xworm | 799a78dff2f087686b22635366263dcc9bf4d1daf620ae0118bf90088e87a6f2

General

Target

XClient.scr
Size

71KB
MD5

5513183baf417b3a7190752a82b208b8
SHA1

f8b8462561ee345d02ce68b0faa279ffabb8a4b0
SHA256

799a78dff2f087686b22635366263dcc9bf4d1daf620ae0118bf90088e87a6f2
SHA512

cdea1aff72f627e22fd2b135ae9de4108caa35b49ff88b57a9ca9204f31e16fa05b69651d3953ebc054d8bca4c84db6fadccdc80b3a4e19aa1d600ab360178b1
SSDEEP

768:bMa8JQRkmIoU8LFwukRtg5JU2mB4UQV99gFaBPB9vq2TnbE5nX+bvB7Pn+jdUeML:MuRnIApwUoun9bER+bvp+Fm6K1OLPSF

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

dead-he.gl.at.ply.gg:57200

Attributes

Install_directory
%Public%
install_file
X.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/656-1-0x0000000000260000-0x0000000000278000-memory.dmp	family_xworm
behavioral1/files/0x000a000000012118-10.dat	family_xworm
behavioral1/memory/2424-12-0x00000000012C0000-0x00000000012D8000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2424	X.exe
1616	X.exe
1360	X.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-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Run\X = "C:\\Users\\Public\\X.exe"	XClient.scr

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
2560	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
656	XClient.scr

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	656	XClient.scr
Token: SeDebugPrivilege	656	XClient.scr
Token: SeDebugPrivilege	2424	X.exe
Token: SeDebugPrivilege	1616	X.exe
Token: SeDebugPrivilege	1360	X.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
656	XClient.scr

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 656 wrote to memory of 2560	656	XClient.scr	29
PID 656 wrote to memory of 2560	656	XClient.scr	29
PID 656 wrote to memory of 2560	656	XClient.scr	29
PID 2460 wrote to memory of 2424	2460	taskeng.exe	33
PID 2460 wrote to memory of 2424	2460	taskeng.exe	33
PID 2460 wrote to memory of 2424	2460	taskeng.exe	33
PID 2460 wrote to memory of 1616	2460	taskeng.exe	34
PID 2460 wrote to memory of 1616	2460	taskeng.exe	34
PID 2460 wrote to memory of 1616	2460	taskeng.exe	34
PID 2460 wrote to memory of 1360	2460	taskeng.exe	35
PID 2460 wrote to memory of 1360	2460	taskeng.exe	35
PID 2460 wrote to memory of 1360	2460	taskeng.exe	35

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.scr
"C:\Users\Admin\AppData\Local\Temp\XClient.scr" /S
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:656
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "X" /tr "C:\Users\Public\X.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2560

C:\Windows\system32\taskeng.exe
taskeng.exe {84A249F8-DE5F-480A-A7E2-84E1A61A70FF} S-1-5-21-3502430532-24693940-2469786940-1000:PSBQWFYT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Users\Public\X.exe
  C:\Users\Public\X.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2424
- C:\Users\Public\X.exe
  C:\Users\Public\X.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1616
- C:\Users\Public\X.exe
  C:\Users\Public\X.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1360

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\Public\X.exe

Filesize
71KB

MD5
5513183baf417b3a7190752a82b208b8

SHA1
f8b8462561ee345d02ce68b0faa279ffabb8a4b0

SHA256
799a78dff2f087686b22635366263dcc9bf4d1daf620ae0118bf90088e87a6f2

SHA512
cdea1aff72f627e22fd2b135ae9de4108caa35b49ff88b57a9ca9204f31e16fa05b69651d3953ebc054d8bca4c84db6fadccdc80b3a4e19aa1d600ab360178b1

Download Submit
memory/656-0-0x000007FEF5743000-0x000007FEF5744000-memory.dmp

Filesize
4KB

Download
memory/656-1-0x0000000000260000-0x0000000000278000-memory.dmp

Filesize
96KB

Download
memory/656-6-0x000007FEF5740000-0x000007FEF612C000-memory.dmp

Filesize
9.9MB

Download
memory/656-7-0x000007FEF5743000-0x000007FEF5744000-memory.dmp

Filesize
4KB

Download
memory/656-8-0x000007FEF5740000-0x000007FEF612C000-memory.dmp

Filesize
9.9MB

Download
memory/2424-12-0x00000000012C0000-0x00000000012D8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads