xworm | 370ea3e983c58ed74d3ee9ec54663ff29dba195a040d0fe56c20b7554cf18472

General

Target

XClient.exe
Size

216KB
MD5

a6d3d1061fb61a90a933acceb1af5358
SHA1

ea62a67f7a0726e76e3a849652672dd95868bb00
SHA256

370ea3e983c58ed74d3ee9ec54663ff29dba195a040d0fe56c20b7554cf18472
SHA512

9341af271094515df448e9ee9273e2d8a3b1101feaaeef64838c2ff908bfdc56b6afc688f117c971e1eb5adc5c8304cec936bac20ff03c23430a6e945c55637d
SSDEEP

3072:lBxhsxnroxM7btQ+ROU0Z5hh4DAiKeNhK1pEeGklktiVMPneSYHl:vx+nr2M7bK+YLheDAiKeNkLzblk

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

2.tcp.eu.ngrok.io:16807

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2240-1-0x0000000000FA0000-0x0000000000FDC000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\svchost.exe	family_xworm
behavioral1/memory/536-38-0x0000000000F40000-0x0000000000F7C000-memory.dmp	family_xworm
behavioral1/memory/948-40-0x00000000003A0000-0x00000000003DC000-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

2108 powershell.exe
1844 powershell.exe
2388 powershell.exe
2516 powershell.exe

pid	process
2108	powershell.exe
1844	powershell.exe
2388	powershell.exe
2516	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

536 svchost.exe
948 svchost.exe

pid	process
536	svchost.exe
948	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-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.exe

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

Web Service
T1102

Processes:

flow ioc

6 2.tcp.eu.ngrok.io
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
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2724 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid process

2388 powershell.exe
2516 powershell.exe
2108 powershell.exe
1844 powershell.exe
2240 XClient.exe

flow	ioc
6	2.tcp.eu.ngrok.io

flow	ioc
4	ip-api.com

pid	process
2724	schtasks.exe

pid	process
2388	powershell.exe
2516	powershell.exe
2108	powershell.exe
1844	powershell.exe
2240	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

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

description	pid	process
Token: SeDebugPrivilege	2240	XClient.exe
Token: SeDebugPrivilege	2388	powershell.exe
Token: SeDebugPrivilege	2516	powershell.exe
Token: SeDebugPrivilege	2108	powershell.exe
Token: SeDebugPrivilege	1844	powershell.exe
Token: SeDebugPrivilege	2240	XClient.exe
Token: SeDebugPrivilege	536	svchost.exe
Token: SeDebugPrivilege	948	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

2240 XClient.exe

pid	process
2240	XClient.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

XClient.exetaskeng.exe

description	pid	process	target process
PID 2240 wrote to memory of 2388	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2388	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2388	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2516	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2516	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2516	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2108	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2108	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2108	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 1844	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 1844	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 1844	2240	XClient.exe	powershell.exe
PID 2240 wrote to memory of 2724	2240	XClient.exe	schtasks.exe
PID 2240 wrote to memory of 2724	2240	XClient.exe	schtasks.exe
PID 2240 wrote to memory of 2724	2240	XClient.exe	schtasks.exe
PID 2012 wrote to memory of 536	2012	taskeng.exe	svchost.exe
PID 2012 wrote to memory of 536	2012	taskeng.exe	svchost.exe
PID 2012 wrote to memory of 536	2012	taskeng.exe	svchost.exe
PID 2012 wrote to memory of 948	2012	taskeng.exe	svchost.exe
PID 2012 wrote to memory of 948	2012	taskeng.exe	svchost.exe
PID 2012 wrote to memory of 948	2012	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:2240

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:2388

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:2516

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:2108

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:1844

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⤵
- Creates scheduled task(s)
PID:2724

C:\Windows\system32\taskeng.exe
taskeng.exe {7C25F853-6135-46D2-B96E-900000BEA75C} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2012

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:536

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize
7KB

MD5
a6ea7fd62544ea83501292e8d79e9492

SHA1
63ba7328eafcc80bbf33e8b70f64a8f665ca20da

SHA256
2b0749738d4eafb92736ec1588309aefdcc13a7421cd4d8e40ebf5b95cb2a26b

SHA512
ebdcb7d1cb70282ab0afa221c9ed32eae34c2db7132aead7fd2fd4095ef8afb566dfbd088481c8262bf4991f6f429997f4374df703f7564654c55c820bd44517

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
Filesize
216KB

MD5
a6d3d1061fb61a90a933acceb1af5358

SHA1
ea62a67f7a0726e76e3a849652672dd95868bb00

SHA256
370ea3e983c58ed74d3ee9ec54663ff29dba195a040d0fe56c20b7554cf18472

SHA512
9341af271094515df448e9ee9273e2d8a3b1101feaaeef64838c2ff908bfdc56b6afc688f117c971e1eb5adc5c8304cec936bac20ff03c23430a6e945c55637d

Download Submit
\??\PIPE\srvsvc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/536-38-0x0000000000F40000-0x0000000000F7C000-memory.dmp

Filesize
240KB

Download
memory/948-40-0x00000000003A0000-0x00000000003DC000-memory.dmp

Filesize
240KB

Download
memory/2240-2-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

Filesize
9.9MB

Download
memory/2240-0-0x000007FEF5433000-0x000007FEF5434000-memory.dmp

Filesize
4KB

Download
memory/2240-32-0x000007FEF5433000-0x000007FEF5434000-memory.dmp

Filesize
4KB

Download
memory/2240-33-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

Filesize
9.9MB

Download
memory/2240-1-0x0000000000FA0000-0x0000000000FDC000-memory.dmp

Filesize
240KB

Download
memory/2388-7-0x0000000002950000-0x00000000029D0000-memory.dmp

Filesize
512KB

Download
memory/2388-8-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2388-9-0x0000000002690000-0x0000000002698000-memory.dmp

Filesize
32KB

Download
memory/2516-15-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2516-16-0x00000000028E0000-0x00000000028E8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads