xworm | 10db45b88db5377749bce89b2fe511917e38d027e539ac652ea79829fb82985d

General

Target

cmd.exe
Size

66KB
MD5

0680a239ba405c1935c687ebdf6d4540
SHA1

bf2cc8de357fe1af9888e120e1c139ca2bc77c15
SHA256

10db45b88db5377749bce89b2fe511917e38d027e539ac652ea79829fb82985d
SHA512

09ff2d0449404f7b704cb8270ceecfc87d84c42c202a55ce20fb425230d81f5bf8a798c1c52a2a1ed19c599ad8d2f72188c561d734dd79ac70b7973fbd07fc73
SSDEEP

1536:44Sw2KfDxiZcy2fdbdFSQ37E6vObaKjG:4OL1yGdbdF5ZObPG

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

medical-m.gl.at.ply.gg:28857

Attributes

Install_directory
%ProgramData%
install_file
Runtime Broker.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1740-1-0x0000000000320000-0x0000000000336000-memory.dmp	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
2776	powershell.exe
2932	powershell.exe
1392	powershell.exe
1152	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk	cmd.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-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\Runtime Broker = "C:\\ProgramData\\Runtime Broker.exe"	cmd.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
2216	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1152	powershell.exe
2776	powershell.exe
2932	powershell.exe
1392	powershell.exe
1740	cmd.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1740	cmd.exe
Token: SeDebugPrivilege	1152	powershell.exe
Token: SeDebugPrivilege	2776	powershell.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	1392	powershell.exe
Token: SeDebugPrivilege	1740	cmd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1740	cmd.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1740 wrote to memory of 1152	1740	cmd.exe	29
PID 1740 wrote to memory of 1152	1740	cmd.exe	29
PID 1740 wrote to memory of 1152	1740	cmd.exe	29
PID 1740 wrote to memory of 2776	1740	cmd.exe	31
PID 1740 wrote to memory of 2776	1740	cmd.exe	31
PID 1740 wrote to memory of 2776	1740	cmd.exe	31
PID 1740 wrote to memory of 2932	1740	cmd.exe	33
PID 1740 wrote to memory of 2932	1740	cmd.exe	33
PID 1740 wrote to memory of 2932	1740	cmd.exe	33
PID 1740 wrote to memory of 1392	1740	cmd.exe	35
PID 1740 wrote to memory of 1392	1740	cmd.exe	35
PID 1740 wrote to memory of 1392	1740	cmd.exe	35
PID 1740 wrote to memory of 2216	1740	cmd.exe	37
PID 1740 wrote to memory of 2216	1740	cmd.exe	37
PID 1740 wrote to memory of 2216	1740	cmd.exe	37

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\cmd.exe
"C:\Users\Admin\AppData\Local\Temp\cmd.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:1740
- 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\cmd.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'cmd.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2776
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Runtime Broker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2932
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Runtime Broker.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1392
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Runtime Broker" /tr "C:\ProgramData\Runtime Broker.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2216

C:\Windows\system32\taskeng.exe
taskeng.exe {448426B7-2A47-4CB1-840F-426D363B933D} S-1-5-21-268080393-3149932598-1824759070-1000:UHRQKJCP\Admin:Interactive:[1]
1⤵
PID:1332

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
8bc2549b65c3d775e865ca1c274274bb

SHA1
42033d125bedebc32f933e53fdfc74adcf65cb63

SHA256
12b5c0f4037f64380b04dfc8928a7ff8191219177b869503e34e0047b8fceab4

SHA512
7db24eb89bcb2f05005719be6a87923918292c97ee84946abc441a1e043cf3a094b32f5eefbbda1d2a398521398760cc38590cb95b278787f64877cc56f47b2c

Download Submit
memory/1152-8-0x0000000002A10000-0x0000000002A90000-memory.dmp

Filesize
512KB

Download
memory/1152-9-0x000000001B6F0000-0x000000001B9D2000-memory.dmp

Filesize
2.9MB

Download
memory/1152-10-0x0000000002320000-0x0000000002328000-memory.dmp

Filesize
32KB

Download
memory/1740-0-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

Filesize
4KB

Download
memory/1740-1-0x0000000000320000-0x0000000000336000-memory.dmp

Filesize
88KB

Download
memory/1740-2-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/1740-3-0x000007FEF5E93000-0x000007FEF5E94000-memory.dmp

Filesize
4KB

Download
memory/1740-33-0x000007FEF5E90000-0x000007FEF687C000-memory.dmp

Filesize
9.9MB

Download
memory/2776-16-0x000000001B7B0000-0x000000001BA92000-memory.dmp

Filesize
2.9MB

Download
memory/2776-17-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads