xworm | 28a9ed9884a7f52e49a8026b03b757422a7e3d3a594e6cb7a13946191650b78a

Analysis

max time kernel
125s
max time network
134s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-04-2024 05:33

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General

Target

tjFUD.exe
Size

40KB
MD5

9126c26063b71116148ea1f40db8c941
SHA1

300cdd5589e1ce8642a328f5e80f4246e9d0b062
SHA256

28a9ed9884a7f52e49a8026b03b757422a7e3d3a594e6cb7a13946191650b78a
SHA512

afff315fdd006cbf2589845700f2433b57c6062497b4f1b59d4096bafe3acee6fca81e4a15f05443dd03f39362eabd0c03312dec6e0dc56d22cb7f9f65071a8f
SSDEEP

768:kKpxOlNtidwAmJRXFuO5tF5PT95lvOMh23Ep:k/MWAmJ1FuOLFx95ZOMoW

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

127.0.0.1:12547

147.185.221.19:12547

bay-currencies.gl.at.ply.gg:12547

and-organized.gl.at.ply.gg:12547

Mutex

T8blWdnjot1TC8dy

Attributes

Install_directory
%AppData%
install_file
runbroker.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource yara_rule

behavioral1/memory/2212-0-0x0000000000310000-0x0000000000320000-memory.dmp family_xworm
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

resource	yara_rule
behavioral1/memory/2212-0-0x0000000000310000-0x0000000000320000-memory.dmp	family_xworm

Drops startup file 2 IoCs

Processes:

tjFUD.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

tjFUD.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\runbroker = "C:\\Users\\Admin\\AppData\\Roaming\\runbroker.exe"	tjFUD.exe

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

4 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

tjFUD.exe

pid process

2212 tjFUD.exe
2212 tjFUD.exe
2212 tjFUD.exe
2212 tjFUD.exe
2212 tjFUD.exe
2212 tjFUD.exe
2212 tjFUD.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tjFUD.exe

description pid process

Token: SeDebugPrivilege 2212 tjFUD.exe
Token: SeDebugPrivilege 2212 tjFUD.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

tjFUD.exe

pid process

2212 tjFUD.exe

flow	ioc
4	ip-api.com

pid	process
2212	tjFUD.exe
2212	tjFUD.exe
2212	tjFUD.exe
2212	tjFUD.exe
2212	tjFUD.exe
2212	tjFUD.exe
2212	tjFUD.exe

description	pid	process
Token: SeDebugPrivilege	2212	tjFUD.exe
Token: SeDebugPrivilege	2212	tjFUD.exe

pid	process
2212	tjFUD.exe

C:\Users\Admin\AppData\Local\Temp\tjFUD.exe
"C:\Users\Admin\AppData\Local\Temp\tjFUD.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2212

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

memory/2212-0-0x0000000000310000-0x0000000000320000-memory.dmp

Filesize
64KB

Download
memory/2212-1-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-2-0x000000001B370000-0x000000001B3F0000-memory.dmp

Filesize
512KB

Download
memory/2212-7-0x000007FEF5A30000-0x000007FEF641C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-8-0x000000001B370000-0x000000001B3F0000-memory.dmp

Filesize
512KB

Download