Malware Analysis Report

2024-11-13 18:32

Sample ID 240104-y19ptsaecr
Target 41c176289fce610d62f725d77e3a7d01.zip
SHA256 b8854611b04b7ff0269ba30bc535bc4ec583e639a4385818d80ef6ae9c16fb9d
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

b8854611b04b7ff0269ba30bc535bc4ec583e639a4385818d80ef6ae9c16fb9d

Threat Level: Known bad

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

Malicious Activity Summary

discovery strrat

Strrat family

Modifies file permissions

Drops file in Program Files directory

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-04 20:16

Signatures

Strrat family

strrat

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-04 20:16

Reported

2024-01-04 20:21

Platform

win7-20231215-en

Max time kernel

122s

Max time network

128s

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
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

Files

memory/2884-4-0x00000000021C0000-0x00000000051C0000-memory.dmp

memory/2884-10-0x0000000000120000-0x0000000000121000-memory.dmp

memory/2884-16-0x0000000000120000-0x0000000000121000-memory.dmp

memory/2884-21-0x0000000000120000-0x0000000000121000-memory.dmp

memory/2884-26-0x0000000000120000-0x0000000000121000-memory.dmp

memory/2884-36-0x0000000000120000-0x0000000000121000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-04 20:16

Reported

2024-01-04 20:20

Platform

win10v2004-20231215-en

Max time kernel

144s

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

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files\Java\jre-1.8\bin\server\jvm.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\server\dll\jvm.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\jvm.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\ntdll.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\symbols\dll\ntdll.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\jvm.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\dll\jvm.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\symbols\dll\jvm.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\server\ntdll.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\server\dll\ntdll.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\ntdll.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\dll\ntdll.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3404 wrote to memory of 2144 N/A C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe C:\Windows\system32\icacls.exe
PID 3404 wrote to memory of 2144 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
GB 96.16.110.114:80 tcp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 146.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 17.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 28.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 211.143.182.52.in-addr.arpa udp

Files

memory/3404-4-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

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

MD5 f563247403a4b33b1707281823235765
SHA1 b6b3b63fde9ad090fecffd5076c00d992e02468d
SHA256 1950f5d57c0b8f390174a9b0dc79aacfdaf0f1487289b787f2c7eef42558f9aa
SHA512 6624239f7910eb931cbc9baac9d33c8a4d96ea96c55d1ee111e1e49d3d4d662b1e15f008180c65378a9b789c56a839ffbeb6f82aa49c62d0ccee6bbaf51fbb45

memory/3404-16-0x0000013FD1170000-0x0000013FD1171000-memory.dmp

memory/3404-18-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

memory/3404-28-0x0000013FD1170000-0x0000013FD1171000-memory.dmp

memory/3404-29-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

memory/3404-35-0x0000013FD1170000-0x0000013FD1171000-memory.dmp

memory/3404-42-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

memory/3404-41-0x0000013FD2D50000-0x0000013FD2D60000-memory.dmp

memory/3404-40-0x0000013FD2CE0000-0x0000013FD2CF0000-memory.dmp

memory/3404-46-0x0000013FD2D40000-0x0000013FD2D50000-memory.dmp

memory/3404-47-0x0000013FD2D70000-0x0000013FD2D80000-memory.dmp

memory/3404-48-0x0000013FD2D80000-0x0000013FD2D90000-memory.dmp

memory/3404-45-0x0000013FD2D30000-0x0000013FD2D40000-memory.dmp

memory/3404-50-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

memory/3404-51-0x0000013FD2DA0000-0x0000013FD2DB0000-memory.dmp

memory/3404-53-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp

memory/3404-52-0x0000013FD2DC0000-0x0000013FD2DD0000-memory.dmp

memory/3404-49-0x0000013FD2D90000-0x0000013FD2DA0000-memory.dmp

memory/3404-44-0x0000013FD2D20000-0x0000013FD2D30000-memory.dmp

memory/3404-43-0x0000013FD2D10000-0x0000013FD2D20000-memory.dmp

memory/3404-54-0x0000013FD2A60000-0x0000013FD3A60000-memory.dmp