zloader | 5b831fb067dfb53992bb8a346e4fc038de6441a94ad5a3932dc8bd64f80e56fc

General

Target

hallway.dll
Size

275KB
MD5

847ea7a7e9c3c6da5c3602a79bf7fb0b
SHA1

67537586d23f59a1fae91f90da6026d2920945d7
SHA256

5b831fb067dfb53992bb8a346e4fc038de6441a94ad5a3932dc8bd64f80e56fc
SHA512

b5f5bad180b478dcda2cd870de0499f0c9891157dd6ad8c2120e422856215138a0ce0b0e8eda065a6852992a8675c0af3f856584b32b946cf020f69e4b537480

Score

10^/10

trojan botnet zloader persistence

Malware Config

Extracted

Family

zloader

Botnet

main

Campaign

2020-07-01

C2

https://findulz.com/web/data

https://fredoam.com/web/data

https://cheneer.org/web/data

https://esplody.org/web/data

https://orderrys.com/web/data

https://paiancil.com/web/data

https://procinul.com/web/data

https://cupersip.com/web/data

rc4.plain

rsa_pubkey.plain

Signatures

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

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-1-5-21-1231583446-2617009595-2137880041-1000\Software\Microsoft\Windows\CurrentVersion\Run\Leihda = "regsvr32.exe /s C:\\Users\\Admin\\AppData\\Roaming\\Ilac\\ceiqyh.dll"	msiexec.exe
Key created	\REGISTRY\USER\S-1-5-21-1231583446-2617009595-2137880041-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1068 set thread context of 2504 1068 rundll32.exe msiexec.exe
Drops file in Windows directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\win.ini rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 2504 msiexec.exe
Token: SeSecurityPrivilege 2504 msiexec.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

rundll32.exe

pid process

1068 rundll32.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

rundll32.exe

pid process

1068 rundll32.exe

description	pid	process	target process
PID 1068 set thread context of 2504	1068	rundll32.exe	msiexec.exe

description	ioc	process
File opened for modification	C:\Windows\win.ini	rundll32.exe

description	pid	process
Token: SeSecurityPrivilege	2504	msiexec.exe
Token: SeSecurityPrivilege	2504	msiexec.exe

pid	process
1068	rundll32.exe

pid	process
1068	rundll32.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4060 wrote to memory of 1068	4060	rundll32.exe	rundll32.exe
PID 4060 wrote to memory of 1068	4060	rundll32.exe	rundll32.exe
PID 4060 wrote to memory of 1068	4060	rundll32.exe	rundll32.exe
PID 1068 wrote to memory of 2504	1068	rundll32.exe	msiexec.exe
PID 1068 wrote to memory of 2504	1068	rundll32.exe	msiexec.exe
PID 1068 wrote to memory of 2504	1068	rundll32.exe	msiexec.exe
PID 1068 wrote to memory of 2504	1068	rundll32.exe	msiexec.exe
PID 1068 wrote to memory of 2504	1068	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\hallway.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4060

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\hallway.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1068

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2504

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/1068-0-0x0000000000000000-mapping.dmp

Download
memory/2504-1-0x0000000000B60000-0x0000000000B8C000-memory.dmp

Filesize
176KB

Download
memory/2504-2-0x0000000000000000-mapping.dmp

Download

Analysis

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