xworm | 8c8a2fea63dc99d033af66a6cbc0034ed3eafbf20912e58f8d571555584154da

General

Target

XClientnigaz.exe
Size

79KB
MD5

8fb3eace3e1ba795ccc5a82b911503cb
SHA1

8566285c99b8fda42b3d68495dac3377d6231401
SHA256

8c8a2fea63dc99d033af66a6cbc0034ed3eafbf20912e58f8d571555584154da
SHA512

240a7ed95bfebb9472dfee2d2eab49db245d5fde37d4b9585316ef3cc0762008a17a7863506ee94a1ecb469e42ee01ec84080070edf50ab5ae6702923cac3938
SSDEEP

1536:Oui+59ku1fCyjvid5oXsK+bTlexkHV/6+bOIgY4OOsGN:Yju1fhjvi/Q+bTl/bOFYON

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

195.88.218.113:30101

Attributes

Install_directory
%AppData%
install_file
Console Window Host.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1600-1-0x0000000001280000-0x000000000129A000-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
2936	powershell.exe
2668	powershell.exe
888	powershell.exe
2884	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Console Window Host.lnk	XClientnigaz.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Console Window Host.lnk	XClientnigaz.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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\Console Window Host = "C:\\Users\\Admin\\AppData\\Roaming\\Console Window Host.exe"	XClientnigaz.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
2244	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2884	powershell.exe
2936	powershell.exe
2668	powershell.exe
888	powershell.exe
1600	XClientnigaz.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1600	XClientnigaz.exe
Token: SeDebugPrivilege	2884	powershell.exe
Token: SeDebugPrivilege	2936	powershell.exe
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	888	powershell.exe
Token: SeDebugPrivilege	1600	XClientnigaz.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1600	XClientnigaz.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 2884	1600	XClientnigaz.exe	30
PID 1600 wrote to memory of 2884	1600	XClientnigaz.exe	30
PID 1600 wrote to memory of 2884	1600	XClientnigaz.exe	30
PID 1600 wrote to memory of 2936	1600	XClientnigaz.exe	32
PID 1600 wrote to memory of 2936	1600	XClientnigaz.exe	32
PID 1600 wrote to memory of 2936	1600	XClientnigaz.exe	32
PID 1600 wrote to memory of 2668	1600	XClientnigaz.exe	34
PID 1600 wrote to memory of 2668	1600	XClientnigaz.exe	34
PID 1600 wrote to memory of 2668	1600	XClientnigaz.exe	34
PID 1600 wrote to memory of 888	1600	XClientnigaz.exe	36
PID 1600 wrote to memory of 888	1600	XClientnigaz.exe	36
PID 1600 wrote to memory of 888	1600	XClientnigaz.exe	36
PID 1600 wrote to memory of 2244	1600	XClientnigaz.exe	38
PID 1600 wrote to memory of 2244	1600	XClientnigaz.exe	38
PID 1600 wrote to memory of 2244	1600	XClientnigaz.exe	38

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\XClientnigaz.exe
"C:\Users\Admin\AppData\Local\Temp\XClientnigaz.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:1600
- 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\XClientnigaz.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2884
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClientnigaz.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- 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\Console Window Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2668
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Console Window Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:888
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Console Window Host" /tr "C:\Users\Admin\AppData\Roaming\Console Window Host.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2244

C:\Windows\system32\taskeng.exe
taskeng.exe {29C0E364-19BB-4ED9-AE9F-B58496AAF205} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]
1⤵
PID:1448

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
00b6533b89e95aba952c24870699bf10

SHA1
edd50992c870e6bbe158aa445df01e901876cef4

SHA256
86841f6a3d55756a9ed2a7d8aaa1116d86c54ae29a61eadf1758072daaf64eee

SHA512
2c42d83574a8e9f31825d66a556adf0415ceac5202ca6bb011c3bf670899bc5f68bf0f65cf235f24c76639d1839b787038f1d044bf20f5dd39ec43969d268c85

Download Submit
memory/1600-0-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/1600-1-0x0000000001280000-0x000000000129A000-memory.dmp

Filesize
104KB

Download
memory/1600-30-0x000000001B040000-0x000000001B0C0000-memory.dmp

Filesize
512KB

Download
memory/1600-31-0x000007FEF5D23000-0x000007FEF5D24000-memory.dmp

Filesize
4KB

Download
memory/1600-32-0x000000001B040000-0x000000001B0C0000-memory.dmp

Filesize
512KB

Download
memory/2884-6-0x00000000029F0000-0x0000000002A70000-memory.dmp

Filesize
512KB

Download
memory/2884-7-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2884-8-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2936-14-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/2936-15-0x0000000001F80000-0x0000000001F88000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads