c25cbc60ff1ccca811239655636717c9ff4decb9190a557489389504b248d037

Analysis

max time kernel
92s
max time network
130s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
30/09/2026, 11:09

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General

Target
$PLUGINSDIR/KillSelf.dll
Size 5KB
Sample260930-m9b95ssdlf
SHA256 c25cbc60ff1ccca811239655636717c9ff4decb9190a557489389504b248d037
MD5 8b49e96b0bd0fe3822bd4f516ad543ab
SHA1 3d04d3a4377e2e1888cc2be333b129daa8d2894d
SHA512 46826285f213137cedefe379ece413730a36dcde016e5ac114743cb011e587fde503df1d70ea0e6c4213993749ac4d246e4c3c980b02e01239b392d0f5892e26
SSDEEP 48:qAQ89r6cqqL+U7fUQ3sd953WUPgC7TllKEpz4W7ShtC:BrNqqL+U7fZ3i5+C7Lz4W7Oc
TLSH
T1D8B1817BF79008B6C4854B381F1964325BAF783243D86001DD831EEA1DE8DE9E1366C7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

5^/10

discovery execution

Malware Config

Signatures

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32.exe	cmd.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 1 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
4100	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4184 wrote to memory of 5584	4184	rundll32.exe	88
PID 5584 wrote to memory of 4100	5584	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\KillSelf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4184
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\KillSelf.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5584
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c nnlh.bat "C:\Windows\SysWOW64\rundll32.exe"
    3⤵
    - Drops file in System32 directory
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4100

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

nnlh.bat

Path C:\Users\Admin\AppData\Local\Temp\nnlh.bat
Size 70B
SHA256 30c55012548697052877b13150bedae3156f9a502557d1ea816dbed647b4a8f8
MD5 bc5aca38e505da47e1ea8bcfb9df5bbb
SHA1 67dd2324979ff2c2dfc97f89db0fb939bd08c87a
SHA512 37ce0ab1b0ea58d3fddb8a25f6da6b970c454a7cd614932ea3a2c7f8d9c763172fee2a455d7d381397a67071d3f10e7b9159ce02dde0e0176c8e4180c47451cf
TLSH
T13DA002E112508A996C442B7E496F618CF66E85D38004DD69B83341F5FDB65BE520BDC3
MD5 SHA1 SHA512 TLSH

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