xworm | 0d23152df158541a195e57e5e6f1027728349e8e813f002d46a0c6950a90c688

Analysis

max time kernel
42s
max time network
48s
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 10:44

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General

Target

Payment_Information.exe
Size

1.2MB
MD5

bfe4e6c774018b6e85d33fd381427d2f
SHA1

e75e6b64ea2c112a3a1b6a5ca1c0663cb185f704
SHA256

473c0737f6125ad0dff41521ab1e6331cd457c3253556b2bce4482ebf86e829b
SHA512

041f0fd37b0fff784b22261e23853fd3474881820f01aa3cc1dbdf4c4c0c25dfda70b15a4ac007aef70b3d28c92cfde60d3ec91e32f48c670f94e90b10d904a3
SSDEEP

24576:q4fvrZFtYuN29VEFV5qSh0lhSMXl0NJkdV4KKhnPmgUf5:nvhQVKV5qPkJIV4ZhPmT

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

newsferinfo.com:7000

continentalgames.top:7000

Mutex

8VF9MKRpl0LkiNW2

Attributes

Install_directory
%Public%
install_file
microsoft_version_0124.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/972-4-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral2/memory/2504-5-0x00000000024B0000-0x00000000024D2000-memory.dmp	family_xworm
behavioral2/memory/972-3-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral2/memory/972-2-0x0000000000400000-0x0000000000412000-memory.dmp	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

4948 powershell.exe
4496 powershell.exe
4228 powershell.exe
2600 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:

RegAsm.exe

description ioc process

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

pid	process
4948	powershell.exe
4496	powershell.exe
4228	powershell.exe
2600	powershell.exe

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

Drops startup file 2 IoCs

Processes:

RegAsm.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\microsoft_version_0124.lnk	RegAsm.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\microsoft_version_0124.lnk	RegAsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsoft_version_0124 = "C:\\Users\\Public\\microsoft_version_0124.exe"	RegAsm.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

2 ip-api.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

Payment_Information.exe

description pid process target process

PID 2504 set thread context of 972 2504 Payment_Information.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

RegAsm.exe

pid process

972 RegAsm.exe
Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeRegAsm.exe

pid process

4948 powershell.exe
4948 powershell.exe
4496 powershell.exe
4496 powershell.exe
4228 powershell.exe
4228 powershell.exe
2600 powershell.exe
2600 powershell.exe
972 RegAsm.exe

flow	ioc
2	ip-api.com

description	pid	process	target process
PID 2504 set thread context of 972	2504	Payment_Information.exe	RegAsm.exe

pid	process
972	RegAsm.exe

pid	process
4948	powershell.exe
4948	powershell.exe
4496	powershell.exe
4496	powershell.exe
4228	powershell.exe
4228	powershell.exe
2600	powershell.exe
2600	powershell.exe
972	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

RegAsm.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	972	RegAsm.exe
Token: SeDebugPrivilege	4948	powershell.exe
Token: SeDebugPrivilege	4496	powershell.exe
Token: SeDebugPrivilege	4228	powershell.exe
Token: SeDebugPrivilege	2600	powershell.exe
Token: SeDebugPrivilege	972	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

972 RegAsm.exe

pid	process
972	RegAsm.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Payment_Information.exeRegAsm.exe

description	pid	process	target process
PID 2504 wrote to memory of 972	2504	Payment_Information.exe	RegAsm.exe
PID 2504 wrote to memory of 972	2504	Payment_Information.exe	RegAsm.exe
PID 2504 wrote to memory of 972	2504	Payment_Information.exe	RegAsm.exe
PID 2504 wrote to memory of 972	2504	Payment_Information.exe	RegAsm.exe
PID 2504 wrote to memory of 972	2504	Payment_Information.exe	RegAsm.exe
PID 2504 wrote to memory of 972	2504	Payment_Information.exe	RegAsm.exe
PID 2504 wrote to memory of 972	2504	Payment_Information.exe	RegAsm.exe
PID 2504 wrote to memory of 972	2504	Payment_Information.exe	RegAsm.exe
PID 972 wrote to memory of 4948	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 4948	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 4948	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 4496	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 4496	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 4496	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 4228	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 4228	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 4228	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 2600	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 2600	972	RegAsm.exe	powershell.exe
PID 972 wrote to memory of 2600	972	RegAsm.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\Payment_Information.exe
"C:\Users\Admin\AppData\Local\Temp\Payment_Information.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2504

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:972

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4948

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RegAsm.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4496

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\microsoft_version_0124.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4228

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'microsoft_version_0124.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2600

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
968cb9309758126772781b83adb8a28f

SHA1
8da30e71accf186b2ba11da1797cf67f8f78b47c

SHA256
92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

SHA512
4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
18KB

MD5
51a960be72446d7c634e7397c087bf2d

SHA1
ce896fe4c86a8ea3d29c7678bdda32ecf2e07c34

SHA256
21c05b6ec1aa78d59ab637eaa9ec475f7aca03c051e1d4b40c131bae3171e75d

SHA512
968742d654e00603ef7e424e14e90f0d4f569f3787092375ebfbd021661019d1e3fd22f2ae98ffe5dcb10fa03abcbf061e46eedd6c695c46f0cc65280f29bdaa

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
18KB

MD5
647396756e4896755b7c0c64d03933de

SHA1
385e0dec2f668b485f7fbb57d31566af33a1c6b0

SHA256
497d4523d01d91a60583765dd9fb6a46437b3abc8adf3af191466c98fbe98767

SHA512
9264ff3360cf05e16c09d504f8644aeedf36f9f85878451011d177c65d98d87f6a8a13a9fecda1cc6d6485aa62138b5ad587bccc0dc11bab97e43a039c28ce44

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
18KB

MD5
a1062052be2ec6fecaf9e4886376ace9

SHA1
37ac3cc026cd24ce508c1e4201d1eb4cd1288b2f

SHA256
18141e30aec742d8073b2f57053a9131c9ee29e3ac3b2c93bc29cccef2ff65b9

SHA512
ab624ab31b8946be6836381ca28ebbc7b524820f32a2fb666c15ffecf06cb596d204a467a800c12bd6c04668c9233f13cfc27f96a19558718c25f38c33ac54e3

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_s4amejf5.kkf.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/972-128-0x0000000006E00000-0x00000000073A4000-memory.dmp

Filesize
5.6MB

Download
memory/972-2-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/972-7-0x00000000055F0000-0x000000000568C000-memory.dmp

Filesize
624KB

Download
memory/972-8-0x0000000005690000-0x00000000056F6000-memory.dmp

Filesize
408KB

Download
memory/972-9-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/972-130-0x0000000006BE0000-0x0000000006BEA000-memory.dmp

Filesize
40KB

Download
memory/972-129-0x0000000006BF0000-0x0000000006C82000-memory.dmp

Filesize
584KB

Download
memory/972-44-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/972-28-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/972-6-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/972-1-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/972-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/972-3-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/972-4-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2504-5-0x00000000024B0000-0x00000000024D2000-memory.dmp

Filesize
136KB

Download
memory/2600-113-0x000000006F650000-0x000000006F69C000-memory.dmp

Filesize
304KB

Download
memory/4228-90-0x00000000054E0000-0x0000000005834000-memory.dmp

Filesize
3.3MB

Download
memory/4228-92-0x000000006F650000-0x000000006F69C000-memory.dmp

Filesize
304KB

Download
memory/4496-70-0x000000006F650000-0x000000006F69C000-memory.dmp

Filesize
304KB

Download
memory/4496-68-0x0000000005730000-0x0000000005A84000-memory.dmp

Filesize
3.3MB

Download
memory/4948-30-0x000000006F650000-0x000000006F69C000-memory.dmp

Filesize
304KB

Download
memory/4948-57-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4948-42-0x0000000006E30000-0x0000000006ED3000-memory.dmp

Filesize
652KB

Download
memory/4948-45-0x00000000075B0000-0x0000000007C2A000-memory.dmp

Filesize
6.5MB

Download
memory/4948-47-0x0000000006F60000-0x0000000006F7A000-memory.dmp

Filesize
104KB

Download
memory/4948-46-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4948-48-0x0000000006FD0000-0x0000000006FDA000-memory.dmp

Filesize
40KB

Download
memory/4948-49-0x00000000071E0000-0x0000000007276000-memory.dmp

Filesize
600KB

Download
memory/4948-50-0x0000000007160000-0x0000000007171000-memory.dmp

Filesize
68KB

Download
memory/4948-51-0x0000000007190000-0x000000000719E000-memory.dmp

Filesize
56KB

Download
memory/4948-52-0x00000000071A0000-0x00000000071B4000-memory.dmp

Filesize
80KB

Download
memory/4948-53-0x00000000072A0000-0x00000000072BA000-memory.dmp

Filesize
104KB

Download
memory/4948-54-0x0000000007280000-0x0000000007288000-memory.dmp

Filesize
32KB

Download
memory/4948-43-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4948-40-0x0000000006210000-0x000000000622E000-memory.dmp

Filesize
120KB

Download
memory/4948-41-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4948-29-0x0000000006BF0000-0x0000000006C22000-memory.dmp

Filesize
200KB

Download
memory/4948-27-0x0000000005C60000-0x0000000005CAC000-memory.dmp

Filesize
304KB

Download
memory/4948-26-0x0000000005C30000-0x0000000005C4E000-memory.dmp

Filesize
120KB

Download
memory/4948-24-0x0000000005730000-0x0000000005A84000-memory.dmp

Filesize
3.3MB

Download
memory/4948-25-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4948-14-0x0000000004C00000-0x0000000004C66000-memory.dmp

Filesize
408KB

Download
memory/4948-13-0x0000000004B50000-0x0000000004B72000-memory.dmp

Filesize
136KB

Download
memory/4948-11-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/4948-12-0x0000000004F00000-0x0000000005528000-memory.dmp

Filesize
6.2MB

Download
memory/4948-10-0x0000000002310000-0x0000000002346000-memory.dmp

Filesize
216KB

Download