zloader | c6d67ee0a72942ae1cfc53e7c7267814c46a47e8ee9e1399a6b046dfedd360ed

General

Target

zuygy.dll
Size

863KB
MD5

f2f6fef7797832e67d7b0d0c3bf5b671
SHA1

c43c113ad5fd90a04f96b2188078ce372fd84859
SHA256

e3bcf059f0ad7b1c92462646e135623d3ce75addcd6a0d207b78e2fbfb6dac2d
SHA512

8a29c002cc8658a4753a35c00d426ce5703d4f008675fad158691a7ad63c764b668c4afe471f9645d91a863a1f1d5370aa96fdd1d79917b45838e89a084a5cc1

Score

10^/10

zloader main 02.04.2020 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

main

Campaign

02.04.2020

C2

https://klill.com/sound.php

https://geost.com/sound.php

https://tarsilh.com/sound.php

https://lildor.com/sound.php

https://imosey.com/sound.php

https://obeaf.com/sound.php

https://pheia.com/sound.php

https://smenard.com/sound.php

rc4.plain

Signatures

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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\Foqus = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Ebboa\\vayvydvi.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 368 set thread context of 1212 368 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1212 msiexec.exe
Token: SeSecurityPrivilege 1212 msiexec.exe

description	pid	process	target process
PID 368 set thread context of 1212	368	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1212	msiexec.exe
Token: SeSecurityPrivilege	1212	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1700 wrote to memory of 368	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 368	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 368	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 368	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 368	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 368	1700	rundll32.exe	rundll32.exe
PID 1700 wrote to memory of 368	1700	rundll32.exe	rundll32.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe
PID 368 wrote to memory of 1212	368	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zuygy.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zuygy.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:368

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:1212

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/368-0-0x0000000000000000-mapping.dmp

Download
memory/1212-2-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1212-1-0x0000000000090000-0x00000000000C0000-memory.dmp

Filesize
192KB

Download
memory/1212-3-0x0000000000090000-0x00000000000C0000-memory.dmp

Filesize
192KB

Download
memory/1212-4-0x0000000000000000-mapping.dmp

Download

Analysis

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