xworm | 3e8a1f15f88678091760183cde7476a27a66d61587579b4c953158b7e26927c2

General

Target

XClient.exe
Size

59KB
MD5

95c67b6f5d16d2bc518c149222406fca
SHA1

dc80f0eccdfd344d61f625a2bba0a0eae7df1d9e
SHA256

3e8a1f15f88678091760183cde7476a27a66d61587579b4c953158b7e26927c2
SHA512

c1dd3f3bd46ecae27dce975e6ad03bc40288bbdc2433531303a8ce889a05af59bf8135b46d16faace4550f8e1396b1172e430442d61d096d52c838c9764dfd60
SSDEEP

768:AKNQC2Bomf5ceSC0m7ZfnkQPciHsMHVkbRjRtXDRRyB5YwTRRID7BbO9hOczsd:AGkqEmkkCkbRjRtXDwtRcbO9hU

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

perfect-ringtones.gl.at.ply.gg:15597

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1932-1-0x0000000000260000-0x0000000000276000-memory.dmp	family_xworm

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

Deletes itself 1 IoCs

pid	Process
2664	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Defender.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Defender.lnk	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Defender"	XClient.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
1448	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
2428	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 2428	1932	XClient.exe	30
PID 1932 wrote to memory of 2428	1932	XClient.exe	30
PID 1932 wrote to memory of 2428	1932	XClient.exe	30
PID 1932 wrote to memory of 2628	1932	XClient.exe	34
PID 1932 wrote to memory of 2628	1932	XClient.exe	34
PID 1932 wrote to memory of 2628	1932	XClient.exe	34
PID 1932 wrote to memory of 2664	1932	XClient.exe	36
PID 1932 wrote to memory of 2664	1932	XClient.exe	36
PID 1932 wrote to memory of 2664	1932	XClient.exe	36
PID 2664 wrote to memory of 1448	2664	cmd.exe	38
PID 2664 wrote to memory of 1448	2664	cmd.exe	38
PID 2664 wrote to memory of 1448	2664	cmd.exe	38

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:1932
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Windows Defender" /tr "C:\Users\Admin\AppData\Roaming\Windows Defender"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2428
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "Windows Defender"
  2⤵
  PID:2628
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE8AA.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2664
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1448

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\Temp\tmpE8AA.tmp.bat

Filesize
159B

MD5
1633c80ce8d056458e1be8d5f91f8383

SHA1
39a2f60c8a7b974c570e7083f3497c693a93f805

SHA256
09ed7496f4167f727e93d354c429fe549083da71232b9f0f7f0479a0952fccbe

SHA512
3db502149408fbb0cab9703b6de95b56fadd80178300d5719103bb7790e9fc71b9aefc1370d5ff9a504301d9921249996d52bc314a10dc7d97220c42ab1f8b39

Download Submit
memory/1932-0-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/1932-1-0x0000000000260000-0x0000000000276000-memory.dmp

Filesize
88KB

Download
memory/1932-5-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download
memory/1932-6-0x000007FEF5883000-0x000007FEF5884000-memory.dmp

Filesize
4KB

Download
memory/1932-7-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download
memory/1932-8-0x0000000002180000-0x000000000218A000-memory.dmp

Filesize
40KB

Download
memory/1932-19-0x000007FEF5880000-0x000007FEF626C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads