xworm | d2a3936965e20932965c64a29ddb12d5d7ecd9a4fd2a074b374da3637881e520

Analysis

max time kernel
58s
max time network
62s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
15-06-2024 05:25

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General

Target

Uvhnsfbxbdz.exe
Size

4.6MB
MD5

661f27fd0e4a64fa4c355653659b4f34
SHA1

2744908b35ff9581f2cbb37ce89e7f7510dee8a7
SHA256

d2a3936965e20932965c64a29ddb12d5d7ecd9a4fd2a074b374da3637881e520
SHA512

8941b4cd1f21e01acc25a4f3b8e3cfec7886eab0e4139f2311b306d9538ae7dbb22af800d2aa1232a8669fb149a854162b7ffa4c4278ebe5460d82d442b3fe1a
SSDEEP

24576:AKRkqPje4s2Dhi0ZL8aSl2awqGZ/Gss48JhE9hR2HN1dcPuWd+V54xOS/9Ml/JA3:Ay

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2504-4902-0x0000000000400000-0x0000000000434000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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

Processes:

powershell.exepowershell.exe

pid process

1052 powershell.exe
2396 powershell.exe

pid	process
1052	powershell.exe
2396	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Uvhnsfbxbdz.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\Docker \\.exe"	Uvhnsfbxbdz.exe

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

Web Service
T1102

Processes:

flow ioc

5 pastebin.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.

Processes:

flow ioc

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

Processes:

Uvhnsfbxbdz.exe

description pid process target process

PID 1460 set thread context of 2504 1460 Uvhnsfbxbdz.exe Uvhnsfbxbdz.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

Uvhnsfbxbdz.exepowershell.exepowershell.exe

pid process

1460 Uvhnsfbxbdz.exe
2396 powershell.exe
2396 powershell.exe
1052 powershell.exe
1052 powershell.exe

flow	ioc
5	pastebin.com

flow	ioc
1	ip-api.com

description	pid	process	target process
PID 1460 set thread context of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe

pid	process
1460	Uvhnsfbxbdz.exe
2396	powershell.exe
2396	powershell.exe
1052	powershell.exe
1052	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Uvhnsfbxbdz.exeUvhnsfbxbdz.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1460	Uvhnsfbxbdz.exe
Token: SeDebugPrivilege	1460	Uvhnsfbxbdz.exe
Token: SeDebugPrivilege	2504	Uvhnsfbxbdz.exe
Token: SeDebugPrivilege	2396	powershell.exe
Token: SeDebugPrivilege	1052	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Uvhnsfbxbdz.exeUvhnsfbxbdz.exe

description	pid	process	target process
PID 1460 wrote to memory of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504	1460	Uvhnsfbxbdz.exe	Uvhnsfbxbdz.exe
PID 2504 wrote to memory of 2396	2504	Uvhnsfbxbdz.exe	powershell.exe
PID 2504 wrote to memory of 2396	2504	Uvhnsfbxbdz.exe	powershell.exe
PID 2504 wrote to memory of 2396	2504	Uvhnsfbxbdz.exe	powershell.exe
PID 2504 wrote to memory of 1052	2504	Uvhnsfbxbdz.exe	powershell.exe
PID 2504 wrote to memory of 1052	2504	Uvhnsfbxbdz.exe	powershell.exe
PID 2504 wrote to memory of 1052	2504	Uvhnsfbxbdz.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
"C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1460

C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
"C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2504

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2396

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Uvhnsfbxbdz.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1052

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Uvhnsfbxbdz.exe.log
Filesize
805B

MD5
9d0cacca373731660e8268a162d9d4ff

SHA1
a82111d00132cdf7ef46af5681601d55c6a0e17c

SHA256
95932f81206717ff86f0974ee37dc40d5d914f730f00a08344b4c1765d663394

SHA512
8c971ab501fc322b13f53b03325b2295e1eedb12b6d50a4225e6e3b4bf5128665b1a3d8b560a8b04f14bfa6f5cba41058e4f546139101fc303f3b8393f5ca485

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

MD5
ac4917a885cf6050b1a483e4bc4d2ea5

SHA1
b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f

SHA256
e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9

SHA512
092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

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

MD5
4d49e7265a5bdff46905394b45ec737e

SHA1
e64e84795754c56e67baf4a364538018ff56bd3c

SHA256
f4c9449a568a777fcc720ca14f2a0ebb79b40876177c214bfe15405600a1c3b3

SHA512
5b4dd1f8da1756214d2ef33baa021f44628c1a1eaa7c68763b3dd6cec78528b88069b4d13027773e1af5f768620c7a341d823755a1f343dcad9ce11298b43d08

