8bf6c2c09dad073189aee8f64e7689
- SHA1 6d2f782636538cddf85c0c40d00d5ad1a5e2a88e
- SHA512 ae80304f6b6655c9d5a2993c815bd91788a9c2a2146d2fb6d9e791cd57d75f75f7247d29781439dba337ee8d89eff1855e8221a80c0987eb45414f46b8f5936c
- SSDEEP 3072:LlbxNJUf4L0u65bfzw9YHLSzyPdSkTNTebMjXtVRcMEmpddCgwvjWbw93j3Wg:lxQ4L0u65I9YHLSAdZNTeqE6wNj3Wg
- TLSH T18A5485C7B0CA29A492A642B1CC670ED771B5D9FA070D16475F68C0B577603BCCBE983A
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\Documents\UUZSSZFNUMCLKDBU.exe
- Size 499KB
- SHA256 d447a06cba8d3dbe80e09d73dd64576836b258961ee0d3ba56cf26cea7962b49
- MD5 7675b38aabebc8427171447edd484b5b
- SHA1 145c72f8acdcd366869f955dffd000d3bc146b6e
- SHA512 bc9bddbee59f165742a3203f9e2ba9de409e66de6334cb352cded84cce3e1074dbd0ac17b29e58c8729906848b64d1486fb8c848ca15422127b2baeb4c5e5dbe
- SSDEEP 12288:HW7YOPcqPqvopYJNWGIbK8AJYlqWuSr7B/Uj:HW7RPcqPqvopYJYK8AyldpUj
- TLSH T176B43AC4BACB08F1E2A355B0C49BDB7F96349A050022D5BAFF5CBD59EC33746092725A
- MD5 SHA1 SHA512 SSDEEP TLSH