xworm | d42086188d177a3efbfa0d70daef5b9afc83313635c0bd792e865e537048f085

Analysis

max time kernel
299s
max time network
299s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
26/01/2025, 07:29

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General

Target

midnight cs2.exe
Size

186KB
MD5

a8215742a95e9c168ccfc61b3b7e3499
SHA1

28125198889769fc28930a6ae8177de58ff99e75
SHA256

d42086188d177a3efbfa0d70daef5b9afc83313635c0bd792e865e537048f085
SHA512

7313357cbf14d574b4a17c0139098e4e2a91457a086707b3cda5de0d7bd028a37e55a220eab8108fe8a5fb27529c36944c105b0732ec32d258ba84844e2734b0
SSDEEP

3072:KiP2xSwpN+UzbEI7NO3n3GU9UYPziDfu7o:Kz7+UzbR7O9UYPym7

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

its-definitely.gl.at.ply.gg:32735

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 6 IoCs

resource	yara_rule
behavioral1/memory/2232-1-0x0000000000250000-0x0000000000284000-memory.dmp	family_xworm
behavioral1/files/0x000d0000000122cf-36.dat	family_xworm
behavioral1/memory/288-38-0x0000000000E70000-0x0000000000EA4000-memory.dmp	family_xworm
behavioral1/memory/2944-42-0x0000000000FE0000-0x0000000001014000-memory.dmp	family_xworm
behavioral1/memory/1136-44-0x0000000000020000-0x0000000000054000-memory.dmp	family_xworm
behavioral1/memory/672-46-0x00000000002F0000-0x0000000000324000-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
2788	powershell.exe
2548	powershell.exe
3040	powershell.exe
1112	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	midnight cs2.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	midnight cs2.exe

Executes dropped EXE 5 IoCs

pid	Process
288	XClient.exe
1688	XClient.exe
2944	XClient.exe
1136	XClient.exe
672	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	midnight cs2.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.

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

pid	Process
772	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2788	powershell.exe
2548	powershell.exe
3040	powershell.exe
1112	powershell.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	2232	midnight cs2.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeDebugPrivilege	2548	powershell.exe
Token: SeDebugPrivilege	3040	powershell.exe
Token: SeDebugPrivilege	1112	powershell.exe
Token: SeDebugPrivilege	2232	midnight cs2.exe
Token: SeDebugPrivilege	288	XClient.exe
Token: SeDebugPrivilege	1688	XClient.exe
Token: SeDebugPrivilege	2944	XClient.exe
Token: SeDebugPrivilege	1136	XClient.exe
Token: SeDebugPrivilege	672	XClient.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2788	2232	midnight cs2.exe	32
PID 2232 wrote to memory of 2788	2232	midnight cs2.exe	32
PID 2232 wrote to memory of 2788	2232	midnight cs2.exe	32
PID 2232 wrote to memory of 2548	2232	midnight cs2.exe	34
PID 2232 wrote to memory of 2548	2232	midnight cs2.exe	34
PID 2232 wrote to memory of 2548	2232	midnight cs2.exe	34
PID 2232 wrote to memory of 3040	2232	midnight cs2.exe	36
PID 2232 wrote to memory of 3040	2232	midnight cs2.exe	36
PID 2232 wrote to memory of 3040	2232	midnight cs2.exe	36
PID 2232 wrote to memory of 1112	2232	midnight cs2.exe	38
PID 2232 wrote to memory of 1112	2232	midnight cs2.exe	38
PID 2232 wrote to memory of 1112	2232	midnight cs2.exe	38
PID 2232 wrote to memory of 772	2232	midnight cs2.exe	40
PID 2232 wrote to memory of 772	2232	midnight cs2.exe	40
PID 2232 wrote to memory of 772	2232	midnight cs2.exe	40
PID 1092 wrote to memory of 288	1092	taskeng.exe	43
PID 1092 wrote to memory of 288	1092	taskeng.exe	43
PID 1092 wrote to memory of 288	1092	taskeng.exe	43
PID 1092 wrote to memory of 1688	1092	taskeng.exe	44
PID 1092 wrote to memory of 1688	1092	taskeng.exe	44
PID 1092 wrote to memory of 1688	1092	taskeng.exe	44
PID 1092 wrote to memory of 2944	1092	taskeng.exe	45
PID 1092 wrote to memory of 2944	1092	taskeng.exe	45
PID 1092 wrote to memory of 2944	1092	taskeng.exe	45
PID 1092 wrote to memory of 1136	1092	taskeng.exe	46
PID 1092 wrote to memory of 1136	1092	taskeng.exe	46
PID 1092 wrote to memory of 1136	1092	taskeng.exe	46
PID 1092 wrote to memory of 672	1092	taskeng.exe	47
PID 1092 wrote to memory of 672	1092	taskeng.exe	47
PID 1092 wrote to memory of 672	1092	taskeng.exe	47

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\midnight cs2.exe
"C:\Users\Admin\AppData\Local\Temp\midnight cs2.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2232
- 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\midnight cs2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2788
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'midnight cs2.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2548
- 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:3040
- 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:1112
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:772

C:\Windows\system32\taskeng.exe
taskeng.exe {2F0C0E7C-595C-460F-8213-AE57D00E4245} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1092
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:288
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1688
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2944
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1136
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\ALJLI94Z5P3VQ9EDERUO.temp

Filesize
7KB

MD5
34302f48a47729fde42b33d949fa28db

SHA1
590b1b8192ce5b6332ed7004494ed2561c26b891

SHA256
fd600fb18e91a75b0a3ca88349315edb0d36540feed2e37d18562780e5b172d6

SHA512
e2b58893eaf4b6261eea69e81371a0d46c0db51429e495c103dc47d387b654f9fdf445f74c0a21fdbb1e8f682c8a8a7e025d85dd07fb73ab097a9b82d482abdb

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

Filesize
186KB

MD5
a8215742a95e9c168ccfc61b3b7e3499

SHA1
28125198889769fc28930a6ae8177de58ff99e75

SHA256
d42086188d177a3efbfa0d70daef5b9afc83313635c0bd792e865e537048f085

SHA512
7313357cbf14d574b4a17c0139098e4e2a91457a086707b3cda5de0d7bd028a37e55a220eab8108fe8a5fb27529c36944c105b0732ec32d258ba84844e2734b0

Download Submit
memory/288-38-0x0000000000E70000-0x0000000000EA4000-memory.dmp

Filesize
208KB

Download
memory/672-46-0x00000000002F0000-0x0000000000324000-memory.dmp

Filesize
208KB

Download
memory/1136-44-0x0000000000020000-0x0000000000054000-memory.dmp

Filesize
208KB

Download
memory/2232-34-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/2232-1-0x0000000000250000-0x0000000000284000-memory.dmp

Filesize
208KB

Download
memory/2232-2-0x000007FEF5D20000-0x000007FEF670C000-memory.dmp

Filesize
9.9MB

Download
memory/2232-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/2232-33-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/2548-16-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2548-15-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/2788-9-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/2788-8-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

Filesize
2.9MB

Download
memory/2788-7-0x0000000002C40000-0x0000000002CC0000-memory.dmp

Filesize
512KB

Download
memory/2944-42-0x0000000000FE0000-0x0000000001014000-memory.dmp

Filesize
208KB

Download