xworm | 474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b

General

Target

XClient.exe
Size

78KB
MD5

a25ac87d1fea176e553d1892811b8c8d
SHA1

9b624bebe8d344209f6c3d4fa160becb9a3e11dc
SHA256

474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b
SHA512

7a137d4ccc1766351f2ea1a20f4866491b36edaff4902c54d5edf1b69fe22fcae200a14a8d779fbb439f190bd070e91e2bdcbd7b7d2b508901167586a4b31db6
SSDEEP

1536:MeQgyB1wb3whRLC7CkbPOOsexl6FdyOGL8jRBYb:Bp61wbKkbPumOGL8jRBY

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

37.114.39.24:7000

Attributes

Install_directory
%AppData%
install_file
winxd9.exe
telegram
https://api.telegram.org/bot7574778549:AAEqgXDQvR3Aj3QmQtNrJtln4Nkd7sNBWVc/sendMessage?chat_id=6855762756

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral4/memory/236-1-0x0000000000780000-0x000000000079A000-memory.dmp	family_xworm

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

pid	Process
2552	powershell.exe
4592	powershell.exe
3460	powershell.exe
3504	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winxd9.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winxd9.lnk	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3449935180-2903586757-2462874082-1000\Software\Microsoft\Windows\CurrentVersion\Run\winxd9 = "C:\\Users\\Admin\\AppData\\Roaming\\winxd9.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

pid	Process
5116	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4592	powershell.exe
4592	powershell.exe
3460	powershell.exe
3460	powershell.exe
3504	powershell.exe
3504	powershell.exe
2552	powershell.exe
2552	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	236	XClient.exe
Token: SeDebugPrivilege	4592	powershell.exe
Token: SeDebugPrivilege	3460	powershell.exe
Token: SeDebugPrivilege	3504	powershell.exe
Token: SeDebugPrivilege	2552	powershell.exe
Token: SeDebugPrivilege	236	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 236 wrote to memory of 4592	236	XClient.exe	82
PID 236 wrote to memory of 4592	236	XClient.exe	82
PID 236 wrote to memory of 3460	236	XClient.exe	84
PID 236 wrote to memory of 3460	236	XClient.exe	84
PID 236 wrote to memory of 3504	236	XClient.exe	86
PID 236 wrote to memory of 3504	236	XClient.exe	86
PID 236 wrote to memory of 2552	236	XClient.exe	88
PID 236 wrote to memory of 2552	236	XClient.exe	88
PID 236 wrote to memory of 5116	236	XClient.exe	90
PID 236 wrote to memory of 5116	236	XClient.exe	90

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:236
- 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:4592
- 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:3460
- 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\winxd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3504
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'winxd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2552
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "winxd9" /tr "C:\Users\Admin\AppData\Roaming\winxd9.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5116

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\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
05b3cd21c1ec02f04caba773186ee8d0

SHA1
39e790bfe10abf55b74dfb3603df8fcf6b5e6edb

SHA256
911efc5cf9cbeb697543eb3242f5297e1be46dd6603a390140a9ff031ed9e1e8

SHA512
e751008b032394817beb46937fd93a73be97254c2be94dd42f22fb1306d2715c653ece16fa96eab1a3e73811936768cea6b37888437086fc6f3e3e793a2515eb

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\Temp\__PSScriptPolicyTest_x44va12c.rgi.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/236-1-0x0000000000780000-0x000000000079A000-memory.dmp

Filesize
104KB

Download
memory/236-55-0x00007FF9AD270000-0x00007FF9ADD32000-memory.dmp

Filesize
10.8MB

Download
memory/236-54-0x00007FF9AD270000-0x00007FF9ADD32000-memory.dmp

Filesize
10.8MB

Download
memory/236-0-0x00007FF9AD273000-0x00007FF9AD275000-memory.dmp

Filesize
8KB

Download
memory/4592-13-0x00007FF9AD270000-0x00007FF9ADD32000-memory.dmp

Filesize
10.8MB

Download
memory/4592-18-0x00007FF9AD270000-0x00007FF9ADD32000-memory.dmp

Filesize
10.8MB

Download
memory/4592-15-0x00007FF9AD270000-0x00007FF9ADD32000-memory.dmp

Filesize
10.8MB

Download
memory/4592-14-0x00007FF9AD270000-0x00007FF9ADD32000-memory.dmp

Filesize
10.8MB

Download
memory/4592-12-0x00007FF9AD270000-0x00007FF9ADD32000-memory.dmp

Filesize
10.8MB

Download
memory/4592-11-0x00007FF9AD270000-0x00007FF9ADD32000-memory.dmp

Filesize
10.8MB

Download
memory/4592-10-0x00000147F7350000-0x00000147F7372000-memory.dmp

Filesize
136KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads