Malware Analysis Report

2024-12-07 20:40

Sample ID 230704-hrg1fsbd66
Target P.O-EPEC-1746.jar
SHA256 b08c54a7e2fb3ec6c31f0332b762e51b556d91f0d7cbe7745f5c417206f59d02
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

b08c54a7e2fb3ec6c31f0332b762e51b556d91f0d7cbe7745f5c417206f59d02

Threat Level: Known bad

The file P.O-EPEC-1746.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

Uses Task Scheduler COM API

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-07-04 06:58

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-07-04 06:58

Reported

2023-07-04 07:00

Platform

win7-20230703-en

Max time kernel

153s

Max time network

143s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\P.O-EPEC-1746.jar

Signatures

N/A

Processes

C:\Windows\system32\java.exe

java -jar C:\Users\Admin\AppData\Local\Temp\P.O-EPEC-1746.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 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 8.8.8.8:53 github.com udp
US 140.82.112.4:443 github.com tcp
US 140.82.112.4:443 github.com tcp
US 140.82.112.4:443 github.com tcp
US 140.82.112.4:443 github.com tcp
US 140.82.112.4:443 github.com tcp
US 140.82.112.4:443 github.com tcp
US 140.82.112.4:443 github.com tcp
US 140.82.112.4:443 github.com tcp
US 140.82.112.4:443 github.com tcp
US 8.8.8.8:53 github.com udp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp
US 140.82.112.3:443 github.com tcp

Files

memory/3008-63-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-70-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-71-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-75-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-77-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-79-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-84-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-85-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-94-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-99-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-102-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-106-0x0000000000120000-0x0000000000121000-memory.dmp

memory/3008-110-0x0000000000120000-0x0000000000121000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-07-04 06:58

Reported

2023-07-04 07:00

Platform

win10v2004-20230703-en

Max time kernel

146s

Max time network

153s

Command Line

java -jar C:\Users\Admin\AppData\Local\Temp\P.O-EPEC-1746.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\P.O-EPEC-1746.jar C:\Program Files\Java\jre1.8.0_66\bin\java.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Program Files\Java\jre1.8.0_66\bin\java.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\P.O-EPEC-1746 = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\P.O-EPEC-1746.jar\"" C:\Program Files\Java\jre1.8.0_66\bin\java.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\P.O-EPEC-1746 = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\P.O-EPEC-1746.jar\"" C:\Program Files\Java\jre1.8.0_66\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

Uses Task Scheduler COM API

persistence

Processes

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

java -jar C:\Users\Admin\AppData\Local\Temp\P.O-EPEC-1746.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\P.O-EPEC-1746.jar"

C:\Windows\SYSTEM32\cmd.exe

cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\P.O-EPEC-1746.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\P.O-EPEC-1746.jar"

C:\Windows\system32\schtasks.exe

schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\P.O-EPEC-1746.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
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 8.8.8.8:53 209.192.232.199.in-addr.arpa udp
US 8.8.8.8:53 4.113.82.140.in-addr.arpa udp
US 8.8.8.8:53 objects.githubusercontent.com udp
US 185.199.108.133:443 objects.githubusercontent.com tcp
US 8.8.8.8:53 133.108.199.185.in-addr.arpa udp
US 8.8.8.8:53 igw.myfirewall.org udp
US 79.110.49.9:5861 igw.myfirewall.org tcp
US 79.110.49.9:5861 igw.myfirewall.org tcp

Files

memory/4764-144-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-164-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-183-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-185-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-189-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-190-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-192-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-197-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-202-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-209-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-213-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-216-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-218-0x00000000014D0000-0x00000000014D1000-memory.dmp

memory/4764-228-0x00000000014D0000-0x00000000014D1000-memory.dmp

C:\Users\Admin\P.O-EPEC-1746.jar

MD5 d8688e230d5513f86999b93b84b2465b
SHA1 65dbdb665ff9144f7d4c2a80c6039be4781208c6
SHA256 b08c54a7e2fb3ec6c31f0332b762e51b556d91f0d7cbe7745f5c417206f59d02
SHA512 b9a7d75bc5afbb5322b69575dcafafd002431f41ecd97a34190eef5122cbe1d8615b302650e934bd123bc48a223abd323f4c9248986743c78d694e51af033123

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

MD5 b33387e15ab150a7bf560abdc73c3bec
SHA1 66b8075784131f578ef893fd7674273f709b9a4c
SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA512 25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

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\.oracle_jre_usage\90737d32e3aba4b.timestamp

MD5 79fa50b7d57684eda050fbb48901731a
SHA1 8e48b316f58693081d63b30adad3b88df47550dd
SHA256 461c0f5c6e357f944c619801140f610db8a82d5609b7eac81f0c4e9be9a940bf
SHA512 b09c0a958ddb74e6c85bb2f349abd4a6d853298a26a1be353496816f5945d517816ffb4984599d82d3f249f4be01f5b1eb694e17117abb09be479900ccdbf1f4

memory/3552-247-0x0000000000D30000-0x0000000000D31000-memory.dmp

C:\Users\Admin\AppData\Roaming\P.O-EPEC-1746.jar

MD5 d8688e230d5513f86999b93b84b2465b
SHA1 65dbdb665ff9144f7d4c2a80c6039be4781208c6
SHA256 b08c54a7e2fb3ec6c31f0332b762e51b556d91f0d7cbe7745f5c417206f59d02
SHA512 b9a7d75bc5afbb5322b69575dcafafd002431f41ecd97a34190eef5122cbe1d8615b302650e934bd123bc48a223abd323f4c9248986743c78d694e51af033123

memory/3552-256-0x0000000000D30000-0x0000000000D31000-memory.dmp

C:\Users\Admin\AppData\Roaming\P.O-EPEC-1746.jar

MD5 d8688e230d5513f86999b93b84b2465b
SHA1 65dbdb665ff9144f7d4c2a80c6039be4781208c6
SHA256 b08c54a7e2fb3ec6c31f0332b762e51b556d91f0d7cbe7745f5c417206f59d02
SHA512 b9a7d75bc5afbb5322b69575dcafafd002431f41ecd97a34190eef5122cbe1d8615b302650e934bd123bc48a223abd323f4c9248986743c78d694e51af033123

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

MD5 e1aa38a1e78a76a6de73efae136cdb3a
SHA1 c463da71871f780b2e2e5dba115d43953b537daf
SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
SHA512 fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

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

MD5 b33387e15ab150a7bf560abdc73c3bec
SHA1 66b8075784131f578ef893fd7674273f709b9a4c
SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA512 25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

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

MD5 2f4a99c2758e72ee2b59a73586a2322f
SHA1 af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA256 24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
SHA512 b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

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

MD5 acfb5b5fd9ee10bf69497792fd469f85
SHA1 0e0845217c4907822403912ad6828d8e0b256208
SHA256 b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
SHA512 e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

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

MD5 55ec08856668cd633d05a70d16458bb1
SHA1 2ee0962726da28e9441a975bf6d60d91421be2d7
SHA256 46f2bfe34fc742d9bcc096b99320e046c758b13f64fbbeeb6c38e8af6f5ec81b
SHA512 27863d5d950283ec68b8eaaa6ea002ceebea49dcbb343fca30760c3667bc1740539df523195570d8cd0ff70ce73d5fe4e3f3a87ac1cc7c180c7a366d1f198867

memory/3612-273-0x00000000008A0000-0x00000000008A1000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3195054982-4292022746-1467505928-1000\83aa4cc77f591dfc2374580bbd95f6ba_320257d5-a40a-4005-a66a-f8da3659bec3

MD5 c8366ae350e7019aefc9d1e6e6a498c6
SHA1 5731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA512 33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna6430995161422407211.dll

MD5 e02979ecd43bcc9061eb2b494ab5af50
SHA1 3122ac0e751660f646c73b10c4f79685aa65c545
SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA512 1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372