xworm | ac457a57600ba7fd011d94e6574b935a9589dd60b63d6ee6b5db67342ce5710e

Analysis

max time kernel
1796s
max time network
1775s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
01-07-2024 09:16

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General

Target

XClient.exe
Size

40KB
MD5

a2abffd7525046355e99e8673c3701fe
SHA1

6e1aaff66b5aac7a1c3df969b36da6141a95a4f9
SHA256

ac457a57600ba7fd011d94e6574b935a9589dd60b63d6ee6b5db67342ce5710e
SHA512

96b3b3750d9abaa627780eccb74dd870bb84ad1fb928233844054b2d24306f6f937f0762619d0b0209a8744aabbe278c773539fb8791987606427d8bfa767d22
SSDEEP

768:olc+DXf6pUAbfsW09Uf929NiTnFPw9in6rOphHuUF8M:oW+upUADfnuNYFY9in6rOpxf8M

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

amount-acceptance.gl.at.ply.gg:7420

Mutex

k2N8rf6LqCqdtF6c

Attributes

Install_directory
%ProgramData%
install_file
svhost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource yara_rule

behavioral5/memory/4760-1-0x0000000000CD0000-0x0000000000CE0000-memory.dmp family_xworm
C:\ProgramData\svhost.exe family_xworm
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

4308 powershell.exe
3652 powershell.exe
3780 powershell.exe
864 powershell.exe

resource	yara_rule
behavioral5/memory/4760-1-0x0000000000CD0000-0x0000000000CE0000-memory.dmp	family_xworm
C:\ProgramData\svhost.exe	family_xworm

pid	process
4308	powershell.exe
3652	powershell.exe
3780	powershell.exe
864	powershell.exe

Drops startup file 2 IoCs

Processes:

XClient.exe

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

Executes dropped EXE 30 IoCs

Processes:

svhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exe

pid	process
3412	svhost.exe
940	svhost.exe
2280	svhost.exe
1392	svhost.exe
3508	svhost.exe
1580	svhost.exe
4768	svhost.exe
2616	svhost.exe
1616	svhost.exe
3400	svhost.exe
5116	svhost.exe
4156	svhost.exe
4936	svhost.exe
3620	svhost.exe
4756	svhost.exe
4880	svhost.exe
2444	svhost.exe
4464	svhost.exe
4960	svhost.exe
1940	svhost.exe
4068	svhost.exe
4804	svhost.exe
4736	svhost.exe
4888	svhost.exe
1812	svhost.exe
3808	svhost.exe
2908	svhost.exe
908	svhost.exe
3748	svhost.exe
4692	svhost.exe

Adds Run key to start application 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Processes:

XClient.exe

description ioc process

Set value (str) \REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\ProgramData\\svhost.exe" XClient.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

4116 schtasks.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

3780 powershell.exe
3780 powershell.exe
864 powershell.exe
864 powershell.exe
4308 powershell.exe
4308 powershell.exe
3652 powershell.exe
3652 powershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\ProgramData\\svhost.exe"	XClient.exe

pid	process
4116	schtasks.exe

pid	process
3780	powershell.exe
3780	powershell.exe
864	powershell.exe
864	powershell.exe
4308	powershell.exe
4308	powershell.exe
3652	powershell.exe
3652	powershell.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exepowershell.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exesvhost.exe

description	pid	process
Token: SeDebugPrivilege	4760	XClient.exe
Token: SeDebugPrivilege	3780	powershell.exe
Token: SeDebugPrivilege	864	powershell.exe
Token: SeDebugPrivilege	4308	powershell.exe
Token: SeDebugPrivilege	3652	powershell.exe
Token: SeDebugPrivilege	4760	XClient.exe
Token: SeDebugPrivilege	3412	svhost.exe
Token: SeDebugPrivilege	940	svhost.exe
Token: SeDebugPrivilege	2280	svhost.exe
Token: SeDebugPrivilege	1392	svhost.exe
Token: SeDebugPrivilege	3508	svhost.exe
Token: SeDebugPrivilege	1580	svhost.exe
Token: SeDebugPrivilege	4768	svhost.exe
Token: SeDebugPrivilege	2616	svhost.exe
Token: SeDebugPrivilege	1616	svhost.exe
Token: SeDebugPrivilege	3400	svhost.exe
Token: SeDebugPrivilege	5116	svhost.exe
Token: SeDebugPrivilege	4156	svhost.exe
Token: SeDebugPrivilege	4936	svhost.exe
Token: SeDebugPrivilege	3620	svhost.exe
Token: SeDebugPrivilege	4756	svhost.exe
Token: SeDebugPrivilege	4880	svhost.exe
Token: SeDebugPrivilege	2444	svhost.exe
Token: SeDebugPrivilege	4464	svhost.exe
Token: SeDebugPrivilege	4960	svhost.exe
Token: SeDebugPrivilege	1940	svhost.exe
Token: SeDebugPrivilege	4068	svhost.exe
Token: SeDebugPrivilege	4804	svhost.exe
Token: SeDebugPrivilege	4736	svhost.exe
Token: SeDebugPrivilege	4888	svhost.exe
Token: SeDebugPrivilege	1812	svhost.exe
Token: SeDebugPrivilege	3808	svhost.exe
Token: SeDebugPrivilege	2908	svhost.exe
Token: SeDebugPrivilege	908	svhost.exe
Token: SeDebugPrivilege	3748	svhost.exe
Token: SeDebugPrivilege	4692	svhost.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

