Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
18-07-2024 15:46
Static task
static1
Behavioral task
behavioral1
Sample
3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar
Resource
win10v2004-20240709-en
General
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Target
3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar
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Size
400KB
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MD5
863973f0d6b66b27bdb617c57a956b42
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SHA1
477b46c19bccc5143a71e057c0240a4ea87ca391
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SHA256
3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1
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SHA512
18148d1f0bc7059e0e3a24ef58ce46780e62ed6ddf01e044c0c23594c6a7c82046faafdfdc5803644fe08ac670bed31bd2efcab654498a51d8beda0f832f8800
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SSDEEP
12288:SBjSHT45m51JD5A1v7V355qjcVJP9iNe9:StWT45weBpDP9Qk
Malware Config
Signatures
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Loads dropped DLL 1 IoCs
pid Process 632 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1 = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar\"" java.exe Set value (str) \REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1 = "\"C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.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 3284 schtasks.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4308 wrote to memory of 4844 4308 java.exe 92 PID 4308 wrote to memory of 4844 4308 java.exe 92 PID 4844 wrote to memory of 3776 4844 java.exe 94 PID 4844 wrote to memory of 3776 4844 java.exe 94 PID 4844 wrote to memory of 632 4844 java.exe 95 PID 4844 wrote to memory of 632 4844 java.exe 95 PID 3776 wrote to memory of 3284 3776 cmd.exe 98 PID 3776 wrote to memory of 3284 3776 cmd.exe 98 -
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\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar1⤵
- Suspicious use of WriteProcessMemory
PID:4308 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar"2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4844 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar"3⤵
- Suspicious use of WriteProcessMemory
PID:3776 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar"4⤵
- Scheduled Task/Job: Scheduled Task
PID:3284
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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\3a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1.jar"3⤵
- Loads dropped DLL
PID:632
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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
MD5ccff25972e306c8cd493078c1f687c01
SHA1592df095e819c7a36b369a11b4767a00aa131a22
SHA25673953c10c64fa010ba8835bae9932e5176a5be2911348bd50a83b63c416df20d
SHA51263004d0dde8f421af46ddc299030145881155ee815004e77b3c74be9b98445b2c71f6fd706189d577bea69c582194c5853e77d47979db9a26abf5cd8de543a2e
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Filesize
46B
MD56246ee51e1c0dfb00c50ab12573f83c9
SHA128ba6d314953027f49b9520933fa422b7c62e3b0
SHA25658b512ad3a79b775f47fcf15634cf7671c8afe92626473b65b1d7a0a4574f4ae
SHA5125009d92620f573594b74b78c2a501b5158c7bb78af852f2edf09c40c16b1c31fee48e5cb829ba2b494f0de5509480ee31c4dbc181b6974150b9f2ce5dfdabf06
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Filesize
400KB
MD5863973f0d6b66b27bdb617c57a956b42
SHA1477b46c19bccc5143a71e057c0240a4ea87ca391
SHA2563a2d31eb696b7d885e6e9ca633bddd2672950f65d8349577ecb44413366571d1
SHA51218148d1f0bc7059e0e3a24ef58ce46780e62ed6ddf01e044c0c23594c6a7c82046faafdfdc5803644fe08ac670bed31bd2efcab654498a51d8beda0f832f8800
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1705699165-553239100-4129523827-1000\83aa4cc77f591dfc2374580bbd95f6ba_26cbe02e-c538-45f2-be7b-5c1ca47e55b2
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