xworm | 002a55a722eb437d66039df4b8e16b32baa59ba4f3a180c0d5a0514e01dc7377

Resubmissions

03/05/2024, 17:26

240503-vz54gaef9610

03/05/2024, 17:25

03/05/2024, 17:21

03/05/2024, 17:19

03/05/2024, 17:17

03/05/2024, 17:11

Analysis

max time kernel
38s
max time network
39s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
03/05/2024, 17:17

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Reason

Machine shutdown

General

Target
54335453425234.exe
Size 57KB
Sample240503-vt5krabf8x
SHA256 002a55a722eb437d66039df4b8e16b32baa59ba4f3a180c0d5a0514e01dc7377
MD5 3db6691099ca8a85cb08e68dc8eed38a
SHA1 9592497a91fd06c82e0082c61ebff8688b4932dc
SHA512 ba0778c135da545a10cfeea230263493d2339e19b61d2a9a2db93f805a620a79381c2d6be82ee1ff199b4bb490013e624b2d68e937966615c6ea64a67c6cb60e
SSDEEP 1536:JiNNpIaOeW6fBnwL36ZOR8Rngkb/kiqnLx3oXyDmOJHLFu/:MNNpzW6fBwL6/gkb/O6lOJk/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

0.tcp.eu.ngrok.io:15487

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2140-1-0x0000000000FC0000-0x0000000000FD4000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	54335453425234.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	54335453425234.exe

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

Web Service

T1102

flow	ioc
1	0.tcp.eu.ngrok.io

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292114432"	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\EnableWindowColorization = "183"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = 99ebff004cc2ff000091f8000078d4000067c000003e9200001a6800f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292114432"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365268"	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\ColorizationAfterglow = "3288365268"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	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\CurrentVersion\Explorer\Accent\StartColorMenu = "4290799360"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000_Classes\Local Settings	54335453425234.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
4648	NOTEPAD.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	54335453425234.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4176	LogonUI.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 4648	2140	54335453425234.exe	81
PID 2140 wrote to memory of 4648	2140	54335453425234.exe	81

C:\Users\Admin\AppData\Local\Temp\54335453425234.exe
"C:\Users\Admin\AppData\Local\Temp\54335453425234.exe"
1⤵
- Drops startup file
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\ksvmvd.txt
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:4648

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3a0e855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

ksvmvd.txt

Path C:\Users\Admin\AppData\Local\Temp\ksvmvd.txt
Size 73B
SHA256 89958b18030ce0c7df6fbfd12060ad8352ed9db5c15d322fcefcf3fc3989519d
MD5 14971ff50a2c64ab66b3c75dbc7d4843
SHA1 06ccc16cc89657fcb273ce32a9e08e390bb941b2
SHA512 1aa3ec9efab14b0aca49605e721555e5f4c04dc289faa5513948bca004da9c8c7ed615f1d75d40b2ab14dab03500bdb3939c497b8e10bf67378e1557556c3f7e
MD5 SHA1 SHA512

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memory/2140-0-0x00007FFA4ADF3000-0x00007FFA4ADF5000-memory.dmp

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memory/2140-1-0x0000000000FC0000-0x0000000000FD4000-memory.dmp

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memory/2140-6-0x00007FFA4ADF0000-0x00007FFA4B8B2000-memory.dmp

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memory/2140-10-0x000000001BDD0000-0x000000001BDDC000-memory.dmp

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memory/2140-11-0x00007FFA4ADF0000-0x00007FFA4B8B2000-memory.dmp

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memory/2140-12-0x00007FFA4ADF0000-0x00007FFA4B8B2000-memory.dmp

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Resubmissions

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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