xworm | 7d47a0ba9eeeb8fb9d25bc2c6acdc99408460d6d6b15957b487b3df724e9184d

General

Target

2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe
Size

178KB
MD5

718db92b63e8d468d2486f8222427c77
SHA1

e0d354a3159477957ff06435ecfa38bce32f1f2e
SHA256

7d47a0ba9eeeb8fb9d25bc2c6acdc99408460d6d6b15957b487b3df724e9184d
SHA512

4f936667e6dbb0d08709ebab96829c874a9c1285d9665e23379b15047335cc3109b0aaf53e32d9df39a52ed6beecc6dc4d615c84e2add4701abd160feb1990f1
SSDEEP

3072:r/H9jF3sXqPXlXmbGQz1i8dOyucD1sM+lmsolAIrRuw+mqv9j1MWLQI:jHHsOmbrhwK+lDAA

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

198.7.115.133:7772

Attributes

Install_directory
%AppData%
install_file
MSClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1480-1-0x0000000000FD0000-0x0000000001002000-memory.dmp	family_xworm
behavioral2/files/0x0007000000023cdb-10.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MSClient.lnk	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\MSClient.lnk	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe

Executes dropped EXE 2 IoCs

pid	Process
2340	MSClient.exe
4428	MSClient.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSClient = "C:\\Users\\Admin\\AppData\\Roaming\\MSClient.exe"	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.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
5000	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1480	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1480	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1480	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe
Token: SeDebugPrivilege	1480	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe
Token: SeDebugPrivilege	2340	MSClient.exe
Token: SeDebugPrivilege	4428	MSClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1480	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 5000	1480	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe	96
PID 1480 wrote to memory of 5000	1480	2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe	96

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\2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_718db92b63e8d468d2486f8222427c77_hiddentear.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:1480
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "MSClient" /tr "C:\Users\Admin\AppData\Roaming\MSClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5000

C:\Users\Admin\AppData\Roaming\MSClient.exe
C:\Users\Admin\AppData\Roaming\MSClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2340

C:\Users\Admin\AppData\Roaming\MSClient.exe
C:\Users\Admin\AppData\Roaming\MSClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4428

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\MSClient.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Roaming\MSClient.exe

Filesize
178KB

MD5
718db92b63e8d468d2486f8222427c77

SHA1
e0d354a3159477957ff06435ecfa38bce32f1f2e

SHA256
7d47a0ba9eeeb8fb9d25bc2c6acdc99408460d6d6b15957b487b3df724e9184d

SHA512
4f936667e6dbb0d08709ebab96829c874a9c1285d9665e23379b15047335cc3109b0aaf53e32d9df39a52ed6beecc6dc4d615c84e2add4701abd160feb1990f1

Download Submit
memory/1480-0-0x00007FFCBC1F3000-0x00007FFCBC1F5000-memory.dmp

Filesize
8KB

Download
memory/1480-1-0x0000000000FD0000-0x0000000001002000-memory.dmp

Filesize
200KB

Download
memory/1480-2-0x00007FFCBC1F3000-0x00007FFCBC1F5000-memory.dmp

Filesize
8KB

Download
memory/1480-7-0x00007FFCBC1F0000-0x00007FFCBCCB1000-memory.dmp

Filesize
10.8MB

Download
memory/1480-8-0x00007FFCBC1F0000-0x00007FFCBCCB1000-memory.dmp

Filesize
10.8MB

Download
memory/2340-12-0x00007FFCBC1F0000-0x00007FFCBCCB1000-memory.dmp

Filesize
10.8MB

Download
memory/2340-13-0x00007FFCBC1F0000-0x00007FFCBCCB1000-memory.dmp

Filesize
10.8MB

Download
memory/2340-15-0x00007FFCBC1F0000-0x00007FFCBCCB1000-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