XClient.exe

description	pid	process	target process
PID 4760 wrote to memory of 3780	4760	XClient.exe	powershell.exe
PID 4760 wrote to memory of 3780	4760	XClient.exe	powershell.exe
PID 4760 wrote to memory of 864	4760	XClient.exe	powershell.exe
PID 4760 wrote to memory of 864	4760	XClient.exe	powershell.exe
PID 4760 wrote to memory of 4308	4760	XClient.exe	powershell.exe
PID 4760 wrote to memory of 4308	4760	XClient.exe	powershell.exe
PID 4760 wrote to memory of 3652	4760	XClient.exe	powershell.exe
PID 4760 wrote to memory of 3652	4760	XClient.exe	powershell.exe
PID 4760 wrote to memory of 4116	4760	XClient.exe	schtasks.exe
PID 4760 wrote to memory of 4116	4760	XClient.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4760

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\XClient.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 -ExclusionProcess 'XClient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:864

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svhost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4308

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3652

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\ProgramData\svhost.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4116

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3412

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:940

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2280

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1392

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3508

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1580

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4768

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2616

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1616

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3400

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5116

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4156

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4936

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3620

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4756

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4880

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2444

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4464

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4960

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1940

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4068

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4804

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4736

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4888

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1812

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3808

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2908

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:908

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3748

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4692

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\ProgramData\svhost.exe
Filesize
40KB

MD5
a2abffd7525046355e99e8673c3701fe

SHA1
6e1aaff66b5aac7a1c3df969b36da6141a95a4f9

SHA256
ac457a57600ba7fd011d94e6574b935a9589dd60b63d6ee6b5db67342ce5710e

SHA512
96b3b3750d9abaa627780eccb74dd870bb84ad1fb928233844054b2d24306f6f937f0762619d0b0209a8744aabbe278c773539fb8791987606427d8bfa767d22

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svhost.exe.log
Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
e3840d9bcedfe7017e49ee5d05bd1c46

SHA1
272620fb2605bd196df471d62db4b2d280a363c6

SHA256
3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

SHA512
76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
050567a067ffea4eb40fe2eefebdc1ee

SHA1
6e1fb2c7a7976e0724c532449e97722787a00fec

SHA256
3952d5b543e5cb0cb84014f4ad9f5f1b7166f592d28640cbc3d914d0e6f41d2e

SHA512
341ad71ef7e850b10e229666312e4bca87a0ed9fe25ba4b0ab65661d5a0efa855db0592153106da07134d8fc2c6c0e44709bf38183c9a574a1fa543189971259

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
781da0576417bf414dc558e5a315e2be

SHA1
215451c1e370be595f1c389f587efeaa93108b4c

SHA256
41a5aef8b0bbeea2766f40a7bba2c78322379f167c610f7055ccb69e7db030fe

SHA512
24e283aa30a2903ebe154dad49b26067a45e46fec57549ad080d3b9ec3f272044efaaed3822d067837f5521262192f466c47195ffe7f75f8c7c5dcf3159ea737

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dubf0kv0.dk1.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3780-11-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/3780-16-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/3780-13-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/3780-12-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/3780-10-0x0000028C371B0000-0x0000028C371D2000-memory.dmp

Filesize
136KB

Download
memory/4760-0-0x00007FFA20DB3000-0x00007FFA20DB5000-memory.dmp

Filesize
8KB

Download
memory/4760-52-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/4760-56-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/4760-1-0x0000000000CD0000-0x0000000000CE0000-memory.dmp

Filesize
64KB

Download