zloader | 28e752ad86f8f53773bb2e147c1366f5e82b5a8fd2cd80af065decea2e11f694

Resubmissions

21-02-2024 18:00

240221-wld89scg8t 10

17-11-2023 10:12

231117-l8q68shg51 10

19-07-2020 17:30

200719-e49qpwlak6 10

Analysis

max time kernel
563s
max time network
571s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 18:00

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Report Analysis Logs

General

Target

zloader 2_1.0.4.0.dll
Size

300KB
MD5

81baef090e5c513c1598c348d072ce96
SHA1

d5795f51ec36ee0dabd073f694692e2aa507a04a
SHA256

28e752ad86f8f53773bb2e147c1366f5e82b5a8fd2cd80af065decea2e11f694
SHA512

699b797857f33e6937b2655418509d63d87fe18bd790d94c31a611d45b322aa2923d8be1c1df3e8c66ea7e78b93b693f7f366a38eb6b6ea6a4016a1364665520
SSDEEP

6144:ODRRTytCG2AD+dMLtfbPM+jf5nde+zDbf+qk7w:zCG2AKdMDPMMff+qkk

Score

10^/10

zloader 19 botnet persistence trojan

Malware Config

Extracted

Family

zloader

Botnet

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

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

Attributes

build_id
842086448

rc4.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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3538781373-1545967067-4263767959-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Doacfigo = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Ybufo\\addyyby.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 4896 set thread context of 4604 4896 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 4604 msiexec.exe
Token: SeSecurityPrivilege 4604 msiexec.exe

description	pid	process	target process
PID 4896 set thread context of 4604	4896	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	4604	msiexec.exe
Token: SeSecurityPrivilege	4604	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3188 wrote to memory of 4896	3188	rundll32.exe	rundll32.exe
PID 3188 wrote to memory of 4896	3188	rundll32.exe	rundll32.exe
PID 3188 wrote to memory of 4896	3188	rundll32.exe	rundll32.exe
PID 4896 wrote to memory of 4604	4896	rundll32.exe	msiexec.exe
PID 4896 wrote to memory of 4604	4896	rundll32.exe	msiexec.exe
PID 4896 wrote to memory of 4604	4896	rundll32.exe	msiexec.exe
PID 4896 wrote to memory of 4604	4896	rundll32.exe	msiexec.exe
PID 4896 wrote to memory of 4604	4896	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.4.0.dll",#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3188

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\zloader 2_1.0.4.0.dll",#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4896

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:4604

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

memory/4604-6-0x00000000012B0000-0x00000000012D9000-memory.dmp

Filesize
164KB

Download
memory/4896-0-0x0000000002430000-0x0000000002D80000-memory.dmp

Filesize
9.3MB

Download
memory/4896-2-0x0000000002430000-0x0000000002D80000-memory.dmp

Filesize
9.3MB

Download
memory/4896-3-0x0000000000780000-0x0000000000781000-memory.dmp

Filesize
4KB

Download
memory/4896-4-0x0000000002430000-0x0000000002D80000-memory.dmp

Filesize
9.3MB

Download
memory/4896-5-0x0000000002430000-0x0000000002D80000-memory.dmp

Filesize
9.3MB

Download
memory/4896-7-0x0000000002430000-0x0000000002D80000-memory.dmp

Filesize
9.3MB

Download