xworm | e19bbde43b68c0b2ab107adde791a74bdfd078fc6ac88df307e6a0cbee56b1da

Analysis

max time kernel
130s
max time network
147s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
03-12-2024 16:30

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General

Target

XClient.exe
Size

39KB
MD5

40fd2932a64ccfd8ad76a8ce81d557d5
SHA1

3e8f86b139ffb80a5425140d5ea08e149fae1b08
SHA256

e19bbde43b68c0b2ab107adde791a74bdfd078fc6ac88df307e6a0cbee56b1da
SHA512

35ebaf198dcc9071f163d89d0913fe1c0840ce4b28c6b9b15ab5710abb60c061c09e788565a6921c04a9975a7dd187fcdc4d03b6fc51dd09f944573dd3287679
SSDEEP

768:ZBj78fx6MooHKBjJfDUbtRFH9OKi6BOMh6L05jX:b78p6MLqBjJfIbDFH93i6BOMskjX

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

127.0.0.1:14333

previous-contests.gl.at.ply.gg:14333

Mutex

GH9VJU0DztsBgWNu

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4480-1-0x0000000000CE0000-0x0000000000CF0000-memory.dmp	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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
4832	powershell.exe
4360	powershell.exe
3620	powershell.exe
4004	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

Processes:

XClient.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4074627901-37362009-3519777259-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

Processes:

XClient.exe

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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
14	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid	Process
4004	powershell.exe
4004	powershell.exe
4832	powershell.exe
4832	powershell.exe
4360	powershell.exe
4360	powershell.exe
3620	powershell.exe
3620	powershell.exe
4480	XClient.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	4480	XClient.exe
Token: SeDebugPrivilege	4004	powershell.exe
Token: SeIncreaseQuotaPrivilege	4004	powershell.exe
Token: SeSecurityPrivilege	4004	powershell.exe
Token: SeTakeOwnershipPrivilege	4004	powershell.exe
Token: SeLoadDriverPrivilege	4004	powershell.exe
Token: SeSystemProfilePrivilege	4004	powershell.exe
Token: SeSystemtimePrivilege	4004	powershell.exe
Token: SeProfSingleProcessPrivilege	4004	powershell.exe
Token: SeIncBasePriorityPrivilege	4004	powershell.exe
Token: SeCreatePagefilePrivilege	4004	powershell.exe
Token: SeBackupPrivilege	4004	powershell.exe
Token: SeRestorePrivilege	4004	powershell.exe
Token: SeShutdownPrivilege	4004	powershell.exe
Token: SeDebugPrivilege	4004	powershell.exe
Token: SeSystemEnvironmentPrivilege	4004	powershell.exe
Token: SeRemoteShutdownPrivilege	4004	powershell.exe
Token: SeUndockPrivilege	4004	powershell.exe
Token: SeManageVolumePrivilege	4004	powershell.exe
Token: 33	4004	powershell.exe
Token: 34	4004	powershell.exe
Token: 35	4004	powershell.exe
Token: 36	4004	powershell.exe
Token: SeDebugPrivilege	4832	powershell.exe
Token: SeIncreaseQuotaPrivilege	4832	powershell.exe
Token: SeSecurityPrivilege	4832	powershell.exe
Token: SeTakeOwnershipPrivilege	4832	powershell.exe
Token: SeLoadDriverPrivilege	4832	powershell.exe
Token: SeSystemProfilePrivilege	4832	powershell.exe
Token: SeSystemtimePrivilege	4832	powershell.exe
Token: SeProfSingleProcessPrivilege	4832	powershell.exe
Token: SeIncBasePriorityPrivilege	4832	powershell.exe
Token: SeCreatePagefilePrivilege	4832	powershell.exe
Token: SeBackupPrivilege	4832	powershell.exe
Token: SeRestorePrivilege	4832	powershell.exe
Token: SeShutdownPrivilege	4832	powershell.exe
Token: SeDebugPrivilege	4832	powershell.exe
Token: SeSystemEnvironmentPrivilege	4832	powershell.exe
Token: SeRemoteShutdownPrivilege	4832	powershell.exe
Token: SeUndockPrivilege	4832	powershell.exe
Token: SeManageVolumePrivilege	4832	powershell.exe
Token: 33	4832	powershell.exe
Token: 34	4832	powershell.exe
Token: 35	4832	powershell.exe
Token: 36	4832	powershell.exe
Token: SeDebugPrivilege	4360	powershell.exe
Token: SeIncreaseQuotaPrivilege	4360	powershell.exe
Token: SeSecurityPrivilege	4360	powershell.exe
Token: SeTakeOwnershipPrivilege	4360	powershell.exe
Token: SeLoadDriverPrivilege	4360	powershell.exe
Token: SeSystemProfilePrivilege	4360	powershell.exe
Token: SeSystemtimePrivilege	4360	powershell.exe
Token: SeProfSingleProcessPrivilege	4360	powershell.exe
Token: SeIncBasePriorityPrivilege	4360	powershell.exe
Token: SeCreatePagefilePrivilege	4360	powershell.exe
Token: SeBackupPrivilege	4360	powershell.exe
Token: SeRestorePrivilege	4360	powershell.exe
Token: SeShutdownPrivilege	4360	powershell.exe
Token: SeDebugPrivilege	4360	powershell.exe
Token: SeSystemEnvironmentPrivilege	4360	powershell.exe
Token: SeRemoteShutdownPrivilege	4360	powershell.exe
Token: SeUndockPrivilege	4360	powershell.exe
Token: SeManageVolumePrivilege	4360	powershell.exe
Token: 33	4360	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid	Process
4480	XClient.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

XClient.exe

description	pid	Process	procid_target
PID 4480 wrote to memory of 4004	4480	XClient.exe	84
PID 4480 wrote to memory of 4004	4480	XClient.exe	84
PID 4480 wrote to memory of 4832	4480	XClient.exe	87
PID 4480 wrote to memory of 4832	4480	XClient.exe	87
PID 4480 wrote to memory of 4360	4480	XClient.exe	89
PID 4480 wrote to memory of 4360	4480	XClient.exe	89
PID 4480 wrote to memory of 3620	4480	XClient.exe	91
PID 4480 wrote to memory of 3620	4480	XClient.exe	91

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4480
- 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:4004
- 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:4832
- 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:4360
- 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
  PID:3620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

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\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
60b3262c3163ee3d466199160b9ed07d

SHA1
994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

SHA256
e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

SHA512
081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

Filesize
1KB

MD5
d6e7796c77e77ee248ff74815ea95b07

SHA1
2c5bf47c6a74e977b83bd505c89db103418a1bf5

SHA256
f58b8c986827fbf0dfe0665e92897777bba0192b6926097ab62fa22114e00984

SHA512
1326565b2c52b1e4f56c614be87fb33f74216d21c0466f36b343b7dbde71f0daf20a29deacfd1c66bc1cc8e23e027c838922caadbd202a772019c9037e739305

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

Filesize
1KB

MD5
47d1715b78ee034489d6c8cfae820c5c

SHA1
f5a035dc4da2185d5160a1a7d045560e54b9a92d

SHA256
34f8a18234f994cbff36e71e372f68ba9ef7acd50c6182fc78a8d8180b279e0e

SHA512
8774213d536d7fbaff6288e17b908a6ad480c029a759918bf5d3278a8a6de9092458035a0ea97c04c675af5a28048945cecc7fc4180ef32671f952d6e3a04868

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jvqj144q.zqe.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4004-4-0x00007FFBD4350000-0x00007FFBD4E12000-memory.dmp

Filesize
10.8MB

Download
memory/4004-14-0x00000136B7270000-0x00000136B7292000-memory.dmp

Filesize
136KB

Download
memory/4004-15-0x00007FFBD4350000-0x00007FFBD4E12000-memory.dmp

Filesize
10.8MB

Download
memory/4004-16-0x00007FFBD4350000-0x00007FFBD4E12000-memory.dmp

Filesize
10.8MB

Download
memory/4004-19-0x00007FFBD4350000-0x00007FFBD4E12000-memory.dmp

Filesize
10.8MB

Download
memory/4004-20-0x00007FFBD4350000-0x00007FFBD4E12000-memory.dmp

Filesize
10.8MB

Download
memory/4004-3-0x00007FFBD4350000-0x00007FFBD4E12000-memory.dmp

Filesize
10.8MB

Download
memory/4480-0-0x00007FFBD4353000-0x00007FFBD4355000-memory.dmp

Filesize
8KB

Download
memory/4480-2-0x00007FFBD4350000-0x00007FFBD4E12000-memory.dmp

Filesize
10.8MB

Download
memory/4480-1-0x0000000000CE0000-0x0000000000CF0000-memory.dmp

Filesize
64KB

Download
memory/4480-55-0x00007FFBD4353000-0x00007FFBD4355000-memory.dmp

Filesize
8KB

Download
memory/4480-60-0x00007FFBD4350000-0x00007FFBD4E12000-memory.dmp

Filesize
10.8MB

Download