zloader | fa240d61efeb769d33cc081f2086ae6b65cda847a80440c82d97867fd1fbd6ab

General

Target

zte(1).dll
Size

473KB
MD5

13b3e008d5b8996c34a9247fbc412aa9
SHA1

6bcfb4f6385a4a78d39514763ed203ec7d4dc59f
SHA256

fa240d61efeb769d33cc081f2086ae6b65cda847a80440c82d97867fd1fbd6ab
SHA512

ee79fcdec5d4365a4a1d43cd60245917ac3a4128149d7c9666bccad7466e46d111d2c2901988643a835e2681011319909626d7f37dc12b3b6cbd20fa5b1efe30

Score

10^/10

zloader bot5 bot5 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

bot5

Campaign

bot5

C2

https://militanttra.at/owg.php

rc4.plain

rsa_pubkey.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\Mofosu = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Niiqid\\yrenzys.dll"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1300 set thread context of 544 1300 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 544 msiexec.exe
Token: SeSecurityPrivilege 544 msiexec.exe

description	pid	process	target process
PID 1300 set thread context of 544	1300	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	544	msiexec.exe
Token: SeSecurityPrivilege	544	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2012 wrote to memory of 1300	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1300	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1300	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1300	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1300	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1300	2012	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1300	2012	rundll32.exe	rundll32.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe
PID 1300 wrote to memory of 544	1300	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zte(1).dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2012

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\zte(1).dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1300

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:544

Network

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/544-1-0x0000000000090000-0x00000000000BB000-memory.dmp

Filesize
172KB

Download
memory/544-2-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/544-3-0x0000000000090000-0x00000000000BB000-memory.dmp

Filesize
172KB

Download
memory/544-4-0x0000000000000000-mapping.dmp

Download
memory/1056-5-0x000007FEF7B20000-0x000007FEF7D9A000-memory.dmp

Filesize
2.5MB

Download
memory/1300-0-0x0000000000000000-mapping.dmp

Download

Analysis

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