xworm | 653dda55a4c53f5e20d427cdcc0aa7c484d30b7e0797d3cfc73e8a6b786694af

Resubmissions

21-05-2024 11:37

240521-nrfqaacb93 10

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 11:37

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General

Target

XClient.exe
Size

51KB
MD5

c3d51775fdc985a9a6168da2df484e53
SHA1

2a8c36d89a433a14e7f2b726083e7c74965511fc
SHA256

653dda55a4c53f5e20d427cdcc0aa7c484d30b7e0797d3cfc73e8a6b786694af
SHA512

5b738c3b733a6e328fe26c170ff01bd81e6f1eeb7ffd367dc53027dbca9947d5d356951589168579c739970cf4d2d859db28d890e084ac3f42f982972180f851
SSDEEP

768:pFFI/kN2DoHAs4/tLfmjC2fgo0ZbWgzbnXalm1OWONuzh0943gd:HF3N2PdfmO2fg1zbnXaYrONOE4Qd

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

values-painted.gl.at.ply.gg:12784

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2976-1-0x0000000000B20000-0x0000000000B34000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe	family_xworm
behavioral1/memory/2384-9-0x0000000000F00000-0x0000000000F14000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Executes dropped EXE 3 IoCs

Processes:

XClient.exeXClient.exeXClient.exe

pid process

2384 XClient.exe
2788 XClient.exe
576 XClient.exe

pid	process
2384	XClient.exe
2788	XClient.exe
576	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XClient.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2752 schtasks.exe

pid	process
2752	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

XClient.exeXClient.exeXClient.exeXClient.exe

description	pid	process
Token: SeDebugPrivilege	2976	XClient.exe
Token: SeDebugPrivilege	2384	XClient.exe
Token: SeDebugPrivilege	2788	XClient.exe
Token: SeDebugPrivilege	576	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

XClient.exetaskeng.exe

description	pid	process	target process
PID 2976 wrote to memory of 2752	2976	XClient.exe	schtasks.exe
PID 2976 wrote to memory of 2752	2976	XClient.exe	schtasks.exe
PID 2976 wrote to memory of 2752	2976	XClient.exe	schtasks.exe
PID 2492 wrote to memory of 2384	2492	taskeng.exe	XClient.exe
PID 2492 wrote to memory of 2384	2492	taskeng.exe	XClient.exe
PID 2492 wrote to memory of 2384	2492	taskeng.exe	XClient.exe
PID 2492 wrote to memory of 2788	2492	taskeng.exe	XClient.exe
PID 2492 wrote to memory of 2788	2492	taskeng.exe	XClient.exe
PID 2492 wrote to memory of 2788	2492	taskeng.exe	XClient.exe
PID 2492 wrote to memory of 576	2492	taskeng.exe	XClient.exe
PID 2492 wrote to memory of 576	2492	taskeng.exe	XClient.exe
PID 2492 wrote to memory of 576	2492	taskeng.exe	XClient.exe

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⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976

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⤵
- Creates scheduled task(s)
PID:2752

C:\Windows\system32\taskeng.exe
taskeng.exe {156861EC-F451-483B-ACE2-0E953DE9DBE0} S-1-5-21-268080393-3149932598-1824759070-1000:UHRQKJCP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2492

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2384

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2788

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
51KB

MD5
c3d51775fdc985a9a6168da2df484e53

SHA1
2a8c36d89a433a14e7f2b726083e7c74965511fc

SHA256
653dda55a4c53f5e20d427cdcc0aa7c484d30b7e0797d3cfc73e8a6b786694af

SHA512
5b738c3b733a6e328fe26c170ff01bd81e6f1eeb7ffd367dc53027dbca9947d5d356951589168579c739970cf4d2d859db28d890e084ac3f42f982972180f851

Download Submit
memory/2384-9-0x0000000000F00000-0x0000000000F14000-memory.dmp

Filesize
80KB

Download
memory/2976-0-0x000007FEF5E43000-0x000007FEF5E44000-memory.dmp

Filesize
4KB

Download
memory/2976-1-0x0000000000B20000-0x0000000000B34000-memory.dmp

Filesize
80KB

Download
memory/2976-5-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

Filesize
9.9MB

Download
memory/2976-10-0x000007FEF5E43000-0x000007FEF5E44000-memory.dmp

Filesize
4KB

Download
memory/2976-11-0x000007FEF5E40000-0x000007FEF682C000-memory.dmp

Filesize
9.9MB

Download