f4d86609c9ab513914efa6de6ad589ec7ac130e38d71b7c9fc1d3409ee99f208

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
16/07/2026, 18:28

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General

Target
bass.dll
Size 96KB
Sample260716-w4fvtabv2m
SHA256 f4d86609c9ab513914efa6de6ad589ec7ac130e38d71b7c9fc1d3409ee99f208
MD5 db448d20039046010a31c2afef16e937
SHA1 56f4d2b1639101e795e173b2c96c22fc0ca4e236
SHA512 9f89566a2905889893f4832b993bf29a3bdf1537d29e44b625774f937ffba2bee7d1c899b5b5eb43300f5d322ffd395fe139bb9f6bcb7a8ebce9daec904fcdfb
SSDEEP 3072:fsuLSIr0yB/0Zf5AvwyVNtZiqK/0Y12hZ4+s:rDkfCvhVNH9Aos
TLSH
T19CA301F6619842EBC727293606DA6363A6D06B04F502EFCE7EA4C37576DC2D51E76300
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

System Location Discovery: System Language Discovery 1 TTPs 1 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

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 4540	1812	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bass.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bass.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4540

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4540-0-0x0000000011000000-0x0000000011062000-memory.dmp

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