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iew2fpb3.gws.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1052-4958-0x000000006FFD0000-0x000000007001C000-memory.dmp

Filesize
304KB

Download
memory/1052-4956-0x0000000005E00000-0x0000000006157000-memory.dmp

Filesize
3.3MB

Download
memory/1460-4892-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/1460-58-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-5-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-20-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-16-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-46-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-54-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-56-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-68-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-66-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-64-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-62-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-60-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-53-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-50-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-48-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-44-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-42-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-38-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-36-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-34-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-4-0x0000000006C20000-0x0000000006CB2000-memory.dmp

Filesize
584KB

Download
memory/1460-32-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-40-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-30-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-28-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-26-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-24-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-14-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-12-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-10-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-8-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-6-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-4891-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/1460-22-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-4893-0x0000000006E60000-0x0000000006ECE000-memory.dmp

Filesize
440KB

Download
memory/1460-4895-0x00000000056D0000-0x0000000005724000-memory.dmp

Filesize
336KB

Download
memory/1460-4894-0x0000000006ED0000-0x0000000006F1C000-memory.dmp

Filesize
304KB

Download
memory/1460-18-0x0000000006950000-0x0000000006B7C000-memory.dmp

Filesize
2.2MB

Download
memory/1460-0-0x0000000074EAE000-0x0000000074EAF000-memory.dmp

Filesize
4KB

Download
memory/1460-1-0x0000000000800000-0x0000000000C92000-memory.dmp

Filesize
4.6MB

Download
memory/1460-2-0x0000000006950000-0x0000000006B82000-memory.dmp

Filesize
2.2MB

Download
memory/1460-3-0x0000000007130000-0x00000000076D6000-memory.dmp

Filesize
5.6MB

Download
memory/1460-4900-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/2396-4934-0x0000000007650000-0x00000000076F4000-memory.dmp

Filesize
656KB

Download
memory/2396-4939-0x00000000079C0000-0x00000000079D1000-memory.dmp

Filesize
68KB

Download
memory/2396-4911-0x0000000005DE0000-0x0000000005E46000-memory.dmp

Filesize
408KB

Download
memory/2396-4909-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/2396-4912-0x0000000005EC0000-0x0000000006217000-memory.dmp

Filesize
3.3MB

Download
memory/2396-4921-0x0000000006460000-0x000000000647E000-memory.dmp

Filesize
120KB

Download
memory/2396-4922-0x0000000006490000-0x00000000064DC000-memory.dmp

Filesize
304KB

Download
memory/2396-4923-0x0000000007410000-0x0000000007444000-memory.dmp

Filesize
208KB

Download
memory/2396-4924-0x000000006FFD0000-0x000000007001C000-memory.dmp

Filesize
304KB

Download
memory/2396-4933-0x0000000006A40000-0x0000000006A5E000-memory.dmp

Filesize
120KB

Download
memory/2396-4906-0x0000000004FD0000-0x0000000005006000-memory.dmp

Filesize
216KB

Download
memory/2396-4935-0x0000000007DF0000-0x000000000846A000-memory.dmp

Filesize
6.5MB

Download
memory/2396-4936-0x00000000077B0000-0x00000000077CA000-memory.dmp

Filesize
104KB

Download
memory/2396-4937-0x0000000007820000-0x000000000782A000-memory.dmp

Filesize
40KB

Download
memory/2396-4938-0x0000000007A50000-0x0000000007AE6000-memory.dmp

Filesize
600KB

Download
memory/2396-4910-0x00000000055C0000-0x00000000055E2000-memory.dmp

Filesize
136KB

Download
memory/2396-4940-0x00000000079F0000-0x00000000079FE000-memory.dmp

Filesize
56KB

Download
memory/2396-4941-0x0000000007A00000-0x0000000007A15000-memory.dmp

Filesize
84KB

Download
memory/2396-4942-0x0000000007B10000-0x0000000007B2A000-memory.dmp

Filesize
104KB

Download
memory/2396-4943-0x0000000007AF0000-0x0000000007AF8000-memory.dmp

Filesize
32KB

Download
memory/2396-4946-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/2396-4908-0x0000000005640000-0x0000000005C6A000-memory.dmp

Filesize
6.2MB

Download
memory/2396-4907-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/2504-4901-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/2504-4902-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/2504-4903-0x00000000059A0000-0x0000000005A3C000-memory.dmp

Filesize
624KB

Download
memory/2504-4904-0x0000000005880000-0x00000000058E6000-memory.dmp

Filesize
408KB

Download
memory/2504-4905-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/2504-4968-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download
memory/2504-4969-0x0000000074EA0000-0x0000000075651000-memory.dmp

Filesize
7.7MB

Download