zloader | d30ea78e08d83a4c2b697c7af5aeca296f852161d328c5b2339d6cb4dfd186c8

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
09/06/2026, 06:17

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General

Target
tmpzttslrfj.dll
Size 475KB
Sample260609-g2jflaev3n
SHA256 d30ea78e08d83a4c2b697c7af5aeca296f852161d328c5b2339d6cb4dfd186c8
MD5 3d57b0aa3d2d19ab64f533979f5e097c
SHA1 170245def6b4ab0e600c9ab07e85d42789b43877
SHA512 eee50f103eb13a00cef05895eb78f44ed744e6ac5b186abd864370c597d6a0cf7951ddb3478e25a9a644a710194bccd45c10f1b9b89ac514268a7bd0e057513a
SSDEEP 12288:uV4iJjEhaSUonKbgrcNkOJaKYzAJ1SeDqGP:OTJ5S7nSgrcNj1PSeWK
TLSH
T158A4D0E25950B2B4D14BC87E9520A17681FEAC6A7F50D080F98B47BB29371FE9854FC3
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-1-5-21-1788976790-1541110888-1636651838-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Fyvoroqe = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Vukaf\\boer.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4876 set thread context of 1588	4876	rundll32.exe	107

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	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1588	msiexec.exe
Token: SeSecurityPrivilege	1588	msiexec.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 332 wrote to memory of 4876	332	rundll32.exe	83
PID 4876 wrote to memory of 1588	4876	rundll32.exe	107
PID 4876 wrote to memory of 1588	4876	rundll32.exe	107

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmpzttslrfj.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:332
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmpzttslrfj.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4876
- - 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:1588

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/1588-7-0x0000000000730000-0x000000000075B000-memory.dmp

Download

memory/1588-11-0x0000000000730000-0x000000000075B000-memory.dmp

Download

memory/1588-12-0x0000000000730000-0x000000000075B000-memory.dmp

Download

memory/4876-1-0x000000001005D000-0x0000000010060000-memory.dmp

Download

memory/4876-2-0x0000000010000000-0x000000001017B000-memory.dmp

Download

memory/4876-3-0x0000000010000000-0x000000001017B000-memory.dmp

Download

memory/4876-9-0x0000000010000000-0x000000001017B000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads