xworm | 2e92b87e711d2e0c6a6338405c88ee79409082f710f4de516e17c204a5d4e2ad

General

Target

NetworkVPN.exe
Size

73KB
MD5

13096ebd1c9bd3477a6980126c30335b
SHA1

dd1db44656edb5da37c71d3c6c2760cc93a54920
SHA256

2e92b87e711d2e0c6a6338405c88ee79409082f710f4de516e17c204a5d4e2ad
SHA512

a24cbc13c75f6472e9850b8669ab8d4fcef404111e36d85b7baa057b8ace9ab3c60a82c14346082278fe8e0fd7f2b2734202f5eb907e3542a2ddcdb4314d5366
SSDEEP

1536:K82GiTnkhZY3KAJbdlRUXuaEqVy7wIM6aBwOFaqR6WVM:K82D6AJb3RUfXmmBwOAqhM

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

time-austin.gl.at.ply.gg:48325

Attributes

Install_directory
%AppData%
install_file
Microsoft Network Realtime Inspection Service.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4948-1-0x0000000000C70000-0x0000000000C88000-memory.dmp	family_xworm
behavioral2/files/0x000e0000000233fa-61.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
5960	powershell.exe
5772	powershell.exe
5128	powershell.exe
1256	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	NetworkVPN.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3860	Microsoft Network Realtime Inspection Service.exe
8	Microsoft Network Realtime Inspection Service.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-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft Network Realtime Inspection Service = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft Network Realtime Inspection Service.exe"	NetworkVPN.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
9	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
3268	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
5960	powershell.exe
5960	powershell.exe
5772	powershell.exe
5772	powershell.exe
5128	powershell.exe
5128	powershell.exe
1256	powershell.exe
1256	powershell.exe
4948	NetworkVPN.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	NetworkVPN.exe
Token: SeDebugPrivilege	5960	powershell.exe
Token: SeDebugPrivilege	5772	powershell.exe
Token: SeDebugPrivilege	5128	powershell.exe
Token: SeDebugPrivilege	1256	powershell.exe
Token: SeDebugPrivilege	4948	NetworkVPN.exe
Token: SeDebugPrivilege	3860	Microsoft Network Realtime Inspection Service.exe
Token: SeDebugPrivilege	8	Microsoft Network Realtime Inspection Service.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4948	NetworkVPN.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 5960	4948	NetworkVPN.exe	81
PID 4948 wrote to memory of 5960	4948	NetworkVPN.exe	81
PID 4948 wrote to memory of 5772	4948	NetworkVPN.exe	83
PID 4948 wrote to memory of 5772	4948	NetworkVPN.exe	83
PID 4948 wrote to memory of 5128	4948	NetworkVPN.exe	85
PID 4948 wrote to memory of 5128	4948	NetworkVPN.exe	85
PID 4948 wrote to memory of 1256	4948	NetworkVPN.exe	87
PID 4948 wrote to memory of 1256	4948	NetworkVPN.exe	87
PID 4948 wrote to memory of 3268	4948	NetworkVPN.exe	91
PID 4948 wrote to memory of 3268	4948	NetworkVPN.exe	91

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\NetworkVPN.exe
"C:\Users\Admin\AppData\Local\Temp\NetworkVPN.exe"
1⤵
- Checks computer location settings
- 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:4948
- 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\NetworkVPN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5960
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NetworkVPN.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5772
- 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\Microsoft Network Realtime Inspection Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5128
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Microsoft Network Realtime Inspection Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1256
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Microsoft Network Realtime Inspection Service" /tr "C:\Users\Admin\AppData\Roaming\Microsoft Network Realtime Inspection Service.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3268

C:\Users\Admin\AppData\Roaming\Microsoft Network Realtime Inspection Service.exe
"C:\Users\Admin\AppData\Roaming\Microsoft Network Realtime Inspection Service.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3860

C:\Users\Admin\AppData\Roaming\Microsoft Network Realtime Inspection Service.exe
"C:\Users\Admin\AppData\Roaming\Microsoft Network Realtime Inspection Service.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:8

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Microsoft Network Realtime Inspection Service.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
d7f4d4ca73f05b25181b68f11fef28df

SHA1
6ebb59914957f8e2ed0a4030141e38063430aeaa

SHA256
21420832ae8919c7a6b6ca850947f0d7c6d7330934c91e05b5a865e0bb43d099

SHA512
e6993f40cc78aaafcddce74e33c345fd2fb8801908a3e3ef87ec5ab9ad80f520c7aa80df9ee7eec376d4361e92b608a619d8383820b4c6211e61dbf0fb72fb0c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_shwmmyl1.3yx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft Network Realtime Inspection Service.exe

Filesize
73KB

MD5
13096ebd1c9bd3477a6980126c30335b

SHA1
dd1db44656edb5da37c71d3c6c2760cc93a54920

SHA256
2e92b87e711d2e0c6a6338405c88ee79409082f710f4de516e17c204a5d4e2ad

SHA512
a24cbc13c75f6472e9850b8669ab8d4fcef404111e36d85b7baa057b8ace9ab3c60a82c14346082278fe8e0fd7f2b2734202f5eb907e3542a2ddcdb4314d5366

Download Submit
memory/1256-54-0x000001FB4EC60000-0x000001FB4EE7C000-memory.dmp

Filesize
2.1MB

Download
memory/4948-59-0x00007FFA71F23000-0x00007FFA71F25000-memory.dmp

Filesize
8KB

Download
memory/4948-0-0x00007FFA71F23000-0x00007FFA71F25000-memory.dmp

Filesize
8KB

Download
memory/4948-60-0x00007FFA71F20000-0x00007FFA729E1000-memory.dmp

Filesize
10.8MB

Download
memory/4948-2-0x00007FFA71F20000-0x00007FFA729E1000-memory.dmp

Filesize
10.8MB

Download
memory/4948-64-0x000000001DAA0000-0x000000001DAAC000-memory.dmp

Filesize
48KB

Download
memory/4948-1-0x0000000000C70000-0x0000000000C88000-memory.dmp

Filesize
96KB

Download
memory/5128-42-0x000002A1AB0C0000-0x000002A1AB2DC000-memory.dmp

Filesize
2.1MB

Download
memory/5960-18-0x00007FFA71F20000-0x00007FFA729E1000-memory.dmp

Filesize
10.8MB

Download
memory/5960-15-0x000001FB46CB0000-0x000001FB46CD2000-memory.dmp

Filesize
136KB

Download
memory/5960-5-0x00007FFA71F20000-0x00007FFA729E1000-memory.dmp

Filesize
10.8MB

Download
memory/5960-4-0x00007FFA71F20000-0x00007FFA729E1000-memory.dmp

Filesize
10.8MB

Download
memory/5960-3-0x00007FFA71F20000-0x00007FFA729E1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads