zloader | ec9668cae1c65020021d2c633b68286944f1e6b1ddf5183d40ef823607e29cba

General

Target

zloader 2_1.1.19.0.vir.dll
Size

280KB
MD5

06cbf262293eb6689ce5d2e61c494f7a
SHA1

46ddf35b6ad2596d0fc666701fac599bc1f7b534
SHA256

ec9668cae1c65020021d2c633b68286944f1e6b1ddf5183d40ef823607e29cba
SHA512

375bf59d11e89955315deb1b2d36d16776dbbde2c5cab5ca2fe0d5f049aa30bac00643222a200126eb9a93a5e66e13b8ec39e29c2abbc356db8d301f1bb0768a

Score

10^/10

trojan botnet zloader persistence

Malware Config

Extracted

Family

zloader

Botnet

10/03

Campaign

https://dhteijwrb.host/milagrecf.php

C2

https://aquolepp.pw/milagrecf.php

rc4.plain

Signatures

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1292 set thread context of 1344 1292 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1344 msiexec.exe
Token: SeSecurityPrivilege 1344 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 1292 set thread context of 1344	1292	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1344	msiexec.exe
Token: SeSecurityPrivilege	1344	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
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\Aqop = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Iwiw\\oherz.dll,DllRegisterServer"	msiexec.exe
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 828 wrote to memory of 1292	828	rundll32.exe	rundll32.exe
PID 828 wrote to memory of 1292	828	rundll32.exe	rundll32.exe
PID 828 wrote to memory of 1292	828	rundll32.exe	rundll32.exe
PID 828 wrote to memory of 1292	828	rundll32.exe	rundll32.exe
PID 828 wrote to memory of 1292	828	rundll32.exe	rundll32.exe
PID 828 wrote to memory of 1292	828	rundll32.exe	rundll32.exe
PID 828 wrote to memory of 1292	828	rundll32.exe	rundll32.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe
PID 1292 wrote to memory of 1344	1292	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.1.19.0.vir.dll",#1
1⤵
- Suspicious use of WriteProcessMemory
PID:828

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.1.19.0.vir.dll",#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1292

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Suspicious use of AdjustPrivilegeToken
- Adds Run key to start application
PID:1344

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/1292-0-0x0000000000000000-mapping.dmp

Download
memory/1344-1-0x0000000000090000-0x00000000000C0000-memory.dmp

Filesize
192KB

Download
memory/1344-2-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1344-3-0x0000000000090000-0x00000000000C0000-memory.dmp

Filesize
192KB

Download
memory/1344-4-0x0000000000000000-mapping.dmp

Download

Analysis

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