xworm | 97348373111ca04f11967c85f6af5c81bad013d0f48588509ad8e0a69a9efecb

General

Target

XClient.exe
Size

159KB
MD5

11f839617cf012397407fbe61b098887
SHA1

465debfbb666272611191d928c3ef21b9f4ca176
SHA256

97348373111ca04f11967c85f6af5c81bad013d0f48588509ad8e0a69a9efecb
SHA512

b1f3d3b0b93e8c02c30551ebf70f067fe522c0afca96a585fb984897c641bdb4614b3392d63b6f6b072ba9181a06f99b3707447c1e3ef661483940f82841e91f
SSDEEP

3072:GwmAm5efb7bMOQHURwBz65/M6If+3Js+3JFkKeTno:ftfbvHwxBt25

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

low-ivory.gl.at.ply.gg:34642

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/348-1-0x00000000002B0000-0x00000000002DE000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\svchost.exe	family_xworm
behavioral1/memory/2808-38-0x0000000001080000-0x00000000010AE000-memory.dmp	family_xworm
behavioral1/memory/2928-41-0x00000000010B0000-0x00000000010DE000-memory.dmp	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

2756 powershell.exe
2660 powershell.exe
1540 powershell.exe
2584 powershell.exe

pid	process
2756	powershell.exe
2660	powershell.exe
1540	powershell.exe
2584	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\svchost.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	XClient.exe

Executes dropped EXE 2 IoCs

Processes:

svchost.exesvchost.exe

pid process

2808 svchost.exe
2928 svchost.exe

pid	process
2808	svchost.exe
2928	svchost.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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 ip-api.com
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

580 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid process

2756 powershell.exe
2660 powershell.exe
1540 powershell.exe
2584 powershell.exe
348 XClient.exe

flow	ioc
4	ip-api.com

pid	process
580	schtasks.exe

pid	process
2756	powershell.exe
2660	powershell.exe
1540	powershell.exe
2584	powershell.exe
348	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

XClient.exepowershell.exepowershell.exepowershell.exepowershell.exesvchost.exesvchost.exe

description	pid	process
Token: SeDebugPrivilege	348	XClient.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeDebugPrivilege	1540	powershell.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	348	XClient.exe
Token: SeDebugPrivilege	2808	svchost.exe
Token: SeDebugPrivilege	2928	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

348 XClient.exe

pid	process
348	XClient.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

XClient.exetaskeng.exe

description	pid	process	target process
PID 348 wrote to memory of 2756	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 2756	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 2756	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 2660	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 2660	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 2660	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 1540	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 1540	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 1540	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 2584	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 2584	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 2584	348	XClient.exe	powershell.exe
PID 348 wrote to memory of 580	348	XClient.exe	schtasks.exe
PID 348 wrote to memory of 580	348	XClient.exe	schtasks.exe
PID 348 wrote to memory of 580	348	XClient.exe	schtasks.exe
PID 1968 wrote to memory of 2808	1968	taskeng.exe	svchost.exe
PID 1968 wrote to memory of 2808	1968	taskeng.exe	svchost.exe
PID 1968 wrote to memory of 2808	1968	taskeng.exe	svchost.exe
PID 1968 wrote to memory of 2928	1968	taskeng.exe	svchost.exe
PID 1968 wrote to memory of 2928	1968	taskeng.exe	svchost.exe
PID 1968 wrote to memory of 2928	1968	taskeng.exe	svchost.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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:348

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:2756

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:2660

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\Roaming\svchost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1540

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2584

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:580

C:\Windows\system32\taskeng.exe
taskeng.exe {F45FB213-2E6F-4482-85D1-73F97A2317AF} S-1-5-21-3450744190-3404161390-554719085-1000:PDIZKVQX\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1968

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2808

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
c4948c512620ae95abfa1f8bef5f2fcb

SHA1
ccdd976cb92da2973726dd2161e5f122f23e943d

SHA256
976fd50832e0c422aada58cd5c344de86c8075dd8bb6d23b077ae4072b97cf01

SHA512
42d0056303e3b8cec1a94ab181ae6321be1aa598be69423eabc698ab08fa68a60c6ffc06f64e0282ded9792f501c6846fb0af81aba7ae44a120490ef5daf5e4d

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
159KB

MD5
11f839617cf012397407fbe61b098887

SHA1
465debfbb666272611191d928c3ef21b9f4ca176

SHA256
97348373111ca04f11967c85f6af5c81bad013d0f48588509ad8e0a69a9efecb

SHA512
b1f3d3b0b93e8c02c30551ebf70f067fe522c0afca96a585fb984897c641bdb4614b3392d63b6f6b072ba9181a06f99b3707447c1e3ef661483940f82841e91f

Download Submit
\??\PIPE\srvsvc

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/348-2-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download
memory/348-0-0x000007FEF5973000-0x000007FEF5974000-memory.dmp

Filesize
4KB

Download
memory/348-33-0x000007FEF5973000-0x000007FEF5974000-memory.dmp

Filesize
4KB

Download
memory/348-34-0x000007FEF5970000-0x000007FEF635C000-memory.dmp

Filesize
9.9MB

Download
memory/348-1-0x00000000002B0000-0x00000000002DE000-memory.dmp

Filesize
184KB

Download
memory/2660-15-0x000000001B600000-0x000000001B8E2000-memory.dmp

Filesize
2.9MB

Download
memory/2660-16-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2756-7-0x0000000002D10000-0x0000000002D90000-memory.dmp

Filesize
512KB

Download
memory/2756-8-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2756-9-0x00000000026E0000-0x00000000026E8000-memory.dmp

Filesize
32KB

Download
memory/2808-38-0x0000000001080000-0x00000000010AE000-memory.dmp

Filesize
184KB

Download
memory/2928-41-0x00000000010B0000-0x00000000010DE000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads