xworm | fdc1271b3f571e656af8be8b944641592f2cb27b422756921fbfc6eeef55710e

General

Target

Xworm5.6.exe
Size

212KB
MD5

79a261a7ed31322af647ac3779479773
SHA1

e392f7feeb3ae0e5eb74deebdb0a983a0bb22be5
SHA256

fdc1271b3f571e656af8be8b944641592f2cb27b422756921fbfc6eeef55710e
SHA512

137b082fc232a5112eabc9f9d5c66cc8186f4b5047f0328cc427311d3afd526c3b893896c29ea548bfea20485cf8c09a0299bc71dd0b85a10efd162549c33179
SSDEEP

3072:mIl0bB95AOnVgk0A2ewhLapuvpAsZOyMqmyBeYVYA:/ubVhVnY/GWGwqqm1

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

java-either.gl.at.ply.gg:50133

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2164-1-0x0000000000F50000-0x0000000000F8C000-memory.dmp	family_xworm
behavioral1/files/0x000c000000012254-34.dat	family_xworm
behavioral1/memory/2928-36-0x00000000010F0000-0x000000000112C000-memory.dmp	family_xworm
behavioral1/memory/2300-39-0x0000000001340000-0x000000000137C000-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
2092	powershell.exe
2900	powershell.exe
1488	powershell.exe
1036	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Xworm.lnk	Xworm5.6.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Xworm.lnk	Xworm5.6.exe

Executes dropped EXE 2 IoCs

pid	Process
2928	Xworm
2300	Xworm

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Xworm = "C:\\Users\\Admin\\AppData\\Roaming\\Xworm"	Xworm5.6.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
2556	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2900	powershell.exe
1488	powershell.exe
1036	powershell.exe
2092	powershell.exe
2164	Xworm5.6.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2164	Xworm5.6.exe
Token: SeDebugPrivilege	2900	powershell.exe
Token: SeDebugPrivilege	1488	powershell.exe
Token: SeDebugPrivilege	1036	powershell.exe
Token: SeDebugPrivilege	2092	powershell.exe
Token: SeDebugPrivilege	2164	Xworm5.6.exe
Token: SeDebugPrivilege	2928	Xworm
Token: SeDebugPrivilege	2300	Xworm

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2164	Xworm5.6.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2164 wrote to memory of 2900	2164	Xworm5.6.exe	30
PID 2164 wrote to memory of 2900	2164	Xworm5.6.exe	30
PID 2164 wrote to memory of 2900	2164	Xworm5.6.exe	30
PID 2164 wrote to memory of 1488	2164	Xworm5.6.exe	32
PID 2164 wrote to memory of 1488	2164	Xworm5.6.exe	32
PID 2164 wrote to memory of 1488	2164	Xworm5.6.exe	32
PID 2164 wrote to memory of 1036	2164	Xworm5.6.exe	34
PID 2164 wrote to memory of 1036	2164	Xworm5.6.exe	34
PID 2164 wrote to memory of 1036	2164	Xworm5.6.exe	34
PID 2164 wrote to memory of 2092	2164	Xworm5.6.exe	36
PID 2164 wrote to memory of 2092	2164	Xworm5.6.exe	36
PID 2164 wrote to memory of 2092	2164	Xworm5.6.exe	36
PID 2164 wrote to memory of 2556	2164	Xworm5.6.exe	38
PID 2164 wrote to memory of 2556	2164	Xworm5.6.exe	38
PID 2164 wrote to memory of 2556	2164	Xworm5.6.exe	38
PID 2820 wrote to memory of 2928	2820	taskeng.exe	41
PID 2820 wrote to memory of 2928	2820	taskeng.exe	41
PID 2820 wrote to memory of 2928	2820	taskeng.exe	41
PID 2820 wrote to memory of 2300	2820	taskeng.exe	42
PID 2820 wrote to memory of 2300	2820	taskeng.exe	42
PID 2820 wrote to memory of 2300	2820	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\Xworm5.6.exe
"C:\Users\Admin\AppData\Local\Temp\Xworm5.6.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:2164
- 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\Xworm5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2900
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xworm5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1488
- 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\Xworm'
  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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2092
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Xworm" /tr "C:\Users\Admin\AppData\Roaming\Xworm"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2556

C:\Windows\system32\taskeng.exe
taskeng.exe {8880BDBE-A355-4035-8594-6784615F281D} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Roaming\Xworm
  C:\Users\Admin\AppData\Roaming\Xworm
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2928
- C:\Users\Admin\AppData\Roaming\Xworm
  C:\Users\Admin\AppData\Roaming\Xworm
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2300

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
9faf40cc7b9995b5c9957635e03e938f

SHA1
2ae1de519ef20ad44dc97ac2befbaf0078fcb9c5

SHA256
4503ca98e53d2c13a38daa4891f20e3653f4758db363bbea9d7b9d5087dab8e9

SHA512
dd9369ce1b62f87d112a16c575549134cd72b2f54b8165611e3cfc5bea53c27f166d068c61b86e8d25969891046106ca3fd61380d6edfe98c45f9aeda4d1ee6c

Download Submit
C:\Users\Admin\AppData\Roaming\Xworm

Filesize
212KB

MD5
79a261a7ed31322af647ac3779479773

SHA1
e392f7feeb3ae0e5eb74deebdb0a983a0bb22be5

SHA256
fdc1271b3f571e656af8be8b944641592f2cb27b422756921fbfc6eeef55710e

SHA512
137b082fc232a5112eabc9f9d5c66cc8186f4b5047f0328cc427311d3afd526c3b893896c29ea548bfea20485cf8c09a0299bc71dd0b85a10efd162549c33179

Download Submit
memory/1488-15-0x000000001B110000-0x000000001B3F2000-memory.dmp

Filesize
2.9MB

Download
memory/1488-16-0x0000000002410000-0x0000000002418000-memory.dmp

Filesize
32KB

Download
memory/2164-3-0x000007FEF5A70000-0x000007FEF645C000-memory.dmp

Filesize
9.9MB

Download
memory/2164-2-0x000007FEF5A73000-0x000007FEF5A74000-memory.dmp

Filesize
4KB

Download
memory/2164-0-0x000007FEF5A73000-0x000007FEF5A74000-memory.dmp

Filesize
4KB

Download
memory/2164-23-0x000007FEF5A70000-0x000007FEF645C000-memory.dmp

Filesize
9.9MB

Download
memory/2164-1-0x0000000000F50000-0x0000000000F8C000-memory.dmp

Filesize
240KB

Download
memory/2300-39-0x0000000001340000-0x000000000137C000-memory.dmp

Filesize
240KB

Download
memory/2900-8-0x000000001B2F0000-0x000000001B5D2000-memory.dmp

Filesize
2.9MB

Download
memory/2900-9-0x0000000002190000-0x0000000002198000-memory.dmp

Filesize
32KB

Download
memory/2928-36-0x00000000010F0000-0x000000000112C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads