zloader | b4e0478cf85035852a664984f8639e98bee3b54d6530ef22d46874b14ad0e748

General

Target

tmp2.dll
Size

454KB
MD5

3d7ef38e63a73f1b0ca9a3a3ea39f491
SHA1

dba032764df1e3b6bff027183d69c642ef2b123c
SHA256

b4e0478cf85035852a664984f8639e98bee3b54d6530ef22d46874b14ad0e748
SHA512

0f162a402346bc036d4dd7b49b989bf0beb13cbf9ba7a5395f3486fae875726d863b3497de9cdd69947ce0e208e70859b9a069de4168fe8ea6c02b8b339da66b

Score

10^/10

zloader apr01 canada botnet persistence suricata trojan

Malware Config

Extracted

Family

zloader

Botnet

apr01

Campaign

Canada

C2

http://march262020.best/post.php

http://march262020.club/post.php

http://march262020.com/post.php

http://march262020.live/post.php

http://march262020.network/post.php

http://march262020.online/post.php

http://march262020.site/post.php

http://march262020.store/post.php

http://march262020.tech/post.php

rc4.plain

Signatures

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader
suricata: ET MALWARE Zbot POST Request to C2
suricata: ET MALWARE Zbot POST Request to C2
suricata
Blocklisted process makes network request 6 IoCs

Processes:

msiexec.exe

flow pid process

27 2152 msiexec.exe
28 2152 msiexec.exe
29 2152 msiexec.exe
30 2152 msiexec.exe
31 2152 msiexec.exe
32 2152 msiexec.exe

flow	pid	process
27	2152	msiexec.exe
28	2152	msiexec.exe
29	2152	msiexec.exe
30	2152	msiexec.exe
31	2152	msiexec.exe
32	2152	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-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rayvunug = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Wyaho\\ehxiki.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1964 set thread context of 2152 1964 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 2152 msiexec.exe
Token: SeSecurityPrivilege 2152 msiexec.exe

description	pid	process	target process
PID 1964 set thread context of 2152	1964	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	2152	msiexec.exe
Token: SeSecurityPrivilege	2152	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1828 wrote to memory of 1964	1828	rundll32.exe	rundll32.exe
PID 1828 wrote to memory of 1964	1828	rundll32.exe	rundll32.exe
PID 1828 wrote to memory of 1964	1828	rundll32.exe	rundll32.exe
PID 1964 wrote to memory of 2152	1964	rundll32.exe	msiexec.exe
PID 1964 wrote to memory of 2152	1964	rundll32.exe	msiexec.exe
PID 1964 wrote to memory of 2152	1964	rundll32.exe	msiexec.exe
PID 1964 wrote to memory of 2152	1964	rundll32.exe	msiexec.exe
PID 1964 wrote to memory of 2152	1964	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmp2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1828

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\tmp2.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1964

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2152

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/1964-115-0x0000000000000000-mapping.dmp

Download
memory/1964-116-0x00000000734D0000-0x0000000073500000-memory.dmp

Filesize
192KB

Download
memory/1964-117-0x00000000734D0000-0x0000000073559000-memory.dmp

Filesize
548KB

Download
memory/1964-118-0x0000000001000000-0x00000000010AE000-memory.dmp

Filesize
696KB

Download
memory/2152-119-0x0000000000000000-mapping.dmp

Download
memory/2152-122-0x0000000003030000-0x0000000003060000-memory.dmp

Filesize
192KB

Download

Analysis

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