xworm | e0f8da5010a1162b1480daec57e3d2122a3f4fc7ab89797fb75536729f7fb7d7

General

Target

202409191600d925862ef753288750008ec0517chiddentear.exe
Size

140KB
MD5

1600d925862ef753288750008ec0517c
SHA1

19d690bb3bd6e9e2a4ae3704ed5eba5c6295996d
SHA256

e0f8da5010a1162b1480daec57e3d2122a3f4fc7ab89797fb75536729f7fb7d7
SHA512

4828feeb01daadd4f7f39a70814c6da727ca0f71a3e4a25b0ea9ddafc604d8ad2a1300c22490fc68ddd15eb325f99dba0e85a612e0ead4455af2f31116d218e7
SSDEEP

3072:/esDcUBEg9YKM+lmsolAIrRuw+mqv9j1MWLQd:/ZBEg9o+lDAA

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

week-media.gl.at.ply.gg:28685

Mutex

k1CSgYnNfhE66GJj

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1872-1-0x0000000000280000-0x00000000002A8000-memory.dmp	family_xworm
behavioral1/files/0x0008000000015cac-9.dat	family_xworm
behavioral1/memory/1844-11-0x00000000012F0000-0x0000000001318000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\202409191600d925862ef753288750008ec0517chiddentear.exe	202409191600d925862ef753288750008ec0517chiddentear.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\202409191600d925862ef753288750008ec0517chiddentear.exe	202409191600d925862ef753288750008ec0517chiddentear.exe

Executes dropped EXE 2 IoCs

pid	Process
1844	202409191600d925862ef753288750008ec0517chiddentear.exe
1256	202409191600d925862ef753288750008ec0517chiddentear.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\202409191600d925862ef753288750008ec0517chiddentear = "C:\\Users\\Admin\\AppData\\Roaming\\202409191600d925862ef753288750008ec0517chiddentear.exe"	202409191600d925862ef753288750008ec0517chiddentear.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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
2520	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1872	202409191600d925862ef753288750008ec0517chiddentear.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1872 wrote to memory of 2520	1872	202409191600d925862ef753288750008ec0517chiddentear.exe	29
PID 1872 wrote to memory of 2520	1872	202409191600d925862ef753288750008ec0517chiddentear.exe	29
PID 1872 wrote to memory of 2520	1872	202409191600d925862ef753288750008ec0517chiddentear.exe	29
PID 2868 wrote to memory of 1844	2868	taskeng.exe	34
PID 2868 wrote to memory of 1844	2868	taskeng.exe	34
PID 2868 wrote to memory of 1844	2868	taskeng.exe	34
PID 2868 wrote to memory of 1256	2868	taskeng.exe	35
PID 2868 wrote to memory of 1256	2868	taskeng.exe	35
PID 2868 wrote to memory of 1256	2868	taskeng.exe	35

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\202409191600d925862ef753288750008ec0517chiddentear.exe
"C:\Users\Admin\AppData\Local\Temp\202409191600d925862ef753288750008ec0517chiddentear.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 1 /tn "202409191600d925862ef753288750008ec0517chiddentear" /tr "C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2520

C:\Windows\system32\taskeng.exe
taskeng.exe {0ACF4641-36AC-4617-A8BF-466089BB3B0C} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe
  C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe
  2⤵
  - Executes dropped EXE
  PID:1844
- C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe
  C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe
  2⤵
  - Executes dropped EXE
  PID:1256

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\202409191600d925862ef753288750008ec0517chiddentear.exe

Filesize
140KB

MD5
1600d925862ef753288750008ec0517c

SHA1
19d690bb3bd6e9e2a4ae3704ed5eba5c6295996d

SHA256
e0f8da5010a1162b1480daec57e3d2122a3f4fc7ab89797fb75536729f7fb7d7

SHA512
4828feeb01daadd4f7f39a70814c6da727ca0f71a3e4a25b0ea9ddafc604d8ad2a1300c22490fc68ddd15eb325f99dba0e85a612e0ead4455af2f31116d218e7

Download Submit
memory/1844-11-0x00000000012F0000-0x0000000001318000-memory.dmp

Filesize
160KB

Download
memory/1872-0-0x000007FEF5CC3000-0x000007FEF5CC4000-memory.dmp

Filesize
4KB

Download
memory/1872-1-0x0000000000280000-0x00000000002A8000-memory.dmp

Filesize
160KB

Download
memory/1872-2-0x000007FEF5CC0000-0x000007FEF66AC000-memory.dmp

Filesize
9.9MB

Download
memory/1872-6-0x000007FEF5CC3000-0x000007FEF5CC4000-memory.dmp

Filesize
4KB

Download
memory/1872-7-0x000007FEF5CC0000-0x000007FEF66AC000-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