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 2 IoCs

resource	yara_rule
behavioral2/memory/3744-1-0x0000000000860000-0x0000000000870000-memory.dmp	family_xworm
behavioral2/files/0x000c000000023bd6-8.dat	family_xworm

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

Checks computer location settings 2 TTPs 1 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-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	discordnukerv3.exe

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
1708	XClient.exe
4432	XClient.exe
4224	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-1-5-21-1170604239-850860757-3112005715-1000\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
2128	schtasks.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3744	discordnukerv3.exe
Token: SeDebugPrivilege	3744	discordnukerv3.exe
Token: SeDebugPrivilege	1708	XClient.exe
Token: SeDebugPrivilege	4432	XClient.exe
Token: SeDebugPrivilege	4224	XClient.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3744 wrote to memory of 2128	3744	discordnukerv3.exe	91
PID 3744 wrote to memory of 2128	3744	discordnukerv3.exe	91

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⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3744
- 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:2128

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1708

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4432

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4224

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

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\XClient.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
35KB

MD5
ec09727a0ebaf761bcaf7c5f3b799008

SHA1
d6aa602f2e7883d0fe79585ddf2093b1b513f05a

SHA256
b412ff0701b365206f9da406214e5dccf883f77a00b750658fad687e95a4e2a6

SHA512
01a113512eaa04af6f2493a24806054bb4050e1273e6fd2eacc86457df0b414e9bdd2f841b040c17cfa2c19244423a262b0a71220e1bb1861148eada44148cbc

Download Submit
memory/1708-10-0x00007FFD632E0000-0x00007FFD63DA1000-memory.dmp

Filesize
10.8MB

Download
memory/1708-12-0x00007FFD632E0000-0x00007FFD63DA1000-memory.dmp

Filesize
10.8MB

Download
memory/3744-0-0x00007FFD632E3000-0x00007FFD632E5000-memory.dmp

Filesize
8KB

Download
memory/3744-1-0x0000000000860000-0x0000000000870000-memory.dmp

Filesize
64KB

Download
memory/3744-6-0x00007FFD632E0000-0x00007FFD63DA1000-memory.dmp

Filesize
10.8MB

Download
memory/3744-7-0x00007FFD632E0000-0x00007FFD63DA1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads