xworm | 3cd08436001ab5df97f2a5c62b425caa8f77c9451f071cf4b091f9e8ec10fea6

General

Target

Client.exe
Size

42KB
MD5

2353c36993321a0ff1eefd4280f1fe6f
SHA1

752491fdc92b869b87b60ac5bb4d3ac89d23479c
SHA256

3cd08436001ab5df97f2a5c62b425caa8f77c9451f071cf4b091f9e8ec10fea6
SHA512

5f8d66238d9f4ca7a6dfe74704ad08f0e8a22919bdd1ce923f7181be77cbb0984e49d65d638ed343983999f600b4b010a789f7eeb1f0a243ae417c72e4490e37
SSDEEP

768:nlfCvZ8nTocsooq2R0jU4UuljElGCIg9N3YRzyEryIw:nwmfCELUQElag96RtZw

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

ohio-chris.gl.at.ply.gg:22258

Mutex

fpDBNBZE4TJiBhWW

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2532-1-0x00000000012D0000-0x00000000012E0000-memory.dmp	family_xworm
behavioral1/files/0x0008000000019234-9.dat	family_xworm
behavioral1/memory/2340-11-0x0000000001310000-0x0000000001320000-memory.dmp	family_xworm
behavioral1/memory/2680-13-0x0000000000250000-0x0000000000260000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2340	Client.exe
2680	Client.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\Client = "C:\\Users\\Admin\\AppData\\Roaming\\Client.exe"	Client.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
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

pid	Process
2768	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2532	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2768	2532	Client.exe	33
PID 2532 wrote to memory of 2768	2532	Client.exe	33
PID 2532 wrote to memory of 2768	2532	Client.exe	33
PID 1952 wrote to memory of 2340	1952	taskeng.exe	37
PID 1952 wrote to memory of 2340	1952	taskeng.exe	37
PID 1952 wrote to memory of 2340	1952	taskeng.exe	37
PID 1952 wrote to memory of 2680	1952	taskeng.exe	38
PID 1952 wrote to memory of 2680	1952	taskeng.exe	38
PID 1952 wrote to memory of 2680	1952	taskeng.exe	38

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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 1 /tn "Client" /tr "C:\Users\Admin\AppData\Roaming\Client.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2768

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2804

C:\Windows\system32\taskeng.exe
taskeng.exe {E004F910-411A-4B88-BF9A-1F7DC85833E5} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Users\Admin\AppData\Roaming\Client.exe
  C:\Users\Admin\AppData\Roaming\Client.exe
  2⤵
  - Executes dropped EXE
  PID:2340
- C:\Users\Admin\AppData\Roaming\Client.exe
  C:\Users\Admin\AppData\Roaming\Client.exe
  2⤵
  - Executes dropped EXE
  PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Client.exe

Filesize
42KB

MD5
2353c36993321a0ff1eefd4280f1fe6f

SHA1
752491fdc92b869b87b60ac5bb4d3ac89d23479c

SHA256
3cd08436001ab5df97f2a5c62b425caa8f77c9451f071cf4b091f9e8ec10fea6

SHA512
5f8d66238d9f4ca7a6dfe74704ad08f0e8a22919bdd1ce923f7181be77cbb0984e49d65d638ed343983999f600b4b010a789f7eeb1f0a243ae417c72e4490e37

Download Submit
memory/2340-11-0x0000000001310000-0x0000000001320000-memory.dmp

Filesize
64KB

Download
memory/2532-0-0x000007FEF59A3000-0x000007FEF59A4000-memory.dmp

Filesize
4KB

Download
memory/2532-1-0x00000000012D0000-0x00000000012E0000-memory.dmp

Filesize
64KB

Download
memory/2532-2-0x000007FEF59A0000-0x000007FEF638C000-memory.dmp

Filesize
9.9MB

Download
memory/2532-6-0x000007FEF59A3000-0x000007FEF59A4000-memory.dmp

Filesize
4KB

Download
memory/2532-7-0x000007FEF59A0000-0x000007FEF638C000-memory.dmp

Filesize
9.9MB

Download
memory/2680-13-0x0000000000250000-0x0000000000260000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads