xworm | 804a92bb8ebfbe27bc482e76e2d8675f33f4257d3497a92105dc8bfa09011153

Analysis

max time kernel
139s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01-07-2024 02:17

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General

Target

c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe
Size

39KB
MD5

7574843f91261ab512b368ce7942d6ae
SHA1

901ad41ebcf742e242f0628f8aa5570edc0999b5
SHA256

c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b
SHA512

0ae4db524ea03ef2f3b74c60dbe772d69d733392ae78705d13d27a9ebe5cd8b6ee9d9ba51bc0d59980a0922730f8930ffbf246e735e53abb52a2910f52d838cb
SSDEEP

768:IfP7EV11K5acblLJKuuwhS5vypufFWPa9bt6POwhoaibE:SDEV10wuVJKuuwhSIEFv9bt6POwyjQ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

64.23.249.117:6098

Mutex

qBm7HSWbfhJrOf6O

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource yara_rule

behavioral2/memory/4564-1-0x00000000002C0000-0x00000000002D0000-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

1116 powershell.exe
1644 powershell.exe
3692 powershell.exe
4268 powershell.exe

resource	yara_rule
behavioral2/memory/4564-1-0x00000000002C0000-0x00000000002D0000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe	family_xworm

pid	process
1116	powershell.exe
1644	powershell.exe
3692	powershell.exe
4268	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:

c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

Drops startup file 2 IoCs

Processes:

c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

Executes dropped EXE 3 IoCs

Processes:

XClient.exeXClient.exeXClient.exe

pid process

4092 XClient.exe
4940 XClient.exe
1684 XClient.exe

pid	process
4092	XClient.exe
4940	XClient.exe
1684	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

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

1236 schtasks.exe

pid	process
1236	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exec826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

pid	process
4268	powershell.exe
4268	powershell.exe
1116	powershell.exe
1116	powershell.exe
1644	powershell.exe
1644	powershell.exe
3692	powershell.exe
3692	powershell.exe
4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exepowershell.exepowershell.exepowershell.exepowershell.exeXClient.exeXClient.exeXClient.exe

description	pid	process
Token: SeDebugPrivilege	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe
Token: SeDebugPrivilege	4268	powershell.exe
Token: SeDebugPrivilege	1116	powershell.exe
Token: SeDebugPrivilege	1644	powershell.exe
Token: SeDebugPrivilege	3692	powershell.exe
Token: SeDebugPrivilege	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe
Token: SeDebugPrivilege	4092	XClient.exe
Token: SeDebugPrivilege	4940	XClient.exe
Token: SeDebugPrivilege	1684	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

pid process

4564 c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

pid	process
4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe

description	pid	process	target process
PID 4564 wrote to memory of 4268	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	powershell.exe
PID 4564 wrote to memory of 4268	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	powershell.exe
PID 4564 wrote to memory of 1116	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	powershell.exe
PID 4564 wrote to memory of 1116	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	powershell.exe
PID 4564 wrote to memory of 1644	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	powershell.exe
PID 4564 wrote to memory of 1644	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	powershell.exe
PID 4564 wrote to memory of 3692	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	powershell.exe
PID 4564 wrote to memory of 3692	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	powershell.exe
PID 4564 wrote to memory of 1236	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe	schtasks.exe
PID 4564 wrote to memory of 1236	4564	c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.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\c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe
"C:\Users\Admin\AppData\Local\Temp\c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.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:4564

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\c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4268

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1116

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:1644

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:3692

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:1236

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4092

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4940

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1684

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pgdjz05k.5yv.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe
Filesize
39KB

MD5
7574843f91261ab512b368ce7942d6ae

SHA1
901ad41ebcf742e242f0628f8aa5570edc0999b5

SHA256
c826d38990051067a23d7ced76e20925ec47749e562ef718029ff06555680b5b

SHA512
0ae4db524ea03ef2f3b74c60dbe772d69d733392ae78705d13d27a9ebe5cd8b6ee9d9ba51bc0d59980a0922730f8930ffbf246e735e53abb52a2910f52d838cb

Download Submit
memory/4268-14-0x00007FFD5BCF0000-0x00007FFD5C7B1000-memory.dmp

Filesize
10.8MB

Download
memory/4268-17-0x00007FFD5BCF0000-0x00007FFD5C7B1000-memory.dmp

Filesize
10.8MB

Download
memory/4268-13-0x00007FFD5BCF0000-0x00007FFD5C7B1000-memory.dmp

Filesize
10.8MB

Download
memory/4268-12-0x00007FFD5BCF0000-0x00007FFD5C7B1000-memory.dmp

Filesize
10.8MB

Download
memory/4268-7-0x000001B5FE700000-0x000001B5FE722000-memory.dmp

Filesize
136KB

Download
memory/4564-56-0x00007FFD5BCF0000-0x00007FFD5C7B1000-memory.dmp

Filesize
10.8MB

Download
memory/4564-0-0x00007FFD5BCF3000-0x00007FFD5BCF5000-memory.dmp

Filesize
8KB

Download
memory/4564-60-0x00007FFD5BCF3000-0x00007FFD5BCF5000-memory.dmp

Filesize
8KB

Download
memory/4564-61-0x00007FFD5BCF0000-0x00007FFD5C7B1000-memory.dmp

Filesize
10.8MB

Download
memory/4564-1-0x00000000002C0000-0x00000000002D0000-memory.dmp

Filesize
64KB

Download