41099e0093e9ba94e90a5ea9ece569b420b07fab916ef162efc1a5bb282ff006

Analysis

user interaction
yes
max time kernel
510s
max time network
514s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
15/10/2026, 17:14

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General

Target
obfus.exe
Size 520KB
Sample261015-vsac8aaz2q
SHA256 41099e0093e9ba94e90a5ea9ece569b420b07fab916ef162efc1a5bb282ff006
MD5 7cfb958333c458598f8eec2adb25512a
SHA1 70d83e75708e2e0e5e8ec798f75ccc854d5b0dce
SHA512 2bebd3c2378e8d8275725eb33027500a97f48d40cb234927cde86e2cee2876289a1494838e9c11378631348fbbd620359a4d17bdd2e9c3b940778cc2ff9eb5c2
SSDEEP 6144:6L/undz2fLpzzlU0tOd/Zigp5Oj8WDWHS+IVaJvHu/DGUYtO3N1Zj033Kqox5SeO:bBIzzlAQph+XPVle8gtZUL
TLSH
T13DB4DAAD6EAA28B9DD0F28F45C1F00081F3416E78B5D1687F1B194FDB72A5C89A1B1F4
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution persistence privilege_escalation

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\System32\\userinit.exe,C:\\Windows\\Sub\\Client.exe"	obfus.exe

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

Executes dropped EXE 4 IoCs

pid	Process
4216	WatchDog.exe
1324	Client.exe
360	WatchDog.exe
2348	Client.exe

Loads dropped DLL 10 IoCs

pid	Process
5580	Process not Found
4300	Process not Found
3052	Process not Found
1784	Process not Found
5620	WmiApSrv.exe
5352	Process not Found
4216	WatchDog.exe
1324	Client.exe
360	WatchDog.exe
2348	Client.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-1-5-21-650287814-2715975232-1279715623-1000\Software\Microsoft\Windows\CurrentVersion\Run\WatchDog.exe = "C:\\Windows\\Sub\\WatchDog.exe"	obfus.exe

Drops file in Windows directory 15 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Sub\Client.exe	obfus.exe
File opened for modification	C:\Windows\Sub\Client.exe	WatchDog.exe
File opened for modification	C:\Windows\Sub	WatchDog.exe
File opened for modification	C:\Windows\Sub\Client.exe	Client.exe
File opened for modification	C:\Windows\Sub	obfus.exe
File opened for modification	C:\Windows\Sub\WatchDog.exe	obfus.exe
File opened for modification	C:\Windows\Sub	WatchDog.exe
File opened for modification	C:\Windows\Sub\WatchDog.exe	WatchDog.exe
File created	C:\Windows\Sub\Client.exe	obfus.exe
File opened for modification	C:\Windows\Sub\Client.exe	WatchDog.exe
File opened for modification	C:\Windows\Sub	Client.exe
File created	C:\Windows\Sub\WatchDog.exe	obfus.exe
File created	C:\Windows\xdwd.dll	obfus.exe
File opened for modification	C:\Windows\Sub\WatchDog.exe	WatchDog.exe
File opened for modification	C:\Windows\Sub\WatchDog.exe	Client.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5848	CMD.exe
4176	CMD.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 10 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	obfus.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	Client.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WatchDog.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	Client.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	obfus.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WatchDog.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	WatchDog.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	Client.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	WatchDog.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	Client.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1560	schtasks.exe
4184	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
5620	WmiApSrv.exe
5620	WmiApSrv.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
4216	WatchDog.exe
4216	WatchDog.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe
276	obfus.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	276	obfus.exe
Token: SeDebugPrivilege	4216	WatchDog.exe
Token: SeDebugPrivilege	360	WatchDog.exe
Token: SeDebugPrivilege	2348	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 276 wrote to memory of 4176	276	obfus.exe	90
PID 4176 wrote to memory of 1560	4176	CMD.exe	92
PID 276 wrote to memory of 5848	276	obfus.exe	93
PID 5848 wrote to memory of 4184	5848	CMD.exe	95
PID 4216 wrote to memory of 1324	4216	WatchDog.exe	103
PID 360 wrote to memory of 2348	360	WatchDog.exe	105

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\obfus.exe
"C:\Users\Admin\AppData\Local\Temp\obfus.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:276
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" /c SchTaSKs /create /f /sc minute /mo -1 /tn "WatchDog.exe" /tr "C:\Windows\Sub\Client.exe" /RL HIGHEST & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4176
- - C:\Windows\system32\schtasks.exe
    SchTaSKs /create /f /sc minute /mo -1 /tn "WatchDog.exe" /tr "C:\Windows\Sub\Client.exe" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1560
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" /c SchTaSKs /create /f /sc minute /mo 5 /tn "WatchDog.exe" /tr "C:\Windows\Sub\WatchDog.exe" /RL HIGHEST & exit
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:5848
- - C:\Windows\system32\schtasks.exe
    SchTaSKs /create /f /sc minute /mo 5 /tn "WatchDog.exe" /tr "C:\Windows\Sub\WatchDog.exe" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4184

C:\Windows\system32\wbem\WmiApSrv.exe
C:\Windows\system32\wbem\WmiApSrv.exe
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:5620

C:\Windows\Sub\WatchDog.exe
C:\Windows\Sub\WatchDog.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4216
- C:\Windows\Sub\Client.exe
  "C:\Windows\Sub\Client.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Reads the TCP/IP host and domain name from the registry
  PID:1324

C:\Windows\Sub\WatchDog.exe
"C:\Windows\Sub\WatchDog.exe"
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Windows directory
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:360
- C:\Windows\Sub\Client.exe
  "C:\Windows\Sub\Client.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - Reads the TCP/IP host and domain name from the registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2348

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

xdwd.dll

Path C:\Windows\xdwd.dll
Size 136KB
SHA256 35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
MD5 16e5a492c9c6ae34c59683be9c51fa31
SHA1 97031b41f5c56f371c28ae0d62a2df7d585adaba
SHA512 20fd369172ef5e3e2fde388666b42e8fe5f0c2bfa338c0345f45e98af6561a249ba3ecc48c3f16efcc73f02ecb67b3ddb1e2e8f0e77d18fa00ac34e6379e50b6
SSDEEP 3072:t0iX+jLyDcqaH9a6DFHo6MjD7VbZaZaZ8Xwlk4MHWZpt:t07yDSvdoRj2up
TLSH
T151D35B0772A500BFE1668638C5630A09E777B8211770DBAF33A4429D9F277E19D3AF61
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/276-6-0x00007FFB5CB20000-0x00007FFB5D4C4000-memory.dmp

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memory/276-2-0x00007FFB5CB20000-0x00007FFB5D4C4000-memory.dmp

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memory/276-3-0x00007FFB5CB20000-0x00007FFB5D4C4000-memory.dmp

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memory/276-4-0x00007FFB5CB20000-0x00007FFB5D4C4000-memory.dmp

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memory/276-5-0x00007FFB5CB20000-0x00007FFB5D4C4000-memory.dmp

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memory/276-1-0x0000000000A40000-0x0000000000AC8000-memory.dmp

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memory/276-44-0x00007FFB5CB20000-0x00007FFB5D4C4000-memory.dmp

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memory/276-0-0x00007FFB5CCAF000-0x00007FFB5CCB0000-memory.dmp

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memory/276-126-0x00007FFB5CB20000-0x00007FFB5D4C4000-memory.dmp

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memory/276-213-0x000000001CEA0000-0x000000001CFD4000-memory.dmp

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memory/276-212-0x000000001CCE0000-0x000000001CD56000-memory.dmp

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memory/276-214-0x0000000002D00000-0x0000000002D1E000-memory.dmp

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memory/276-215-0x0000000002EC0000-0x0000000002ECA000-memory.dmp

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