d8d2e81392d44951cd394535a179fa37f711461f4783292b3eb05f0367ece2dd

Analysis

max time kernel
119s
max time network
118s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
06/07/2026, 02:06

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General

Target
fa65a2r7aakzyn10.exe
Size 695KB
Sample260706-cjnkdahs3x
SHA256 d8d2e81392d44951cd394535a179fa37f711461f4783292b3eb05f0367ece2dd
MD5 0ceb4c6c85420fe232b09316164f977d
SHA1 8563eb004da870a4d6ff0a88c6e5305d97572bc2
SHA512 ff023252bcecbf26709da970071cac8f4fd708c76c40320f44299f4c13ae502abb5402a66a76246b3172594bd46c34b19c2a6dca29847e97e1dd6744501160be
SSDEEP 12288:DR40G0IZgAhc0Lu2IPc5DG04BarOVBT9gI3NUftzhGOjgN:OHc0x8cxG04Bai5gI3NotzhG7
TLSH
T1D4E494247B94AE01E540163E92BE2618D73260F223176B473B0BF7615D44AEEED6C3DB
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

execution persistence

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\\Sub32"	fa65a2r7aakzyn10.exe

Executes dropped EXE 2 IoCs

pid	Process
3996	Sub32
4308	Sub32

Looks up external IP address via web service 4 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	api.ipify.org
3	api.ipify.org
4	api.ipify.org
27	api.ipify.org

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Staem	fa65a2r7aakzyn10.exe
File opened for modification	C:\Program Files\Staem	fa65a2r7aakzyn10.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Sub32	fa65a2r7aakzyn10.exe
File opened for modification	C:\Windows\Sub32	fa65a2r7aakzyn10.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 8 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
1684	schtasks.exe
2324	schtasks.exe
1124	schtasks.exe
2060	schtasks.exe
2580	schtasks.exe
5384	schtasks.exe
2376	schtasks.exe
1304	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3348	fa65a2r7aakzyn10.exe
3348	fa65a2r7aakzyn10.exe
3348	fa65a2r7aakzyn10.exe
3348	fa65a2r7aakzyn10.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3348	fa65a2r7aakzyn10.exe
Token: SeDebugPrivilege	3996	Sub32
Token: SeIncBasePriorityPrivilege	3996	Sub32
Token: SeDebugPrivilege	4308	Sub32

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3348 wrote to memory of 3424	3348	fa65a2r7aakzyn10.exe	90
PID 3348 wrote to memory of 5744	3348	fa65a2r7aakzyn10.exe	91
PID 5744 wrote to memory of 5384	5744	cmd.exe	94
PID 3348 wrote to memory of 5556	3348	fa65a2r7aakzyn10.exe	95
PID 5556 wrote to memory of 2376	5556	cmd.exe	97
PID 3348 wrote to memory of 4040	3348	fa65a2r7aakzyn10.exe	98
PID 4040 wrote to memory of 1304	4040	cmd.exe	100
PID 3348 wrote to memory of 2904	3348	fa65a2r7aakzyn10.exe	101
PID 2904 wrote to memory of 1684	2904	cmd.exe	103
PID 3996 wrote to memory of 4904	3996	Sub32	105
PID 4904 wrote to memory of 2324	4904	cmd.exe	107
PID 3996 wrote to memory of 5748	3996	Sub32	109
PID 5748 wrote to memory of 1124	5748	cmd.exe	111
PID 3996 wrote to memory of 3480	3996	Sub32	113
PID 3480 wrote to memory of 2060	3480	cmd.exe	115
PID 3996 wrote to memory of 3000	3996	Sub32	116
PID 3000 wrote to memory of 2580	3000	cmd.exe	118

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\fa65a2r7aakzyn10.exe
"C:\Users\Admin\AppData\Local\Temp\fa65a2r7aakzyn10.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Windows\SYSTEM32\CMD.exe
  "CMD" netsh advfirewall firewall add rule name="y'5$Fj0\F5-KF2" dir=in action=allow program="C:\Windows\Sub32" enable=yes & exit
  2⤵
  PID:3424
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Windows\Sub32" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5744
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Windows\Sub32" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5384
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5556
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2376
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Windows\Sub32" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4040
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Windows\Sub32" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1304
- C:\Windows\SYSTEM32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1684

C:\Windows\Sub32
"C:\Windows\Sub32"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3996
- C:\Windows\system32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4904
- - C:\Windows\System32\schtasks.exe
    schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2324
- C:\Windows\system32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5748
- - C:\Windows\System32\schtasks.exe
    schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1124
- C:\Windows\system32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3480
- - C:\Windows\System32\schtasks.exe
    schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2060
- C:\Windows\system32\cmd.exe
  "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3000
- - C:\Windows\System32\schtasks.exe
    schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Program Files\Staem" /RL HIGHEST
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2580

C:\Windows\Sub32
"C:\Windows\Sub32"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4308

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Sub32

Path C:\Windows\Sub32
Size 695KB
SHA256 d8d2e81392d44951cd394535a179fa37f711461f4783292b3eb05f0367ece2dd
MD5 0ceb4c6c85420fe232b09316164f977d
SHA1 8563eb004da870a4d6ff0a88c6e5305d97572bc2
SHA512 ff023252bcecbf26709da970071cac8f4fd708c76c40320f44299f4c13ae502abb5402a66a76246b3172594bd46c34b19c2a6dca29847e97e1dd6744501160be
SSDEEP 12288:DR40G0IZgAhc0Lu2IPc5DG04BarOVBT9gI3NUftzhGOjgN:OHc0x8cxG04Bai5gI3NotzhG7
TLSH
T1D4E494247B94AE01E540163E92BE2618D73260F223176B473B0BF7615D44AEEED6C3DB
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3348-1-0x00007FFE948FF000-0x00007FFE94900000-memory.dmp

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memory/3348-0-0x0000016D29860000-0x0000016D2990E000-memory.dmp

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memory/3348-2-0x00007FFE94770000-0x00007FFE95114000-memory.dmp

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memory/3348-3-0x00007FFE94770000-0x00007FFE95114000-memory.dmp

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memory/3348-4-0x00007FFE94770000-0x00007FFE95114000-memory.dmp

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memory/3348-5-0x00007FFE94770000-0x00007FFE95114000-memory.dmp

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memory/3348-6-0x00007FFE94770000-0x00007FFE95114000-memory.dmp

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memory/3348-7-0x00007FFE94770000-0x00007FFE95114000-memory.dmp

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memory/3348-36-0x00007FFE94770000-0x00007FFE95114000-memory.dmp

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memory/3348-65-0x00007FFE94770000-0x00007FFE95114000-memory.dmp

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