xworm | 4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7

General

Target

4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe
Size

35KB
MD5

144f398d59c44e3c5a5ed28b8ba1918a
SHA1

9adc52e3f04aa4f92cb288a02968526806b23ac8
SHA256

4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7
SHA512

8f883b6235a956200396553a6338d9619fed8811d93993578b38175df050502840199894065d5b6df770b364a99ce6139dbe9c938aa91bc69470eea57b26fa00
SSDEEP

768:jDMfF7zLKYs2Byj5MuddqLi9Fk9wFO/hY/22N:jkF7HKYs/1hd9Fk9wFO/Ku2N

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

nomorelife1.ddns.net:999

Mutex

RQyA6qFjTisp9KB8

Attributes

Install_directory
%AppData%
install_file
System.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2492-1-0x0000000000AE0000-0x0000000000AF0000-memory.dmp	family_xworm
behavioral1/files/0x000c000000012262-10.dat	family_xworm
behavioral1/memory/2424-12-0x00000000009D0000-0x00000000009E0000-memory.dmp	family_xworm
behavioral1/memory/1964-15-0x0000000000EF0000-0x0000000000F00000-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\System.lnk	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System.lnk	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe

Executes dropped EXE 2 IoCs

pid	Process
2424	System.exe
1964	System.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\System = "C:\\Users\\Admin\\AppData\\Roaming\\System.exe"	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.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
2180	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe
Token: SeDebugPrivilege	2424	System.exe
Token: SeDebugPrivilege	1964	System.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2180	2492	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe	30
PID 2492 wrote to memory of 2180	2492	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe	30
PID 2492 wrote to memory of 2180	2492	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe	30
PID 2940 wrote to memory of 2424	2940	taskeng.exe	33
PID 2940 wrote to memory of 2424	2940	taskeng.exe	33
PID 2940 wrote to memory of 2424	2940	taskeng.exe	33
PID 2940 wrote to memory of 1964	2940	taskeng.exe	34
PID 2940 wrote to memory of 1964	2940	taskeng.exe	34
PID 2940 wrote to memory of 1964	2940	taskeng.exe	34

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\4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe
"C:\Users\Admin\AppData\Local\Temp\4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System" /tr "C:\Users\Admin\AppData\Roaming\System.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2180

C:\Windows\system32\taskeng.exe
taskeng.exe {8BA9DD77-2D1C-4A6C-B369-95E6A34824F4} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Roaming\System.exe
  C:\Users\Admin\AppData\Roaming\System.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2424
- C:\Users\Admin\AppData\Roaming\System.exe
  C:\Users\Admin\AppData\Roaming\System.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1964

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
35KB

MD5
144f398d59c44e3c5a5ed28b8ba1918a

SHA1
9adc52e3f04aa4f92cb288a02968526806b23ac8

SHA256
4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7

SHA512
8f883b6235a956200396553a6338d9619fed8811d93993578b38175df050502840199894065d5b6df770b364a99ce6139dbe9c938aa91bc69470eea57b26fa00

Download Submit
memory/1964-15-0x0000000000EF0000-0x0000000000F00000-memory.dmp

Filesize
64KB

Download
memory/2424-12-0x00000000009D0000-0x00000000009E0000-memory.dmp

Filesize
64KB

Download
memory/2492-0-0x000007FEF6503000-0x000007FEF6504000-memory.dmp

Filesize
4KB

Download
memory/2492-1-0x0000000000AE0000-0x0000000000AF0000-memory.dmp

Filesize
64KB

Download
memory/2492-6-0x000007FEF6500000-0x000007FEF6EEC000-memory.dmp

Filesize
9.9MB

Download
memory/2492-7-0x000007FEF6503000-0x000007FEF6504000-memory.dmp

Filesize
4KB

Download
memory/2492-8-0x000007FEF6500000-0x000007FEF6EEC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads