xworm | b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 01:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
Size

108KB
MD5

557caa60b4c2b17a6ddd4da49d778b33
SHA1

f5f12131479f08e4305ab9b51ba415d72ccb28c1
SHA256

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f
SHA512

7e6113a678fe35109432e7767492f9cd91b7cdb042af2cc36d70973efaa7cf131270b16209a107ab3da158723d03791910977f53c7640c67fcf59bd37d2626d1
SSDEEP

1536:lIs9UNbZlC6wdGNKZpPNb3JWoDTUa6PvaiOAfViA6X:lIAoLpaG4pNb36bX1OAfkAw

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

193.161.193.99:51146

Attributes

Install_directory
%AppData%
install_file
USB.exe
telegram
https://api.telegram.org/bot6701075763:AAGkvv2CpqBxGihH8FtOkSA7Uxy35GZpAFI/sendMessage?chat_id=5991331733

Signatures

Detect Xworm Payload 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2212-1-0x0000000000DE0000-0x0000000000E00000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe	family_xworm
behavioral1/memory/2820-16-0x0000000001180000-0x00000000011A0000-memory.dmp	family_xworm

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

Detects Windows executables referencing non-Windows User-Agents 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2212-1-0x0000000000DE0000-0x0000000000E00000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/2820-16-0x0000000001180000-0x00000000011A0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects executables using Telegram Chat Bot 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2212-1-0x0000000000DE0000-0x0000000000E00000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe	INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
behavioral1/memory/2820-16-0x0000000001180000-0x00000000011A0000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_TelegramChatBot

Drops startup file 2 IoCs

Processes:

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.lnk	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.lnk	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

Executes dropped EXE 2 IoCs

Processes:

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exeb381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

pid process

2820 b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
1260 b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

pid	process
2820	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
1260	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f = "C:\\Users\\Admin\\AppData\\Roaming\\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe"	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.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
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

2852 schtasks.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

pid process

2212 b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

flow	ioc
4	ip-api.com

pid	process
2852	schtasks.exe

pid	process
2212	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exeb381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exeb381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

description	pid	process
Token: SeDebugPrivilege	2212	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
Token: SeDebugPrivilege	2212	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
Token: SeDebugPrivilege	2820	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
Token: SeDebugPrivilege	1260	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

pid process

2212 b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

pid	process
2212	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exetaskeng.exe

description	pid	process	target process
PID 2212 wrote to memory of 2852	2212	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe	schtasks.exe
PID 2212 wrote to memory of 2852	2212	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe	schtasks.exe
PID 2212 wrote to memory of 2852	2212	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe	schtasks.exe
PID 2792 wrote to memory of 2820	2792	taskeng.exe	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
PID 2792 wrote to memory of 2820	2792	taskeng.exe	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
PID 2792 wrote to memory of 2820	2792	taskeng.exe	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
PID 2792 wrote to memory of 1260	2792	taskeng.exe	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
PID 2792 wrote to memory of 1260	2792	taskeng.exe	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
PID 2792 wrote to memory of 1260	2792	taskeng.exe	b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.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

C:\Users\Admin\AppData\Local\Temp\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
"C:\Users\Admin\AppData\Local\Temp\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.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:2212

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f" /tr "C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2852

C:\Windows\system32\taskeng.exe
taskeng.exe {1FD5B7C7-EA65-4FA9-AE7D-5845FEE9FA29} S-1-5-21-1298544033-3225604241-2703760938-1000:IZKCKOTP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2792

C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2820

C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1260

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f.exe
Filesize
108KB

MD5
557caa60b4c2b17a6ddd4da49d778b33

SHA1
f5f12131479f08e4305ab9b51ba415d72ccb28c1

SHA256
b381f1f4bad4016f464ceb92aeb9dda3b696411d913ea7f3bbc774b67076c43f

SHA512
7e6113a678fe35109432e7767492f9cd91b7cdb042af2cc36d70973efaa7cf131270b16209a107ab3da158723d03791910977f53c7640c67fcf59bd37d2626d1

Download Submit
memory/2212-0-0x000007FEF56F3000-0x000007FEF56F4000-memory.dmp

Filesize
4KB

Download
memory/2212-1-0x0000000000DE0000-0x0000000000E00000-memory.dmp

Filesize
128KB

Download
memory/2212-2-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

Filesize
9.9MB

Download
memory/2212-11-0x000007FEF56F3000-0x000007FEF56F4000-memory.dmp

Filesize
4KB

Download
memory/2212-12-0x000007FEF56F0000-0x000007FEF60DC000-memory.dmp

Filesize
9.9MB

Download
memory/2820-16-0x0000000001180000-0x00000000011A0000-memory.dmp

Filesize
128KB

Download