xworm | a8b7a1b11e3590c2d4363e3ecec57a3d7ad4be0992193a039bb105b5fe9b6500

General

Target

file.exe
Size

78KB
MD5

c6aba0d34122d527c292e82279ad34c6
SHA1

5c0840af784d6af1f474f66dd22adf9c1abd9f07
SHA256

a8b7a1b11e3590c2d4363e3ecec57a3d7ad4be0992193a039bb105b5fe9b6500
SHA512

cec9ff6ba671779d92e32428ba84bac4e068c99274d45c02ec94fc260575ceacb078820e516e247754bb3637b1d6ed78e8a624ea3969aa370b65a1965e1cd5a6
SSDEEP

1536:lAc2OsgQW/wGJQB/4hbatuV1gD7boqMN61PQu4IgkOk8K/RABoJTGsqZ2eY7hBlZ:lrW4wGJIQco4D7bodXlIgxVK/sQqPYdR

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

soon-lp.at.ply.gg:17209

Mutex

G7BSoodIKNHsk7C8

Attributes

install_file
USB.exe

aes.plain

Signatures

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

file.exemyFile.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	file.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	myFile.exe

Drops startup file 2 IoCs

Processes:

myFile.exe

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

Executes dropped EXE 3 IoCs

Processes:

myFile.exemyFile.exemyFile.exe

pid process

4296 myFile.exe
620 myFile.exe
2304 myFile.exe

pid	process
4296	myFile.exe
620	myFile.exe
2304	myFile.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

myFile.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\myFile = "C:\\Users\\Admin\\AppData\\Roaming\\myFile.exe"	myFile.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

6 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

4516 schtasks.exe

flow	ioc
6	ip-api.com

pid	process
4516	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

myFile.exemyFile.exemyFile.exe

description	pid	process
Token: SeDebugPrivilege	4296	myFile.exe
Token: SeDebugPrivilege	4296	myFile.exe
Token: SeDebugPrivilege	620	myFile.exe
Token: SeDebugPrivilege	2304	myFile.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

file.exemyFile.exe

description	pid	process	target process
PID 1168 wrote to memory of 4296	1168	file.exe	myFile.exe
PID 1168 wrote to memory of 4296	1168	file.exe	myFile.exe
PID 4296 wrote to memory of 4516	4296	myFile.exe	schtasks.exe
PID 4296 wrote to memory of 4516	4296	myFile.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

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1168

C:\Users\Admin\AppData\Local\Temp\myFile.exe
"C:\Users\Admin\AppData\Local\Temp\myFile.exe"
2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4296

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "myFile" /tr "C:\Users\Admin\AppData\Roaming\myFile.exe"
3⤵
- Creates scheduled task(s)
PID:4516

C:\Users\Admin\AppData\Roaming\myFile.exe
C:\Users\Admin\AppData\Roaming\myFile.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:620

C:\Users\Admin\AppData\Roaming\myFile.exe
C:\Users\Admin\AppData\Roaming\myFile.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2304

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\myFile.exe.log
Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Temp\myFile.exe
Filesize
39KB

MD5
d8eea36339d0a086726466a84da3f0af

SHA1
9142f5dea09185b825dd1f49fedd4c1b2f9fb7ad

SHA256
66fef291c5314a7a20d2d8535ca351bcdd47bafb41136c8855f5ed460be856e1

SHA512
124690ddd7d8269d4d85bafb1249fa720230a44f4c3db49ebd3589e0ba2e109400ad344e31ecda6d2cefb38ef17be137b3e7b7ad617f1e762f4d41c2541bfb8b

Download Submit
C:\Users\Admin\AppData\Local\Temp\myFile.exe
Filesize
39KB

MD5
d8eea36339d0a086726466a84da3f0af

SHA1
9142f5dea09185b825dd1f49fedd4c1b2f9fb7ad

SHA256
66fef291c5314a7a20d2d8535ca351bcdd47bafb41136c8855f5ed460be856e1

SHA512
124690ddd7d8269d4d85bafb1249fa720230a44f4c3db49ebd3589e0ba2e109400ad344e31ecda6d2cefb38ef17be137b3e7b7ad617f1e762f4d41c2541bfb8b

Download Submit
C:\Users\Admin\AppData\Local\Temp\myFile.exe
Filesize
39KB

MD5
d8eea36339d0a086726466a84da3f0af

SHA1
9142f5dea09185b825dd1f49fedd4c1b2f9fb7ad

SHA256
66fef291c5314a7a20d2d8535ca351bcdd47bafb41136c8855f5ed460be856e1

SHA512
124690ddd7d8269d4d85bafb1249fa720230a44f4c3db49ebd3589e0ba2e109400ad344e31ecda6d2cefb38ef17be137b3e7b7ad617f1e762f4d41c2541bfb8b

Download Submit
C:\Users\Admin\AppData\Roaming\myFile.exe
Filesize
39KB

MD5
d8eea36339d0a086726466a84da3f0af

SHA1
9142f5dea09185b825dd1f49fedd4c1b2f9fb7ad

SHA256
66fef291c5314a7a20d2d8535ca351bcdd47bafb41136c8855f5ed460be856e1

SHA512
124690ddd7d8269d4d85bafb1249fa720230a44f4c3db49ebd3589e0ba2e109400ad344e31ecda6d2cefb38ef17be137b3e7b7ad617f1e762f4d41c2541bfb8b

Download Submit
C:\Users\Admin\AppData\Roaming\myFile.exe
Filesize
39KB

MD5
d8eea36339d0a086726466a84da3f0af

SHA1
9142f5dea09185b825dd1f49fedd4c1b2f9fb7ad

SHA256
66fef291c5314a7a20d2d8535ca351bcdd47bafb41136c8855f5ed460be856e1

SHA512
124690ddd7d8269d4d85bafb1249fa720230a44f4c3db49ebd3589e0ba2e109400ad344e31ecda6d2cefb38ef17be137b3e7b7ad617f1e762f4d41c2541bfb8b

Download Submit
C:\Users\Admin\AppData\Roaming\myFile.exe
Filesize
39KB

MD5
d8eea36339d0a086726466a84da3f0af

SHA1
9142f5dea09185b825dd1f49fedd4c1b2f9fb7ad

SHA256
66fef291c5314a7a20d2d8535ca351bcdd47bafb41136c8855f5ed460be856e1

SHA512
124690ddd7d8269d4d85bafb1249fa720230a44f4c3db49ebd3589e0ba2e109400ad344e31ecda6d2cefb38ef17be137b3e7b7ad617f1e762f4d41c2541bfb8b

Download Submit
memory/1168-133-0x0000000000EA0000-0x0000000000EA8000-memory.dmp

Filesize
32KB

Download
memory/1168-142-0x00000000058C0000-0x00000000058D0000-memory.dmp

Filesize
64KB

Download
memory/4296-147-0x00000000002C0000-0x00000000002D0000-memory.dmp

Filesize
64KB

Download
memory/4296-148-0x00000000022F0000-0x0000000002300000-memory.dmp

Filesize
64KB

Download
memory/4296-157-0x00000000022F0000-0x0000000002300000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads