zloader | 28e752ad86f8f53773bb2e147c1366f5e82b5a8fd2cd80af065decea2e11f694

Target

zloader 2_1.0.4.0.vir.dll
Size

300KB
MD5

81baef090e5c513c1598c348d072ce96
SHA1

d5795f51ec36ee0dabd073f694692e2aa507a04a
SHA256

28e752ad86f8f53773bb2e147c1366f5e82b5a8fd2cd80af065decea2e11f694
SHA512

699b797857f33e6937b2655418509d63d87fe18bd790d94c31a611d45b322aa2923d8be1c1df3e8c66ea7e78b93b693f7f366a38eb6b6ea6a4016a1364665520

Score

10^/10

trojan botnet zloader persistence

Malware Config

Extracted

Family

zloader

Botnet

Campaign

http://far.spargroarr.org/tv/x.php

http://roo.purcererya.org/tv/x.php

rc4.plain

Signatures

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 240 wrote to memory of 1020	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1020	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1020	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1020	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1020	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1020	240	rundll32.exe	rundll32.exe
PID 240 wrote to memory of 1020	240	rundll32.exe	rundll32.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe
PID 1020 wrote to memory of 1820	1020	rundll32.exe	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1020 set thread context of 1820 1020 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1820 msiexec.exe
Token: SeSecurityPrivilege 1820 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 1020 set thread context of 1820	1020	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1820	msiexec.exe
Token: SeSecurityPrivilege	1820	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\Cocigady = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Ycgo\\beybaggo.dll,DllRegisterServer"	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.4.0.vir.dll",#1
1⤵
- Suspicious use of WriteProcessMemory
PID:240

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.4.0.vir.dll",#1
2⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of SetThreadContext
PID:1020

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Suspicious use of AdjustPrivilegeToken
- Adds Run key to start application
PID:1820

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1020-0-0x0000000000000000-mapping.dmp

Download
memory/1820-1-0x00000000000D0000-0x00000000000F9000-memory.dmp

Filesize
164KB

Download
memory/1820-2-0x0000000000100000-0x0000000000101000-memory.dmp

Filesize
4KB

Download
memory/1820-3-0x00000000000D0000-0x00000000000F9000-memory.dmp

Filesize
164KB

Download
memory/1820-4-0x0000000000000000-mapping.dmp

Download