xworm | 473c0737f6125ad0dff41521ab1e6331cd457c3253556b2bce4482ebf86e829b

Analysis

max time kernel
149s
max time network
151s
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 09:07

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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/1836-4-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral2/memory/1836-3-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral2/memory/1836-2-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm
behavioral2/memory/3292-5-0x00000000006B0000-0x00000000006D2000-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

4932 powershell.exe
736 powershell.exe
5092 powershell.exe
3824 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation RegAsm.exe

pid	process
4932	powershell.exe
736	powershell.exe
5092	powershell.exe
3824	powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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

Loads dropped DLL 1 IoCs

Processes:

RegAsm.exe

pid process

1836 RegAsm.exe

pid	process
1836	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-1-5-21-4124900551-4068476067-3491212533-1000\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

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

Processes:

Payment_Information.exe

description pid process target process

PID 3292 set thread context of 1836 3292 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

1836 RegAsm.exe
Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeRegAsm.exe

pid process

4932 powershell.exe
4932 powershell.exe
736 powershell.exe
736 powershell.exe
5092 powershell.exe
5092 powershell.exe
3824 powershell.exe
3824 powershell.exe
1836 RegAsm.exe

flow	ioc
16	ip-api.com

description	pid	process	target process
PID 3292 set thread context of 1836	3292	Payment_Information.exe	RegAsm.exe

pid	process
1836	RegAsm.exe

pid	process
4932	powershell.exe
4932	powershell.exe
736	powershell.exe
736	powershell.exe
5092	powershell.exe
5092	powershell.exe
3824	powershell.exe
3824	powershell.exe
1836	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

RegAsm.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1836	RegAsm.exe
Token: SeDebugPrivilege	4932	powershell.exe
Token: SeDebugPrivilege	736	powershell.exe
Token: SeDebugPrivilege	5092	powershell.exe
Token: SeDebugPrivilege	3824	powershell.exe
Token: SeDebugPrivilege	1836	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

1836 RegAsm.exe

pid	process
1836	RegAsm.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

Payment_Information.exeRegAsm.exe

description	pid	process	target process
PID 3292 wrote to memory of 1836	3292	Payment_Information.exe	RegAsm.exe
PID 3292 wrote to memory of 1836	3292	Payment_Information.exe	RegAsm.exe
PID 3292 wrote to memory of 1836	3292	Payment_Information.exe	RegAsm.exe
PID 3292 wrote to memory of 1836	3292	Payment_Information.exe	RegAsm.exe
PID 3292 wrote to memory of 1836	3292	Payment_Information.exe	RegAsm.exe
PID 3292 wrote to memory of 1836	3292	Payment_Information.exe	RegAsm.exe
PID 3292 wrote to memory of 1836	3292	Payment_Information.exe	RegAsm.exe
PID 3292 wrote to memory of 1836	3292	Payment_Information.exe	RegAsm.exe
PID 1836 wrote to memory of 4932	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 4932	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 4932	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 736	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 736	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 736	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 5092	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 5092	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 5092	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 3824	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 3824	1836	RegAsm.exe	powershell.exe
PID 1836 wrote to memory of 3824	1836	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:3292

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
- Loads dropped DLL
- 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:1836

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:4932

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:736

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:5092

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:3824

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
53b29e71c6c8703ad1192165c543eec0

SHA1
0a1a021e745ede2fd1eee6f470c3ffbff4449db0

SHA256
825fbaa4c8b9b231008ba22ca233504c0063c6249c9c99c4adf1610a7927addb

SHA512
e788d86d95a708f2ca17503e554f9c6a8912c19e90dd55f3401e772a6eed7427dd0d049180f0a8709658b1e1b57564fb7c13d5e06bc15e12169109c3c4448370

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

MD5
3aa47b29cef9829dfb48da5959fab322

SHA1
1ce69baabe20d53c701e869d7dbf5e5335ff4a1e

SHA256
6c5fc875b1dc21d010d07a9626fb32a47d882c0f943dfa016de4f53f6a7b3d57

SHA512
cf61b41af545004453736234d465f1d883e5cafc222cc592544dff59b1bcfc4e139f861f5452c79b8ad48231b1cdc4681f9ce9ca3457e23d7eb73b876b55f433

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

MD5
b96d29fcc9dd92cd1e1b017c2b3a0065

SHA1
ca8075127eeef23f8b3c3a67f9a9a18021eb6dd3

SHA256
3e4db1bb7baaa74f47a7504f20cebf278e000eb150fbac3f3f521951eeb03bfd

SHA512
ef762712adbf6c2242f47eb258f11f18ccc5e19cc1eb83cc6405664204affce345a720951c03e79dbcd6ac09e5304227479ffdb6338c52736e93d26255779a95

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4av34cqt.53s.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp83DC.tmp
Filesize
82KB

MD5
c38b245b97fea00a08141af793a76f87

SHA1
c9c5c786f8e8d3c5670ef64f4f3ae35c556bb640

SHA256
b6647006cf5e920db52c66a2028f2492df03c4deceda32fb021ebe4126bfe261

SHA512
6d4a19aff6c2999f2369ae8831a8208aeefcb6fe7620a86bd8343690a155c055d0327ec4b42af3929fd6997ad5ce28d0e7f9a980567b244f3e373409cf2e5d38

Download Submit
memory/736-66-0x0000000005D60000-0x00000000060B4000-memory.dmp

Filesize
3.3MB

Download
memory/736-68-0x000000006FB40000-0x000000006FB8C000-memory.dmp

Filesize
304KB

Download
memory/1836-130-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/1836-6-0x0000000074B6E000-0x0000000074B6F000-memory.dmp

Filesize
4KB

Download
memory/1836-8-0x0000000005170000-0x00000000051D6000-memory.dmp

Filesize
408KB

Download
memory/1836-132-0x0000000005B70000-0x0000000005BAA000-memory.dmp

Filesize
232KB

Download
memory/1836-7-0x00000000050D0000-0x000000000516C000-memory.dmp

Filesize
624KB

Download
memory/1836-4-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1836-129-0x0000000074B6E000-0x0000000074B6F000-memory.dmp

Filesize
4KB

Download
memory/1836-128-0x0000000006520000-0x000000000652A000-memory.dmp

Filesize
40KB

Download
memory/1836-127-0x0000000006540000-0x00000000065D2000-memory.dmp

Filesize
584KB

Download
memory/1836-9-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/1836-126-0x00000000068A0000-0x0000000006E44000-memory.dmp

Filesize
5.6MB

Download
memory/1836-3-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1836-2-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1836-1-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1836-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3292-5-0x00000000006B0000-0x00000000006D2000-memory.dmp

Filesize
136KB

Download
memory/3824-111-0x000000006FB40000-0x000000006FB8C000-memory.dmp

Filesize
304KB

Download
memory/4932-13-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/4932-42-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/4932-44-0x0000000007440000-0x0000000007ABA000-memory.dmp

Filesize
6.5MB

Download
memory/4932-45-0x0000000006E00000-0x0000000006E1A000-memory.dmp

Filesize
104KB

Download
memory/4932-46-0x0000000006E70000-0x0000000006E7A000-memory.dmp

Filesize
40KB

Download
memory/4932-47-0x0000000007080000-0x0000000007116000-memory.dmp

Filesize
600KB

Download
memory/4932-48-0x0000000007000000-0x0000000007011000-memory.dmp

Filesize
68KB

Download
memory/4932-49-0x0000000007030000-0x000000000703E000-memory.dmp

Filesize
56KB

Download
memory/4932-50-0x0000000007040000-0x0000000007054000-memory.dmp

Filesize
80KB

Download
memory/4932-51-0x0000000007140000-0x000000000715A000-memory.dmp

Filesize
104KB

Download
memory/4932-52-0x0000000007120000-0x0000000007128000-memory.dmp

Filesize
32KB

Download
memory/4932-55-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/4932-29-0x00000000060B0000-0x00000000060E2000-memory.dmp

Filesize
200KB

Download
memory/4932-43-0x0000000006CB0000-0x0000000006D53000-memory.dmp

Filesize
652KB

Download
memory/4932-41-0x0000000006090000-0x00000000060AE000-memory.dmp

Filesize
120KB

Download
memory/4932-31-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/4932-10-0x0000000002210000-0x0000000002246000-memory.dmp

Filesize
216KB

Download
memory/4932-30-0x000000006FB40000-0x000000006FB8C000-memory.dmp

Filesize
304KB

Download
memory/4932-11-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/4932-28-0x0000000005B70000-0x0000000005BBC000-memory.dmp

Filesize
304KB

Download
memory/4932-27-0x0000000005AE0000-0x0000000005AFE000-memory.dmp

Filesize
120KB

Download
memory/4932-22-0x00000000054E0000-0x0000000005834000-memory.dmp

Filesize
3.3MB

Download
memory/4932-16-0x0000000074B60000-0x0000000075310000-memory.dmp

Filesize
7.7MB

Download
memory/4932-15-0x0000000004CB0000-0x0000000004D16000-memory.dmp

Filesize
408KB

Download
memory/4932-14-0x0000000004C00000-0x0000000004C22000-memory.dmp

Filesize
136KB

Download
memory/4932-12-0x0000000004D80000-0x00000000053A8000-memory.dmp

Filesize
6.2MB

Download
memory/5092-90-0x000000006FB40000-0x000000006FB8C000-memory.dmp

Filesize
304KB

Download
memory/5092-79-0x00000000054F0000-0x0000000005844000-memory.dmp

Filesize
3.3MB

Download