xworm | b6253c0d16bb1f326958003cf456382dcb1876f4519519b6b39676ee369ac2fb

Analysis

max time kernel
30s
max time network
29s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
01/03/2025, 20:10

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General

Target

tool.exe
Size

262KB
MD5

3a5caf979b458f716a670e49ee8c4cca
SHA1

80f20a21284752096e93d0a99a243e1cbca7d458
SHA256

b6253c0d16bb1f326958003cf456382dcb1876f4519519b6b39676ee369ac2fb
SHA512

e00a5f7753f6055766028fe38f780d04c02b74d6852c0e6b684001740d3d942349ec03d7fdf32af543f2b2cc1f8b241dcb87e3b52dcdfcfa3a08f96f69bddb81
SSDEEP

6144:ilejaU5gt8SYDRmGWp8Vu2PD9+W5reXsC24SC:pjh5SY1mGWpw995iT24S

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

147.185.221.25:58680

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4876-41-0x0000000002910000-0x0000000002928000-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 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3216	powershell.exe
1748	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-1-5-21-1639757381-2759246526-4253643256-1000\Control Panel\International\Geo\Nation	tool.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4876	taskhostw.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
9	discord.com
10	discord.com

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
3	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 5 IoCs

pid	Process
3216	powershell.exe
3216	powershell.exe
1748	powershell.exe
1748	powershell.exe
4876	taskhostw.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeDebugPrivilege	3364	tool.exe
Token: SeDebugPrivilege	3216	powershell.exe
Token: SeIncreaseQuotaPrivilege	3216	powershell.exe
Token: SeSecurityPrivilege	3216	powershell.exe
Token: SeTakeOwnershipPrivilege	3216	powershell.exe
Token: SeLoadDriverPrivilege	3216	powershell.exe
Token: SeSystemProfilePrivilege	3216	powershell.exe
Token: SeSystemtimePrivilege	3216	powershell.exe
Token: SeProfSingleProcessPrivilege	3216	powershell.exe
Token: SeIncBasePriorityPrivilege	3216	powershell.exe
Token: SeCreatePagefilePrivilege	3216	powershell.exe
Token: SeBackupPrivilege	3216	powershell.exe
Token: SeRestorePrivilege	3216	powershell.exe
Token: SeShutdownPrivilege	3216	powershell.exe
Token: SeDebugPrivilege	3216	powershell.exe
Token: SeSystemEnvironmentPrivilege	3216	powershell.exe
Token: SeRemoteShutdownPrivilege	3216	powershell.exe
Token: SeUndockPrivilege	3216	powershell.exe
Token: SeManageVolumePrivilege	3216	powershell.exe
Token: 33	3216	powershell.exe
Token: 34	3216	powershell.exe
Token: 35	3216	powershell.exe
Token: 36	3216	powershell.exe
Token: SeDebugPrivilege	1748	powershell.exe
Token: SeIncreaseQuotaPrivilege	1748	powershell.exe
Token: SeSecurityPrivilege	1748	powershell.exe
Token: SeTakeOwnershipPrivilege	1748	powershell.exe
Token: SeLoadDriverPrivilege	1748	powershell.exe
Token: SeSystemProfilePrivilege	1748	powershell.exe
Token: SeSystemtimePrivilege	1748	powershell.exe
Token: SeProfSingleProcessPrivilege	1748	powershell.exe
Token: SeIncBasePriorityPrivilege	1748	powershell.exe
Token: SeCreatePagefilePrivilege	1748	powershell.exe
Token: SeBackupPrivilege	1748	powershell.exe
Token: SeRestorePrivilege	1748	powershell.exe
Token: SeShutdownPrivilege	1748	powershell.exe
Token: SeDebugPrivilege	1748	powershell.exe
Token: SeSystemEnvironmentPrivilege	1748	powershell.exe
Token: SeRemoteShutdownPrivilege	1748	powershell.exe
Token: SeUndockPrivilege	1748	powershell.exe
Token: SeManageVolumePrivilege	1748	powershell.exe
Token: 33	1748	powershell.exe
Token: 34	1748	powershell.exe
Token: 35	1748	powershell.exe
Token: 36	1748	powershell.exe
Token: SeDebugPrivilege	4876	taskhostw.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4876	taskhostw.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3364 wrote to memory of 3216	3364	tool.exe	85
PID 3364 wrote to memory of 3216	3364	tool.exe	85
PID 3364 wrote to memory of 1748	3364	tool.exe	90
PID 3364 wrote to memory of 1748	3364	tool.exe	90

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\tool.exe
"C:\Users\Admin\AppData\Local\Temp\tool.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3364
- 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\taskhostw.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3216
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'taskhostw.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1748

C:\Users\Admin\AppData\Roaming\taskhostw.exe
"C:\Users\Admin\AppData\Roaming\taskhostw.exe"
1⤵
- Drops startup file
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4876

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

Web Service

T1102

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\Temp\__PSScriptPolicyTest_ba5ih32t.hs4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
262KB

MD5
3a5caf979b458f716a670e49ee8c4cca

SHA1
80f20a21284752096e93d0a99a243e1cbca7d458

SHA256
b6253c0d16bb1f326958003cf456382dcb1876f4519519b6b39676ee369ac2fb

SHA512
e00a5f7753f6055766028fe38f780d04c02b74d6852c0e6b684001740d3d942349ec03d7fdf32af543f2b2cc1f8b241dcb87e3b52dcdfcfa3a08f96f69bddb81

Download Submit
memory/3216-4-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/3216-3-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/3216-15-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/3216-14-0x000001FF4BFD0000-0x000001FF4BFF2000-memory.dmp

Filesize
136KB

Download
memory/3216-16-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/3216-17-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/3216-20-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/3364-0-0x00007FFF750B3000-0x00007FFF750B5000-memory.dmp

Filesize
8KB

Download
memory/3364-2-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/3364-35-0x00007FFF750B3000-0x00007FFF750B5000-memory.dmp

Filesize
8KB

Download
memory/3364-36-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/3364-1-0x0000000000480000-0x00000000004C8000-memory.dmp

Filesize
288KB

Download
memory/3364-40-0x00007FFF750B0000-0x00007FFF75B72000-memory.dmp

Filesize
10.8MB

Download
memory/4876-41-0x0000000002910000-0x0000000002928000-memory.dmp

Filesize
96KB

Download