Malware Analysis Report

2024-11-13 18:32

Sample ID 231231-ch85paead7
Target 23dbd5703268a7db67368a072c9ad7f3
SHA256 6d588dde32764fd765cdc52f15eabb65262001a803befd327bfe62bb9010bc91
Tags
discovery strrat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

6d588dde32764fd765cdc52f15eabb65262001a803befd327bfe62bb9010bc91

Threat Level: Known bad

The file 23dbd5703268a7db67368a072c9ad7f3 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

2023-12-31 02:05

Signatures

Strrat family

strrat

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-31 02:05

Reported

2024-01-05 03:50

Platform

win10v2004-20231222-en

Max time kernel

145s

Max time network

105s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\23dbd5703268a7db67368a072c9ad7f3.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\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\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\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\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\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\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
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\symbols\dll\jvm.pdb C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4804 wrote to memory of 2220 N/A C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe C:\Windows\system32\icacls.exe
PID 4804 wrote to memory of 2220 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\23dbd5703268a7db67368a072c9ad7f3.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 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
NL 13.95.31.18:443 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
US 8.8.8.8:53 176.178.17.96.in-addr.arpa udp
GB 88.221.135.217:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 20.12.23.50:443 tcp
N/A 20.12.23.50:443 tcp
US 8.8.8.8:53 udp
N/A 20.12.23.50:443 tcp
US 8.8.8.8:53 udp
NL 13.95.31.18:443 tcp
US 8.8.8.8:53 udp
NL 13.95.31.18:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 20.12.23.50:443 tcp
N/A 20.12.23.50:443 tcp
US 8.8.8.8:53 udp
US 92.123.241.104:80 tcp
US 92.123.241.104:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 20.12.23.50:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 20.54.110.119:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 88.221.135.217:80 tcp
GB 96.17.178.174:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.175:80 tcp
GB 88.221.134.57:80 tcp
N/A 96.17.178.175:80 tcp
GB 88.221.134.57:80 tcp
US 8.8.8.8:53 udp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.194:80 tcp
GB 88.221.134.57:80 tcp
US 8.8.8.8:53 udp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
US 8.8.8.8:53 udp
GB 88.221.134.57:80 tcp
N/A 52.111.229.43:443 tcp
GB 88.221.134.57:80 tcp
GB 88.221.134.57:80 tcp
US 8.8.8.8:53 udp
GB 88.221.134.57:80 tcp
GB 88.221.134.18:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
GB 96.17.178.174:80 tcp
US 8.8.8.8:53 udp
NL 13.95.31.18:443 tcp
US 8.8.8.8:53 udp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
GB 96.17.178.176:80 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
N/A 20.199.58.43:443 tcp
N/A 20.199.58.43:443 tcp
N/A 20.199.58.43:443 tcp
GB 96.17.178.176:80 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 96.17.178.178:80 tcp
US 8.8.8.8:53 udp
N/A 88.221.135.88:80 tcp
GB 88.221.134.18:80 tcp
US 8.8.8.8:53 udp
N/A 204.79.197.200:443 tcp
N/A 204.79.197.200:443 tcp
N/A 204.79.197.200:443 tcp
N/A 204.79.197.200:443 tcp
N/A 204.79.197.200:443 tcp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
GB 88.221.134.18:80 tcp
US 192.229.221.95:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
NL 13.95.31.18:443 tcp
GB 88.221.134.18:80 tcp
GB 88.221.134.18:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
US 8.8.8.8:53 udp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
GB 88.221.135.217:80 tcp
GB 88.221.135.217:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
US 8.8.8.8:53 udp
N/A 20.189.173.12:443 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
US 8.8.8.8:53 udp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp
N/A 96.17.178.178:80 tcp

Files

memory/4804-4-0x0000014263A90000-0x0000014264A90000-memory.dmp

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

MD5 5ad9012a291f66610082e44a8177022f
SHA1 4e2e54676988d00d34acd29a7cad133891a5b149
SHA256 fc7c758ad7cb14478dd804eef3484c108731d235794ebe45009df13f950f1ec8
SHA512 224ec4dfd956b7a39a6cbf022e8cd8bd5ac714d645c3e8e3785ec5f047e7c3d9b187415ba709f1ba0170db7e20a076b574dbc7beb992617748a0779b0e8da604

memory/4804-14-0x0000014262160000-0x0000014262161000-memory.dmp

memory/4804-16-0x0000014263A90000-0x0000014264A90000-memory.dmp

memory/4804-28-0x0000014262160000-0x0000014262161000-memory.dmp

memory/4804-29-0x0000014263A90000-0x0000014264A90000-memory.dmp

memory/4804-36-0x0000014263D80000-0x0000014263D90000-memory.dmp

memory/4804-38-0x0000014263D40000-0x0000014263D50000-memory.dmp

memory/4804-40-0x0000014263D70000-0x0000014263D80000-memory.dmp

memory/4804-39-0x0000014263D50000-0x0000014263D60000-memory.dmp

memory/4804-44-0x0000014263A90000-0x0000014264A90000-memory.dmp

memory/4804-43-0x0000014263DB0000-0x0000014263DC0000-memory.dmp

memory/4804-42-0x0000014263DA0000-0x0000014263DB0000-memory.dmp

memory/4804-41-0x0000014263D90000-0x0000014263DA0000-memory.dmp

memory/4804-37-0x0000014263D30000-0x0000014263D40000-memory.dmp

memory/4804-35-0x0000014263D10000-0x0000014263D20000-memory.dmp

memory/4804-45-0x0000014263A90000-0x0000014264A90000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-31 02:05

Reported

2024-01-05 03:50

Platform

win7-20231215-en

Max time kernel

149s

Max time network

155s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\23dbd5703268a7db67368a072c9ad7f3.jar

Signatures

N/A

Processes

C:\Windows\system32\java.exe

java -jar C:\Users\Admin\AppData\Local\Temp\23dbd5703268a7db67368a072c9ad7f3.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
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 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 199.232.192.209:443 repo1.maven.org 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

Files

memory/3004-6-0x00000000020F0000-0x00000000050F0000-memory.dmp

memory/3004-10-0x00000000005A0000-0x00000000005A1000-memory.dmp

memory/3004-11-0x00000000005A0000-0x00000000005A1000-memory.dmp

memory/3004-37-0x00000000005A0000-0x00000000005A1000-memory.dmp

memory/3004-45-0x00000000005A0000-0x00000000005A1000-memory.dmp

memory/3004-47-0x00000000005A0000-0x00000000005A1000-memory.dmp

memory/3004-53-0x00000000005A0000-0x00000000005A1000-memory.dmp

memory/3004-60-0x00000000005A0000-0x00000000005A1000-memory.dmp

memory/3004-61-0x00000000005A0000-0x00000000005A1000-memory.dmp

memory/3004-101-0x00000000020F0000-0x00000000050F0000-memory.dmp