Malware Analysis Report

2024-11-13 18:33

Sample ID 231012-hy758adb5w
Target m_AP Remittance - L - Ref S158578-3_PDF.zip
SHA256 f7232989ee2ad63a73dac3203924245ee40cafe9a641141ffd8c7768e0853351
Tags
strrat persistence stealer trojan
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

f7232989ee2ad63a73dac3203924245ee40cafe9a641141ffd8c7768e0853351

Threat Level: Known bad

The file m_AP Remittance - L - Ref S158578-3_PDF.zip was found to be: Known bad.

Malicious Activity Summary

strrat persistence stealer trojan

Strrat family

STRRAT

Drops startup file

Adds Run key to start application

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Creates scheduled task(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-12 07:09

Signatures

Strrat family

strrat

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-12 07:09

Reported

2023-10-13 12:51

Platform

win7-20230831-en

Max time kernel

118s

Max time network

132s

Command Line

java -jar "C:\Users\Admin\AppData\Local\Temp\AP Remittance - L - Ref S158578-4_PDF.jar"

Signatures

N/A

Processes

C:\Windows\system32\java.exe

java -jar "C:\Users\Admin\AppData\Local\Temp\AP Remittance - L - Ref S158578-4_PDF.jar"

Network

N/A

Files

memory/1080-8-0x0000000002100000-0x0000000005100000-memory.dmp

memory/1080-10-0x0000000000130000-0x0000000000131000-memory.dmp

memory/1080-11-0x0000000002100000-0x0000000005100000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-12 07:09

Reported

2023-10-13 12:52

Platform

win10v2004-20230915-en

Max time kernel

150s

Max time network

160s

Command Line

java -jar "C:\Users\Admin\AppData\Local\Temp\AP Remittance - L - Ref S158578-4_PDF.jar"

Signatures

STRRAT

trojan stealer strrat

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\AP Remittance - L - Ref S158578-4_PDF.jar C:\ProgramData\Oracle\Java\javapath\java.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AP Remittance - L - Ref S158578-4_PDF = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\AP Remittance - L - Ref S158578-4_PDF.jar\"" C:\ProgramData\Oracle\Java\javapath\java.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AP Remittance - L - Ref S158578-4_PDF = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\AP Remittance - L - Ref S158578-4_PDF.jar\"" C:\ProgramData\Oracle\Java\javapath\java.exe N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\ProgramData\Oracle\Java\javapath\java.exe

java -jar "C:\Users\Admin\AppData\Local\Temp\AP Remittance - L - Ref S158578-4_PDF.jar"

C:\Windows\SYSTEM32\cmd.exe

cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\AP Remittance - L - Ref S158578-4_PDF.jar"

C:\Program Files\Java\jre1.8.0_66\bin\java.exe

"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\AP Remittance - L - Ref S158578-4_PDF.jar"

C:\Windows\system32\schtasks.exe

schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\AP Remittance - L - Ref S158578-4_PDF.jar"

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 str01.3utilities.com udp
NL 45.81.39.61:8888 str01.3utilities.com tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
N/A 127.0.0.1:8888 tcp
US 8.8.8.8:53 254.3.248.8.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
US 8.8.8.8:53 38.148.119.40.in-addr.arpa udp
US 8.8.8.8:53 254.22.238.8.in-addr.arpa udp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
US 8.8.8.8:53 14.173.189.20.in-addr.arpa udp
NL 45.81.39.61:8888 str01.3utilities.com tcp
N/A 127.0.0.1:8888 tcp
NL 45.81.39.61:8888 str01.3utilities.com tcp

Files

memory/1540-4-0x0000000002620000-0x0000000003620000-memory.dmp

memory/1540-11-0x0000000000A00000-0x0000000000A01000-memory.dmp

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\AP Remittance - L - Ref S158578-4_PDF.jar

MD5 052f8ca40a7bc61719d275dcbda72790
SHA1 a3b43585f2ec3c8ff580f3b810a1fb92a05ec249
SHA256 ccaa1364264bf43edefa2f9e1439fa02f5a667fd0f724f620c43842a8e365123
SHA512 f7497e0dd59424f35948c132895589cd2359ffdcc996cbb2495233431ea672ff13984ca7dc32022e0ab36c2395d8714191b47f4dae41eaafcdf9ed95c44427b1

memory/1540-23-0x0000000002620000-0x0000000003620000-memory.dmp

C:\Users\Admin\AppData\Roaming\AP Remittance - L - Ref S158578-4_PDF.jar

MD5 052f8ca40a7bc61719d275dcbda72790
SHA1 a3b43585f2ec3c8ff580f3b810a1fb92a05ec249
SHA256 ccaa1364264bf43edefa2f9e1439fa02f5a667fd0f724f620c43842a8e365123
SHA512 f7497e0dd59424f35948c132895589cd2359ffdcc996cbb2495233431ea672ff13984ca7dc32022e0ab36c2395d8714191b47f4dae41eaafcdf9ed95c44427b1

memory/8-35-0x00000000032E0000-0x00000000042E0000-memory.dmp

C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp

MD5 702df3282cc6cb46d15a2aeb11baa118
SHA1 5c1e87c026fd8cbb6064ddb46fe67000be94f6c1
SHA256 75e768f62982e4cd18578935b1bc1ffdeedaca8c84d77c66656770d9bf33d8e4
SHA512 9df220dbc59d68fe6c08a59f86db87535cfa12adcf093ec1ba0fef4ed9559361d7d1e34f14ae8335e68b2c02497bc6f8028c8f01ab7fe90c455adc3480ad1b7e

memory/8-37-0x0000000002FF0000-0x0000000002FF1000-memory.dmp

memory/8-39-0x0000000002FF0000-0x0000000002FF1000-memory.dmp

memory/8-42-0x00000000032E0000-0x00000000042E0000-memory.dmp

memory/1540-44-0x0000000002620000-0x0000000003620000-memory.dmp

memory/8-45-0x00000000032E0000-0x00000000042E0000-memory.dmp

memory/8-46-0x00000000032E0000-0x00000000042E0000-memory.dmp

memory/8-47-0x00000000032E0000-0x00000000042E0000-memory.dmp

memory/8-48-0x00000000032E0000-0x00000000042E0000-memory.dmp