xworm | 9269bb54f5e7e505de0dc0f406c447625e153b0d79e3d553d1b0f5c79ccbfd6b

General

Target

Zerion(real).exe
Size

68KB
MD5

c78e30aece1251fbca58c57edaf2a9ac
SHA1

d6110e63d2c77b41eb46c0d11fa03d15081bfea4
SHA256

9269bb54f5e7e505de0dc0f406c447625e153b0d79e3d553d1b0f5c79ccbfd6b
SHA512

26838ca19a3c95c730d20ef1a87a5b0fe1713a0bce3437f31f6c06d163c60f04616a7a006add3aff624a332bd038f28b0e969d441c3c8c3421e14996c65102ba
SSDEEP

1536:0QGpw/mylCVbRi+bH5KoEmLd6vPc5OyGayvESuUi:0Qh/mylCVg+bH5+u2COoykh

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:7000

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2100-1-0x0000000000AF0000-0x0000000000B08000-memory.dmp	family_xworm
behavioral1/files/0x0009000000018742-36.dat	family_xworm
behavioral1/memory/2936-38-0x00000000012A0000-0x00000000012B8000-memory.dmp	family_xworm
behavioral1/memory/1964-41-0x0000000000200000-0x0000000000218000-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
2676	powershell.exe
2716	powershell.exe
2584	powershell.exe
2784	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	Zerion(real).exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	Zerion(real).exe

Executes dropped EXE 2 IoCs

pid	Process
2936	XClient.exe
1964	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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	Zerion(real).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
2708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2716	powershell.exe
2584	powershell.exe
2784	powershell.exe
2676	powershell.exe
2100	Zerion(real).exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2100	Zerion(real).exe
Token: SeDebugPrivilege	2716	powershell.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	2100	Zerion(real).exe
Token: SeDebugPrivilege	2936	XClient.exe
Token: SeDebugPrivilege	1964	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2100	Zerion(real).exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2716	2100	Zerion(real).exe	31
PID 2100 wrote to memory of 2716	2100	Zerion(real).exe	31
PID 2100 wrote to memory of 2716	2100	Zerion(real).exe	31
PID 2100 wrote to memory of 2584	2100	Zerion(real).exe	33
PID 2100 wrote to memory of 2584	2100	Zerion(real).exe	33
PID 2100 wrote to memory of 2584	2100	Zerion(real).exe	33
PID 2100 wrote to memory of 2784	2100	Zerion(real).exe	35
PID 2100 wrote to memory of 2784	2100	Zerion(real).exe	35
PID 2100 wrote to memory of 2784	2100	Zerion(real).exe	35
PID 2100 wrote to memory of 2676	2100	Zerion(real).exe	37
PID 2100 wrote to memory of 2676	2100	Zerion(real).exe	37
PID 2100 wrote to memory of 2676	2100	Zerion(real).exe	37
PID 2100 wrote to memory of 2708	2100	Zerion(real).exe	39
PID 2100 wrote to memory of 2708	2100	Zerion(real).exe	39
PID 2100 wrote to memory of 2708	2100	Zerion(real).exe	39
PID 1848 wrote to memory of 2936	1848	taskeng.exe	42
PID 1848 wrote to memory of 2936	1848	taskeng.exe	42
PID 1848 wrote to memory of 2936	1848	taskeng.exe	42
PID 1848 wrote to memory of 1964	1848	taskeng.exe	43
PID 1848 wrote to memory of 1964	1848	taskeng.exe	43
PID 1848 wrote to memory of 1964	1848	taskeng.exe	43

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\Zerion(real).exe
"C:\Users\Admin\AppData\Local\Temp\Zerion(real).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:2100
- 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\Zerion(real).exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2716
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Zerion(real).exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2584
- 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:2784
- 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:2676
- 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:2708

C:\Windows\system32\taskeng.exe
taskeng.exe {A1475C58-D4B4-4FFD-A058-BAEC6C5AB124} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1848
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2936
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1964

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\MCXESC01TVJSKPC1B48P.temp

Filesize
7KB

MD5
125eea5f00f7d0141c1c5f40a740a580

SHA1
2505c5a59365bbf73cd9777a15efd3e2c28ab952

SHA256
035bec3558fb7e0895e9cc601c550c62bc79f4d3088b12e68ee0e167ca5daff1

SHA512
a28003ca8cc4b1d005980dad5b4a667a161f4608182b135834c4664bcc0f1d2a7bee1b51631008ce3ef46ddb72b22f33a0e797ac794236f7e6c07bf087909624

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

Filesize
68KB

MD5
c78e30aece1251fbca58c57edaf2a9ac

SHA1
d6110e63d2c77b41eb46c0d11fa03d15081bfea4

SHA256
9269bb54f5e7e505de0dc0f406c447625e153b0d79e3d553d1b0f5c79ccbfd6b

SHA512
26838ca19a3c95c730d20ef1a87a5b0fe1713a0bce3437f31f6c06d163c60f04616a7a006add3aff624a332bd038f28b0e969d441c3c8c3421e14996c65102ba

Download Submit
memory/1964-41-0x0000000000200000-0x0000000000218000-memory.dmp

Filesize
96KB

Download
memory/2100-32-0x000000001B240000-0x000000001B2C0000-memory.dmp

Filesize
512KB

Download
memory/2100-1-0x0000000000AF0000-0x0000000000B08000-memory.dmp

Filesize
96KB

Download
memory/2100-34-0x000000001B240000-0x000000001B2C0000-memory.dmp

Filesize
512KB

Download
memory/2100-0-0x000007FEF5FE3000-0x000007FEF5FE4000-memory.dmp

Filesize
4KB

Download
memory/2100-33-0x000007FEF5FE3000-0x000007FEF5FE4000-memory.dmp

Filesize
4KB

Download
memory/2584-14-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2584-15-0x0000000001EC0000-0x0000000001EC8000-memory.dmp

Filesize
32KB

Download
memory/2716-8-0x00000000022D0000-0x00000000022D8000-memory.dmp

Filesize
32KB

Download
memory/2716-7-0x000000001B6B0000-0x000000001B992000-memory.dmp

Filesize
2.9MB

Download
memory/2716-6-0x0000000002C60000-0x0000000002CE0000-memory.dmp

Filesize
512KB

Download
memory/2936-38-0x00000000012A0000-0x00000000012B8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads