zloader | dbeba2fb33aaba42768a5ed8055cc8ca4009ad1921319f90c78b78d4f0dd9f7b

Analysis

max time kernel
149s
max time network
148s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
22/05/2026, 17:52

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General

Target
tmpiizcgcww.dll
Size 489KB
Sample260522-wf87fscs4m
SHA256 dbeba2fb33aaba42768a5ed8055cc8ca4009ad1921319f90c78b78d4f0dd9f7b
MD5 8c293fe05b3af514723a1639810c06a3
SHA1 ac2f7668c7f3049930b52a83585ac479145cd059
SHA512 2f8db26e93c54b08944a4080e55595f348090086f849fe427f6f07b17a8a57926b1e0d6481356feb0846af0c01ffbb06122750974d3f80e2ea3c465aab1acc23
SSDEEP 6144:JQL/CxaPfEDAat201QjWS1weuSMveVva7u0wugLVghTRcWVHaLhU+7bd8AoovvQ5:Ju6uEDr40M6euSMvewSSaGY2ZsYiW
TLSH
T139B48EE037700A86F9FB4F3C48B3472199ED7CCA9931C28597D1774A1D7B2825A64F2A
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-1-5-21-1679180529-4058988202-686829476-1000\Software\Microsoft\Windows\CurrentVersion\Run\Umoxlixo = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Guorra\\ucupwei.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2612 set thread context of 1520	2612	rundll32.exe	82

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	1520	msiexec.exe
Token: SeSecurityPrivilege	1520	msiexec.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 2612	1248	rundll32.exe	81
PID 2612 wrote to memory of 1520	2612	rundll32.exe	82
PID 2612 wrote to memory of 1520	2612	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmpiizcgcww.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmpiizcgcww.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2612
- - 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:1520

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/1520-8-0x0000000000F20000-0x0000000000F4B000-memory.dmp

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memory/1520-12-0x0000000000F20000-0x0000000000F4B000-memory.dmp

Download

memory/1520-13-0x0000000000F20000-0x0000000000F4B000-memory.dmp

Download

memory/2612-0-0x0000000074FF6000-0x0000000074FF9000-memory.dmp

Download

memory/2612-1-0x0000000074F80000-0x0000000075000000-memory.dmp

Download

memory/2612-2-0x0000000074F80000-0x0000000075000000-memory.dmp

Download

memory/2612-3-0x0000000074F80000-0x0000000075000000-memory.dmp

Download

memory/2612-4-0x0000000074FF6000-0x0000000074FF9000-memory.dmp

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memory/2612-10-0x0000000074F80000-0x0000000075000000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads