xworm | 4584e840367c8990cb040f840d4e6af35424e3ab7618985bfc76190757eae2a2

General

Target

XWorm.exe
Size

9.1MB
MD5

76b8dd1cc4d42ceb68720da77fa05dab
SHA1

4594f0a2b104257123b72587226e0694ed410803
SHA256

7eacc3500da7eeebe2936d120ac8dbc56de6f1100b0ae77b13da5ee0850af4fb
SHA512

5d72ea084d0b611566eb7fc35e6994c5bfd475813739ca9f5909206c081179d94faf59f707c52f9cf60de44cd1a86a6796c5ed1fd51f20db2c31abec3b9d964e
SSDEEP

3072:5BZK4Q137x/2bSinOvaYA2ewhLapuvpAsZOyMqmyBeYVYm:zZlQ137xebFVc/GWGwqqm1

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

uk1.localto.net:3725

Attributes

Install_directory
%ProgramData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral4/memory/5040-1-0x0000000000C20000-0x0000000000C58000-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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2432 powershell.exe
3956 powershell.exe
3476 powershell.exe
1036 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

Processes:

XWorm.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation XWorm.exe

pid	process
2432	powershell.exe
3956	powershell.exe
3476	powershell.exe
1036	powershell.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	XWorm.exe

Drops startup file 2 IoCs

Processes:

XWorm.exe

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

Executes dropped EXE 3 IoCs

Processes:

svchost.exesvchost.exesvchost.exe

pid process

696 svchost.exe
5024 svchost.exe
3560 svchost.exe

pid	process
696	svchost.exe
5024	svchost.exe
3560	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XWorm.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost.exe"	XWorm.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.

Processes:

flow ioc

14 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

Processes:

schtasks.exe

pid process

5104 schtasks.exe

flow	ioc
14	ip-api.com

pid	process
5104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXWorm.exe

pid	process
1036	powershell.exe
1036	powershell.exe
2432	powershell.exe
2432	powershell.exe
3956	powershell.exe
3956	powershell.exe
3476	powershell.exe
3476	powershell.exe
5040	XWorm.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

XWorm.exepowershell.exepowershell.exepowershell.exepowershell.exesvchost.exesvchost.exesvchost.exe

description	pid	process
Token: SeDebugPrivilege	5040	XWorm.exe
Token: SeDebugPrivilege	1036	powershell.exe
Token: SeDebugPrivilege	2432	powershell.exe
Token: SeDebugPrivilege	3956	powershell.exe
Token: SeDebugPrivilege	3476	powershell.exe
Token: SeDebugPrivilege	5040	XWorm.exe
Token: SeDebugPrivilege	696	svchost.exe
Token: SeDebugPrivilege	5024	svchost.exe
Token: SeDebugPrivilege	3560	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XWorm.exe

pid process

5040 XWorm.exe

pid	process
5040	XWorm.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

XWorm.exe

description	pid	process	target process
PID 5040 wrote to memory of 1036	5040	XWorm.exe	powershell.exe
PID 5040 wrote to memory of 1036	5040	XWorm.exe	powershell.exe
PID 5040 wrote to memory of 2432	5040	XWorm.exe	powershell.exe
PID 5040 wrote to memory of 2432	5040	XWorm.exe	powershell.exe
PID 5040 wrote to memory of 3956	5040	XWorm.exe	powershell.exe
PID 5040 wrote to memory of 3956	5040	XWorm.exe	powershell.exe
PID 5040 wrote to memory of 3476	5040	XWorm.exe	powershell.exe
PID 5040 wrote to memory of 3476	5040	XWorm.exe	powershell.exe
PID 5040 wrote to memory of 5104	5040	XWorm.exe	schtasks.exe
PID 5040 wrote to memory of 5104	5040	XWorm.exe	schtasks.exe

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\XWorm.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm.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:5040
- 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\XWorm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1036
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XWorm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2432
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3956
- 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:3476
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5104

C:\ProgramData\svchost.exe
C:\ProgramData\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:696

C:\ProgramData\svchost.exe
C:\ProgramData\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5024

C:\ProgramData\svchost.exe
C:\ProgramData\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3560

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:\ProgramData\svchost.exe

Filesize
9.1MB

MD5
76b8dd1cc4d42ceb68720da77fa05dab

SHA1
4594f0a2b104257123b72587226e0694ed410803

SHA256
7eacc3500da7eeebe2936d120ac8dbc56de6f1100b0ae77b13da5ee0850af4fb

SHA512
5d72ea084d0b611566eb7fc35e6994c5bfd475813739ca9f5909206c081179d94faf59f707c52f9cf60de44cd1a86a6796c5ed1fd51f20db2c31abec3b9d964e

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\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
0aa63dbb46d451e47a7a682c64af776d

SHA1
3b0026f2dae8e9c491ccaa40133755779de35aaa

SHA256
9158038718d41172c22a3c1a15852405e3e1c8e2c44fa066328eb1520e5d977b

SHA512
4d2564850c2ab1bc71089412f19147df4a1cd3075aa2039aa894271b333cd9c510b7ba4d70889f24d45d8b366d8b5167abdcf24314e4753420337c7d34e7c43f

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

Filesize
944B

MD5
9bc110200117a3752313ca2acaf8a9e1

SHA1
fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

SHA256
c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

SHA512
1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wyqpbkld.k2p.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1036-10-0x000001ECFB540000-0x000001ECFB562000-memory.dmp

Filesize
136KB

Download
memory/1036-18-0x00007FF9E60B0000-0x00007FF9E6B71000-memory.dmp

Filesize
10.8MB

Download
memory/1036-15-0x00007FF9E60B0000-0x00007FF9E6B71000-memory.dmp

Filesize
10.8MB

Download
memory/1036-14-0x00007FF9E60B0000-0x00007FF9E6B71000-memory.dmp

Filesize
10.8MB

Download
memory/1036-3-0x00007FF9E60B0000-0x00007FF9E6B71000-memory.dmp

Filesize
10.8MB

Download
memory/5040-19-0x00007FF9E60B3000-0x00007FF9E60B5000-memory.dmp

Filesize
8KB

Download
memory/5040-0-0x00007FF9E60B3000-0x00007FF9E60B5000-memory.dmp

Filesize
8KB

Download
memory/5040-58-0x00007FF9E60B0000-0x00007FF9E6B71000-memory.dmp

Filesize
10.8MB

Download
memory/5040-2-0x00007FF9E60B0000-0x00007FF9E6B71000-memory.dmp

Filesize
10.8MB

Download
memory/5040-1-0x0000000000C20000-0x0000000000C58000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads