xworm | 97f556113766e66bd5b5ca123a9b0b4aa56aa273ceac9202a9de3d77ffdec287

Analysis

max time kernel
171s
max time network
175s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
18/08/2024, 01:00

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General

Target

Solarabootstrapper.exe
Size

34KB
MD5

51d03d9a1fc6d52b74e2fa53438dee20
SHA1

a193c629a250170988d2a1725f7126db0ac2469b
SHA256

97f556113766e66bd5b5ca123a9b0b4aa56aa273ceac9202a9de3d77ffdec287
SHA512

5302d3b1cd8610a20194f8ce8b2e8fb858b5f5fdcebfd1f9504eba399e368395e805e684a43afc71cbe29b259ff8451e6f03ad0024ee9818b0b9d0a4e3bec5e8
SSDEEP

768:EiAXT2ts9tAxC4CaV9FZ9jq4cOjhY/4/:TAj2tsslJzFZ9jq9OjqQ/

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

la-michael.gl.at.ply.gg:65463

Mutex

641UIwoUJK0Mht9q

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4556-1-0x0000000000680000-0x000000000068E000-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\Windows Defender.lnk	Solarabootstrapper.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Defender.lnk	Solarabootstrapper.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Panther\UnattendGC\setupact.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\setuperr.log	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagerr.xml	UserOOBEBroker.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagwrn.xml	UserOOBEBroker.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FileCoAuth.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4556	Solarabootstrapper.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3164	OpenWith.exe

C:\Users\Admin\AppData\Local\Temp\Solarabootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\Solarabootstrapper.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
PID:4556

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:3732

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc
1⤵
PID:1592

C:\Windows\System32\oobe\UserOOBEBroker.exe
C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding
1⤵
- Drops file in Windows directory
PID:4492

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe
C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding
1⤵
- System Location Discovery: System Language Discovery
PID:1364

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
PID:3164

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4556-0-0x00007FFACD093000-0x00007FFACD095000-memory.dmp

Filesize
8KB

Download
memory/4556-1-0x0000000000680000-0x000000000068E000-memory.dmp

Filesize
56KB

Download
memory/4556-5-0x00007FFACD090000-0x00007FFACDB52000-memory.dmp

Filesize
10.8MB

Download
memory/4556-6-0x00007FFACD093000-0x00007FFACD095000-memory.dmp

Filesize
8KB

Download
memory/4556-7-0x00007FFACD090000-0x00007FFACDB52000-memory.dmp

Filesize
10.8MB

Download