Malware Analysis Report

2025-06-16 01:03

Sample ID 220120-jgd2gsggf4
Target Remittance_Advice.jar
SHA256 6a695e198d37c905288cf2ad103315559c7f870a2f92b03fbdcfabe0a8a34ba6
Tags
strrat persistence stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

6a695e198d37c905288cf2ad103315559c7f870a2f92b03fbdcfabe0a8a34ba6

Threat Level: Known bad

The file Remittance_Advice.jar was found to be: Known bad.

Malicious Activity Summary

strrat persistence stealer trojan

STRRAT

Drops startup file

Loads dropped DLL

Adds Run key to start application

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-01-20 07:38

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-01-20 07:38

Reported

2022-01-20 07:40

Platform

win7-en-20211208

Max time kernel

122s

Max time network

122s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\Remittance_Advice.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\Remittance_Advice.jar C:\Program Files\Java\jre7\bin\java.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Program Files\Java\jre7\bin\java.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remittance_Advice = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Remittance_Advice.jar\"" C:\Program Files\Java\jre7\bin\java.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Remittance_Advice = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Remittance_Advice.jar\"" C:\Program Files\Java\jre7\bin\java.exe N/A

Creates scheduled task(s)

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

Processes

C:\Windows\system32\java.exe

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

C:\Program Files\Java\jre7\bin\java.exe

"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\Remittance_Advice.jar"

C:\Windows\system32\cmd.exe

cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Remittance_Advice.jar"

C:\Program Files\Java\jre7\bin\java.exe

"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\Remittance_Advice.jar"

C:\Windows\system32\schtasks.exe

schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Remittance_Advice.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
US 140.82.113.4:443 github.com tcp
US 8.8.8.8:53 objects.githubusercontent.com udp
US 185.199.108.133:443 objects.githubusercontent.com tcp

Files

memory/1520-55-0x000007FEFBC01000-0x000007FEFBC03000-memory.dmp

memory/1520-57-0x00000000021D0000-0x00000000051D0000-memory.dmp

memory/1520-59-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-61-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-70-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-92-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-94-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-104-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-105-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-107-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-106-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-109-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-110-0x0000000000120000-0x0000000000121000-memory.dmp

memory/1520-111-0x0000000000120000-0x0000000000121000-memory.dmp

C:\Users\Admin\Remittance_Advice.jar

MD5 e5df17e52c9ad8157ef9ad8c42072f6e
SHA1 7b998e5455ffeef99cbf3e02e8ff057220ce9749
SHA256 6a695e198d37c905288cf2ad103315559c7f870a2f92b03fbdcfabe0a8a34ba6
SHA512 c8983cf43ef8dcfd651dd2ae788b2f1b97bfff5fe0406c1bcbe4a5d30b6adae005208a9463e3f9163bc6b7439a252547c2ccb110da77e8f33c450087e855542e

memory/1152-123-0x0000000002160000-0x0000000005160000-memory.dmp

memory/1152-122-0x0000000000120000-0x0000000000121000-memory.dmp

C:\Users\Admin\lib\jna-platform-5.5.0.jar

MD5 2f4a99c2758e72ee2b59a73586a2322f
SHA1 af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA256 24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
SHA512 b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

C:\Users\Admin\lib\jna-5.5.0.jar

MD5 acfb5b5fd9ee10bf69497792fd469f85
SHA1 0e0845217c4907822403912ad6828d8e0b256208
SHA256 b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
SHA512 e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

C:\Users\Admin\lib\system-hook-3.5.jar

MD5 e1aa38a1e78a76a6de73efae136cdb3a
SHA1 c463da71871f780b2e2e5dba115d43953b537daf
SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
SHA512 fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2329389628-4064185017-3901522362-1000\83aa4cc77f591dfc2374580bbd95f6ba_3bd845b8-ce6a-4337-9974-31490196462a

MD5 c8366ae350e7019aefc9d1e6e6a498c6
SHA1 5731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA512 33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

\Users\Admin\AppData\Local\Temp\jna-63116079\jna7999178308381255234.dll

MD5 e02979ecd43bcc9061eb2b494ab5af50
SHA1 3122ac0e751660f646c73b10c4f79685aa65c545
SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA512 1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar

MD5 b33387e15ab150a7bf560abdc73c3bec
SHA1 66b8075784131f578ef893fd7674273f709b9a4c
SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA512 25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

memory/1152-130-0x0000000000120000-0x0000000000121000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-01-20 07:38

Reported

2022-01-20 07:40

Platform

win10v2004-en-20220113

Max time kernel

1s

Max time network

4s

Command Line

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

Signatures

N/A

Processes

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

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

Network

Files

N/A