xworm | 1eca23db92c0319d414040c2ff9a240d57f806290e1f0238d696fea761c5d948

Resubmissions

07-08-2024 21:46

240807-1m3qgayapb 10

07-08-2024 21:41

240807-1jzveavbnj 10

Analysis

max time kernel
13s
max time network
0s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
07-08-2024 21:41

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General

Target

Cleaner.exe
Size

172KB
MD5

9229077d00bad648e91aaf30bd096567
SHA1

83eba361175f6c5dd71f740d527ab853a504d15b
SHA256

1eca23db92c0319d414040c2ff9a240d57f806290e1f0238d696fea761c5d948
SHA512

a8d6ac08eb8a2d74791238bfd73cda0062ac4a706bba6a61472efd4a062e2e611661a931d0d14a7edd52a833be830c254dbc14b184ae30a013687d547bc105a7
SSDEEP

3072:IuAN13vRxKBL+b0kb1zehFjO/G16Bz65/M6If+3Js+3JFkKeTnZ:KRYib0y1ihf16xBt25

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:1990

Attributes

Install_directory
%AppData%
install_file
cleaner.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2264-1-0x00000000009D0000-0x0000000000A02000-memory.dmp	family_xworm
behavioral1/files/0x000c00000001226d-8.dat	family_xworm
behavioral1/memory/2820-10-0x0000000000110000-0x0000000000142000-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\cleaner.lnk	Cleaner.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cleaner.lnk	Cleaner.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	cleaner.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\cleaner = "C:\\Users\\Admin\\AppData\\Roaming\\cleaner.exe"	Cleaner.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
1908	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2264	Cleaner.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2264	Cleaner.exe
Token: SeDebugPrivilege	2264	Cleaner.exe
Token: SeDebugPrivilege	2820	cleaner.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2264	Cleaner.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 1908	2264	Cleaner.exe	30
PID 2264 wrote to memory of 1908	2264	Cleaner.exe	30
PID 2264 wrote to memory of 1908	2264	Cleaner.exe	30
PID 2744 wrote to memory of 2820	2744	taskeng.exe	34
PID 2744 wrote to memory of 2820	2744	taskeng.exe	34
PID 2744 wrote to memory of 2820	2744	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\Cleaner.exe
"C:\Users\Admin\AppData\Local\Temp\Cleaner.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:2264
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "cleaner" /tr "C:\Users\Admin\AppData\Roaming\cleaner.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1908

C:\Windows\system32\taskeng.exe
taskeng.exe {3E173A28-74BF-4605-BCF9-6A17AD764469} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Users\Admin\AppData\Roaming\cleaner.exe
  C:\Users\Admin\AppData\Roaming\cleaner.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
172KB

MD5
9229077d00bad648e91aaf30bd096567

SHA1
83eba361175f6c5dd71f740d527ab853a504d15b

SHA256
1eca23db92c0319d414040c2ff9a240d57f806290e1f0238d696fea761c5d948

SHA512
a8d6ac08eb8a2d74791238bfd73cda0062ac4a706bba6a61472efd4a062e2e611661a931d0d14a7edd52a833be830c254dbc14b184ae30a013687d547bc105a7

Download Submit
memory/2264-0-0x000007FEF50B3000-0x000007FEF50B4000-memory.dmp

Filesize
4KB

Download
memory/2264-1-0x00000000009D0000-0x0000000000A02000-memory.dmp

Filesize
200KB

Download
memory/2264-6-0x000007FEF50B0000-0x000007FEF5A9C000-memory.dmp

Filesize
9.9MB

Download
memory/2820-10-0x0000000000110000-0x0000000000142000-memory.dmp

Filesize
200KB

Download