xworm | c43fa1f0bbfbb8f91d9a339b97922494bf790c6b58bf973b56836ef52a3196cd

max time kernel
83s
max time network
82s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
03/05/2024, 18:02

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Reason

Machine shutdown

General

Target
ent.exe
Size 44KB
Sample240503-wmldzacc8x
SHA256 c43fa1f0bbfbb8f91d9a339b97922494bf790c6b58bf973b56836ef52a3196cd
MD5 211661398474b9c96a1d704823d0e552
SHA1 5afcd1a87a69ea1c84a06fdf7079660133ceb28a
SHA512 51717923b8d063874d5216db14adbe506826715773845c17961c5e52ed072380ea8b9b75d55559f855e6f42c35c8dd984c055eb3d1f7bec02c62463423c96666
SSDEEP 768:trlZa605WoOu+tpBERbGTHDUgkbZCfr2A33O3sh0l0E:tfq0u+tpKbAjXkbZCjjO3s60E
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

Attributes

install_file
USB.exe
pastebin_url
https://pastebin.com/raw/XzLzRHpk

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3220-1-0x00000000002E0000-0x00000000002F2000-memory.dmp	family_xworm

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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
1	pastebin.com
2	pastebin.com
4	0.tcp.eu.ngrok.io

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3220	ent.exe
Token: SeShutdownPrivilege	4840	shutdown.exe
Token: SeRemoteShutdownPrivilege	4840	shutdown.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1496	LogonUI.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3220 wrote to memory of 4840	3220	ent.exe	76
PID 3220 wrote to memory of 4840	3220	ent.exe	76

C:\Users\Admin\AppData\Local\Temp\ent.exe
"C:\Users\Admin\AppData\Local\Temp\ent.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3220
- C:\Windows\SYSTEM32\shutdown.exe
  shutdown.exe /f /s /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4840

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0 /state0:0xa3aef055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/3220-0-0x00007FF80AF13000-0x00007FF80AF14000-memory.dmp

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memory/3220-1-0x00000000002E0000-0x00000000002F2000-memory.dmp

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memory/3220-2-0x00007FF80AF10000-0x00007FF80B8FC000-memory.dmp

Download

memory/3220-3-0x00007FF80AF13000-0x00007FF80AF14000-memory.dmp

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memory/3220-4-0x00007FF80AF10000-0x00007FF80B8FC000-memory.dmp

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memory/3220-5-0x00007FF80AF10000-0x00007FF80B8FC000-memory.dmp

Download

Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads