xworm | f590869661358039931036fcd11efede733fd9ef8ded471017f950ce9e173eb1

General

Target

WindowsHost.exe
Size

38KB
MD5

258eb7d90709b608979e3b0bbd5af620
SHA1

d35e9ee78fe5cfa70685d73224a5756629aca0e5
SHA256

f590869661358039931036fcd11efede733fd9ef8ded471017f950ce9e173eb1
SHA512

7cc264cc757b5e06cc483bf9d56668d24361ad04054d512a85d98ab39c0479e7c86565ac39601eb7c9d1368bf06ac3885b42542c4ea545e73677d1ac2e3de8f7
SSDEEP

768:/V7Kjkq9PMXOh5G7m9NFfZk7FWPB9WNOMh2aQkry:/xq/oa5PFyFO9WNOM4sy

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

america-surrey.gl.at.ply.gg:54338

Mutex

uqf0RwmqN0bmwjTI

Attributes

Install_directory
%LocalAppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3656-1-0x0000000000EA0000-0x0000000000EB0000-memory.dmp	family_xworm
behavioral2/files/0x0010000000023adc-23.dat	family_xworm

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

Drops startup file 2 IoCs

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

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3656	WindowsHost.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3656	WindowsHost.exe
Token: SeDebugPrivilege	3656	WindowsHost.exe
Token: SeDebugPrivilege	1932	taskmgr.exe
Token: SeSystemProfilePrivilege	1932	taskmgr.exe
Token: SeCreateGlobalPrivilege	1932	taskmgr.exe
Token: 33	1932	taskmgr.exe
Token: SeIncBasePriorityPrivilege	1932	taskmgr.exe

Suspicious use of FindShellTrayWindow 36 IoCs

pid	Process
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe

Suspicious use of SendNotifyMessage 36 IoCs

pid	Process
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe
1932	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3656	WindowsHost.exe

C:\Users\Admin\AppData\Local\Temp\WindowsHost.exe
"C:\Users\Admin\AppData\Local\Temp\WindowsHost.exe"
1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3656

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\svchost.exe

Filesize
38KB

MD5
258eb7d90709b608979e3b0bbd5af620

SHA1
d35e9ee78fe5cfa70685d73224a5756629aca0e5

SHA256
f590869661358039931036fcd11efede733fd9ef8ded471017f950ce9e173eb1

SHA512
7cc264cc757b5e06cc483bf9d56668d24361ad04054d512a85d98ab39c0479e7c86565ac39601eb7c9d1368bf06ac3885b42542c4ea545e73677d1ac2e3de8f7

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk

Filesize
962B

MD5
7c5cb74c27648ab7ca85c9a3ef2cbc73

SHA1
15dd7ac1763e67bdd5f680f24228dbfb0ce6a76b

SHA256
5919d1c6379cb7ef533b57f0ac41d65ef94e896a5f5338e531ba84cb5de9ed8b

SHA512
0f79d94552de2418eaf4bbe47a693d858ce2d0cc53495a93f8a722f47abc90c02e6a981b9da245cab0c1d30066c76e43526841853ea5eb4531e1c75275d7c5f1

Download Submit
memory/1932-18-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-21-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-15-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-9-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-10-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-11-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-17-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-16-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-20-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/1932-19-0x0000029EF52E0000-0x0000029EF52E1000-memory.dmp

Filesize
4KB

Download
memory/3656-0-0x00007FFB85243000-0x00007FFB85245000-memory.dmp

Filesize
8KB

Download
memory/3656-7-0x00007FFB85243000-0x00007FFB85245000-memory.dmp

Filesize
8KB

Download
memory/3656-8-0x00007FFB85240000-0x00007FFB85D01000-memory.dmp

Filesize
10.8MB

Download
memory/3656-6-0x00007FFB85240000-0x00007FFB85D01000-memory.dmp

Filesize
10.8MB

Download
memory/3656-1-0x0000000000EA0000-0x0000000000EB0000-memory.dmp

Filesize
64KB

Download

Analysis

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