xworm | 89c13d0d555824acb2e24f61d92fc6fb3dce46d6af5d1df86e683eb9c24eb3f0

General

Target
XWorm_DNS.exe
Size 32KB
Sample230708-vcs6dsfg92
SHA256 89c13d0d555824acb2e24f61d92fc6fb3dce46d6af5d1df86e683eb9c24eb3f0
MD5 40a3ded02fdca319adfb4cb131c67e55
SHA1 a0546dcea43a56ee56e30c7acbd3accb75b3fbae
SHA512 26baa8fb10bdf1b96e14bcc97a23805b481f28b47fb731d2a1c71ff13bf23aa2687ef6d21b1d415cb2c287e21b2125b6800ad3202c9bd4ef2dc341ca85f4749e
SSDEEP 768:sdSt0lwAfTQotNDflzs0cGZFh9AvrjO/h0/h+7:sQt0lwcts0cmFh9AjjO/Oc7
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

caloi1920.ddns.net:4444

Mutex

HzYMmjPQMTRUayN2

Attributes

install_file
USB.exe

aes.plain

Signatures

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

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2180	XWorm_DNS.exe
2664	XWorm_DNS.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2859459355-424593036-1984306042-1000\Software\Microsoft\Windows\CurrentVersion\Run\XWorm_DNS = "C:\\Users\\Admin\\XWorm_DNS.exe"	XWorm_DNS.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1504	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3060	XWorm_DNS.exe
Token: SeDebugPrivilege	2180	XWorm_DNS.exe
Token: SeDebugPrivilege	2664	XWorm_DNS.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 1504	3060	XWorm_DNS.exe	28
PID 3060 wrote to memory of 1504	3060	XWorm_DNS.exe	28
PID 3060 wrote to memory of 1504	3060	XWorm_DNS.exe	28
PID 1216 wrote to memory of 2180	1216	taskeng.exe	32
PID 1216 wrote to memory of 2180	1216	taskeng.exe	32
PID 1216 wrote to memory of 2180	1216	taskeng.exe	32
PID 1216 wrote to memory of 2664	1216	taskeng.exe	33
PID 1216 wrote to memory of 2664	1216	taskeng.exe	33
PID 1216 wrote to memory of 2664	1216	taskeng.exe	33

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\XWorm_DNS.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm_DNS.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XWorm_DNS" /tr "C:\Users\Admin\XWorm_DNS.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1504

C:\Windows\system32\taskeng.exe
taskeng.exe {9682B2EE-0EE3-4306-96A8-F0804A22F927} S-1-5-21-2859459355-424593036-1984306042-1000:UNZPQQXM\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Users\Admin\XWorm_DNS.exe
  C:\Users\Admin\XWorm_DNS.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2180
- C:\Users\Admin\XWorm_DNS.exe
  C:\Users\Admin\XWorm_DNS.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

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

XWorm_DNS.exe

Path C:\Users\Admin\XWorm_DNS.exe
Size 32KB
SHA256 89c13d0d555824acb2e24f61d92fc6fb3dce46d6af5d1df86e683eb9c24eb3f0
MD5 40a3ded02fdca319adfb4cb131c67e55
SHA1 a0546dcea43a56ee56e30c7acbd3accb75b3fbae
SHA512 26baa8fb10bdf1b96e14bcc97a23805b481f28b47fb731d2a1c71ff13bf23aa2687ef6d21b1d415cb2c287e21b2125b6800ad3202c9bd4ef2dc341ca85f4749e
SSDEEP 768:sdSt0lwAfTQotNDflzs0cGZFh9AvrjO/h0/h+7:sQt0lwcts0cmFh9AjjO/Oc7
MD5 SHA1 SHA512 SSDEEP

Submit Download

XWorm_DNS.exe

Path C:\Users\Admin\XWorm_DNS.exe
Size 32KB
SHA256 89c13d0d555824acb2e24f61d92fc6fb3dce46d6af5d1df86e683eb9c24eb3f0
MD5 40a3ded02fdca319adfb4cb131c67e55
SHA1 a0546dcea43a56ee56e30c7acbd3accb75b3fbae
SHA512 26baa8fb10bdf1b96e14bcc97a23805b481f28b47fb731d2a1c71ff13bf23aa2687ef6d21b1d415cb2c287e21b2125b6800ad3202c9bd4ef2dc341ca85f4749e
SSDEEP 768:sdSt0lwAfTQotNDflzs0cGZFh9AvrjO/h0/h+7:sQt0lwcts0cmFh9AjjO/Oc7
MD5 SHA1 SHA512 SSDEEP

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XWorm_DNS.exe

Path C:\Users\Admin\XWorm_DNS.exe
Size 32KB
SHA256 89c13d0d555824acb2e24f61d92fc6fb3dce46d6af5d1df86e683eb9c24eb3f0
MD5 40a3ded02fdca319adfb4cb131c67e55
SHA1 a0546dcea43a56ee56e30c7acbd3accb75b3fbae
SHA512 26baa8fb10bdf1b96e14bcc97a23805b481f28b47fb731d2a1c71ff13bf23aa2687ef6d21b1d415cb2c287e21b2125b6800ad3202c9bd4ef2dc341ca85f4749e
SSDEEP 768:sdSt0lwAfTQotNDflzs0cGZFh9AvrjO/h0/h+7:sQt0lwcts0cmFh9AjjO/Oc7
MD5 SHA1 SHA512 SSDEEP

Submit Download

XWorm_DNS.exe

Path C:\Users\Admin\XWorm_DNS.exe
Size 32KB
SHA256 89c13d0d555824acb2e24f61d92fc6fb3dce46d6af5d1df86e683eb9c24eb3f0
MD5 40a3ded02fdca319adfb4cb131c67e55
SHA1 a0546dcea43a56ee56e30c7acbd3accb75b3fbae
SHA512 26baa8fb10bdf1b96e14bcc97a23805b481f28b47fb731d2a1c71ff13bf23aa2687ef6d21b1d415cb2c287e21b2125b6800ad3202c9bd4ef2dc341ca85f4749e
SSDEEP 768:sdSt0lwAfTQotNDflzs0cGZFh9AvrjO/h0/h+7:sQt0lwcts0cmFh9AjjO/Oc7
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2180-68-0x0000000000950000-0x000000000095E000-memory.dmp

Download

memory/3060-54-0x0000000000060000-0x000000000006E000-memory.dmp

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memory/3060-63-0x000000001B270000-0x000000001B2F0000-memory.dmp

Download

memory/3060-64-0x000000001B270000-0x000000001B2F0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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