xworm | 26eb0d93904680fef2d4df49b9d55a6e54f8b341a888bb6bec2fec1e711e9536

General

Target

injector.exe
Size

36KB
MD5

1d9727f02bd353afc1fedee98e4acfbb
SHA1

2263f809ead639430a130976ea4722aacb3e1362
SHA256

26eb0d93904680fef2d4df49b9d55a6e54f8b341a888bb6bec2fec1e711e9536
SHA512

62390fc747f737a15879a521f68827ab73dd26e1ee08837f3eaad542dc435703f98552b187aa19c760dc3a12c1a4d183c4d5450e4458c1a1111f131fd3de97cc
SSDEEP

768:F2C78uvbhLyScu6JBbTZ6VFyc9PZO/h7AX:Ft78utLySuJBbTZwF39PZO/KX

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

six-usb.gl.at.ply.gg:49722

Mutex

TcBEJUp0a8DkShx2

Attributes

Install_directory
%AppData%
install_file
System User.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2788-1-0x0000000001350000-0x0000000001360000-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
3012	cmd.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System User.lnk	injector.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System User.lnk	injector.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\System User = "C:\\Users\\Admin\\AppData\\Roaming\\System User.exe"	injector.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

evasion

pid	Process
1284	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
2876	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2788	injector.exe
Token: SeDebugPrivilege	2788	injector.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2876	2788	injector.exe	31
PID 2788 wrote to memory of 2876	2788	injector.exe	31
PID 2788 wrote to memory of 2876	2788	injector.exe	31
PID 2788 wrote to memory of 1940	2788	injector.exe	35
PID 2788 wrote to memory of 1940	2788	injector.exe	35
PID 2788 wrote to memory of 1940	2788	injector.exe	35
PID 2788 wrote to memory of 3012	2788	injector.exe	37
PID 2788 wrote to memory of 3012	2788	injector.exe	37
PID 2788 wrote to memory of 3012	2788	injector.exe	37
PID 3012 wrote to memory of 1284	3012	cmd.exe	39
PID 3012 wrote to memory of 1284	3012	cmd.exe	39
PID 3012 wrote to memory of 1284	3012	cmd.exe	39

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\injector.exe
"C:\Users\Admin\AppData\Local\Temp\injector.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System User" /tr "C:\Users\Admin\AppData\Roaming\System User.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2876
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "System User"
  2⤵
  PID:1940
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp476C.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1284

C:\Windows\system32\taskeng.exe
taskeng.exe {F1DFE088-06E0-4853-929B-9B684F8E1B2E} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
PID:3000

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\tmp476C.tmp.bat

Filesize
160B

MD5
8097f245510434e9c21a112c536f1cd8

SHA1
00de437a5735c6e3432fa6bda0f0a1e61f60c22e

SHA256
40fda0c16399feea3a6c2b056490f8dd93be8a6d97dee548bfb1144767915acf

SHA512
ff2c15ca8354b1b2dadc3bfdfd1f95b047016a184d9b7a303a36d5e413f48ab9065fd4bc568317a167db1211e21362e9bf8764e4b4844d35f9956326b41d398a

Download Submit
memory/2788-0-0x000007FEF53F3000-0x000007FEF53F4000-memory.dmp

Filesize
4KB

Download
memory/2788-1-0x0000000001350000-0x0000000001360000-memory.dmp

Filesize
64KB

Download
memory/2788-6-0x000007FEF53F0000-0x000007FEF5DDC000-memory.dmp

Filesize
9.9MB

Download
memory/2788-7-0x000007FEF53F3000-0x000007FEF53F4000-memory.dmp

Filesize
4KB

Download
memory/2788-8-0x000007FEF53F0000-0x000007FEF5DDC000-memory.dmp

Filesize
9.9MB

Download
memory/2788-19-0x000007FEF53F0000-0x000007FEF5DDC000-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