xworm | b7f0df0178f49612192f96821876d7b1de06e3d7813e79527df9ce85e56e903b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
23/05/2026, 04:16

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General

Target
2026-05-23_f4402ee29cea3b79688eee086cf8422c_conti.exe
Size 59KB
Sample260523-ev5ddacx8l
SHA256 b7f0df0178f49612192f96821876d7b1de06e3d7813e79527df9ce85e56e903b
MD5 f4402ee29cea3b79688eee086cf8422c
SHA1 e30aeacfb079729df1d3211e5e212008926987f0
SHA512 baa997c287816ebd119ad7cc542ae2e02621a437954d6f0c8bb8a0ecee9770427826e0bbb7867ad0096bacd5523e5164cbc860307f6424342a6f1a87d249c559
SSDEEP 1536:e0hQjBUcfVX0uXKesrFcR7rhr9ZgzprAW:jhQjBUITXHqF63bZQp
TLSH
T17843F0E7A5FDB0BCC052D63D0C26238DA333F17F089E634A595422EB0E69B64AD37611
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

xworm rat trojan upx

Malware Config

Extracted

Family

xworm

Version

XWorm V5.6

nightfall-59475.portmap.host:4
10.9.222.222:4
31.57.97.169:4

Attributes

Install_directory
%Temp%
install_file
ShellHost.exe
localhost
127.0.0.1

Signatures

Family: Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2340-1-0x00007FF6F0920000-0x00007FF6F093F000-memory.dmp	family_xworm
behavioral1/files/0x00080000000242f0-3.dat	family_xworm
behavioral1/memory/536-5-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm

Detects Windows executables referencing non-Windows User-Agents 3 IoCs

resource	yara_rule
behavioral1/memory/2340-1-0x00007FF6F0920000-0x00007FF6F093F000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x00080000000242f0-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/536-5-0x0000000000400000-0x0000000000416000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral1/memory/2340-1-0x00007FF6F0920000-0x00007FF6F093F000-memory.dmp	UPX

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ShellHost.lnk	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ShellHost.lnk	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
536	svchost.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2340-1-0x00007FF6F0920000-0x00007FF6F093F000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	536	svchost.exe
Token: SeDebugPrivilege	536	svchost.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 536	2340	2026-05-23_f4402ee29cea3b79688eee086cf8422c_conti.exe	87

C:\Users\Admin\AppData\Local\Temp\2026-05-23_f4402ee29cea3b79688eee086cf8422c_conti.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-23_f4402ee29cea3b79688eee086cf8422c_conti.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2340
- C:\ProgramData\WindowsUpdate\svchost.exe
  "C:\ProgramData\WindowsUpdate\svchost.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:536

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

svchost.exe

Path C:\ProgramData\WindowsUpdate\svchost.exe
Size 66KB
SHA256 83c6dd2dc54900d749a9903e5e7776e547fd9f517d7a12a8e29ca63a31ac3960
MD5 58d8e590465320689826452bae138588
SHA1 4a121310ac0853188447252fb98568b029444e8d
SHA512 97b41d52eed49b693eca9fe7606f0c49b9f41b4f45d741b7d8db168f216d1063bd02a7790c2ec54135120d21b550d235eae77590d7f6ba18628720d1d65e2ac5
SSDEEP 1536:ZGwWvclhlYHokHugPjxi16kbeZiO2RpvQkQOdtf60nFt:OK+NPjwkkbe38hQObf9Ft
TLSH
T107636C187BE10125F1FFAFF46DE17266CA79F3222913965F14C901860613ACACE926F9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/536-5-0x0000000000400000-0x0000000000416000-memory.dmp

Download

memory/2340-1-0x00007FF6F0920000-0x00007FF6F093F000-memory.dmp