xworm | 66e6b3c3ccddd378cd588b2b99fe06cf4a1b9ab329eefd86f8fe540770432de3

General

Target

CYN_VIRUS_DISCORD_NUKER.exe
Size

63KB
MD5

aa99b75aaf8a18993f55701007b48a35
SHA1

d0d68462f15a38cd1a63e5bd7dd035e560cf3e61
SHA256

66e6b3c3ccddd378cd588b2b99fe06cf4a1b9ab329eefd86f8fe540770432de3
SHA512

f75ddc23776a0e5b13109c47c27a1e63dc5b6245977f0c84d5572c55134f4450841371bd1d0322a9b81dc7ef528ce462ddb27e5891ebb9dd9335595dd7c291ba
SSDEEP

1536:iXpNx7J5s0vmpn1rZ6v19P9bvmV8aEXxrb5WxlOYcR9:iXpr7Jmemyt19beV8nOfOY29

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

147.185.221.23:33942

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4828-1-0x0000000000600000-0x0000000000616000-memory.dmp	family_xworm
behavioral1/files/0x000200000001e77c-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	CYN_VIRUS_DISCORD_NUKER.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
1176	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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	CYN_VIRUS_DISCORD_NUKER.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
2964	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4828	CYN_VIRUS_DISCORD_NUKER.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4828	CYN_VIRUS_DISCORD_NUKER.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4828	CYN_VIRUS_DISCORD_NUKER.exe
Token: SeDebugPrivilege	4828	CYN_VIRUS_DISCORD_NUKER.exe
Token: SeDebugPrivilege	1176	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4828	CYN_VIRUS_DISCORD_NUKER.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4828 wrote to memory of 2964	4828	CYN_VIRUS_DISCORD_NUKER.exe	90
PID 4828 wrote to memory of 2964	4828	CYN_VIRUS_DISCORD_NUKER.exe	90

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\CYN_VIRUS_DISCORD_NUKER.exe
"C:\Users\Admin\AppData\Local\Temp\CYN_VIRUS_DISCORD_NUKER.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4828
- 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:2964

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1176

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\Roaming\XClient.exe

Filesize
63KB

MD5
aa99b75aaf8a18993f55701007b48a35

SHA1
d0d68462f15a38cd1a63e5bd7dd035e560cf3e61

SHA256
66e6b3c3ccddd378cd588b2b99fe06cf4a1b9ab329eefd86f8fe540770432de3

SHA512
f75ddc23776a0e5b13109c47c27a1e63dc5b6245977f0c84d5572c55134f4450841371bd1d0322a9b81dc7ef528ce462ddb27e5891ebb9dd9335595dd7c291ba

Download Submit
memory/1176-10-0x00007FFA96DC0000-0x00007FFA97881000-memory.dmp

Filesize
10.8MB

Download
memory/4828-0-0x00007FFA96DC3000-0x00007FFA96DC5000-memory.dmp

Filesize
8KB

Download
memory/4828-1-0x0000000000600000-0x0000000000616000-memory.dmp

Filesize
88KB

Download
memory/4828-6-0x00007FFA96DC0000-0x00007FFA97881000-memory.dmp

Filesize
10.8MB

Download
memory/4828-7-0x00007FFA96DC3000-0x00007FFA96DC5000-memory.dmp

Filesize
8KB

Download
memory/4828-11-0x00007FFA96DC0000-0x00007FFA97881000-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