Malware Analysis Report

2024-10-18 22:50

Sample ID 221027-hckg2abcd8
Target 4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked
SHA256 4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8
Tags
zloader botnet persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8

Threat Level: Known bad

The file 4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked was found to be: Known bad.

Malicious Activity Summary

zloader botnet persistence trojan

Zloader family

Zloader, Terdot, DELoader, ZeusSphinx

Blocklisted process makes network request

Adds Run key to start application

Suspicious use of SetThreadContext

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-10-27 06:35

Signatures

Zloader family

zloader

Analysis: behavioral2

Detonation Overview

Submitted

2022-10-27 06:35

Reported

2022-10-27 06:52

Platform

win10v2004-20220901-en

Max time kernel

496s

Max time network

504s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe"

Signatures

Zloader, Terdot, DELoader, ZeusSphinx

trojan botnet zloader

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\msiexec.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Efbu = "C:\\Users\\Admin\\AppData\\Roaming\\Obbi\\fobibie.exe" C:\Windows\SysWOW64\msiexec.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 372 set thread context of 1884 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\msiexec.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\msiexec.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe

"C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe"

C:\Windows\SysWOW64\msiexec.exe

msiexec.exe

Network

Country Destination Domain Proto
US 20.42.65.84:443 tcp
US 45.72.3.132:443 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 93.184.221.240:80 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
NL 104.80.229.204:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp

Files

memory/1884-132-0x0000000000000000-mapping.dmp

memory/1884-133-0x0000000001000000-0x0000000001029000-memory.dmp

memory/1884-134-0x0000000001000000-0x0000000001029000-memory.dmp

memory/1884-135-0x0000000001000000-0x0000000001029000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2022-10-27 06:35

Reported

2022-10-27 06:51

Platform

win7-20220812-en

Max time kernel

566s

Max time network

567s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe"

Signatures

Zloader, Terdot, DELoader, ZeusSphinx

trojan botnet zloader

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\SysWOW64\msiexec.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ecdaahg = "C:\\Users\\Admin\\AppData\\Roaming\\Ebeg\\agufad.exe" C:\Windows\SysWOW64\msiexec.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 768 set thread context of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\msiexec.exe N/A
Token: SeSecurityPrivilege N/A C:\Windows\SysWOW64\msiexec.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe
PID 768 wrote to memory of 1948 N/A C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe C:\Windows\SysWOW64\msiexec.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe

"C:\Users\Admin\AppData\Local\Temp\4afd18322fa314a305c50129c89764ca9f54238c5e89d86a4a312398e8e56ca8_unpacked.exe"

C:\Windows\SysWOW64\msiexec.exe

msiexec.exe

Network

Country Destination Domain Proto
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp
US 45.72.3.132:443 tcp

Files

memory/768-54-0x0000000076871000-0x0000000076873000-memory.dmp

memory/1948-55-0x0000000000090000-0x00000000000B9000-memory.dmp

memory/1948-57-0x0000000000090000-0x00000000000B9000-memory.dmp

memory/1948-58-0x0000000000000000-mapping.dmp

memory/1948-60-0x0000000000090000-0x00000000000B9000-memory.dmp

memory/1948-61-0x0000000000090000-0x00000000000B9000-memory.dmp