Malware Analysis Report

2024-09-11 13:53

Sample ID 240615-f4q3sazdlc
Target Uvhnsfbxbdz.exe
SHA256 d2a3936965e20932965c64a29ddb12d5d7ecd9a4fd2a074b374da3637881e520
Tags
xworm execution persistence rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d2a3936965e20932965c64a29ddb12d5d7ecd9a4fd2a074b374da3637881e520

Threat Level: Known bad

The file Uvhnsfbxbdz.exe was found to be: Known bad.

Malicious Activity Summary

xworm execution persistence rat trojan

Detect Xworm Payload

Xworm

Command and Scripting Interpreter: PowerShell

Adds Run key to start application

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Suspicious use of SetThreadContext

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Command and Scripting Interpreter
T1059
PowerShell
T1059.001
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-15 05:25

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-15 05:25

Reported

2024-06-15 05:27

Platform

win11-20240508-en

Max time kernel

58s

Max time network

62s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe"

Signatures

Detect Xworm Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xworm

trojan rat xworm

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
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" C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A pastebin.com N/A N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1460 set thread context of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1460 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
PID 1460 wrote to memory of 2504 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe
PID 2504 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2504 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2504 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2504 wrote to memory of 1052 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2504 wrote to memory of 1052 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
PID 2504 wrote to memory of 1052 N/A C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe

"C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe"

C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe

"C:\Users\Admin\AppData\Local\Temp\Uvhnsfbxbdz.exe"

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'

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Uvhnsfbxbdz.exe'

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 pastebin.com udp

Files

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

MD5 9d0cacca373731660e8268a162d9d4ff
SHA1 a82111d00132cdf7ef46af5681601d55c6a0e17c
SHA256 95932f81206717ff86f0974ee37dc40d5d914f730f00a08344b4c1765d663394
SHA512 8c971ab501fc322b13f53b03325b2295e1eedb12b6d50a4225e6e3b4bf5128665b1a3d8b560a8b04f14bfa6f5cba41058e4f546139101fc303f3b8393f5ca485

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

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

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

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

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

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

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

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

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

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

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

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_iew2fpb3.gws.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

MD5 ac4917a885cf6050b1a483e4bc4d2ea5
SHA1 b1c0a9f27bd21c6bbb8e9be70db8777b4a2a640f
SHA256 e39062a62c3c7617feeeff95ea8a0be51104a0d36f46e44eea22556fda74d8d9
SHA512 092c67a3ecae1d187cad72a8ea1ea37cb78a0cf79c2cd7fb88953e5990669a2e871267015762fd46d274badb88ac0c1d73b00f1df7394d89bed48a3a45c2ba3d

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

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

MD5 4d49e7265a5bdff46905394b45ec737e
SHA1 e64e84795754c56e67baf4a364538018ff56bd3c
SHA256 f4c9449a568a777fcc720ca14f2a0ebb79b40876177c214bfe15405600a1c3b3
SHA512 5b4dd1f8da1756214d2ef33baa021f44628c1a1eaa7c68763b3dd6cec78528b88069b4d13027773e1af5f768620c7a341d823755a1f343dcad9ce11298b43d08

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

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

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