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 2 IoCs

resource	yara_rule
behavioral2/memory/4600-1-0x0000000000550000-0x0000000000578000-memory.dmp	family_xworm
behavioral2/files/0x0008000000023453-14.dat	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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	202409191600d925862ef753288750008ec0517chiddentear.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3336	202409191600d925862ef753288750008ec0517chiddentear.exe
3372	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-1-5-21-355097885-2402257403-2971294179-1000\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
3	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
4436	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4600	202409191600d925862ef753288750008ec0517chiddentear.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4600 wrote to memory of 4436	4600	202409191600d925862ef753288750008ec0517chiddentear.exe	85
PID 4600 wrote to memory of 4436	4600	202409191600d925862ef753288750008ec0517chiddentear.exe	85

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⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4600
- 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:4436

C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe
C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe
1⤵
- Executes dropped EXE
PID:3336

C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe
C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe
1⤵
- Executes dropped EXE
PID:3372

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\202409191600d925862ef753288750008ec0517chiddentear.exe.log

Filesize
1KB

MD5
a8a147915e3a996fdbe10b3a3f1e1bb2

SHA1
abc564c1be468d57e700913e7b6cf8f62d421263

SHA256
8b96a8557deea66696837af011843d6a82451ba57c8f9b5a2726a70818d6fc7e

SHA512
17b42f17ef60a9f625703172763f692e5ed2ca93564a97853dfa72bb0ac6305ef3267aea0b205938e3aa8eac10156d9d4f322b30d0329d92d647bcec6372731c

Download Submit
C:\Users\Admin\AppData\Roaming\202409191600d925862ef753288750008ec0517chiddentear.exe

Filesize
140KB

MD5
1600d925862ef753288750008ec0517c

SHA1
19d690bb3bd6e9e2a4ae3704ed5eba5c6295996d

SHA256
e0f8da5010a1162b1480daec57e3d2122a3f4fc7ab89797fb75536729f7fb7d7

SHA512
4828feeb01daadd4f7f39a70814c6da727ca0f71a3e4a25b0ea9ddafc604d8ad2a1300c22490fc68ddd15eb325f99dba0e85a612e0ead4455af2f31116d218e7

Download Submit
memory/3336-16-0x00007FFD00300000-0x00007FFD00DC1000-memory.dmp

Filesize
10.8MB

Download
memory/3336-18-0x00007FFD00300000-0x00007FFD00DC1000-memory.dmp

Filesize
10.8MB

Download
memory/4600-0-0x00007FFD00303000-0x00007FFD00305000-memory.dmp

Filesize
8KB

Download
memory/4600-1-0x0000000000550000-0x0000000000578000-memory.dmp

Filesize
160KB

Download
memory/4600-2-0x00007FFD00300000-0x00007FFD00DC1000-memory.dmp

Filesize
10.8MB

Download
memory/4600-6-0x00007FFD00303000-0x00007FFD00305000-memory.dmp

Filesize
8KB

Download
memory/4600-7-0x000000001B640000-0x000000001B742000-memory.dmp

Filesize
1.0MB

Download
memory/4600-8-0x00007FFD00300000-0x00007FFD00DC1000-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