xworm | 20b9ba2ee8130e7429e60d96866ead0162827d5b55260dfd4c37b3e0bb509984

Analysis

max time kernel
44s
max time network
46s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-12-2024 18:32

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General

Target

Xworm V5.1-V5.2 installer.exe
Size

60.5MB
MD5

b73b67a67327b19636c5f4dcdfca6e6d
SHA1

17e034c0bd5ea7d9ad9fd034393d439131e77e2b
SHA256

20b9ba2ee8130e7429e60d96866ead0162827d5b55260dfd4c37b3e0bb509984
SHA512

6d06500798d5d03cb5f4a04d3414c0c8134e663ada30fa02e0c264b97397b99e27037f0fafba90f34988b65e8c0fd24157af05b18dd05379dfac17118b3e5f0b
SSDEEP

1572864:4kBBFYEeY/J7z9ZKx+1s1iEVekGqaAVn+8:fPFYEhN9ZK0cVdGR2nT

Score

10^/10

xworm execution persistence rat trojan upx

Malware Config

Extracted

Family

xworm

Version

5.0

camera-leadership.gl.at.ply.gg:48241

Mutex

xfoLhSSL3ZKAFHgp

Attributes

Install_directory
%AppData%
install_file
USB.exe
telegram
https://api.telegram.org/bot7517837255:AAG0nEVWhvscgRKAU7DCjZPeuglJdFmcYws/sendMessage?chat_id=7538845070

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012281-5.dat	family_xworm
behavioral1/memory/3016-7-0x0000000000CC0000-0x0000000000CD4000-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
2024	powershell.exe
2336	powershell.exe
580	powershell.exe
1516	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
3016	XClient.exe
1364	MAL.exe
2760	MAL.exe
1208	Process not Found

Loads dropped DLL 4 IoCs

pid	Process
868	Xworm V5.1-V5.2 installer.exe
1364	MAL.exe
2760	MAL.exe
1208	Process not Found

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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\System User = "C:\\Users\\Admin\\AppData\\Roaming\\System User"	XClient.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

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x00050000000195e6-38.dat	upx
behavioral1/memory/2760-40-0x000007FEF2630000-0x000007FEF2A9E000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000_Classes\Local Settings	rundll32.exe

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
2372	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3016	XClient.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2336	powershell.exe
580	powershell.exe
1516	powershell.exe
2024	powershell.exe
3016	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3016	XClient.exe
Token: SeDebugPrivilege	2336	powershell.exe
Token: SeDebugPrivilege	580	powershell.exe
Token: SeDebugPrivilege	1516	powershell.exe
Token: SeDebugPrivilege	2024	powershell.exe
Token: SeDebugPrivilege	3016	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3016	XClient.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 3016	868	Xworm V5.1-V5.2 installer.exe	31
PID 868 wrote to memory of 3016	868	Xworm V5.1-V5.2 installer.exe	31
PID 868 wrote to memory of 3016	868	Xworm V5.1-V5.2 installer.exe	31
PID 868 wrote to memory of 1364	868	Xworm V5.1-V5.2 installer.exe	32
PID 868 wrote to memory of 1364	868	Xworm V5.1-V5.2 installer.exe	32
PID 868 wrote to memory of 1364	868	Xworm V5.1-V5.2 installer.exe	32
PID 1364 wrote to memory of 2760	1364	MAL.exe	33
PID 1364 wrote to memory of 2760	1364	MAL.exe	33
PID 1364 wrote to memory of 2760	1364	MAL.exe	33
PID 868 wrote to memory of 2784	868	Xworm V5.1-V5.2 installer.exe	34
PID 868 wrote to memory of 2784	868	Xworm V5.1-V5.2 installer.exe	34
PID 868 wrote to memory of 2784	868	Xworm V5.1-V5.2 installer.exe	34
PID 2784 wrote to memory of 2976	2784	rundll32.exe	36
PID 2784 wrote to memory of 2976	2784	rundll32.exe	36
PID 2784 wrote to memory of 2976	2784	rundll32.exe	36
PID 3016 wrote to memory of 2336	3016	XClient.exe	37
PID 3016 wrote to memory of 2336	3016	XClient.exe	37
PID 3016 wrote to memory of 2336	3016	XClient.exe	37
PID 3016 wrote to memory of 580	3016	XClient.exe	39
PID 3016 wrote to memory of 580	3016	XClient.exe	39
PID 3016 wrote to memory of 580	3016	XClient.exe	39
PID 3016 wrote to memory of 1516	3016	XClient.exe	41
PID 3016 wrote to memory of 1516	3016	XClient.exe	41
PID 3016 wrote to memory of 1516	3016	XClient.exe	41
PID 3016 wrote to memory of 2024	3016	XClient.exe	43
PID 3016 wrote to memory of 2024	3016	XClient.exe	43
PID 3016 wrote to memory of 2024	3016	XClient.exe	43
PID 3016 wrote to memory of 2372	3016	XClient.exe	45
PID 3016 wrote to memory of 2372	3016	XClient.exe	45
PID 3016 wrote to memory of 2372	3016	XClient.exe	45
PID 2976 wrote to memory of 1116	2976	rundll32.exe	47
PID 2976 wrote to memory of 1116	2976	rundll32.exe	47
PID 2976 wrote to memory of 1116	2976	rundll32.exe	47
PID 1116 wrote to memory of 1044	1116	rundll32.exe	48
PID 1116 wrote to memory of 1044	1116	rundll32.exe	48
PID 1116 wrote to memory of 1044	1116	rundll32.exe	48
PID 1044 wrote to memory of 2248	1044	rundll32.exe	49
PID 1044 wrote to memory of 2248	1044	rundll32.exe	49
PID 1044 wrote to memory of 2248	1044	rundll32.exe	49
PID 2248 wrote to memory of 1560	2248	rundll32.exe	50
PID 2248 wrote to memory of 1560	2248	rundll32.exe	50
PID 2248 wrote to memory of 1560	2248	rundll32.exe	50

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 V5.1-V5.2 installer.exe
"C:\Users\Admin\AppData\Local\Temp\Xworm V5.1-V5.2 installer.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:868
- C:\Users\Admin\AppData\Roaming\XClient.exe
  "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - 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:3016
- - 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\XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2336
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:580
- - 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\System User'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1516
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System User'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2024
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System User" /tr "C:\Users\Admin\AppData\Roaming\System User"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2372
- C:\Users\Admin\AppData\Roaming\MAL.exe
  "C:\Users\Admin\AppData\Roaming\MAL.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1364
- - C:\Users\Admin\AppData\Roaming\MAL.exe
    "C:\Users\Admin\AppData\Roaming\MAL.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:2760
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\XWorm_v5.1-5.2.7z
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\XWorm_v5.1-5.2.7z
    3⤵
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:2976
  - - C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\XWorm_v5.1-5.2.7z
      4⤵
      Modifies registry class
      Suspicious use of WriteProcessMemory
      PID:1116
    - - C:\Windows\system32\rundll32.exe
        
        "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\XWorm_v5.1-5.2.7z
        5⤵
        Modifies registry class
        Suspicious use of WriteProcessMemory
        
        PID:1044
      - C:\Windows\system32\rundll32.exe
        
        "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\XWorm_v5.1-5.2.7z
        6⤵
        Modifies registry class
        Suspicious use of WriteProcessMemory
        
        PID:2248
        
        C:\Windows\system32\rundll32.exe
        
        "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\XWorm_v5.1-5.2.7z
        7⤵
        Modifies registry class
        
        PID:1560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\_MEI13642\python310.dll

Filesize
1.4MB

MD5
178a0f45fde7db40c238f1340a0c0ec0

SHA1
dcd2d3d14e06da3e8d7dc91a69b5fd785768b5fe

SHA256
9fcb5ad15bd33dd72122a171a5d950e8e47ceda09372f25df828010cde24b8ed

SHA512
4b790046787e57b9414a796838a026b1530f497a75c8e62d62b56f8c16a0cbedbefad3d4be957bc18379f64374d8d3bf62d3c64b53476c7c5005a7355acd2cee

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
1f96b91fb49f9f8b5f65ebaab027321e

SHA1
48d1a76b7b3be69bf1b654ba2898cf41a900c85a

SHA256
424bd8c92fc67da34f26efcf6eb961328ba54a543274db822aeff986dd6f4514

SHA512
9f340ec450bf25d9b7f878e34f0efb9de3e2f3bb20c17acaf911b134411cc391e34c38c649524b9ecc1cf9a0accccf9a8d76d588a9312f01740393c78cbf1c9f

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

Filesize
58KB

MD5
96876c85b8d3576dddadf8da920fdb84

SHA1
c8fa3c8f44e13623e26ac91f5d658ea63d541d12

SHA256
8d31334e331796c6fd64e09e2ff75b175ce98a8495807c8175cd79c9e858b030

SHA512
a7be884f7820b26191aad4ab9085ab8a8797780d789ea971425978f3347c2ddaa1d38221a953e0787d9fa4fb992059b3893722399dd959e28907a4dbae2dbffb

Download Submit
\Users\Admin\AppData\Roaming\MAL.exe

Filesize
6.0MB

MD5
d3ee3274fbca59750c65a339899fc20a

SHA1
c00e033488adb248a66564e4bdf7b6d282211308

SHA256
fad76babccde97b63de77e123d2e4f6cfcc2c205f9bd288a017e0e3769e8b750

SHA512
935c777105a1461ce4a463e39344e63d1ad7ffc9b540f1e05f3bafd263486428164819bfec0f5b47621bf7c7a3f709d1bfb656521d7c85f52686cab537a2bd6a

Download Submit
memory/580-54-0x000000001B710000-0x000000001B9F2000-memory.dmp

Filesize
2.9MB

Download
memory/580-55-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/868-1-0x00000000010D0000-0x0000000004D5C000-memory.dmp

Filesize
60.5MB

Download
memory/868-0-0x000007FEF5A13000-0x000007FEF5A14000-memory.dmp

Filesize
4KB

Download
memory/2336-47-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2336-48-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download
memory/2760-40-0x000007FEF2630000-0x000007FEF2A9E000-memory.dmp

Filesize
4.4MB

Download
memory/3016-9-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/3016-42-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/3016-7-0x0000000000CC0000-0x0000000000CD4000-memory.dmp

Filesize
80KB

Download
memory/3016-71-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download
memory/3016-73-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Filesize
9.9MB

Download