xworm | f352579ae0f0f115437690d14b911aee168574c8bc061c475b9c83bb065932a1

Analysis

max time kernel
144s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2024 23:27

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General

Target

XClient.exe
Size

67KB
MD5

12c7786f3f9f87fc04fd3562d957a57a
SHA1

e4df265d2a5678e8620c6633a898647ac41514da
SHA256

f352579ae0f0f115437690d14b911aee168574c8bc061c475b9c83bb065932a1
SHA512

a43be5f5626c33211741f95f578666b4b3a40514bdd3726f5ca564fdba968a4b9f059e230cdd9625ade48ede2daeecfbd83f739bf21c3e74489210a16d094c08
SSDEEP

1536:Zc6GeeDwRMepnZ8k2fbRE+ptxb7Ed4pXD/6M/qOSYGLZ:60einZ8LDRE+ptxbw2zRyOSYuZ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

147.185.221.19:33365:2137

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource yara_rule

behavioral1/memory/2744-1-0x0000000000E10000-0x0000000000E28000-memory.dmp family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe family_xworm
Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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

4372 powershell.exe
5076 powershell.exe
760 powershell.exe
4868 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-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation XClient.exe

resource	yara_rule
behavioral1/memory/2744-1-0x0000000000E10000-0x0000000000E28000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe	family_xworm

pid	process
4372	powershell.exe
5076	powershell.exe
760	powershell.exe
4868	powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\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

Executes dropped EXE 2 IoCs

Processes:

XClient.exeXClient.exe

pid process

2100 XClient.exe
2580 XClient.exe

pid	process
2100	XClient.exe
2580	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XClient.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	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

28 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

Processes:

schtasks.exe

pid process

4316 schtasks.exe
Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid process

4372 powershell.exe
4372 powershell.exe
4372 powershell.exe
5076 powershell.exe
5076 powershell.exe
760 powershell.exe
760 powershell.exe
4868 powershell.exe
4868 powershell.exe
2744 XClient.exe

flow	ioc
28	ip-api.com

pid	process
4316	schtasks.exe

pid	process
4372	powershell.exe
4372	powershell.exe
4372	powershell.exe
5076	powershell.exe
5076	powershell.exe
760	powershell.exe
760	powershell.exe
4868	powershell.exe
4868	powershell.exe
2744	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exepowershell.exeXClient.exeXClient.exe

description	pid	process
Token: SeDebugPrivilege	2744	XClient.exe
Token: SeDebugPrivilege	4372	powershell.exe
Token: SeDebugPrivilege	5076	powershell.exe
Token: SeDebugPrivilege	760	powershell.exe
Token: SeDebugPrivilege	4868	powershell.exe
Token: SeDebugPrivilege	2744	XClient.exe
Token: SeDebugPrivilege	2100	XClient.exe
Token: SeDebugPrivilege	2580	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

2744 XClient.exe

pid	process
2744	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

XClient.exe

description	pid	process	target process
PID 2744 wrote to memory of 4372	2744	XClient.exe	powershell.exe
PID 2744 wrote to memory of 4372	2744	XClient.exe	powershell.exe
PID 2744 wrote to memory of 5076	2744	XClient.exe	powershell.exe
PID 2744 wrote to memory of 5076	2744	XClient.exe	powershell.exe
PID 2744 wrote to memory of 760	2744	XClient.exe	powershell.exe
PID 2744 wrote to memory of 760	2744	XClient.exe	powershell.exe
PID 2744 wrote to memory of 4868	2744	XClient.exe	powershell.exe
PID 2744 wrote to memory of 4868	2744	XClient.exe	powershell.exe
PID 2744 wrote to memory of 4316	2744	XClient.exe	schtasks.exe
PID 2744 wrote to memory of 4316	2744	XClient.exe	schtasks.exe

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.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.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:2744

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:4372

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:5076

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:760

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:4868

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4316

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2100

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2580

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log
Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
67e8893616f805af2411e2f4a1411b2a

SHA1
39bf1e1a0ddf46ce7c136972120f512d92827dcd

SHA256
ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

SHA512
164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xsn1iffm.zwf.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe
Filesize
67KB

MD5
12c7786f3f9f87fc04fd3562d957a57a

SHA1
e4df265d2a5678e8620c6633a898647ac41514da

SHA256
f352579ae0f0f115437690d14b911aee168574c8bc061c475b9c83bb065932a1

SHA512
a43be5f5626c33211741f95f578666b4b3a40514bdd3726f5ca564fdba968a4b9f059e230cdd9625ade48ede2daeecfbd83f739bf21c3e74489210a16d094c08

Download Submit
memory/2744-1-0x0000000000E10000-0x0000000000E28000-memory.dmp

Filesize
96KB

Download
memory/2744-2-0x00007FF8DC9A0000-0x00007FF8DD461000-memory.dmp

Filesize
10.8MB

Download
memory/2744-57-0x00007FF8DC9A3000-0x00007FF8DC9A5000-memory.dmp

Filesize
8KB

Download
memory/2744-58-0x00007FF8DC9A0000-0x00007FF8DD461000-memory.dmp

Filesize
10.8MB

Download
memory/2744-0-0x00007FF8DC9A3000-0x00007FF8DC9A5000-memory.dmp

Filesize
8KB

Download
memory/4372-14-0x00007FF8DC9A0000-0x00007FF8DD461000-memory.dmp

Filesize
10.8MB

Download
memory/4372-15-0x00007FF8DC9A0000-0x00007FF8DD461000-memory.dmp

Filesize
10.8MB

Download
memory/4372-18-0x00007FF8DC9A0000-0x00007FF8DD461000-memory.dmp

Filesize
10.8MB

Download
memory/4372-13-0x00007FF8DC9A0000-0x00007FF8DD461000-memory.dmp

Filesize
10.8MB

Download
memory/4372-8-0x0000026CB1020000-0x0000026CB1042000-memory.dmp

Filesize
136KB

Download