xworm | 39d928ef59af8f60ad6ff7dc973cc3d00e3f6751d5fd3824c615c311b0a14da0

General

Target

svchost.exe
Size

83KB
MD5

cf73759724ceaffa0353900bd428a555
SHA1

a62a68b7a2c0db839f05a763a9c5bda7b92f4709
SHA256

39d928ef59af8f60ad6ff7dc973cc3d00e3f6751d5fd3824c615c311b0a14da0
SHA512

d6340601e1a3ebda121390d55a3f2fbb6a1fd38e8fb51115823377f72087ef17409eafe41c182736c20b70ce25fabc1f83750112804b981c34d791c69e403e11
SSDEEP

1536:1n0eV0hQr7Xfc5z6AKlNwDSYyWzgbDHFoX2Nb9yB7j6M+pHaOJpyW:9CMfc8WyYgbDloGNba7LeaOJpD

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/mDSLGN9q
telegram
https://api.telegram.org/bot7168105056:AAGVK3B7ZFupxq4PpmnBpxAQOwJ5CUp76ow/sendMessage?chat_id=1992635040

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2076-1-0x0000000000DD0000-0x0000000000DEC000-memory.dmp	family_xworm
behavioral1/files/0x0009000000012118-35.dat	family_xworm
behavioral1/memory/1852-37-0x0000000000F50000-0x0000000000F6C000-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
1552	powershell.exe
2784	powershell.exe
2696	powershell.exe
2360	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1852	svchost.exe
2412	svchost.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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
6	pastebin.com
7	pastebin.com

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
2880	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2076	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2784	powershell.exe
2696	powershell.exe
2360	powershell.exe
1552	powershell.exe
2076	svchost.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2076	svchost.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	2696	powershell.exe
Token: SeDebugPrivilege	2360	powershell.exe
Token: SeDebugPrivilege	1552	powershell.exe
Token: SeDebugPrivilege	2076	svchost.exe
Token: SeDebugPrivilege	1852	svchost.exe
Token: SeDebugPrivilege	2412	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2076	svchost.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2784	2076	svchost.exe	29
PID 2076 wrote to memory of 2784	2076	svchost.exe	29
PID 2076 wrote to memory of 2784	2076	svchost.exe	29
PID 2076 wrote to memory of 2696	2076	svchost.exe	31
PID 2076 wrote to memory of 2696	2076	svchost.exe	31
PID 2076 wrote to memory of 2696	2076	svchost.exe	31
PID 2076 wrote to memory of 2360	2076	svchost.exe	33
PID 2076 wrote to memory of 2360	2076	svchost.exe	33
PID 2076 wrote to memory of 2360	2076	svchost.exe	33
PID 2076 wrote to memory of 1552	2076	svchost.exe	35
PID 2076 wrote to memory of 1552	2076	svchost.exe	35
PID 2076 wrote to memory of 1552	2076	svchost.exe	35
PID 2076 wrote to memory of 2880	2076	svchost.exe	37
PID 2076 wrote to memory of 2880	2076	svchost.exe	37
PID 2076 wrote to memory of 2880	2076	svchost.exe	37
PID 900 wrote to memory of 1852	900	taskeng.exe	42
PID 900 wrote to memory of 1852	900	taskeng.exe	42
PID 900 wrote to memory of 1852	900	taskeng.exe	42
PID 900 wrote to memory of 2412	900	taskeng.exe	43
PID 900 wrote to memory of 2412	900	taskeng.exe	43
PID 900 wrote to memory of 2412	900	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\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2076
- 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\svchost.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 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2696
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2360
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1552
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2880

C:\Windows\system32\taskeng.exe
taskeng.exe {3F28041B-5A9C-4155-A59C-E5FFAF0D7605} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:900
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1852
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2412

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
453759876d2df563960a3fd0d3366999

SHA1
6ce21142c7e928ca0b6a55a78d9774fd8b1d695a

SHA256
413e9f726657abe5ae8de911cb2d10fa946f1582f43d94941fe4341e9620e67e

SHA512
c6491fb7b58252299e1379a54de548b010a4c785a833e8ae7f2a22e9974687f0d0049b41b211427d8ccb475c3217af734e7ae6e4e34f5c77ec31e3076b3a6dae

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

Filesize
83KB

MD5
cf73759724ceaffa0353900bd428a555

SHA1
a62a68b7a2c0db839f05a763a9c5bda7b92f4709

SHA256
39d928ef59af8f60ad6ff7dc973cc3d00e3f6751d5fd3824c615c311b0a14da0

SHA512
d6340601e1a3ebda121390d55a3f2fbb6a1fd38e8fb51115823377f72087ef17409eafe41c182736c20b70ce25fabc1f83750112804b981c34d791c69e403e11

Download Submit
memory/1852-37-0x0000000000F50000-0x0000000000F6C000-memory.dmp

Filesize
112KB

Download
memory/2076-0-0x000007FEF56A3000-0x000007FEF56A4000-memory.dmp

Filesize
4KB

Download
memory/2076-1-0x0000000000DD0000-0x0000000000DEC000-memory.dmp

Filesize
112KB

Download
memory/2076-2-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2076-33-0x000007FEF56A0000-0x000007FEF608C000-memory.dmp

Filesize
9.9MB

Download
memory/2076-17-0x000007FEF56A3000-0x000007FEF56A4000-memory.dmp

Filesize
4KB

Download
memory/2696-16-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2696-15-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2784-9-0x00000000026F0000-0x00000000026F8000-memory.dmp

Filesize
32KB

Download
memory/2784-8-0x000000001B520000-0x000000001B802000-memory.dmp

Filesize
2.9MB

Download
memory/2784-7-0x00000000029C0000-0x0000000002A40000-memory.dmp

Filesize
512KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads