xworm | 429c847c13edb9c836b9fa6a8a1481ff24754d3ef0ceb6f2d86f475e2574bd02

General

Target

XClient.exe
Size

50KB
MD5

fceed5f165bc95503b1c9314ff7ec459
SHA1

c62b48cb6728bbe7e9aeb74c9398c4bb6666f1e3
SHA256

429c847c13edb9c836b9fa6a8a1481ff24754d3ef0ceb6f2d86f475e2574bd02
SHA512

f149191a07b91419446e7bee755545a95171c8a30439e2e53604b9262098415c478656f8793931d9f947bb64822cd263cc6a845344841c31fe8bf0ec3195ab08
SSDEEP

768:NiKph0KQHQPbe+rNh3+W4dF8EUWb7YIq78OMOV6hU81Kj:NiKp+pmee1+988b7YkrOV6PKj

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

camera-recovered.gl.at.ply:9924

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4376-1-0x00000000000B0000-0x00000000000C2000-memory.dmp	family_xworm
behavioral1/files/0x000600000002a868-9.dat	family_xworm

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

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 5 IoCs

pid	Process
3344	XClient.exe
4228	XClient.exe
1488	XClient.exe
832	XClient.exe
1156	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-1-5-21-4248760313-3670024077-2384670640-1000\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
1	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
5000	schtasks.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4376	XClient.exe
Token: SeDebugPrivilege	4376	XClient.exe
Token: SeDebugPrivilege	3344	XClient.exe
Token: SeDebugPrivilege	4228	XClient.exe
Token: SeDebugPrivilege	1488	XClient.exe
Token: SeDebugPrivilege	832	XClient.exe
Token: SeDebugPrivilege	1156	XClient.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 5000	4376	XClient.exe	81
PID 4376 wrote to memory of 5000	4376	XClient.exe	81

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⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4376
- 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:5000

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3344

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4228

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1488

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:832

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1156

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
50KB

MD5
fceed5f165bc95503b1c9314ff7ec459

SHA1
c62b48cb6728bbe7e9aeb74c9398c4bb6666f1e3

SHA256
429c847c13edb9c836b9fa6a8a1481ff24754d3ef0ceb6f2d86f475e2574bd02

SHA512
f149191a07b91419446e7bee755545a95171c8a30439e2e53604b9262098415c478656f8793931d9f947bb64822cd263cc6a845344841c31fe8bf0ec3195ab08

Download Submit
memory/3344-11-0x00007FFB24C30000-0x00007FFB256F2000-memory.dmp

Filesize
10.8MB

Download
memory/3344-13-0x00007FFB24C30000-0x00007FFB256F2000-memory.dmp

Filesize
10.8MB

Download
memory/4376-0-0x00007FFB24C33000-0x00007FFB24C35000-memory.dmp

Filesize
8KB

Download
memory/4376-1-0x00000000000B0000-0x00000000000C2000-memory.dmp

Filesize
72KB

Download
memory/4376-2-0x00007FFB24C30000-0x00007FFB256F2000-memory.dmp

Filesize
10.8MB

Download
memory/4376-7-0x00007FFB24C33000-0x00007FFB24C35000-memory.dmp

Filesize
8KB

Download
memory/4376-8-0x00007FFB24C30000-0x00007FFB256F2000-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