xworm | b412ff0701b365206f9da406214e5dccf883f77a00b750658fad687e95a4e2a6

General

Target

discordnukerv3.exe
Size

35KB
MD5

ec09727a0ebaf761bcaf7c5f3b799008
SHA1

d6aa602f2e7883d0fe79585ddf2093b1b513f05a
SHA256

b412ff0701b365206f9da406214e5dccf883f77a00b750658fad687e95a4e2a6
SHA512

01a113512eaa04af6f2493a24806054bb4050e1273e6fd2eacc86457df0b414e9bdd2f841b040c17cfa2c19244423a262b0a71220e1bb1861148eada44148cbc
SSDEEP

768:mo7zWVFe5fzEky1TxVPemVFyw9brVO/h6yIL:X7zWVFe6Rq8Fr9b5O/oBL

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:38571

Mutex

0KgKOnJZ1WSTbd2d

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2660-1-0x0000000000140000-0x0000000000150000-memory.dmp	family_xworm
behavioral1/files/0x0007000000012117-10.dat	family_xworm
behavioral1/memory/2588-12-0x0000000000E70000-0x0000000000E80000-memory.dmp	family_xworm
behavioral1/memory/2364-16-0x00000000002D0000-0x00000000002E0000-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 created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	discordnukerv3.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	discordnukerv3.exe

Executes dropped EXE 3 IoCs

pid	Process
2588	XClient.exe
1324	XClient.exe
2364	XClient.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	discordnukerv3.exe

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
2804	schtasks.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	discordnukerv3.exe
Token: SeDebugPrivilege	2660	discordnukerv3.exe
Token: SeDebugPrivilege	2588	XClient.exe
Token: SeDebugPrivilege	1324	XClient.exe
Token: SeDebugPrivilege	2364	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2804	2660	discordnukerv3.exe	30
PID 2660 wrote to memory of 2804	2660	discordnukerv3.exe	30
PID 2660 wrote to memory of 2804	2660	discordnukerv3.exe	30
PID 2808 wrote to memory of 2588	2808	taskeng.exe	33
PID 2808 wrote to memory of 2588	2808	taskeng.exe	33
PID 2808 wrote to memory of 2588	2808	taskeng.exe	33
PID 2808 wrote to memory of 1324	2808	taskeng.exe	35
PID 2808 wrote to memory of 1324	2808	taskeng.exe	35
PID 2808 wrote to memory of 1324	2808	taskeng.exe	35
PID 2808 wrote to memory of 2364	2808	taskeng.exe	36
PID 2808 wrote to memory of 2364	2808	taskeng.exe	36
PID 2808 wrote to memory of 2364	2808	taskeng.exe	36

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\discordnukerv3.exe
"C:\Users\Admin\AppData\Local\Temp\discordnukerv3.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2804

C:\Windows\system32\taskeng.exe
taskeng.exe {1B6B1CB7-1DD8-455D-B39B-E499ECB7B60E} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2588
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1324
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2364

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\XClient.exe

Filesize
35KB

MD5
ec09727a0ebaf761bcaf7c5f3b799008

SHA1
d6aa602f2e7883d0fe79585ddf2093b1b513f05a

SHA256
b412ff0701b365206f9da406214e5dccf883f77a00b750658fad687e95a4e2a6

SHA512
01a113512eaa04af6f2493a24806054bb4050e1273e6fd2eacc86457df0b414e9bdd2f841b040c17cfa2c19244423a262b0a71220e1bb1861148eada44148cbc

Download Submit
memory/2364-16-0x00000000002D0000-0x00000000002E0000-memory.dmp

Filesize
64KB

Download
memory/2588-12-0x0000000000E70000-0x0000000000E80000-memory.dmp

Filesize
64KB

Download
memory/2660-0-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/2660-1-0x0000000000140000-0x0000000000150000-memory.dmp

Filesize
64KB

Download
memory/2660-6-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download
memory/2660-7-0x000007FEF5753000-0x000007FEF5754000-memory.dmp

Filesize
4KB

Download
memory/2660-8-0x000007FEF5750000-0x000007FEF613C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads