xworm | aed72392c30af8bbd8d7d2978992fb0b499333741e799e1e14f285af74e3b9dc

General

Target

XClient.exe
Size

62KB
MD5

96fedf6b9bdef61b693c3c895e647ec9
SHA1

d75b1c6021af31f40414e892d9fdc16132df9a82
SHA256

aed72392c30af8bbd8d7d2978992fb0b499333741e799e1e14f285af74e3b9dc
SHA512

3fab7337d135387c5ee923960985b0c58c7c45ce34c97e7a984549e805f6ddc71bde72ba83f9473fd48c8cd380e3e75674a21e2250d7eccfdcae011caea73384
SSDEEP

1536:J4OZWBxEzUFdvJzJfvpX5+bLW+6NG+MOc8m+3R:2OABxucdBzJfvpJ+bL1+MOc8mQR

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

posted-channels.gl.at.ply.gg:38837

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/3060-1-0x0000000001000000-0x0000000001016000-memory.dmp	family_xworm
behavioral1/files/0x0004000000004ed7-10.dat	family_xworm
behavioral1/memory/2172-12-0x0000000000DE0000-0x0000000000DF6000-memory.dmp	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 opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	XClient.exe

Executes dropped EXE 2 IoCs

pid	Process
2172	XClient.exe
2940	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-1-5-21-677481364-2238709445-1347953534-1000\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

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
1812	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3060	XClient.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3060	XClient.exe
Token: SeDebugPrivilege	3060	XClient.exe
Token: SeDebugPrivilege	2172	XClient.exe
Token: SeDebugPrivilege	2940	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3060	XClient.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 1812	3060	XClient.exe	31
PID 3060 wrote to memory of 1812	3060	XClient.exe	31
PID 3060 wrote to memory of 1812	3060	XClient.exe	31
PID 2900 wrote to memory of 2172	2900	taskeng.exe	34
PID 2900 wrote to memory of 2172	2900	taskeng.exe	34
PID 2900 wrote to memory of 2172	2900	taskeng.exe	34
PID 2900 wrote to memory of 2940	2900	taskeng.exe	36
PID 2900 wrote to memory of 2940	2900	taskeng.exe	36
PID 2900 wrote to memory of 2940	2900	taskeng.exe	36

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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3060
- 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:1812

C:\Windows\system32\taskeng.exe
taskeng.exe {CE093822-9B09-49E8-95D9-9E4D2F2822B3} S-1-5-21-677481364-2238709445-1347953534-1000:JXXXDSWS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2172
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2940

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\Roaming\XClient.exe

Filesize
62KB

MD5
96fedf6b9bdef61b693c3c895e647ec9

SHA1
d75b1c6021af31f40414e892d9fdc16132df9a82

SHA256
aed72392c30af8bbd8d7d2978992fb0b499333741e799e1e14f285af74e3b9dc

SHA512
3fab7337d135387c5ee923960985b0c58c7c45ce34c97e7a984549e805f6ddc71bde72ba83f9473fd48c8cd380e3e75674a21e2250d7eccfdcae011caea73384

Download Submit
memory/2172-12-0x0000000000DE0000-0x0000000000DF6000-memory.dmp

Filesize
88KB

Download
memory/3060-0-0x000007FEF5DF3000-0x000007FEF5DF4000-memory.dmp

Filesize
4KB

Download
memory/3060-1-0x0000000001000000-0x0000000001016000-memory.dmp

Filesize
88KB

Download
memory/3060-6-0x000007FEF5DF0000-0x000007FEF67DC000-memory.dmp

Filesize
9.9MB

Download
memory/3060-7-0x000007FEF5DF3000-0x000007FEF5DF4000-memory.dmp

Filesize
4KB

Download
memory/3060-8-0x000007FEF5DF0000-0x000007FEF67DC000-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