zloader | 38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

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01/03/2025, 18:58

250301-xmhhrayp15 10

01/03/2025, 18:55

250301-xkqrcaypx7 10

Analysis

max time kernel
90s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2024, 19:31

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General

Target

str.dll
Size

536KB
MD5

bfd5e43617896f082948b3fcbc4839f8
SHA1

0304d3a521a791359b16813df513feb891167e5a
SHA256

467ea1ab80fb43e2d59cdf16480ed80d0edd43a3a0baa4748300be7024d2b92e
SHA512

ec7392577b8f67f6e248b81b6d8d1333d7a15c9b7b957862b4b7c39e59e7b2849ad026850b78fd629f31a5e2287702a0a1486335d7f7f3dc356861cdf5056ab1
SSDEEP

12288:0bLgn0PC6NT4OhLPkjXhgECrfobaQsdqO76Qa+OCQkkkkkksk0vk2kkvBrZupk9J:0bNqCTrIzhb0omQsqO7mSuZBk

Score

10^/10

zloader bot5 bot5 botnet discovery 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

Zloader family
zloader
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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Ciavy = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Dauxp\\ykceuzx.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 3596	2264	rundll32.exe	97

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	3596	msiexec.exe
Token: SeSecurityPrivilege	3596	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 2264	2780	rundll32.exe	82
PID 2780 wrote to memory of 2264	2780	rundll32.exe	82
PID 2780 wrote to memory of 2264	2780	rundll32.exe	82
PID 2264 wrote to memory of 3596	2264	rundll32.exe	97
PID 2264 wrote to memory of 3596	2264	rundll32.exe	97
PID 2264 wrote to memory of 3596	2264	rundll32.exe	97
PID 2264 wrote to memory of 3596	2264	rundll32.exe	97
PID 2264 wrote to memory of 3596	2264	rundll32.exe	97

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\str.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\str.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2264
- - 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:3596

Network

MITRE ATT&CK Enterprise v15

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/2264-0-0x0000000074B72000-0x0000000074B75000-memory.dmp

Filesize
12KB

Download
memory/2264-2-0x0000000074B10000-0x0000000074B9B000-memory.dmp

Filesize
556KB

Download
memory/2264-1-0x0000000074B10000-0x0000000074B9B000-memory.dmp

Filesize
556KB

Download
memory/2264-3-0x0000000074B10000-0x0000000074B9B000-memory.dmp

Filesize
556KB

Download
memory/2264-4-0x0000000074B72000-0x0000000074B75000-memory.dmp

Filesize
12KB

Download
memory/2264-9-0x0000000074B10000-0x0000000074B9B000-memory.dmp

Filesize
556KB

Download
memory/3596-7-0x00000000005A0000-0x00000000005CB000-memory.dmp

Filesize
172KB

Download
memory/3596-11-0x00000000005A0000-0x00000000005CB000-memory.dmp

Filesize
172KB

Download
memory/3596-12-0x00000000005A0000-0x00000000005CB000-memory.dmp

Filesize
172KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads