zloader | 14d333f6817a40cc66251901b630df311dc518be513f3be9e4fc308ab7ff562d

General

Target

14d333f6817a40cc66251901b630df311dc518be513f3be9e4fc308ab7ff562d.vbs
Size

1.5MB
MD5

0d59d38d2ec5c6aa8b14e1ab7e7f0c5c
SHA1

a587242db9200982a8a9d8308ce4c020020c6264
SHA256

14d333f6817a40cc66251901b630df311dc518be513f3be9e4fc308ab7ff562d
SHA512

c5f3247cd102d290df14860a73b2c1ffd666b9bb89a0afc35b54d004ef6e87b9455c48b46ed8a9c494293b1362156934afd27a543fd76b95dca97d99df0e6c54

Score

10^/10

zloader main 19.04.2020 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

main

Campaign

19.04.2020

C2

https://spardanos.com/sound.php

https://lonehee.com/sound.php

https://surgued.com/sound.php

https://tremood.com/sound.php

https://soceneo.com/sound.php

https://baatiot.com/sound.php

https://welefus.com/sound.php

https://maremeo.com/sound.php

Attributes

build_id
39

rc4.plain

Signatures

Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description pid pid_target process target process

Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1720 1428 rundll32.exe
Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

1888 rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1720	1428	rundll32.exe

pid	process
1888	rundll32.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-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\Faovfu = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Epmi\\qiuxcec.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1888 set thread context of 1388 1888 rundll32.exe msiexec.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1388 msiexec.exe
Token: SeSecurityPrivilege 1388 msiexec.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

WScript.exe

pid process

1628 WScript.exe

description	pid	process	target process
PID 1888 set thread context of 1388	1888	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1388	msiexec.exe
Token: SeSecurityPrivilege	1388	msiexec.exe

pid	process
1628	WScript.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1720 wrote to memory of 1888	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1888	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1888	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1888	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1888	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1888	1720	rundll32.exe	rundll32.exe
PID 1720 wrote to memory of 1888	1720	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe
PID 1888 wrote to memory of 1388	1888	rundll32.exe	msiexec.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\14d333f6817a40cc66251901b630df311dc518be513f3be9e4fc308ab7ff562d.vbs"
1⤵
- Suspicious use of FindShellTrayWindow
PID:1628

C:\Windows\system32\rundll32.exe
rundll32 C:\Users\Admin\AppData\Local\Temp\MdXOYcXZkheUMIO.txt,DllRegisterServer
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1720

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Admin\AppData\Local\Temp\MdXOYcXZkheUMIO.txt,DllRegisterServer
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:1388

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\MdXOYcXZkheUMIO.txt
MD5
bba9ace9dc7cce4cac9439a43fa4c9a0

SHA1
8a66109684bfb149ae5f59adaceb380b040f1afc

SHA256
e62889be5bf912d37044d83aab08dfa85c7863ec9baeac93e0397e03a407f95a

SHA512
49ab85bd8272bb8e54b93cb899af72cfaf169b0db39ac334d60e2e13daa1c393e6e7e563d308d002b9e9724a51740f6a860176885afcc1473fa9a04587134d82

Download Submit
\Users\Admin\AppData\Local\Temp\MdXOYcXZkheUMIO.txt
MD5
bba9ace9dc7cce4cac9439a43fa4c9a0

SHA1
8a66109684bfb149ae5f59adaceb380b040f1afc

SHA256
e62889be5bf912d37044d83aab08dfa85c7863ec9baeac93e0397e03a407f95a

SHA512
49ab85bd8272bb8e54b93cb899af72cfaf169b0db39ac334d60e2e13daa1c393e6e7e563d308d002b9e9724a51740f6a860176885afcc1473fa9a04587134d82

Download Submit
memory/1388-62-0x00000000000D0000-0x00000000000D1000-memory.dmp

Filesize
4KB

Download
memory/1388-61-0x0000000000090000-0x00000000000C2000-memory.dmp

Filesize
200KB

Download
memory/1388-63-0x0000000000090000-0x00000000000C2000-memory.dmp

Filesize
200KB

Download
memory/1388-65-0x0000000000090000-0x00000000000C2000-memory.dmp

Filesize
200KB

Download
memory/1628-54-0x000007FEFB711000-0x000007FEFB713000-memory.dmp

Filesize
8KB

Download
memory/1628-55-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/1888-57-0x0000000075D61000-0x0000000075D63000-memory.dmp

Filesize
8KB

Download
memory/1888-59-0x00000000001A0000-0x00000000001F8000-memory.dmp

Filesize
352KB

Download
memory/1888-60-0x0000000010000000-0x00000000100E7000-memory.dmp

Filesize
924KB

Download

Analysis

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