Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
11-10-2024 11:52
Behavioral task
behavioral1
Sample
doc20210812876462_PDF.jar
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
doc20210812876462_PDF.jar
Resource
win10v2004-20241007-en
General
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Target
doc20210812876462_PDF.jar
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Size
94KB
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MD5
9f431f7105d073752fd396105dc898ef
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SHA1
62058bd9d3683d7a6983d36722fede080b87c3d3
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SHA256
32cbcd636b3295b79872dc883f84bd3c5f378f9e2bd64a73148e8a3d5d6d58f9
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SHA512
26df1f20d773c009df88e440a484dd5feafc8f3ef46ddf90fcd465eb1c4b44bff112a44c2f79b9168aa64564bfd7a48ec14d110384e3d5d3944b9ada1460aee0
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SSDEEP
1536:Ex4jk2LwtGGBCRLwZ0MQ6i98iZGmAT5hSXx93uf3gdTsypX7GufP16wzInBvOwv:VjLwtGLi0MQ6iS8ATo9efwfplP11zC
Malware Config
Extracted
strrat
79.134.225.26:7888
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license_id
3CJV-H140-XWVJ-P21B-U6QX
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plugins_url
http://jbfrost.live/strigoi/server/?hwid=1&lid=m&ht=5
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scheduled_task
true
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secondary_startup
true
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startup
true
Signatures
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Drops startup file 1 IoCs
Processes:
java.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\doc20210812876462_PDF.jar java.exe -
Loads dropped DLL 2 IoCs
Processes:
java.exejava.exepid process 216 java.exe 2960 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
java.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\doc20210812876462_PDF = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\doc20210812876462_PDF.jar\"" java.exe Set value (str) \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\doc20210812876462_PDF = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\doc20210812876462_PDF.jar\"" java.exe -
Drops file in Program Files directory 1 IoCs
Processes:
java.exedescription ioc process File created C:\Program Files\Java\jre-1.8\doc20210812876462_PDF.jar java.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of WriteProcessMemory 10 IoCs
Processes:
java.exejava.exejava.execmd.exedescription pid process target process PID 4524 wrote to memory of 3292 4524 java.exe java.exe PID 4524 wrote to memory of 3292 4524 java.exe java.exe PID 3292 wrote to memory of 216 3292 java.exe java.exe PID 3292 wrote to memory of 216 3292 java.exe java.exe PID 216 wrote to memory of 4436 216 java.exe cmd.exe PID 216 wrote to memory of 4436 216 java.exe cmd.exe PID 216 wrote to memory of 2960 216 java.exe java.exe PID 216 wrote to memory of 2960 216 java.exe java.exe PID 4436 wrote to memory of 1736 4436 cmd.exe schtasks.exe PID 4436 wrote to memory of 1736 4436 cmd.exe schtasks.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exejava -jar C:\Users\Admin\AppData\Local\Temp\doc20210812876462_PDF.jar1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4524 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Program Files\Java\jre-1.8\doc20210812876462_PDF.jar"2⤵
- Suspicious use of WriteProcessMemory
PID:3292 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\doc20210812876462_PDF.jar"3⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:216 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\doc20210812876462_PDF.jar"4⤵
- Suspicious use of WriteProcessMemory
PID:4436 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\doc20210812876462_PDF.jar"5⤵
- Scheduled Task/Job: Scheduled Task
PID:1736
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C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\doc20210812876462_PDF.jar"4⤵
- Loads dropped DLL
PID:2960
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
94KB
MD59f431f7105d073752fd396105dc898ef
SHA162058bd9d3683d7a6983d36722fede080b87c3d3
SHA25632cbcd636b3295b79872dc883f84bd3c5f378f9e2bd64a73148e8a3d5d6d58f9
SHA51226df1f20d773c009df88e440a484dd5feafc8f3ef46ddf90fcd465eb1c4b44bff112a44c2f79b9168aa64564bfd7a48ec14d110384e3d5d3944b9ada1460aee0
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3442511616-637977696-3186306149-1000\83aa4cc77f591dfc2374580bbd95f6ba_5ab270f5-f3a9-47d1-97d7-bbd50acf9955
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
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Filesize
1.4MB
MD5acfb5b5fd9ee10bf69497792fd469f85
SHA10e0845217c4907822403912ad6828d8e0b256208
SHA256b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
SHA512e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa
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Filesize
2.6MB
MD52f4a99c2758e72ee2b59a73586a2322f
SHA1af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA25624d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
SHA512b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494
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Filesize
4.1MB
MD5b33387e15ab150a7bf560abdc73c3bec
SHA166b8075784131f578ef893fd7674273f709b9a4c
SHA2562eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA51225cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279
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Filesize
772KB
MD5e1aa38a1e78a76a6de73efae136cdb3a
SHA1c463da71871f780b2e2e5dba115d43953b537daf
SHA2562ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
SHA512fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d