xworm | 638df2ca2301358216da628a6482dd75b8c4cbdb356cb5a05b1ad0a99076ab96

Analysis

user interaction
yes
max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
03/05/2026, 17:09

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General

Target
Velocity.exe
Size 66KB
Sample260503-vpcn6ses31
SHA256 638df2ca2301358216da628a6482dd75b8c4cbdb356cb5a05b1ad0a99076ab96
MD5 364f34cebdbc8456cd8e21316cba13c6
SHA1 aa751c5c6496ac5560ca4cde03d068588e791d49
SHA512 334f8db660365d595e3f96f297ecf99acd2be546481b863526be04de335f7d94c07715352e2dca241c6e1218eb3ac40d7a2fa84f30dacee453f8b541a512b7ba
SSDEEP 1536:2ONzXbJAd/F0uc/xd7GNnZb8bDVkYiQ6YNOvUsh:2OZe/SuczGNn6bDVe8OvHh
TLSH
T184639E6C77E94529E0FF2AB228E26656C738F3534903E72F78C9015B1617A9DCD407E2
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

aferistin-41691.portmap.host:41691

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

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

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4984-0-0x0000000000D10000-0x0000000000D26000-memory.dmp	family_xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3780	powershell.exe
3584	powershell.exe
4828	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2714754311-527593155-1440850301-1000\Control Panel\International\Geo\Nation	Velocity.exe

Drops startup file 2 IoCs

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2714754311-527593155-1440850301-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Velocity = "C:\\Users\\Admin\\AppData\\Roaming\\Velocity.exe"	Velocity.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
4828	powershell.exe
4828	powershell.exe
3780	powershell.exe
3780	powershell.exe
3584	powershell.exe
3584	powershell.exe
4984	Velocity.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4984	Velocity.exe
Token: SeDebugPrivilege	4828	powershell.exe
Token: SeDebugPrivilege	3780	powershell.exe
Token: SeDebugPrivilege	3584	powershell.exe
Token: SeDebugPrivilege	4984	Velocity.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4984	Velocity.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 4828	4984	Velocity.exe	84
PID 4984 wrote to memory of 3780	4984	Velocity.exe	86
PID 4984 wrote to memory of 3584	4984	Velocity.exe	88

C:\Users\Admin\AppData\Local\Temp\Velocity.exe
"C:\Users\Admin\AppData\Local\Temp\Velocity.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:4984
- 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\Velocity.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4828
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Velocity.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3780
- 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\Velocity.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3584

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
TLSH
T1CE51EE323375B1E888167F071E681A8053BF4355EA94AF1CB698621ED93641B9F222F3
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 7080416635d28e808bf5d5fba757a0b3f062c6ab0199e62490180d928ce98688
MD5 30c59a496592072189472a8b31285179
SHA1 42f8e753ae351c84b6148204bf1fd6c36f990b2a
SHA512 355ea0e296a8d622f10fe66fe2a962aabbde9b667f09e27b1e8c99cadf97e806daa878e53214012874b56c288bceb246985084006d3009fcb26174be291aa06a
TLSH
T16F112223F38C8920CC96163A509DAC5172B686CB81AEDF9F7FC0C210A5BF584CB61294
MD5 SHA1 SHA512 TLSH

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165
MD5 a7cc007980e419d553568a106210549a
SHA1 c03099706b75071f36c3962fcc60a22f197711e0
SHA512 b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666
TLSH
T106112223F78C8921CC961639509DAC5172B686CB81AFDE9F7FC0D210E1BF584CB61194
MD5 SHA1 SHA512 TLSH

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__PSScriptPolicyTest_wxwu4ifq.25b.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wxwu4ifq.25b.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

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memory/3584-34-0x0000029079240000-0x000002907924C000-memory.dmp

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memory/3780-24-0x0000020CCD870000-0x0000020CCD87C000-memory.dmp

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memory/4828-3-0x0000019952A60000-0x0000019952A82000-memory.dmp

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memory/4828-13-0x0000019950FF0000-0x0000019950FFC000-memory.dmp

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memory/4828-1-0x0000019952A50000-0x0000019952A60000-memory.dmp

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memory/4828-2-0x0000019952A50000-0x0000019952A60000-memory.dmp

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memory/4984-0-0x0000000000D10000-0x0000000000D26000-memory.dmp

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memory/4984-40-0x000000001B9F0000-0x000000001BA00000-memory.dmp

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memory/4984-41-0x00000000014C0000-0x00000000014CC000-memory.dmp

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memory/4984-42-0x000000001B990000-0x000000001B9CB000-memory.dmp

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memory/4984-43-0x000000001B9F0000-0x000000001BA00000-memory.dmp

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