xworm | c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454

General

Target

WizClient.exe
Size

77KB
MD5

a307d64f791cb555d029c214364162d8
SHA1

04f134fd1a0b71e0b4b745a97e9a08ed1ee45c74
SHA256

c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454
SHA512

d432bcf7874ea3f74ec7e4fc51b400f7c3492b06479fd12949b7cde698e513bbabd08afae8d0ffc2efbe3d7d0cb44e08c5b2bba3f116b9fd6120713e2cd5f96e
SSDEEP

1536:x5sFO8g/9VM5dQ+aomobhr3KXg6wzOB1SmOnU7Ua+G:x5sU9Vv4bbhr6SOB1S5nU7MG

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

left-noon.gl.at.ply.gg:60705

Attributes

Install_directory
%AppData%
install_file
US11B.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1848-1-0x00000000009D0000-0x00000000009EA000-memory.dmp	family_xworm
behavioral1/files/0x000a000000004e74-30.dat	family_xworm
behavioral1/memory/792-36-0x00000000010B0000-0x00000000010CA000-memory.dmp	family_xworm
behavioral1/memory/1692-39-0x00000000010F0000-0x000000000110A000-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 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2736	powershell.exe
2892	powershell.exe
2760	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
792	WizClient.exe
1692	WizClient.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\WizClient = "C:\\Users\\Admin\\AppData\\Roaming\\WizClient.exe"	WizClient.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

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	WizClient.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	WizClient.exe

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
2868	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2736	powershell.exe
2892	powershell.exe
2760	powershell.exe
1848	WizClient.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	1848	WizClient.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	2892	powershell.exe
Token: SeDebugPrivilege	2760	powershell.exe
Token: SeDebugPrivilege	1848	WizClient.exe
Token: SeDebugPrivilege	792	WizClient.exe
Token: SeDebugPrivilege	1692	WizClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1848	WizClient.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 2736	1848	WizClient.exe	31
PID 1848 wrote to memory of 2736	1848	WizClient.exe	31
PID 1848 wrote to memory of 2736	1848	WizClient.exe	31
PID 1848 wrote to memory of 2892	1848	WizClient.exe	33
PID 1848 wrote to memory of 2892	1848	WizClient.exe	33
PID 1848 wrote to memory of 2892	1848	WizClient.exe	33
PID 1848 wrote to memory of 2760	1848	WizClient.exe	35
PID 1848 wrote to memory of 2760	1848	WizClient.exe	35
PID 1848 wrote to memory of 2760	1848	WizClient.exe	35
PID 1848 wrote to memory of 2868	1848	WizClient.exe	37
PID 1848 wrote to memory of 2868	1848	WizClient.exe	37
PID 1848 wrote to memory of 2868	1848	WizClient.exe	37
PID 2112 wrote to memory of 792	2112	taskeng.exe	41
PID 2112 wrote to memory of 792	2112	taskeng.exe	41
PID 2112 wrote to memory of 792	2112	taskeng.exe	41
PID 2112 wrote to memory of 1692	2112	taskeng.exe	42
PID 2112 wrote to memory of 1692	2112	taskeng.exe	42
PID 2112 wrote to memory of 1692	2112	taskeng.exe	42

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\WizClient.exe
"C:\Users\Admin\AppData\Local\Temp\WizClient.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1848
- 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\WizClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2736
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WizClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2892
- 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\WizClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2760
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WizClient" /tr "C:\Users\Admin\AppData\Roaming\WizClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2868

C:\Windows\system32\taskeng.exe
taskeng.exe {C3E39565-AD68-4C49-BC96-0E89C8A787B0} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\AppData\Roaming\WizClient.exe
  C:\Users\Admin\AppData\Roaming\WizClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:792
- C:\Users\Admin\AppData\Roaming\WizClient.exe
  C:\Users\Admin\AppData\Roaming\WizClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1692

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

2

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

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
ab5630437a567312984524f433108ec3

SHA1
9f6d1592d4c5bf3c68d47a776ae80f9883de32bd

SHA256
624c274b08005291a03ca6bbec28a082c11225fa68a713b9da3435dc134b34f6

SHA512
ad50ff56c67fb32a0fee3545bae3c03c2b3786e57f4f86601aab5305d38df24cac3d80332e9e0050be1da3576b9781a7aa2f5edd686c59ed11653488d0732fc3

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

Filesize
77KB

MD5
a307d64f791cb555d029c214364162d8

SHA1
04f134fd1a0b71e0b4b745a97e9a08ed1ee45c74

SHA256
c346655d32844eda0a9ec3d3d9b16c1c27248bda424fc8b91804d26cd8986454

SHA512
d432bcf7874ea3f74ec7e4fc51b400f7c3492b06479fd12949b7cde698e513bbabd08afae8d0ffc2efbe3d7d0cb44e08c5b2bba3f116b9fd6120713e2cd5f96e

Download Submit
memory/792-36-0x00000000010B0000-0x00000000010CA000-memory.dmp

Filesize
104KB

Download
memory/1692-39-0x00000000010F0000-0x000000000110A000-memory.dmp

Filesize
104KB

Download
memory/1848-2-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download
memory/1848-0-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/1848-25-0x000007FEF5213000-0x000007FEF5214000-memory.dmp

Filesize
4KB

Download
memory/1848-1-0x00000000009D0000-0x00000000009EA000-memory.dmp

Filesize
104KB

Download
memory/1848-32-0x000007FEF5210000-0x000007FEF5BFC000-memory.dmp

Filesize
9.9MB

Download
memory/2736-7-0x0000000002C10000-0x0000000002C90000-memory.dmp

Filesize
512KB

Download
memory/2736-8-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/2736-9-0x00000000022C0000-0x00000000022C8000-memory.dmp

Filesize
32KB

Download
memory/2892-15-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2892-16-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads