Malware Analysis Report

2024-11-13 18:33

Sample ID 231024-mg376aea52
Target opzkjztnty.zip
SHA256 27f16f3e0ae8499d98a9b7537ff2619d54bc8a7d8350f3f547521eb5b39bdb6b
Tags
discovery strrat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

27f16f3e0ae8499d98a9b7537ff2619d54bc8a7d8350f3f547521eb5b39bdb6b

Threat Level: Known bad

The file opzkjztnty.zip was found to be: Known bad.

Malicious Activity Summary

discovery strrat

Strrat family

Modifies file permissions

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-24 10:27

Signatures

Strrat family

strrat

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-24 10:27

Reported

2023-10-24 10:29

Platform

win7-20231020-en

Max time kernel

146s

Max time network

141s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\opzkjztnty.jar

Signatures

N/A

Processes

C:\Windows\system32\java.exe

java -jar C:\Users\Admin\AppData\Local\Temp\opzkjztnty.jar

Network

Country Destination Domain Proto
US 8.8.8.8:53 github.com udp
US 8.8.8.8:53 repo1.maven.org udp
US 199.232.192.209:443 repo1.maven.org tcp
DE 140.82.121.4:443 github.com tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
DE 140.82.121.4:443 github.com tcp
US 8.8.8.8:53 github.com udp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp

Files

memory/2872-9-0x0000000002220000-0x0000000005220000-memory.dmp

memory/2872-10-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-17-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-20-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-21-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-27-0x0000000002220000-0x0000000005220000-memory.dmp

memory/2872-30-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-32-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-34-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-35-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-36-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-44-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-47-0x00000000004C0000-0x00000000004C1000-memory.dmp

memory/2872-46-0x00000000004C0000-0x00000000004C1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-24 10:27

Reported

2023-10-24 10:29

Platform

win10v2004-20231023-en

Max time kernel

147s

Max time network

154s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\opzkjztnty.jar

Signatures

Modifies file permissions

discovery
Description Indicator Process Target
N/A N/A C:\Windows\system32\icacls.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2884 wrote to memory of 2972 N/A C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe C:\Windows\system32\icacls.exe
PID 2884 wrote to memory of 2972 N/A C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe C:\Windows\system32\icacls.exe

Processes

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe

java -jar C:\Users\Admin\AppData\Local\Temp\opzkjztnty.jar

C:\Windows\system32\icacls.exe

C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 repo1.maven.org udp
US 8.8.8.8:53 github.com udp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
DE 140.82.121.4:443 github.com tcp
US 8.8.8.8:53 209.192.232.199.in-addr.arpa udp
US 8.8.8.8:53 4.121.82.140.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 repo1.maven.org udp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 8.8.8.8:53 objects.githubusercontent.com udp
US 185.199.108.133:443 objects.githubusercontent.com tcp
US 8.8.8.8:53 133.108.199.185.in-addr.arpa udp

Files

memory/2884-4-0x000001E8F0BC0000-0x000001E8F1BC0000-memory.dmp

C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

MD5 6b6b508f011a34e41be55f0d464d77af
SHA1 f9fde1b5203a3aeab1d1eb7300eee2c1ac049872
SHA256 8ce9f3c026c8a1bdb2aba468b915848f8d47046940f78e9cb17342b89a32981e
SHA512 784ca9ebcafc90eace613263fe98534df3751ae55777417bed56ae4d4f69ead73c510bfc1c7633310ac832d8ca72ea3a5089c91b5270c6b78f8449be7da3ceb7

memory/2884-12-0x000001E8EF310000-0x000001E8EF311000-memory.dmp

memory/2884-17-0x000001E8F0BC0000-0x000001E8F1BC0000-memory.dmp

memory/2884-33-0x000001E8F0BC0000-0x000001E8F1BC0000-memory.dmp

memory/2884-40-0x000001E8EF310000-0x000001E8EF311000-memory.dmp

memory/2884-48-0x000001E8F0BC0000-0x000001E8F1BC0000-memory.dmp

memory/2884-51-0x000001E8EF310000-0x000001E8EF311000-memory.dmp

memory/2884-56-0x000001E8EF310000-0x000001E8EF311000-memory.dmp

memory/2884-58-0x000001E8F0BC0000-0x000001E8F1BC0000-memory.dmp

memory/2884-67-0x000001E8F0BC0000-0x000001E8F1BC0000-memory.dmp

memory/2884-76-0x000001E8EF310000-0x000001E8EF311000-memory.dmp

memory/2884-164-0x000001E8F0BC0000-0x000001E8F1BC0000-memory.dmp

memory/2884-171-0x000001E8F0BC0000-0x000001E8F1BC0000-memory.dmp