zloader | 6758e40ac447186fc8390e3814d81c4b90b3ec89b20c5db2b2c6ebda9d6df41e

Analysis

max time kernel
149s
max time network
93s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
02/06/2026, 07:02

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General

Target
tmp231xr4t_.dll
Size 473KB
Sample260602-htt3ssfx2z
SHA256 6758e40ac447186fc8390e3814d81c4b90b3ec89b20c5db2b2c6ebda9d6df41e
MD5 76119c4aa12ef9f24b32a78e802d8636
SHA1 b4d5ef5ae3a92ceb4b9a21dc13d7e84a998ab4e2
SHA512 eb2fe95883f6de57545acb6403bc6387cfa2a8572e58cb4bacf4d889be14fd5505bd0a8e587e9b7b3bc4d12fdc8ea44b1fbf1dae57bbda9d2d384958c2e2e082
SSDEEP 12288:T2s6153c0KPnJHFlswhjmoUYtIdySZYBk:TZ8VP8jmotI2S
TLSH
T1EAA4D0E25940B2B0D14BC97E9420B1B681F97C2A7F549180F98B47B735372FAA994FC3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

botnet bot5 bot5 discovery zloader persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

bot5

Campaign

bot5

https://militanttra.at/owg.php

Attributes

build_id
15

rc4.plain

rsa_pubkey.plain

Signatures

Family: Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1636999435-3883760687-346127294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Moowp = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Yhloz\\muibn.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3168 set thread context of 1836	3168	rundll32.exe	81

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	msiexec.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1836	msiexec.exe
Token: SeSecurityPrivilege	1836	msiexec.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3640 wrote to memory of 3168	3640	rundll32.exe	80
PID 3168 wrote to memory of 1836	3168	rundll32.exe	81
PID 3168 wrote to memory of 1836	3168	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmp231xr4t_.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3640
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmp231xr4t_.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3168
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1836

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1836-8-0x0000000001220000-0x000000000124B000-memory.dmp

Download

memory/1836-12-0x0000000001220000-0x000000000124B000-memory.dmp

Download

memory/1836-13-0x0000000001220000-0x000000000124B000-memory.dmp

Download

memory/3168-0-0x000000001005C000-0x000000001005F000-memory.dmp

Download

memory/3168-2-0x0000000010000000-0x0000000010178000-memory.dmp

Download

memory/3168-1-0x0000000010000000-0x0000000010178000-memory.dmp

Download

memory/3168-3-0x0000000010000000-0x0000000010178000-memory.dmp

Download

memory/3168-4-0x000000001005C000-0x000000001005F000-memory.dmp

Download

memory/3168-10-0x0000000010000000-0x0000000010178000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads