xworm | 1c4c8d4b80aadd685bf7344b326116a30265c0c1ca7cbaf40f3719b825a2740a

General

Target

ez.exe
Size

46.0MB
MD5

c09e00509d7efa941fd97f50ee999feb
SHA1

117361c0c4d9aee118c7cfa4b44af9c561f2d2f9
SHA256

1c4c8d4b80aadd685bf7344b326116a30265c0c1ca7cbaf40f3719b825a2740a
SHA512

3a4e50e44deb484d296579d5d40e9379cef1a4f62869dd2a753244849019c77837defc4bf3349b68b5f9b61b30ea29f4d5f7d087c0d1b321e06e5d93beb69ca1
SSDEEP

393216:9YXEXR3uzMK0GWSFqlV3lYWmnHGm8mtGDfdJlU8Jq8tA9KxFxCfV:9YXEXhuzMmF26WmnHGrO1

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

trip-thesaurus.gl.at.ply.gg:16715

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2656-1-0x0000000001070000-0x000000000108A000-memory.dmp	family_xworm
behavioral1/memory/1956-37-0x0000000000800000-0x000000000081A000-memory.dmp	family_xworm
behavioral1/memory/2124-39-0x00000000009C0000-0x00000000009DA000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2576	powershell.exe
3056	powershell.exe
1100	powershell.exe
336	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1956	SecurityHealthSystray
2124	SecurityHealthSystray

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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\SecurityHealthSystray = "C:\\Users\\Admin\\AppData\\Roaming\\SecurityHealthSystray"	ez.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
872	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2656	ez.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2576	powershell.exe
3056	powershell.exe
1100	powershell.exe
336	powershell.exe
2656	ez.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2656	ez.exe
Token: SeDebugPrivilege	2576	powershell.exe
Token: SeDebugPrivilege	3056	powershell.exe
Token: SeDebugPrivilege	1100	powershell.exe
Token: SeDebugPrivilege	336	powershell.exe
Token: SeDebugPrivilege	2656	ez.exe
Token: SeDebugPrivilege	1956	SecurityHealthSystray
Token: SeDebugPrivilege	2124	SecurityHealthSystray

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2656	ez.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2576	2656	ez.exe	31
PID 2656 wrote to memory of 2576	2656	ez.exe	31
PID 2656 wrote to memory of 2576	2656	ez.exe	31
PID 2656 wrote to memory of 3056	2656	ez.exe	33
PID 2656 wrote to memory of 3056	2656	ez.exe	33
PID 2656 wrote to memory of 3056	2656	ez.exe	33
PID 2656 wrote to memory of 1100	2656	ez.exe	35
PID 2656 wrote to memory of 1100	2656	ez.exe	35
PID 2656 wrote to memory of 1100	2656	ez.exe	35
PID 2656 wrote to memory of 336	2656	ez.exe	37
PID 2656 wrote to memory of 336	2656	ez.exe	37
PID 2656 wrote to memory of 336	2656	ez.exe	37
PID 2656 wrote to memory of 872	2656	ez.exe	39
PID 2656 wrote to memory of 872	2656	ez.exe	39
PID 2656 wrote to memory of 872	2656	ez.exe	39
PID 2260 wrote to memory of 1956	2260	taskeng.exe	42
PID 2260 wrote to memory of 1956	2260	taskeng.exe	42
PID 2260 wrote to memory of 1956	2260	taskeng.exe	42
PID 2260 wrote to memory of 2124	2260	taskeng.exe	43
PID 2260 wrote to memory of 2124	2260	taskeng.exe	43
PID 2260 wrote to memory of 2124	2260	taskeng.exe	43

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\ez.exe
"C:\Users\Admin\AppData\Local\Temp\ez.exe"
1⤵
- 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:2656
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\ez.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2576
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'ez.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3056
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\SecurityHealthSystray'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1100
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SecurityHealthSystray'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:336
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SecurityHealthSystray" /tr "C:\Users\Admin\AppData\Roaming\SecurityHealthSystray"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:872

C:\Windows\system32\taskeng.exe
taskeng.exe {45C4D737-47A6-4479-AB95-FB384F2FB179} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2260
- C:\Users\Admin\AppData\Roaming\SecurityHealthSystray
  C:\Users\Admin\AppData\Roaming\SecurityHealthSystray
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1956
- C:\Users\Admin\AppData\Roaming\SecurityHealthSystray
  C:\Users\Admin\AppData\Roaming\SecurityHealthSystray
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
7c829072ea431afb458b34d11655fad7

SHA1
a37135058735a639cfb955df40508ac66fdb90be

SHA256
e7a6c47c0a786c4196c5f9393839f3f366b13446921672430cc47b91f204a8ae

SHA512
414061027aeabf1f3c2327f22e85d50b04e31707d426292620b40f491ae4cbda53da8be267087c0a750e5dbb00022e84f020805d2d6c1de08f6e337d078c3f98

Download Submit
C:\Users\Admin\AppData\Roaming\SecurityHealthSystray

Filesize
46.0MB

MD5
c09e00509d7efa941fd97f50ee999feb

SHA1
117361c0c4d9aee118c7cfa4b44af9c561f2d2f9

SHA256
1c4c8d4b80aadd685bf7344b326116a30265c0c1ca7cbaf40f3719b825a2740a

SHA512
3a4e50e44deb484d296579d5d40e9379cef1a4f62869dd2a753244849019c77837defc4bf3349b68b5f9b61b30ea29f4d5f7d087c0d1b321e06e5d93beb69ca1

Download Submit
memory/1956-37-0x0000000000800000-0x000000000081A000-memory.dmp

Filesize
104KB

Download
memory/2124-39-0x00000000009C0000-0x00000000009DA000-memory.dmp

Filesize
104KB

Download
memory/2576-7-0x00000000028B0000-0x0000000002930000-memory.dmp

Filesize
512KB

Download
memory/2576-8-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/2576-9-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2656-2-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download
memory/2656-0-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

Filesize
4KB

Download
memory/2656-28-0x000007FEF58A3000-0x000007FEF58A4000-memory.dmp

Filesize
4KB

Download
memory/2656-32-0x000007FEF58A0000-0x000007FEF628C000-memory.dmp

Filesize
9.9MB

Download
memory/2656-1-0x0000000001070000-0x000000000108A000-memory.dmp

Filesize
104KB

Download
memory/3056-16-0x0000000001EE0000-0x0000000001EE8000-memory.dmp

Filesize
32KB

Download
memory/3056-15-0x000000001B680000-0x000000001B962000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads