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 2 IoCs

resource	yara_rule
behavioral2/memory/4988-1-0x0000000000550000-0x0000000000560000-memory.dmp	family_xworm
behavioral2/files/0x000e000000023b44-10.dat	family_xworm

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe

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
2484	System.exe
2108	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-1-5-21-3442511616-637977696-3186306149-1000\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
1288	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4988	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe
Token: SeDebugPrivilege	2484	System.exe
Token: SeDebugPrivilege	2108	System.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4988 wrote to memory of 1288	4988	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe	92
PID 4988 wrote to memory of 1288	4988	4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7.exe	92

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⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4988
- 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:1288

C:\Users\Admin\AppData\Roaming\System.exe
C:\Users\Admin\AppData\Roaming\System.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2484

C:\Users\Admin\AppData\Roaming\System.exe
C:\Users\Admin\AppData\Roaming\System.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2108

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\System.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
35KB

MD5
144f398d59c44e3c5a5ed28b8ba1918a

SHA1
9adc52e3f04aa4f92cb288a02968526806b23ac8

SHA256
4027dbb9777d42ebd7737bd906747b091139debe7f2f11b094ed1c13758971e7

SHA512
8f883b6235a956200396553a6338d9619fed8811d93993578b38175df050502840199894065d5b6df770b364a99ce6139dbe9c938aa91bc69470eea57b26fa00

Download Submit
memory/2484-12-0x00007FFFFDBF0000-0x00007FFFFE6B1000-memory.dmp

Filesize
10.8MB

Download
memory/2484-14-0x00007FFFFDBF0000-0x00007FFFFE6B1000-memory.dmp

Filesize
10.8MB

Download
memory/4988-0-0x00007FFFFDBF3000-0x00007FFFFDBF5000-memory.dmp

Filesize
8KB

Download
memory/4988-1-0x0000000000550000-0x0000000000560000-memory.dmp

Filesize
64KB

Download
memory/4988-6-0x00007FFFFDBF0000-0x00007FFFFE6B1000-memory.dmp

Filesize
10.8MB

Download
memory/4988-7-0x00007FFFFDBF3000-0x00007FFFFDBF5000-memory.dmp

Filesize
8KB

Download
memory/4988-8-0x00007FFFFDBF0000-0x00007FFFFE6B1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads