xworm | 795936e455d9816df8dc97b8d2653c711a9084dd887dcc6ae857f11493b1b270

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
16-11-2024 14:43

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General

Target

FullOptionFivemFree2024NEW.exe
Size

3.9MB
MD5

679df4417fc2227844b44878d7de7743
SHA1

d21a53d46aef380de82f584c5ab0a6fe83f52163
SHA256

795936e455d9816df8dc97b8d2653c711a9084dd887dcc6ae857f11493b1b270
SHA512

e1a13722728c1b8d3b8518b7467dedeb4b74fcd8a011a8429e7203490ccf9d3ec3396e127b9b16a78ea2935cf1110d7a57d1c52aed368e94f3223496fe24f0c6
SSDEEP

98304:O+/27mY8Whua/AOQtRWxNRNXqsSCWQmL3Ah/iw:OaYua/ANeXNXcQRZ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

45.141.26.194:7000

Attributes

Install_directory
%ProgramData%

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/2988-12-0x00000000008C0000-0x00000000008DA000-memory.dmp	family_xworm
behavioral1/files/0x0014000000016fc9-11.dat	family_xworm
behavioral1/memory/2192-46-0x0000000000FB0000-0x0000000000FCA000-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
2312	powershell.exe
2956	powershell.exe
2788	powershell.exe
2936	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 4 IoCs

pid	Process
2856	FULLOPTION.exe
2988	guest-tool.exe
2192	Registry
2384	Registry

Loads dropped DLL 1 IoCs

pid	Process
2904	FullOptionFivemFree2024NEW.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Registry = "C:\\ProgramData\\Registry"	guest-tool.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
2212	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2788	powershell.exe
2936	powershell.exe
2312	powershell.exe
2956	powershell.exe
2988	guest-tool.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	guest-tool.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeDebugPrivilege	2936	powershell.exe
Token: SeDebugPrivilege	2312	powershell.exe
Token: SeDebugPrivilege	2956	powershell.exe
Token: SeDebugPrivilege	2988	guest-tool.exe
Token: SeDebugPrivilege	2192	Registry
Token: SeDebugPrivilege	2384	Registry

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2988	guest-tool.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 2856	2904	FullOptionFivemFree2024NEW.exe	29
PID 2904 wrote to memory of 2856	2904	FullOptionFivemFree2024NEW.exe	29
PID 2904 wrote to memory of 2856	2904	FullOptionFivemFree2024NEW.exe	29
PID 2904 wrote to memory of 2988	2904	FullOptionFivemFree2024NEW.exe	30
PID 2904 wrote to memory of 2988	2904	FullOptionFivemFree2024NEW.exe	30
PID 2904 wrote to memory of 2988	2904	FullOptionFivemFree2024NEW.exe	30
PID 2988 wrote to memory of 2788	2988	guest-tool.exe	32
PID 2988 wrote to memory of 2788	2988	guest-tool.exe	32
PID 2988 wrote to memory of 2788	2988	guest-tool.exe	32
PID 2988 wrote to memory of 2936	2988	guest-tool.exe	34
PID 2988 wrote to memory of 2936	2988	guest-tool.exe	34
PID 2988 wrote to memory of 2936	2988	guest-tool.exe	34
PID 2988 wrote to memory of 2312	2988	guest-tool.exe	36
PID 2988 wrote to memory of 2312	2988	guest-tool.exe	36
PID 2988 wrote to memory of 2312	2988	guest-tool.exe	36
PID 2988 wrote to memory of 2956	2988	guest-tool.exe	38
PID 2988 wrote to memory of 2956	2988	guest-tool.exe	38
PID 2988 wrote to memory of 2956	2988	guest-tool.exe	38
PID 2988 wrote to memory of 2212	2988	guest-tool.exe	40
PID 2988 wrote to memory of 2212	2988	guest-tool.exe	40
PID 2988 wrote to memory of 2212	2988	guest-tool.exe	40
PID 2480 wrote to memory of 2192	2480	taskeng.exe	43
PID 2480 wrote to memory of 2192	2480	taskeng.exe	43
PID 2480 wrote to memory of 2192	2480	taskeng.exe	43
PID 2480 wrote to memory of 2384	2480	taskeng.exe	44
PID 2480 wrote to memory of 2384	2480	taskeng.exe	44
PID 2480 wrote to memory of 2384	2480	taskeng.exe	44

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\FullOptionFivemFree2024NEW.exe
"C:\Users\Admin\AppData\Local\Temp\FullOptionFivemFree2024NEW.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Users\Public\FULLOPTION.exe
  "C:\Users\Public\FULLOPTION.exe"
  2⤵
  - Executes dropped EXE
  PID:2856
- C:\Users\Public\guest-tool.exe
  "C:\Users\Public\guest-tool.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2988
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\guest-tool.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2788
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'guest-tool.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2936
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\Registry'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2312
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Registry'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2956
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Registry" /tr "C:\ProgramData\Registry"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2212

C:\Windows\system32\taskeng.exe
taskeng.exe {C4677452-FB8A-4881-A5FA-DD82F726624A} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2480
- C:\ProgramData\Registry
  C:\ProgramData\Registry
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2192
- C:\ProgramData\Registry
  C:\ProgramData\Registry
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2384

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

Filesize
7KB

MD5
e334e10e6a28d6d893bef0beb0c8225c

SHA1
f3d2b5a911dbd941b910760dab5f1d7cb2343bbb

SHA256
18aefbb449de14d9b316a8c2b3dafd5d77c33ff922effea0013bb2114429b7c4

SHA512
5bd243a0cd6fb39e29724fc8ecfa1c0f28c64785cfeb6f59daba63042cc8d02b73dee4f603498d8b0dcc9029ade07fafed0188a9063a46ed78815d75e090f642

Download Submit
C:\Users\Public\FULLOPTION.exe

Filesize
3.9MB

MD5
8bc3bef3b25f503aff956735680ee173

SHA1
76916bad2964bf481ebe891932911eb5f9f4f288

SHA256
91a0c2becd82339bc45f56e43b5f32f422ce1c51360c5a3c3fdde244afd48dba

SHA512
71e9abd586466b1730d29808bdf77a4a5a5659cd1fe1ca53fea8dddf859ba0f7a7da1a517305ec57edd09245e8efaa5c3d7ec97a2203e3315374a4331ce5b4a9

Download Submit
C:\Users\Public\guest-tool.exe

Filesize
76KB

MD5
e32aaac90783d442e17c1fbd31767aee

SHA1
b2974be4d00d6dbee9d98b43fd830adc9261f1a7

SHA256
cedd1466f8c37294b89f0afed68a00125e34d839f56aa8241d3692c7376c9a0e

SHA512
f2c2a826c384c5a6f83447d48b54afe990ef8df5c0228dcf15946d5c5e2637bf288ef072cc5e9e7cd3fd9302170360bf792e8deb89af93b405d7a9c15dc71096

Download Submit
memory/2192-46-0x0000000000FB0000-0x0000000000FCA000-memory.dmp

Filesize
104KB

Download
memory/2788-19-0x000000001B160000-0x000000001B442000-memory.dmp

Filesize
2.9MB

Download
memory/2788-20-0x0000000002870000-0x0000000002878000-memory.dmp

Filesize
32KB

Download
memory/2904-1-0x0000000001210000-0x0000000001608000-memory.dmp

Filesize
4.0MB

Download
memory/2904-0-0x000007FEF5F03000-0x000007FEF5F04000-memory.dmp

Filesize
4KB

Download
memory/2936-27-0x000000001B2C0000-0x000000001B5A2000-memory.dmp

Filesize
2.9MB

Download
memory/2936-28-0x0000000002670000-0x0000000002678000-memory.dmp

Filesize
32KB

Download
memory/2988-12-0x00000000008C0000-0x00000000008DA000-memory.dmp

Filesize
104KB

Download
memory/2988-26-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2988-14-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2988-34-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2988-13-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download