0105f4cb41a3f2c650a736dbb3cb508444b0691c7c1cb5ebb3ff495023a7387a

Analysis

max time kernel
149s
platform
windows11-21h2_x64
resource
win11-20260911-en
resource tags

arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
02/10/2026, 15:39

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General

Target
altos.dll
Size 110KB
Sample261002-s3vqssvbpb
SHA256 0105f4cb41a3f2c650a736dbb3cb508444b0691c7c1cb5ebb3ff495023a7387a
MD5 f2c23879a36e42805df864115e7f67a5
SHA1 3409a0ff5433c69d2a3ba6873eb2765c5c8d8663
SHA512 0b5248c9e0e5cc30a71fb47fdbc4fbd955c5bf4905879f0a263a76fe4fb969046ff62b61d54e2c81685a4c3c42afec759fe3aa60255634a8b5debd88567f7f0c
SSDEEP 1536:ZtRcmUlpdfRV5lGMys5PQ6i8vkOrlbePg1asm/Le0AwyKdEouFt:ZtRcmApdfXGO5HYCmEoQ
TLSH
T15DB32A91B9C19C9BF510167A849FC36A213DB6D887434F036E35BA356B23AD07DC325B
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 6004 wrote to memory of 6068	6004	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\altos.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:6004
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\altos.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:6068

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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