xworm | ba5a98fbc6a2eaf3307b1e62af2c4224277adb3e2c510428095a0fc497749ecd

General

Target

XClientfpi.exe
Size

62KB
MD5

3628a746ca388c9f72824334c8078834
SHA1

2bf50b5c42a37aaed6bba0481707c1ce52269c92
SHA256

ba5a98fbc6a2eaf3307b1e62af2c4224277adb3e2c510428095a0fc497749ecd
SHA512

8f418fa87316a052c6ef529ee5821a9c1e13d4980bcca06e458fd48acfa53014161464f5630f42c81629351ca3a45c7763e939325887084e029864cda0752bff
SSDEEP

768:mxQBlgZll1JRtVClBh5zpg5jtVuHYZ/rRa5gM5HnIimtZGguZb86c8uIJIIpSqnP:mLRt2X5zJGN0pI/hub8P8ngqhOPJu

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

26.ip.gl.ply.gg:51287

Attributes

Install_directory
%AppData%
install_file
windowscleaner.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4872-1-0x0000000000290000-0x00000000002A6000-memory.dmp	family_xworm
behavioral1/files/0x0008000000023d27-10.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-100612193-3312047696-905266872-1000\Control Panel\International\Geo\Nation	XClientfpi.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
1340	windowscleaner.exe
1120	windowscleaner.exe
4236	windowscleaner.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-1-5-21-100612193-3312047696-905266872-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\windowscleaner = "C:\\Users\\Admin\\AppData\\Roaming\\windowscleaner.exe"	XClientfpi.exe

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
1476	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4872	XClientfpi.exe
Token: SeDebugPrivilege	1340	windowscleaner.exe
Token: SeDebugPrivilege	1120	windowscleaner.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4872 wrote to memory of 1476	4872	XClientfpi.exe	94
PID 4872 wrote to memory of 1476	4872	XClientfpi.exe	94

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\XClientfpi.exe
"C:\Users\Admin\AppData\Local\Temp\XClientfpi.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4872
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "windowscleaner" /tr "C:\Users\Admin\AppData\Roaming\windowscleaner.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1476

C:\Users\Admin\AppData\Roaming\windowscleaner.exe
C:\Users\Admin\AppData\Roaming\windowscleaner.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1340

C:\Users\Admin\AppData\Roaming\windowscleaner.exe
C:\Users\Admin\AppData\Roaming\windowscleaner.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1120

C:\Users\Admin\AppData\Roaming\windowscleaner.exe
C:\Users\Admin\AppData\Roaming\windowscleaner.exe
1⤵
- Executes dropped EXE
PID:4236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\windowscleaner.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
62KB

MD5
3628a746ca388c9f72824334c8078834

SHA1
2bf50b5c42a37aaed6bba0481707c1ce52269c92

SHA256
ba5a98fbc6a2eaf3307b1e62af2c4224277adb3e2c510428095a0fc497749ecd

SHA512
8f418fa87316a052c6ef529ee5821a9c1e13d4980bcca06e458fd48acfa53014161464f5630f42c81629351ca3a45c7763e939325887084e029864cda0752bff

Download Submit
memory/1340-11-0x00007FFEF3560000-0x00007FFEF4021000-memory.dmp

Filesize
10.8MB

Download
memory/1340-13-0x00007FFEF3560000-0x00007FFEF4021000-memory.dmp

Filesize
10.8MB

Download
memory/4872-0-0x00007FFEF3563000-0x00007FFEF3565000-memory.dmp

Filesize
8KB

Download
memory/4872-1-0x0000000000290000-0x00000000002A6000-memory.dmp

Filesize
88KB

Download
memory/4872-6-0x00007FFEF3560000-0x00007FFEF4021000-memory.dmp

Filesize
10.8MB

Download
memory/4872-7-0x00007FFEF3563000-0x00007FFEF3565000-memory.dmp

Filesize
8KB

Download
memory/4872-8-0x00007FFEF3560000-0x00007FFEF4021000-memory.dmp

Filesize
10.8MB

Download
memory/4872-17-0x00000000008D0000-0x00000000008DC000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads