xworm | b60366dfa799f86b4f07d136d0b7779176fb057e04262435c3ef83478987d451

Analysis

max time kernel
152s
max time network
278s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
19-07-2024 14:29

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General

Target

Steam.exe
Size

300KB
MD5

0dbaccc9c83071046e7a7b1c5abc0610
SHA1

62dde7edace3b8dabc2181f8db9012e42c74724c
SHA256

b60366dfa799f86b4f07d136d0b7779176fb057e04262435c3ef83478987d451
SHA512

ab454858c86a5dbbd95c951b94c66f21e17dcf16f99d0a9bc1c1447485d42119e1759f5412697a4a61143beab274809b77749c4524c54162bc7e0f46ef220f7e
SSDEEP

3072:G+BKtFU9CHOjQAZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ+ZZZZZZZZZZZZZZ8:GtU98+GIIIIIIIhIIIIIIIIIIIIIIIU

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

decision-published.gl.at.ply.gg:3901

Mutex

Fbub7FdLoEHtTFgW

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2364-1-0x0000000000BD0000-0x0000000000C22000-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\Windows defender backup.lnk	Steam.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows defender backup.lnk	Steam.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.

flow	ioc
5	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3488	timeout.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	Steam.exe
Token: SeDebugPrivilege	2364	Steam.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 3608	2364	Steam.exe	86
PID 2364 wrote to memory of 3608	2364	Steam.exe	86
PID 3608 wrote to memory of 3488	3608	cmd.exe	88
PID 3608 wrote to memory of 3488	3608	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\Steam.exe
"C:\Users\Admin\AppData\Local\Temp\Steam.exe"
1⤵
- Drops startup file
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp295D.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3608
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp295D.tmp.bat

Filesize
157B

MD5
9195b2315f6be3aef281751a4f685c5b

SHA1
1ec86b2b26d9a2a6f0e0bdf2acbc737a3bf60d89

SHA256
f343ff3d511d3cf76fddbd11859b24ee8b96317be40b9101480170cc807b237e

SHA512
4ca5eee28139ad33e662847e99c63fa6cc3cf0bc07dcf0c528c34395e6894f3d8f9ecab7a4a574be8bc819408a5e629a934d131b0b8225a7b7e3acbbaed53858

Download Submit
memory/2364-0-0x00007FFCBCFF3000-0x00007FFCBCFF5000-memory.dmp

Filesize
8KB

Download
memory/2364-1-0x0000000000BD0000-0x0000000000C22000-memory.dmp

Filesize
328KB

Download
memory/2364-2-0x00007FFCBCFF0000-0x00007FFCBDAB2000-memory.dmp

Filesize
10.8MB

Download
memory/2364-6-0x000000001BB60000-0x000000001BB6C000-memory.dmp

Filesize
48KB

Download
memory/2364-7-0x00007FFCBCFF0000-0x00007FFCBDAB2000-memory.dmp

Filesize
10.8MB

Download
memory/2364-15-0x00007FFCBCFF0000-0x00007FFCBDAB2000-memory.dmp

Filesize
10.8MB

Download