xworm | e53bd0b8797b8c0cc32875dba3469b938eb8d1c3812b2829378cdb7d40b62654

Analysis

max time kernel
147s
max time network
156s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250113-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
25-01-2025 07:48

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General

Target

XClient (1).exe
Size

41KB
MD5

8ac12cc24b5ac76188fe9612dc51777e
SHA1

0c0dddf34dbf7b95e82c58fdb7cfabb80db90430
SHA256

e53bd0b8797b8c0cc32875dba3469b938eb8d1c3812b2829378cdb7d40b62654
SHA512

02c4abdc825b0d3b9a88a1d66232d6f42497b7d83c6bfc473df8efbc0350371653d3ce220409aa5968cf71396ec230dea52e3793085d1f06d2338e4360c8bc93
SSDEEP

768:LrJDweBDuOkScrbsN/x6WECAr43MkfJF5Pa9p+U6iOwhF3/ibK:pDwewicrbsN/YDRr4RF49IU6iOwv6G

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

57.128.132.221:7000

Mutex

A0pVR4huor1J3yZ3

Attributes

Install_directory
%AppData%
install_file
Win32runtime.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral4/memory/4916-1-0x0000000000450000-0x0000000000460000-memory.dmp	family_xworm
behavioral4/files/0x0029000000046278-61.dat	family_xworm

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

execution

PowerShell

T1059.001

pid	Process
3948	powershell.exe
3392	powershell.exe
2256	powershell.exe
1192	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3454535599-122122096-1812617400-1000\Control Panel\International\Geo\Nation	XClient (1).exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Win32runtime.lnk	XClient (1).exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Win32runtime.lnk	XClient (1).exe

Executes dropped EXE 2 IoCs

pid	Process
3656	Win32runtime.exe
3044	Win32runtime.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3454535599-122122096-1812617400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win32runtime = "C:\\Users\\Admin\\AppData\\Roaming\\Win32runtime.exe"	XClient (1).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
18	ip-api.com

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

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3948	powershell.exe
3948	powershell.exe
3392	powershell.exe
3392	powershell.exe
2256	powershell.exe
2256	powershell.exe
1192	powershell.exe
1192	powershell.exe
4916	XClient (1).exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	XClient (1).exe
Token: SeDebugPrivilege	3948	powershell.exe
Token: SeIncreaseQuotaPrivilege	3948	powershell.exe
Token: SeSecurityPrivilege	3948	powershell.exe
Token: SeTakeOwnershipPrivilege	3948	powershell.exe
Token: SeLoadDriverPrivilege	3948	powershell.exe
Token: SeSystemProfilePrivilege	3948	powershell.exe
Token: SeSystemtimePrivilege	3948	powershell.exe
Token: SeProfSingleProcessPrivilege	3948	powershell.exe
Token: SeIncBasePriorityPrivilege	3948	powershell.exe
Token: SeCreatePagefilePrivilege	3948	powershell.exe
Token: SeBackupPrivilege	3948	powershell.exe
Token: SeRestorePrivilege	3948	powershell.exe
Token: SeShutdownPrivilege	3948	powershell.exe
Token: SeDebugPrivilege	3948	powershell.exe
Token: SeSystemEnvironmentPrivilege	3948	powershell.exe
Token: SeRemoteShutdownPrivilege	3948	powershell.exe
Token: SeUndockPrivilege	3948	powershell.exe
Token: SeManageVolumePrivilege	3948	powershell.exe
Token: 33	3948	powershell.exe
Token: 34	3948	powershell.exe
Token: 35	3948	powershell.exe
Token: 36	3948	powershell.exe
Token: SeDebugPrivilege	3392	powershell.exe
Token: SeIncreaseQuotaPrivilege	3392	powershell.exe
Token: SeSecurityPrivilege	3392	powershell.exe
Token: SeTakeOwnershipPrivilege	3392	powershell.exe
Token: SeLoadDriverPrivilege	3392	powershell.exe
Token: SeSystemProfilePrivilege	3392	powershell.exe
Token: SeSystemtimePrivilege	3392	powershell.exe
Token: SeProfSingleProcessPrivilege	3392	powershell.exe
Token: SeIncBasePriorityPrivilege	3392	powershell.exe
Token: SeCreatePagefilePrivilege	3392	powershell.exe
Token: SeBackupPrivilege	3392	powershell.exe
Token: SeRestorePrivilege	3392	powershell.exe
Token: SeShutdownPrivilege	3392	powershell.exe
Token: SeDebugPrivilege	3392	powershell.exe
Token: SeSystemEnvironmentPrivilege	3392	powershell.exe
Token: SeRemoteShutdownPrivilege	3392	powershell.exe
Token: SeUndockPrivilege	3392	powershell.exe
Token: SeManageVolumePrivilege	3392	powershell.exe
Token: 33	3392	powershell.exe
Token: 34	3392	powershell.exe
Token: 35	3392	powershell.exe
Token: 36	3392	powershell.exe
Token: SeDebugPrivilege	2256	powershell.exe
Token: SeIncreaseQuotaPrivilege	2256	powershell.exe
Token: SeSecurityPrivilege	2256	powershell.exe
Token: SeTakeOwnershipPrivilege	2256	powershell.exe
Token: SeLoadDriverPrivilege	2256	powershell.exe
Token: SeSystemProfilePrivilege	2256	powershell.exe
Token: SeSystemtimePrivilege	2256	powershell.exe
Token: SeProfSingleProcessPrivilege	2256	powershell.exe
Token: SeIncBasePriorityPrivilege	2256	powershell.exe
Token: SeCreatePagefilePrivilege	2256	powershell.exe
Token: SeBackupPrivilege	2256	powershell.exe
Token: SeRestorePrivilege	2256	powershell.exe
Token: SeShutdownPrivilege	2256	powershell.exe
Token: SeDebugPrivilege	2256	powershell.exe
Token: SeSystemEnvironmentPrivilege	2256	powershell.exe
Token: SeRemoteShutdownPrivilege	2256	powershell.exe
Token: SeUndockPrivilege	2256	powershell.exe
Token: SeManageVolumePrivilege	2256	powershell.exe
Token: 33	2256	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4916	XClient (1).exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 3948	4916	XClient (1).exe	90
PID 4916 wrote to memory of 3948	4916	XClient (1).exe	90
PID 4916 wrote to memory of 3392	4916	XClient (1).exe	93
PID 4916 wrote to memory of 3392	4916	XClient (1).exe	93
PID 4916 wrote to memory of 2256	4916	XClient (1).exe	96
PID 4916 wrote to memory of 2256	4916	XClient (1).exe	96
PID 4916 wrote to memory of 1192	4916	XClient (1).exe	98
PID 4916 wrote to memory of 1192	4916	XClient (1).exe	98
PID 4916 wrote to memory of 3020	4916	XClient (1).exe	100
PID 4916 wrote to memory of 3020	4916	XClient (1).exe	100

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.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XClient (1).exe
"C:\Users\Admin\AppData\Local\Temp\XClient (1).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:4916
- 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 (1).exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3948
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient (1).exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3392
- 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\Win32runtime.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2256
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Win32runtime.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1192
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Win32runtime" /tr "C:\Users\Admin\AppData\Roaming\Win32runtime.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3020

C:\Users\Admin\AppData\Roaming\Win32runtime.exe
"C:\Users\Admin\AppData\Roaming\Win32runtime.exe"
1⤵
- Executes dropped EXE
PID:3656

C:\Users\Admin\AppData\Roaming\Win32runtime.exe
"C:\Users\Admin\AppData\Roaming\Win32runtime.exe"
1⤵
- Executes dropped EXE
PID:3044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Win32runtime.exe.log

Filesize
654B

MD5
11c6e74f0561678d2cf7fc075a6cc00c

SHA1
535ee79ba978554abcb98c566235805e7ea18490

SHA256
d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63

SHA512
32c63d67bf512b42e7f57f71287b354200126cb417ef9d869c72e0b9388a7c2f5e3b61f303f1353baa1bf482d0f17e06e23c9f50b2f1babd4d958b6da19c40b0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
90d696d6a8ab185c1546b111fa208281

SHA1
b0ce1efde1dad3d65f7a78d1f6467d8a1090d659

SHA256
78497ed2c4ccac6e870afc80224724f45a7356bde55580a5c6ea52ef5079a3f4

SHA512
0a19628ae31ec31f382b3fd430c205a39985730e12c608b66b83ee4826e3f3fc9f4a034e03f38ac5260defdf805b927528ffca1a2ccdd59d9bfe05822923c4ba

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
76c3fc9e3919cb505db49acc0aa869cc

SHA1
b699a9f67239562db5c2ee92b2f1e47b856ce0c7

SHA256
a9929c29a44ab62c90130f1f933e8bef92ff69601eca2828eb602ff505ae8a62

SHA512
fcf34a620864669635f82874b30569c581c4848db70a52704cab8b29774984e7f077ffd073d85082dbed14c245abafa8215720d002150ee0d59d1e8d0d2ea915

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
dc6ab0514f08435c8fb2389b186ee68b

SHA1
e6a90d65e64c6484a64653187952768cc1fc2ddd

SHA256
2ad5a5e7208b7c928cfe9b10d29879cd97c7c3d11adcbb51e30432865d94cebb

SHA512
e3455dd0b1f9e1a54f28a288e1de6fb832b9252ca2fc9578a3ffafdb3bc4b7b9e3aaa0e16da8266e80998978a55227537881bf247f17976992ba4fad6712102f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5mas52kw.wub.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Win32runtime.exe

Filesize
41KB

MD5
8ac12cc24b5ac76188fe9612dc51777e

SHA1
0c0dddf34dbf7b95e82c58fdb7cfabb80db90430

SHA256
e53bd0b8797b8c0cc32875dba3469b938eb8d1c3812b2829378cdb7d40b62654

SHA512
02c4abdc825b0d3b9a88a1d66232d6f42497b7d83c6bfc473df8efbc0350371653d3ce220409aa5968cf71396ec230dea52e3793085d1f06d2338e4360c8bc93

Download Submit
memory/3948-22-0x00007FFC3DC30000-0x00007FFC3E6F2000-memory.dmp

Filesize
10.8MB

Download
memory/3948-7-0x00007FFC3DC30000-0x00007FFC3E6F2000-memory.dmp

Filesize
10.8MB

Download
memory/3948-17-0x00000216DD970000-0x00000216DD992000-memory.dmp

Filesize
136KB

Download
memory/3948-18-0x00007FFC3DC30000-0x00007FFC3E6F2000-memory.dmp

Filesize
10.8MB

Download
memory/3948-19-0x00007FFC3DC30000-0x00007FFC3E6F2000-memory.dmp

Filesize
10.8MB

Download
memory/3948-6-0x00007FFC3DC30000-0x00007FFC3E6F2000-memory.dmp

Filesize
10.8MB

Download
memory/3948-5-0x00007FFC3DC30000-0x00007FFC3E6F2000-memory.dmp

Filesize
10.8MB

Download
memory/4916-0-0x00007FFC3DC33000-0x00007FFC3DC35000-memory.dmp

Filesize
8KB

Download
memory/4916-4-0x00007FFC3DC30000-0x00007FFC3E6F2000-memory.dmp

Filesize
10.8MB

Download
memory/4916-3-0x00007FFC3DC33000-0x00007FFC3DC35000-memory.dmp

Filesize
8KB

Download
memory/4916-2-0x00007FFC3DC30000-0x00007FFC3E6F2000-memory.dmp

Filesize
10.8MB

Download
memory/4916-1-0x0000000000450000-0x0000000000460000-memory.dmp

Filesize
64KB

Download