xworm | b0df6f7ff34f3a228bd4c85300103f78c2de909876bda06726528265df8439dd

General

Target

XClient.exe
Size

64KB
MD5

13893da2e88195aef8c2097410d1a153
SHA1

58933f2f3b8b4d4204388706f68bdd474bda2ad3
SHA256

b0df6f7ff34f3a228bd4c85300103f78c2de909876bda06726528265df8439dd
SHA512

110ef600511d98c91939b2880fd9dc53e78b59fdc57a05a4f8b51006ab82a99c64328df28b6fd1b1ab1201de692237984af99282e5f32a818d320fa7fa76382b
SSDEEP

1536:9R63CAOBq9j9lKQTb3antVEv3P9I9OK+TNKE:v7FQTb3BfP9I9ONN7

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

camera-recovered.gl.at.ply.gg:9924

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1800-1-0x0000000000F20000-0x0000000000F36000-memory.dmp	family_xworm
behavioral2/files/0x000800000001e58b-9.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
4364	XClient.exe
528	XClient.exe
892	XClient.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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.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
15	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
3960	schtasks.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	XClient.exe
Token: SeDebugPrivilege	1800	XClient.exe
Token: SeDebugPrivilege	4364	XClient.exe
Token: SeDebugPrivilege	528	XClient.exe
Token: SeDebugPrivilege	892	XClient.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 3960	1800	XClient.exe	95
PID 1800 wrote to memory of 3960	1800	XClient.exe	95

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3960

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4364

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:528

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:892

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
64KB

MD5
13893da2e88195aef8c2097410d1a153

SHA1
58933f2f3b8b4d4204388706f68bdd474bda2ad3

SHA256
b0df6f7ff34f3a228bd4c85300103f78c2de909876bda06726528265df8439dd

SHA512
110ef600511d98c91939b2880fd9dc53e78b59fdc57a05a4f8b51006ab82a99c64328df28b6fd1b1ab1201de692237984af99282e5f32a818d320fa7fa76382b

Download Submit
memory/1800-0-0x00007FFECECA3000-0x00007FFECECA5000-memory.dmp

Filesize
8KB

Download
memory/1800-1-0x0000000000F20000-0x0000000000F36000-memory.dmp

Filesize
88KB

Download
memory/1800-2-0x00007FFECECA0000-0x00007FFECF761000-memory.dmp

Filesize
10.8MB

Download
memory/1800-7-0x00007FFECECA0000-0x00007FFECF761000-memory.dmp

Filesize
10.8MB

Download
memory/1800-8-0x000000001BC20000-0x000000001BC2C000-memory.dmp

Filesize
48KB

Download
memory/4364-11-0x00007FFECECA0000-0x00007FFECF761000-memory.dmp

Filesize
10.8MB

Download
memory/4364-13-0x00007FFECECA0000-0x00007FFECF761000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads