Malware Analysis Report

2024-11-13 18:32

Sample ID 240104-yh5yxsadf7
Target 41c176289fce610d62f725d77e3a7d01
SHA256 b8854611b04b7ff0269ba30bc535bc4ec583e639a4385818d80ef6ae9c16fb9d
Tags
strrat discovery
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

b8854611b04b7ff0269ba30bc535bc4ec583e639a4385818d80ef6ae9c16fb9d

Threat Level: Known bad

The file 41c176289fce610d62f725d77e3a7d01 was found to be: Known bad.

Malicious Activity Summary

strrat discovery

Strrat family

Modifies file permissions

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-04 19:48

Signatures

Strrat family

strrat

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-04 19:48

Reported

2024-01-04 19:50

Platform

win7-20231129-en

Max time kernel

142s

Max time network

150s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\41c176289fce610d62f725d77e3a7d01.jar

Signatures

N/A

Processes

C:\Windows\system32\java.exe

java -jar C:\Users\Admin\AppData\Local\Temp\41c176289fce610d62f725d77e3a7d01.jar

Network

Country Destination Domain Proto
US 8.8.8.8:53 repo1.maven.org udp
US 8.8.8.8:53 github.com udp
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
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
US 8.8.8.8:53 github.com udp
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

Files

memory/2372-6-0x00000000025A0000-0x00000000055A0000-memory.dmp

memory/2372-10-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-17-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-22-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-25-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-29-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-30-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-34-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-37-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-41-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-42-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-44-0x00000000025A0000-0x00000000055A0000-memory.dmp

memory/2372-54-0x0000000000250000-0x0000000000251000-memory.dmp

memory/2372-71-0x0000000000250000-0x0000000000251000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-04 19:48

Reported

2024-01-04 19:50

Platform

win10v2004-20231215-en

Max time kernel

147s

Max time network

150s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\41c176289fce610d62f725d77e3a7d01.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 2984 wrote to memory of 3200 N/A C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe C:\Windows\system32\icacls.exe
PID 2984 wrote to memory of 3200 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\41c176289fce610d62f725d77e3a7d01.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 19.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.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 140.82.121.3:443 github.com tcp
US 8.8.8.8:53 209.192.232.199.in-addr.arpa udp
US 8.8.8.8:53 3.121.82.140.in-addr.arpa udp
DE 140.82.121.3:443 github.com tcp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
DE 140.82.121.3:443 github.com tcp
DE 140.82.121.3:443 github.com tcp
US 8.8.8.8:53 repo1.maven.org udp

Files

memory/2984-4-0x00000247C9650000-0x00000247CA650000-memory.dmp

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

MD5 fc2b1e1b53b0ec7a7d696180ef47b893
SHA1 768b1d0ca6b7fb4c53fee2460c9b8591d112c0cc
SHA256 250e8cf2048257816c06e92e51c1e2ee88be30335d9548ddc7dcc4f6f226ad38
SHA512 59f78fde2e38ff69b75360bec03d954a7a773d73ee764a7fd8219bdf48f7982ac40d3637f7d803a32f4748b960e4433cb8bd850884d53bbc5d307f534e3c1af7

memory/2984-16-0x00000247C9650000-0x00000247CA650000-memory.dmp

memory/2984-18-0x00000247C7E80000-0x00000247C7E81000-memory.dmp

memory/2984-24-0x00000247C9650000-0x00000247CA650000-memory.dmp

memory/2984-36-0x00000247C9650000-0x00000247CA650000-memory.dmp

memory/2984-35-0x00000247C7E80000-0x00000247C7E81000-memory.dmp

memory/2984-41-0x00000247C9650000-0x00000247CA650000-memory.dmp

memory/2984-48-0x00000247C9650000-0x00000247CA650000-memory.dmp

memory/2984-50-0x00000247C7E80000-0x00000247C7E81000-memory.dmp

memory/2984-57-0x00000247C7E80000-0x00000247C7E81000-memory.dmp

memory/2984-81-0x00000247C7E80000-0x00000247C7E81000-memory.dmp

memory/2984-140-0x00000247C9650000-0x00000247CA650000-memory.dmp

memory/2984-143-0x00000247C9650000-0x00000247CA650000-memory.dmp

memory/2984-147-0x00000247C9650000-0x00000247CA650000-memory.dmp