xworm | cd7b2b4e605b3d56f3c5a09df11430caf2d659d7dbe14001fd6023fd223e3414

General

Target

XWorm_v5.2.exe
Size

62KB
MD5

3a5d9295a7d1dad3418d52899f4c90ea
SHA1

6448c5f880e2fac4a115324b9d8908f9adeaa22b
SHA256

cd7b2b4e605b3d56f3c5a09df11430caf2d659d7dbe14001fd6023fd223e3414
SHA512

125b06b3aca1a7f670338e18893fcb6cd97669c1dda2479111f6072fcc9ba80df03b4857fc7d30f23893383e2dbfd22b1ef28a86e5286da230286bb9aea73f59
SSDEEP

1536:ot5kWNzCRWhSv0RLd1eH86rerkb1WJX4/Ox+0lXSu:g5LzCRWbhocNrkb1T/Ox+0lXSu

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:7000

Attributes

Install_directory
%Temp%
install_file
XWorm_v5.2.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/3852-0-0x0000000000D60000-0x0000000000D76000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	XWorm_v5.2.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XWorm_v5.2.lnk	XWorm_v5.2.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XWorm_v5.2.lnk	XWorm_v5.2.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-1-5-21-910440534-423636034-2318342392-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XWorm_v5.2 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\XWorm_v5.2.exe"	XWorm_v5.2.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/Job

T1053

pid	Process
2000	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3852	XWorm_v5.2.exe
Token: SeDebugPrivilege	3852	XWorm_v5.2.exe
Token: SeDebugPrivilege	2660	XWorm_v5.2.exe
Token: SeDebugPrivilege	1396	XWorm_v5.2.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 2000	3852	XWorm_v5.2.exe	88
PID 3852 wrote to memory of 2000	3852	XWorm_v5.2.exe	88

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_v5.2.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm_v5.2.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XWorm_v5.2" /tr "C:\Users\Admin\AppData\Local\Temp\XWorm_v5.2.exe"
  2⤵
  - Creates scheduled task(s)
  PID:2000

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4408

C:\Users\Admin\AppData\Local\Temp\XWorm_v5.2.exe
C:\Users\Admin\AppData\Local\Temp\XWorm_v5.2.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2660

C:\Users\Admin\AppData\Local\Temp\XWorm_v5.2.exe
C:\Users\Admin\AppData\Local\Temp\XWorm_v5.2.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

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\XWorm_v5.2.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
memory/1396-11-0x00007FF962DC0000-0x00007FF963881000-memory.dmp

Filesize
10.8MB

Download
memory/1396-12-0x00007FF962DC0000-0x00007FF963881000-memory.dmp

Filesize
10.8MB

Download
memory/2660-6-0x00007FF962DC0000-0x00007FF963881000-memory.dmp

Filesize
10.8MB

Download
memory/2660-8-0x00007FF962DC0000-0x00007FF963881000-memory.dmp

Filesize
10.8MB

Download
memory/3852-0-0x0000000000D60000-0x0000000000D76000-memory.dmp

Filesize
88KB

Download
memory/3852-1-0x00007FF962DC0000-0x00007FF963881000-memory.dmp

Filesize
10.8MB

Download
memory/3852-3-0x000000001B8C0000-0x000000001B8D0000-memory.dmp

Filesize
64KB

Download
memory/3852-4-0x00007FF962DC0000-0x00007FF963881000-memory.dmp

Filesize
10.8MB

Download
memory/3852-5-0x000000001B8C0000-0x000000001B8D0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads