xworm | 1073ff4689cb536805d2881988b72853b029040f446af5ced18d1bc08b2266e1

Analysis

max time kernel
40s
max time network
52s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29-06-2024 18:23

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General

Target

a.exe
Size

239KB
MD5

f6bb396fd836f66cd9f33ca4b0262dd7
SHA1

bfc7036e32a59ac25db505d263b5f4cade24c53c
SHA256

1073ff4689cb536805d2881988b72853b029040f446af5ced18d1bc08b2266e1
SHA512

9b1668fa849054964470f8160835480d7618dd28845827b7ab1334935f8c657a4fe2ce07ed42593d558b3ac0bb3412bf9c188477008e189f6cdaae71255c28c2
SSDEEP

3072:PDOTa8CC9ooblQ7zDoxB4OlBW3q8SKfbzxcwg7es6/Vsb8VKTu549oJMfF/H9N3Y:bfIbSc83qUhcX7elbKTua9bfF/H9d9n

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.1

6.tcp.eu.ngrok.io:13394

Attributes

Install_directory
%Public%
install_file
USB.exe
telegram
https://api.telegram.org/bot6674821695:AAExQsr6_hmXk6hz7CN4kMSi9cs9y86daYM/sendMessage?chat_id=5865520781

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource yara_rule

behavioral2/memory/3288-1-0x0000000000720000-0x0000000000760000-memory.dmp family_xworm
C:\Users\Public\a.exe family_xworm
Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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

Processes:

a.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation a.exe

resource	yara_rule
behavioral2/memory/3288-1-0x0000000000720000-0x0000000000760000-memory.dmp	family_xworm
C:\Users\Public\a.exe	family_xworm

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	a.exe

Drops startup file 2 IoCs

Processes:

a.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a.lnk	a.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a.lnk	a.exe

Adds Run key to start application 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Processes:

a.exe

description ioc process

Set value (str) \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a = "C:\\Users\\Public\\a.exe" a.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs

Web Service
T1102

Processes:

flow ioc

12 6.tcp.eu.ngrok.io
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

3 ip-api.com
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

Processes:

schtasks.exe

pid process

320 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

a.exe

pid process

3288 a.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

a.exe

description pid process

Token: SeDebugPrivilege 3288 a.exe
Token: SeDebugPrivilege 3288 a.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

a.exe

pid process

3288 a.exe
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

a.exe

description pid process target process

PID 3288 wrote to memory of 320 3288 a.exe schtasks.exe
PID 3288 wrote to memory of 320 3288 a.exe schtasks.exe
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

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a = "C:\\Users\\Public\\a.exe"	a.exe

flow	ioc
12	6.tcp.eu.ngrok.io

flow	ioc
3	ip-api.com

pid	process
320	schtasks.exe

pid	process
3288	a.exe

description	pid	process
Token: SeDebugPrivilege	3288	a.exe
Token: SeDebugPrivilege	3288	a.exe

pid	process
3288	a.exe

description	pid	process	target process
PID 3288 wrote to memory of 320	3288	a.exe	schtasks.exe
PID 3288 wrote to memory of 320	3288	a.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\a.exe
"C:\Users\Admin\AppData\Local\Temp\a.exe"
1⤵
- Checks computer location settings
- 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:3288

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "a" /tr "C:\Users\Public\a.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:320

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Public\a.exe
Filesize
239KB

MD5
f6bb396fd836f66cd9f33ca4b0262dd7

SHA1
bfc7036e32a59ac25db505d263b5f4cade24c53c

SHA256
1073ff4689cb536805d2881988b72853b029040f446af5ced18d1bc08b2266e1

SHA512
9b1668fa849054964470f8160835480d7618dd28845827b7ab1334935f8c657a4fe2ce07ed42593d558b3ac0bb3412bf9c188477008e189f6cdaae71255c28c2

Download Submit
memory/3288-0-0x00007FF9F8C03000-0x00007FF9F8C05000-memory.dmp

Filesize
8KB

Download
memory/3288-1-0x0000000000720000-0x0000000000760000-memory.dmp

Filesize
256KB

Download
memory/3288-2-0x00007FF9F8C00000-0x00007FF9F96C1000-memory.dmp

Filesize
10.8MB

Download
memory/3288-11-0x00007FF9F8C00000-0x00007FF9F96C1000-memory.dmp

Filesize
10.8MB

Download