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
behavioral2/memory/1100-1-0x0000000000260000-0x0000000000276000-memory.dmp	family_xworm
behavioral2/files/0x000400000001e0ff-8.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-1-5-21-2593460650-190333679-3676257533-1000\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 1 IoCs

pid	Process
2100	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-1-5-21-2593460650-190333679-3676257533-1000\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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4236	timeout.exe

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
1624	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1100	XClientfpi.exe
Token: SeDebugPrivilege	2100	windowscleaner.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1100 wrote to memory of 1624	1100	XClientfpi.exe	92
PID 1100 wrote to memory of 1624	1100	XClientfpi.exe	92
PID 1100 wrote to memory of 4212	1100	XClientfpi.exe	109
PID 1100 wrote to memory of 4212	1100	XClientfpi.exe	109
PID 1100 wrote to memory of 1664	1100	XClientfpi.exe	111
PID 1100 wrote to memory of 1664	1100	XClientfpi.exe	111
PID 1664 wrote to memory of 4236	1664	cmd.exe	113
PID 1664 wrote to memory of 4236	1664	cmd.exe	113

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:1100
- 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:1624
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "windowscleaner"
  2⤵
  PID:4212
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD164.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1664
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4236

C:\Users\Admin\AppData\Roaming\windowscleaner.exe
C:\Users\Admin\AppData\Roaming\windowscleaner.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2100

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\Temp\tmpD164.tmp.bat

Filesize
162B

MD5
0e149196a3663d0bbc037cc134cd056d

SHA1
21f2cd991539c623585469f21ca1fb3b80e922bf

SHA256
c5e852400034c9f196abd7d37f9576ebae4e4c2b70a52392f179558709036541

SHA512
7e4300350bb22be8ef4e1d983752020df489d8fc0e4e0e558d8f077c5f948482c0c7d83e56cce0b93a2edda5aeea0c2597a251bf6f26d32955d8c4eab3d1ce27

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

Filesize
62KB

MD5
3628a746ca388c9f72824334c8078834

SHA1
2bf50b5c42a37aaed6bba0481707c1ce52269c92

SHA256
ba5a98fbc6a2eaf3307b1e62af2c4224277adb3e2c510428095a0fc497749ecd

SHA512
8f418fa87316a052c6ef529ee5821a9c1e13d4980bcca06e458fd48acfa53014161464f5630f42c81629351ca3a45c7763e939325887084e029864cda0752bff

Download Submit
memory/1100-1-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/1100-0-0x00007FFA5FB73000-0x00007FFA5FB75000-memory.dmp

Filesize
8KB

Download
memory/1100-6-0x00007FFA5FB70000-0x00007FFA60631000-memory.dmp

Filesize
10.8MB

Download
memory/1100-7-0x00007FFA5FB70000-0x00007FFA60631000-memory.dmp

Filesize
10.8MB

Download
memory/1100-19-0x00007FFA5FB70000-0x00007FFA60631000-memory.dmp

Filesize
10.8MB

Download
memory/2100-10-0x00007FFA5FB70000-0x00007FFA60631000-memory.dmp

Filesize
10.8MB

Download
memory/2100-12-0x00007FFA5FB70000-0x00007FFA60631000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads