Analysis
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max time kernel
298s -
max time network
205s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20-01-2025 15:43
Behavioral task
behavioral1
Sample
20012025_1543_19012025_Proforma A503.jar
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
20012025_1543_19012025_Proforma A503.jar
Resource
win10v2004-20241007-en
General
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Target
20012025_1543_19012025_Proforma A503.jar
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Size
263KB
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MD5
835fdde38be5b121f3b2a56eb368b360
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SHA1
336b5bb4ce70453e796dad0c27aa3c195c735fcc
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SHA256
56d4a754c102a6fd1efaa3cf6887360b6c5f6590971c29180e0e851c5aeef1f6
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SHA512
6413e75745366606ac440ef126d0bcb57ba158b3419e2faa261cbde5071dd4c009496c61560b3badacd0aca1e72140a437ea63dc4c8dbff10ca63bb05e3efcbf
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SSDEEP
3072:cuoa3eQ4jnnB/gKjkJVt+fbZudV53lhq2TxZBX4L0vmlWLlHkZtwibQGdf7GSk:RDEd/Bj0+TQd1hbTn54L0vuWOX7MYS
Malware Config
Extracted
strrat
www.kposlifestyle.design :1980
127.0.0.1:1980
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license_id
0801-GRBL-SUN9-LG8M-2C9C
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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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Strrat family
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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\20012025_1543_19012025_Proforma A503.jar java.exe -
Loads dropped DLL 1 IoCs
pid Process 432 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\20012025_1543_19012025_Proforma A503 = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\20012025_1543_19012025_Proforma A503.jar\"" java.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\20012025_1543_19012025_Proforma A503 = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\20012025_1543_19012025_Proforma A503.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.
pid Process 3592 schtasks.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4988 wrote to memory of 4036 4988 java.exe 90 PID 4988 wrote to memory of 4036 4988 java.exe 90 PID 4036 wrote to memory of 3212 4036 java.exe 92 PID 4036 wrote to memory of 3212 4036 java.exe 92 PID 4036 wrote to memory of 432 4036 java.exe 94 PID 4036 wrote to memory of 432 4036 java.exe 94 PID 3212 wrote to memory of 3592 3212 cmd.exe 97 PID 3212 wrote to memory of 3592 3212 cmd.exe 97 -
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\20012025_1543_19012025_Proforma A503.jar"1⤵
- Suspicious use of WriteProcessMemory
PID:4988 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\20012025_1543_19012025_Proforma A503.jar"2⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4036 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\20012025_1543_19012025_Proforma A503.jar"3⤵
- Suspicious use of WriteProcessMemory
PID:3212 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\20012025_1543_19012025_Proforma A503.jar"4⤵
- Scheduled Task/Job: Scheduled Task
PID:3592
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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\20012025_1543_19012025_Proforma A503.jar"3⤵
- Loads dropped DLL
PID:432
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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
46B
MD5875ffe91f13b705c9757974b4d04c18c
SHA17f820a22b2f704f0e42da461444706e70733198a
SHA25648d68bcfaed25273522d27bdcd53a6cd4a87b42a9daf36f111d63aac1beea81b
SHA5121e920469c152d1444b9f3b30acd13b04554104fe76472ec60663c64faef67fe15b244a3ed96bd32e3485be3153ab8e13eb50c3eb02fc091f9e673018d3a07065
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Filesize
263KB
MD5835fdde38be5b121f3b2a56eb368b360
SHA1336b5bb4ce70453e796dad0c27aa3c195c735fcc
SHA25656d4a754c102a6fd1efaa3cf6887360b6c5f6590971c29180e0e851c5aeef1f6
SHA5126413e75745366606ac440ef126d0bcb57ba158b3419e2faa261cbde5071dd4c009496c61560b3badacd0aca1e72140a437ea63dc4c8dbff10ca63bb05e3efcbf
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-940901362-3608833189-1915618603-1000\83aa4cc77f591dfc2374580bbd95f6ba_f2cdb6fb-4ab8-4547-9f25-fad1f7a44351
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