xworm | 6b0c02766fe5cce2ba045b22a4d22e1be715f36de87bcf37aef6819c9c2acc6d

General

Target

XClient2.exe
Size

82KB
MD5

04bfb56e7cfe27e2fb1dc4be72b705f5
SHA1

324e46eb02a4561536d9f5775e84592b85fd0f22
SHA256

6b0c02766fe5cce2ba045b22a4d22e1be715f36de87bcf37aef6819c9c2acc6d
SHA512

c80df99774f899f48b0150a32b86ba7c60337c99bbe6f60f57c8a7963fb50ce7c2259dd171353257abe21bce94e2ed33b2860ba60e0cc677519defc4e08e2015
SSDEEP

1536:cajDKkkG+Ng/rhqNGqdQAbmnGTDxE6S+Fj1ypOFEgLAMB/ddK:Rd1+ejloQAbmGTtypOKuBDK

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:48534

localhost:48534

domain-vote.gl.at.ply.gg:48534

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3936-1-0x0000000000D70000-0x0000000000D8A000-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

1788 powershell.exe
960 powershell.exe
3436 powershell.exe
3404 powershell.exe

Drops startup file 2 IoCs

Processes:

XClient2.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient2.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient2.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XClient2.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3007475212-2160282277-2943627620-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient2.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

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

System Information Discovery
T1082

flow	ioc
1	ip-api.com

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient2.exe

pid	process
1788	powershell.exe
1788	powershell.exe
960	powershell.exe
960	powershell.exe
3436	powershell.exe
3436	powershell.exe
3404	powershell.exe
3404	powershell.exe
3936	XClient2.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

XClient2.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	3936	XClient2.exe
Token: SeDebugPrivilege	1788	powershell.exe
Token: SeDebugPrivilege	960	powershell.exe
Token: SeDebugPrivilege	3436	powershell.exe
Token: SeDebugPrivilege	3404	powershell.exe
Token: SeDebugPrivilege	3936	XClient2.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient2.exe

pid process

3936 XClient2.exe

pid	process
3936	XClient2.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

XClient2.exe

description	pid	process	target process
PID 3936 wrote to memory of 1788	3936	XClient2.exe	powershell.exe
PID 3936 wrote to memory of 1788	3936	XClient2.exe	powershell.exe
PID 3936 wrote to memory of 960	3936	XClient2.exe	powershell.exe
PID 3936 wrote to memory of 960	3936	XClient2.exe	powershell.exe
PID 3936 wrote to memory of 3436	3936	XClient2.exe	powershell.exe
PID 3936 wrote to memory of 3436	3936	XClient2.exe	powershell.exe
PID 3936 wrote to memory of 3404	3936	XClient2.exe	powershell.exe
PID 3936 wrote to memory of 3404	3936	XClient2.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\XClient2.exe
"C:\Users\Admin\AppData\Local\Temp\XClient2.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:3936
- 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\XClient2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1788
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:960
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3436
- 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:3404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
944B

MD5
a116d56b723a0d248b5a38cbc3429288

SHA1
75efdbe43b0db5b4b4761166e1a6926316715f54

SHA256
f17648922a442aed77374620c12e8a0fb492290a191204ccdb1eca3dcf2d6258

SHA512
a19db0a5120a5857571ec2593d80e9d78405a9fb4bee0f358c8dca484d1f2760d79cdb9a7abfd48db1175d09be6b190e0d02837f59cc10f212215f16b14986c0

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

Filesize
944B

MD5
5b705b4839f481b2485f2195c589cad0

SHA1
a55866cd9e6fedf352d0e937101755ea61a50c86

SHA256
f6a3b94a63de605bbbcf1e95cb2d743166f44ea7e9d0d2bfa0e88c94c26e37c6

SHA512
f228eccd5646068a81e79baeaf7e8bfa470b30d503bf0ca8cc746c009510ab609b5c091cadf08fab1e3581900cdb7834c775c61a95a29c2d73ccd0dcbd851bab

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nmt4534r.0a2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1788-3-0x00007FF8E4EC0000-0x00007FF8E5982000-memory.dmp

Filesize
10.8MB

Download
memory/1788-13-0x00007FF8E4EC0000-0x00007FF8E5982000-memory.dmp

Filesize
10.8MB

Download
memory/1788-14-0x00007FF8E4EC0000-0x00007FF8E5982000-memory.dmp

Filesize
10.8MB

Download
memory/1788-16-0x00007FF8E4EC0000-0x00007FF8E5982000-memory.dmp

Filesize
10.8MB

Download
memory/1788-18-0x00007FF8E4EC0000-0x00007FF8E5982000-memory.dmp

Filesize
10.8MB

Download
memory/1788-12-0x000001B9BF3F0000-0x000001B9BF412000-memory.dmp

Filesize
136KB

Download
memory/3936-0-0x00007FF8E4EC3000-0x00007FF8E4EC5000-memory.dmp

Filesize
8KB

Download
memory/3936-2-0x00007FF8E4EC0000-0x00007FF8E5982000-memory.dmp

Filesize
10.8MB

Download
memory/3936-1-0x0000000000D70000-0x0000000000D8A000-memory.dmp

Filesize
104KB

Download
memory/3936-54-0x00007FF8E4EC0000-0x00007FF8E5982000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads