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Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20250211-en -
resource tags
arch:x64arch:x86image:win10v2004-20250211-enlocale:en-usos:windows10-2004-x64system -
submitted
11/02/2025, 17:32
Behavioral task
behavioral1
Sample
KYNIX 24255.jar
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
KYNIX 24255.jar
Resource
win10v2004-20250211-en
General
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Target
KYNIX 24255.jar
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Size
270KB
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MD5
c48786041bfbc49cd7a4ac809e1f89fb
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SHA1
9f4c00809b5f9fd270f6568c9388bfff11b4aa98
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SHA256
9b06f513705fd1f58888d74326cfb7c37daa41855e977ceb103e929398dab233
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SHA512
fa4d9b613dbf6b03ab758d413d7d8aa415e833b5556858b0d6cb4294f1c082205fa260b9b05dc76feb474bc8cc3ce61e39c27adc5f5236ca2b986b0a9c082163
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SSDEEP
6144:emTpRn5nfSWk9dPUQDytmwdj1AyWKnwwSK1K:3Rn5fSWk9dNidj1lVFK
Malware Config
Extracted
strrat
176.65.139.53:1999
127.0.0.1:1999
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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\KYNIX 24255.jar java.exe -
Loads dropped DLL 1 IoCs
pid Process 3812 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2508704002-2325818048-3575902788-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KYNIX 24255 = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\KYNIX 24255.jar\"" java.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KYNIX 24255 = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\KYNIX 24255.jar\"" java.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 20 ip-api.com -
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 2912 schtasks.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 536 WMIC.exe Token: SeSecurityPrivilege 536 WMIC.exe Token: SeTakeOwnershipPrivilege 536 WMIC.exe Token: SeLoadDriverPrivilege 536 WMIC.exe Token: SeSystemProfilePrivilege 536 WMIC.exe Token: SeSystemtimePrivilege 536 WMIC.exe Token: SeProfSingleProcessPrivilege 536 WMIC.exe Token: SeIncBasePriorityPrivilege 536 WMIC.exe Token: SeCreatePagefilePrivilege 536 WMIC.exe Token: SeBackupPrivilege 536 WMIC.exe Token: SeRestorePrivilege 536 WMIC.exe Token: SeShutdownPrivilege 536 WMIC.exe Token: SeDebugPrivilege 536 WMIC.exe Token: SeSystemEnvironmentPrivilege 536 WMIC.exe Token: SeRemoteShutdownPrivilege 536 WMIC.exe Token: SeUndockPrivilege 536 WMIC.exe Token: SeManageVolumePrivilege 536 WMIC.exe Token: 33 536 WMIC.exe Token: 34 536 WMIC.exe Token: 35 536 WMIC.exe Token: 36 536 WMIC.exe Token: SeIncreaseQuotaPrivilege 536 WMIC.exe Token: SeSecurityPrivilege 536 WMIC.exe Token: SeTakeOwnershipPrivilege 536 WMIC.exe Token: SeLoadDriverPrivilege 536 WMIC.exe Token: SeSystemProfilePrivilege 536 WMIC.exe Token: SeSystemtimePrivilege 536 WMIC.exe Token: SeProfSingleProcessPrivilege 536 WMIC.exe Token: SeIncBasePriorityPrivilege 536 WMIC.exe Token: SeCreatePagefilePrivilege 536 WMIC.exe Token: SeBackupPrivilege 536 WMIC.exe Token: SeRestorePrivilege 536 WMIC.exe Token: SeShutdownPrivilege 536 WMIC.exe Token: SeDebugPrivilege 536 WMIC.exe Token: SeSystemEnvironmentPrivilege 536 WMIC.exe Token: SeRemoteShutdownPrivilege 536 WMIC.exe Token: SeUndockPrivilege 536 WMIC.exe Token: SeManageVolumePrivilege 536 WMIC.exe Token: 33 536 WMIC.exe Token: 34 536 WMIC.exe Token: 35 536 WMIC.exe Token: 36 536 WMIC.exe Token: SeIncreaseQuotaPrivilege 4504 WMIC.exe Token: SeSecurityPrivilege 4504 WMIC.exe Token: SeTakeOwnershipPrivilege 4504 WMIC.exe Token: SeLoadDriverPrivilege 4504 WMIC.exe Token: SeSystemProfilePrivilege 4504 WMIC.exe Token: SeSystemtimePrivilege 4504 WMIC.exe Token: SeProfSingleProcessPrivilege 4504 WMIC.exe Token: SeIncBasePriorityPrivilege 4504 WMIC.exe Token: SeCreatePagefilePrivilege 4504 WMIC.exe Token: SeBackupPrivilege 4504 WMIC.exe Token: SeRestorePrivilege 4504 WMIC.exe Token: SeShutdownPrivilege 4504 WMIC.exe Token: SeDebugPrivilege 4504 WMIC.exe Token: SeSystemEnvironmentPrivilege 4504 WMIC.exe Token: SeRemoteShutdownPrivilege 4504 WMIC.exe Token: SeUndockPrivilege 4504 WMIC.exe Token: SeManageVolumePrivilege 4504 WMIC.exe Token: 33 4504 WMIC.exe Token: 34 4504 WMIC.exe Token: 35 4504 WMIC.exe Token: 36 4504 WMIC.exe Token: SeIncreaseQuotaPrivilege 4504 WMIC.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 376 wrote to memory of 2832 376 java.exe 89 PID 376 wrote to memory of 2832 376 java.exe 89 PID 2832 wrote to memory of 4020 2832 java.exe 91 PID 2832 wrote to memory of 4020 2832 java.exe 91 PID 2832 wrote to memory of 3812 2832 java.exe 92 PID 2832 wrote to memory of 3812 2832 java.exe 92 PID 4020 wrote to memory of 2912 4020 cmd.exe 95 PID 4020 wrote to memory of 2912 4020 cmd.exe 95 PID 3812 wrote to memory of 2512 3812 java.exe 96 PID 3812 wrote to memory of 2512 3812 java.exe 96 PID 2512 wrote to memory of 536 2512 cmd.exe 98 PID 2512 wrote to memory of 536 2512 cmd.exe 98 PID 3812 wrote to memory of 1968 3812 java.exe 100 PID 3812 wrote to memory of 1968 3812 java.exe 100 PID 1968 wrote to memory of 4504 1968 cmd.exe 102 PID 1968 wrote to memory of 4504 1968 cmd.exe 102 PID 3812 wrote to memory of 3064 3812 java.exe 103 PID 3812 wrote to memory of 3064 3812 java.exe 103 PID 3064 wrote to memory of 4080 3064 cmd.exe 105 PID 3064 wrote to memory of 4080 3064 cmd.exe 105 PID 3812 wrote to memory of 3148 3812 java.exe 106 PID 3812 wrote to memory of 3148 3812 java.exe 106 PID 3148 wrote to memory of 5116 3148 cmd.exe 108 PID 3148 wrote to memory of 5116 3148 cmd.exe 108 -
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\KYNIX 24255.jar"1⤵
- Suspicious use of WriteProcessMemory
PID:376 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\KYNIX 24255.jar"2⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2832 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\KYNIX 24255.jar"3⤵
- Suspicious use of WriteProcessMemory
PID:4020 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\KYNIX 24255.jar"4⤵
- Scheduled Task/Job: Scheduled Task
PID:2912
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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\KYNIX 24255.jar"3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3812 -
C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"4⤵
- Suspicious use of WriteProcessMemory
PID:2512 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list5⤵
- Suspicious use of AdjustPrivilegeToken
PID:536
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"4⤵
- Suspicious use of WriteProcessMemory
PID:1968 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list5⤵
- Suspicious use of AdjustPrivilegeToken
PID:4504
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"4⤵
- Suspicious use of WriteProcessMemory
PID:3064 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list5⤵PID:4080
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C:\Windows\SYSTEM32\cmd.execmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"4⤵
- Suspicious use of WriteProcessMemory
PID:3148 -
C:\Windows\System32\Wbem\WMIC.exewmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list5⤵PID:5116
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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
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2508704002-2325818048-3575902788-1000\83aa4cc77f591dfc2374580bbd95f6ba_1eefde30-3eae-49e6-8887-f6fb7b1c7c94
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
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Filesize
270KB
MD5c48786041bfbc49cd7a4ac809e1f89fb
SHA19f4c00809b5f9fd270f6568c9388bfff11b4aa98
SHA2569b06f513705fd1f58888d74326cfb7c37daa41855e977ceb103e929398dab233
SHA512fa4d9b613dbf6b03ab758d413d7d8aa415e833b5556858b0d6cb4294f1c082205fa260b9b05dc76feb474bc8cc3ce61e39c27adc5f5236ca2b986b0a9c082163
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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