zloader | c4f3e1c36ef734927967d40bba87fc620abe5c5049b0e67fd3cc3dab9c763c7a

General

Target

zloader 2_1.1.21.0.vir.dll
Size

170KB
MD5

3718fe99f772c81aa908369cd7279eac
SHA1

34f02fba4e619d718b69bec2152a75683fa6a3c8
SHA256

c4f3e1c36ef734927967d40bba87fc620abe5c5049b0e67fd3cc3dab9c763c7a
SHA512

a86468e74665e1b26cb3233a84e4eae4c950b7c6ab24bd680c0da836cb8691eeae6b92dd8c603c1e03fcfc1c9c11f8a277b99a1d0d0b5e188ea03db4fc68df2c

Score

10^/10

persistence trojan botnet zloader

Malware Config

Extracted

Family

zloader

Botnet

goldhub

Campaign

18.03.2020

C2

https://105711.com/docs.php

https://209711.com/process.php

https://106311.com/comegetsome.php

https://124331.com/success.php

rc4.plain

Signatures

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1296 wrote to memory of 868	1296	rundll32.exe	rundll32.exe
PID 1296 wrote to memory of 868	1296	rundll32.exe	rundll32.exe
PID 1296 wrote to memory of 868	1296	rundll32.exe	rundll32.exe
PID 1296 wrote to memory of 868	1296	rundll32.exe	rundll32.exe
PID 1296 wrote to memory of 868	1296	rundll32.exe	rundll32.exe
PID 1296 wrote to memory of 868	1296	rundll32.exe	rundll32.exe
PID 1296 wrote to memory of 868	1296	rundll32.exe	rundll32.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe
PID 868 wrote to memory of 1332	868	rundll32.exe	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 868 set thread context of 1332 868 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1332 msiexec.exe
Token: SeSecurityPrivilege 1332 msiexec.exe

description	pid	process	target process
PID 868 set thread context of 1332	868	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1332	msiexec.exe
Token: SeSecurityPrivilege	1332	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\Pubo = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Ebvale\\hytuymtu.dll,DllRegisterServer"	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.1.21.0.vir.dll",#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1296

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.1.21.0.vir.dll",#1
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:868

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Suspicious use of AdjustPrivilegeToken
- Adds Run key to start application
PID:1332

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/868-0-0x0000000000000000-mapping.dmp

Download
memory/1332-1-0x00000000000D0000-0x0000000000100000-memory.dmp

Filesize
192KB

Download
memory/1332-2-0x0000000000100000-0x0000000000101000-memory.dmp

Filesize
4KB

Download
memory/1332-3-0x00000000000D0000-0x0000000000100000-memory.dmp

Filesize
192KB

Download
memory/1332-4-0x0000000000000000-mapping.dmp

Download

Analysis

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