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Analysis
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max time kernel
149s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
21/09/2024, 06:38
Static task
static1
Behavioral task
behavioral1
Sample
ef3f13667597ce1b7ba2e2d966918609_JaffaCakes118.js
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
ef3f13667597ce1b7ba2e2d966918609_JaffaCakes118.js
Resource
win10v2004-20240802-en
General
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Target
ef3f13667597ce1b7ba2e2d966918609_JaffaCakes118.js
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Size
183KB
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MD5
ef3f13667597ce1b7ba2e2d966918609
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SHA1
c4b9b27739149475dd718813e3bc05b68af2f11f
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SHA256
ea0d1df8f246470f17fde59c5ed6e866a813b07890de8dcd9932909a3825857e
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SHA512
85018f8fb24e0793e39b8b9c872fb04dd792aa057a7af0146095d5dc17fa3e2181d4edcd067314b3b271870186edcbe6f39de0640d9b97b54629f377268d900d
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SSDEEP
3072:KK9pI8Ly5wq/sp6lOAbftWRLXkXme/IMh+LnVqUfaBoslG4RB7hVARDdjae5N5P:KKXZLy5z/rlOAbCbk2noUfaoSGeyN5P
Malware Config
Signatures
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation wscript.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cruggjbhb.txt java.exe -
Loads dropped DLL 2 IoCs
pid Process 3640 java.exe 2112 java.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cruggjbhb = "\"C:\\Users\\Admin\\AppData\\Roaming\\cruggjbhb.txt\"" java.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cruggjbhb = "\"C:\\Users\\Admin\\AppData\\Roaming\\cruggjbhb.txt\"" java.exe -
Command and Scripting Interpreter: JavaScript 1 TTPs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 2324 schtasks.exe -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 4404 wrote to memory of 2416 4404 wscript.exe 82 PID 4404 wrote to memory of 2416 4404 wscript.exe 82 PID 2416 wrote to memory of 3640 2416 javaw.exe 87 PID 2416 wrote to memory of 3640 2416 javaw.exe 87 PID 3640 wrote to memory of 1548 3640 java.exe 90 PID 3640 wrote to memory of 1548 3640 java.exe 90 PID 3640 wrote to memory of 2112 3640 java.exe 91 PID 3640 wrote to memory of 2112 3640 java.exe 91 PID 1548 wrote to memory of 2324 1548 cmd.exe 94 PID 1548 wrote to memory of 2324 1548 cmd.exe 94 -
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:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\ef3f13667597ce1b7ba2e2d966918609_JaffaCakes118.js1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4404 -
C:\Program Files\Java\jre-1.8\bin\javaw.exe"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\cruggjbhb.txt"2⤵
- Suspicious use of WriteProcessMemory
PID:2416 -
C:\Program Files\Java\jre-1.8\bin\java.exe"C:\Program Files\Java\jre-1.8\bin\java.exe" -jar "C:\Users\Admin\cruggjbhb.txt"3⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3640 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\cruggjbhb.txt"4⤵
- Suspicious use of WriteProcessMemory
PID:1548 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\cruggjbhb.txt"5⤵
- Scheduled Task/Job: Scheduled Task
PID:2324
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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\cruggjbhb.txt"4⤵
- Loads dropped DLL
PID:2112
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1JavaScript
1Scheduled Task/Job
1Scheduled Task
1Persistence
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
MD53d2a39eb9101c7e7f0771f2135c140a4
SHA1d62b435b03b124cafd6d8cd20194bc648cad153c
SHA25619f6b50ba4256a8fe5c7fba9fe9728b8b853f14e7b3abf9539820703c9aed31a
SHA512954e2ca2c2ea912f81d46c9f3d36bb485b9c2cb52d9e7120f9166a643c7303f13332d838e4ed5feef6dcd6fb4409a0aa42bfd8af5773765023c382b0f059a603
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Filesize
46B
MD51b5925366191e262c4766755add0d223
SHA1fbc8eafe3cf234f21fc8d9661c6865c737307a94
SHA2564ad18db20ce0ad20361fc567077ae21157c06521b4372d5f6b4afec6df4de316
SHA5124a8c10ce95b6e78f2175fa106052add66f0ead270cfc04950d43d96dbfe4b49d1c4aff695e13ea39c990e9bedae66e0dd9d2cc189888c6dbaea1923f7b3e2b26
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-945322488-2060912225-3527527000-1000\83aa4cc77f591dfc2374580bbd95f6ba_03d68389-5a68-4d9e-92ac-47b927e624dd
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
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Filesize
92KB
MD59f529d816bffd28587755104a62e7ffe
SHA12ced260d71011c450dab5145881fad5460d00edb
SHA2567bd8097de078f21e7f97dc04fac6ed6a4d7bc042934e2ec179706838303efe2f
SHA512ccb1437c4fc7465bfdd62e5a7556a13f2bbebafe73e6c545a0125fe0289e833928b6c9f61ce36102ea107a6054f6ac738fae81ac068555fc500f1df15ac6baab
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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