Malware Analysis Report

2024-11-13 18:33

Sample ID 231231-nrtbdagbhk
Target 34a5fded010cded1de9c6f1336396131
SHA256 e91d0d0170c7682404fb2a6c156789cf2c6cb7a3f98369b22f0b461ec5fa84f4
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

e91d0d0170c7682404fb2a6c156789cf2c6cb7a3f98369b22f0b461ec5fa84f4

Threat Level: Known bad

The file 34a5fded010cded1de9c6f1336396131 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

2023-12-31 11:38

Signatures

Strrat family

strrat

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-31 11:38

Reported

2024-01-04 10:49

Platform

win7-20231129-en

Max time kernel

146s

Max time network

147s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\doc20210812876462_PDF.jar

Signatures

N/A

Processes

C:\Windows\system32\java.exe

java -jar C:\Users\Admin\AppData\Local\Temp\doc20210812876462_PDF.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 140.82.121.3:443 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
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
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

Files

memory/804-8-0x0000000002470000-0x0000000005470000-memory.dmp

memory/804-10-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-17-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-24-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-29-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-34-0x0000000002470000-0x0000000005470000-memory.dmp

memory/804-43-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-47-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-60-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-58-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-56-0x0000000000240000-0x0000000000241000-memory.dmp

memory/804-86-0x0000000000240000-0x0000000000241000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-31 11:38

Reported

2024-01-04 10:48

Platform

win10v2004-20231222-en

Max time kernel

144s

Max time network

152s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\doc20210812876462_PDF.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 3768 wrote to memory of 388 N/A C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe C:\Windows\system32\icacls.exe
PID 3768 wrote to memory of 388 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\doc20210812876462_PDF.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 21.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.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 github.com udp
US 8.8.8.8:53 repo1.maven.org udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
DE 140.82.121.3:443 github.com tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 8.8.8.8:53 3.121.82.140.in-addr.arpa udp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp

Files

memory/3768-4-0x0000025C847A0000-0x0000025C857A0000-memory.dmp

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

MD5 9ba87a3eca48f5d3b6e979181b4b0a6d
SHA1 bacc6fb15f2b7df30674cc35ede5b529f254368a
SHA256 cd568556859956b1bfe10e48c2d5e47de41bf18d5fe76c62edf40f1d9c4b38e9
SHA512 9b542cc978a69faa6e4d438ac6228f1adb5c8c24f1d0d41b88c31ff910b68e9a50628512cf0af84e84ba46a7a15c00b55c045c9ccbb25a8ef51534661b0d8108

memory/3768-18-0x0000025C84780000-0x0000025C84781000-memory.dmp

memory/3768-19-0x0000025C847A0000-0x0000025C857A0000-memory.dmp

memory/3768-29-0x0000025C84780000-0x0000025C84781000-memory.dmp

memory/3768-33-0x0000025C847A0000-0x0000025C857A0000-memory.dmp

memory/3768-48-0x0000025C847A0000-0x0000025C857A0000-memory.dmp

memory/3768-52-0x0000025C847A0000-0x0000025C857A0000-memory.dmp

memory/3768-57-0x0000025C847A0000-0x0000025C857A0000-memory.dmp

memory/3768-72-0x0000025C84780000-0x0000025C84781000-memory.dmp

memory/3768-76-0x0000025C84780000-0x0000025C84781000-memory.dmp

memory/3768-78-0x0000025C84780000-0x0000025C84781000-memory.dmp