zloader | 38115c7bdc10cc2981e9ab126d98f5ccab66a4d4d787b90a704ba3823b07fb67

General

Target

zloader 2_1.0.18.0.vir.dll
Size

448KB
MD5

a233e89a46b954cd46e6d543b96fd884
SHA1

de323c3e4f362739cc6cf0a9989fbde6633d3bd5
SHA256

38115c7bdc10cc2981e9ab126d98f5ccab66a4d4d787b90a704ba3823b07fb67
SHA512

1bd3263c02060ec4444c07522610a440a16a5af1fde63edc0b9cf8564083abd812dab136c944f7a121f507a06413986e879cfe4c1cd5a7596143bf394a6aed84

Score

10^/10

trojan botnet zloader persistence

Malware Config

Extracted

Family

zloader

Botnet

24/02

Campaign

https://soficatan.site/milagrecf.php

C2

https://barbeyo.xyz/milagrecf.php

rc4.plain

Signatures

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1388 wrote to memory of 1444	1388	rundll32.exe	rundll32.exe
PID 1388 wrote to memory of 1444	1388	rundll32.exe	rundll32.exe
PID 1388 wrote to memory of 1444	1388	rundll32.exe	rundll32.exe
PID 1388 wrote to memory of 1444	1388	rundll32.exe	rundll32.exe
PID 1388 wrote to memory of 1444	1388	rundll32.exe	rundll32.exe
PID 1388 wrote to memory of 1444	1388	rundll32.exe	rundll32.exe
PID 1388 wrote to memory of 1444	1388	rundll32.exe	rundll32.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe
PID 1444 wrote to memory of 1816	1444	rundll32.exe	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1444 set thread context of 1816 1444 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1816 msiexec.exe
Token: SeSecurityPrivilege 1816 msiexec.exe
Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

description	pid	process	target process
PID 1444 set thread context of 1816	1444	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1816	msiexec.exe
Token: SeSecurityPrivilege	1816	msiexec.exe

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-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ubybo = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Addohu\\guyc.dll,DllRegisterServer"	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.18.0.vir.dll",#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1388

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.18.0.vir.dll",#1
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:1444

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Suspicious use of AdjustPrivilegeToken
- Adds Run key to start application
PID:1816

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/1444-0-0x0000000000000000-mapping.dmp

Download
memory/1816-1-0x0000000000090000-0x00000000000B5000-memory.dmp

Filesize
148KB

Download
memory/1816-2-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1816-3-0x0000000000090000-0x00000000000B5000-memory.dmp

Filesize
148KB

Download
memory/1816-4-0x0000000000000000-mapping.dmp

Download

Analysis

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