xworm | a756441067677b61354cdcc685d0602c6ffc362f8e702e8d953394d2ae794c93

General

Target

services.exe
Size

77KB
MD5

4b28f21bcd14645f1666fccafd727f2e
SHA1

4245951f19e8928803b02f9a2a9ca87b0c8c35b9
SHA256

a756441067677b61354cdcc685d0602c6ffc362f8e702e8d953394d2ae794c93
SHA512

c7a03d02db5c6b4fea1e826bfc6ca37f2575a3e2f92f69f6d9f43d2ce8633280eef6af9c928085a01642548ba9487cf2dd615ab063a5b0ced4533a9455127dd4
SSDEEP

1536:hdmm8BuGI4RJolY2ivEfb2ffsuwzpLR6IGoVOxcE:nbLivEfb2ffCzeoVOxZ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

147.185.221.20:37760

Attributes

Install_directory
%AppData%
install_file
Service.exe

Extracted

Family

xworm

Version

3.1

C2

adult-purchased.gl.at.ply.gg:13795

Mutex

WAQMuWkdncL23W2E

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/3068-1-0x0000000000360000-0x000000000037A000-memory.dmp	family_xworm
behavioral1/memory/3068-31-0x0000000001FC0000-0x0000000001FCE000-memory.dmp	family_xworm
behavioral1/files/0x000e000000013f2c-33.dat	family_xworm
behavioral1/memory/2160-35-0x0000000000C60000-0x0000000000C7A000-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
1452	powershell.exe
2544	powershell.exe
2556	powershell.exe
2924	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2160	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-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\Service = "C:\\Users\\Admin\\AppData\\Roaming\\Service.exe"	services.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
1552	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3068	services.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2544	powershell.exe
2556	powershell.exe
2924	powershell.exe
1452	powershell.exe
3068	services.exe
3068	services.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3068	services.exe
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeDebugPrivilege	2556	powershell.exe
Token: SeDebugPrivilege	2924	powershell.exe
Token: SeDebugPrivilege	1452	powershell.exe
Token: SeDebugPrivilege	3068	services.exe
Token: SeDebugPrivilege	2160	Service.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3068	services.exe
3068	services.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 2544	3068	services.exe	29
PID 3068 wrote to memory of 2544	3068	services.exe	29
PID 3068 wrote to memory of 2544	3068	services.exe	29
PID 3068 wrote to memory of 2556	3068	services.exe	31
PID 3068 wrote to memory of 2556	3068	services.exe	31
PID 3068 wrote to memory of 2556	3068	services.exe	31
PID 3068 wrote to memory of 2924	3068	services.exe	33
PID 3068 wrote to memory of 2924	3068	services.exe	33
PID 3068 wrote to memory of 2924	3068	services.exe	33
PID 3068 wrote to memory of 1452	3068	services.exe	35
PID 3068 wrote to memory of 1452	3068	services.exe	35
PID 3068 wrote to memory of 1452	3068	services.exe	35
PID 3068 wrote to memory of 1552	3068	services.exe	37
PID 3068 wrote to memory of 1552	3068	services.exe	37
PID 3068 wrote to memory of 1552	3068	services.exe	37
PID 1584 wrote to memory of 2160	1584	taskeng.exe	40
PID 1584 wrote to memory of 2160	1584	taskeng.exe	40
PID 1584 wrote to memory of 2160	1584	taskeng.exe	40

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\services.exe
"C:\Users\Admin\AppData\Local\Temp\services.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:3068
- 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\services.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2544
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'services.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2556
- 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\Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2924
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Service.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1452
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Service" /tr "C:\Users\Admin\AppData\Roaming\Service.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1552

C:\Windows\system32\taskeng.exe
taskeng.exe {93269C72-4D2E-41DE-A551-1C16400720E1} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Users\Admin\AppData\Roaming\Service.exe
  C:\Users\Admin\AppData\Roaming\Service.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2160

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
10d11b60ed92208d88c9b3bd8fb5ee59

SHA1
b5ed8ce3a23acc2a97c4eae3a32029d753dc2968

SHA256
ecb8241a84c5d6688654a018e26320bbfaa1d92a93f65e9929a53008363433ff

SHA512
4ddd6b7d6ef39a4d319cde2b0f5e9a26e6636cf69de3330b21df5d215a20b4a2aae4a52e047b89f98d8661aa06e5d9a047a7f374011121d1d02d10f6199d6ade

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

Filesize
77KB

MD5
4b28f21bcd14645f1666fccafd727f2e

SHA1
4245951f19e8928803b02f9a2a9ca87b0c8c35b9

SHA256
a756441067677b61354cdcc685d0602c6ffc362f8e702e8d953394d2ae794c93

SHA512
c7a03d02db5c6b4fea1e826bfc6ca37f2575a3e2f92f69f6d9f43d2ce8633280eef6af9c928085a01642548ba9487cf2dd615ab063a5b0ced4533a9455127dd4

Download Submit
memory/2160-35-0x0000000000C60000-0x0000000000C7A000-memory.dmp

Filesize
104KB

Download
memory/2544-7-0x0000000002C30000-0x0000000002CB0000-memory.dmp

Filesize
512KB

Download
memory/2544-8-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2544-9-0x0000000001D70000-0x0000000001D78000-memory.dmp

Filesize
32KB

Download
memory/2556-15-0x000000001B500000-0x000000001B7E2000-memory.dmp

Filesize
2.9MB

Download
memory/2556-16-0x00000000029A0000-0x00000000029A8000-memory.dmp

Filesize
32KB

Download
memory/3068-0-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

Filesize
4KB

Download
memory/3068-31-0x0000000001FC0000-0x0000000001FCE000-memory.dmp

Filesize
56KB

Download
memory/3068-2-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download
memory/3068-1-0x0000000000360000-0x000000000037A000-memory.dmp

Filesize
104KB

Download
memory/3068-36-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

Filesize
4KB

Download
memory/3068-37-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads