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Analysis
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max time kernel
143s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
24/06/2024, 08:53
Static task
static1
Behavioral task
behavioral1
Sample
ZILCORP_POP.js
Resource
win7-20231129-en
General
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Target
ZILCORP_POP.js
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Size
424KB
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MD5
228ffb4e92fdb79da09e379168d28b7d
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SHA1
00ab295a54b2a2892dc9a178be819c8cf6648ed0
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SHA256
93b921e53498e0ce61fa8740e083f55a10d72b0b9a406cdb05a9860ffcc94eb9
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SHA512
6c3c76b0294a9a5ac2c55f03c0524d9ac5a037c5f374c1a80aa6e15d6f4f1068b65d9db0460e5d37becb06709c414c3f2c81060d76dbf7077fc46330f1b066c9
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SSDEEP
6144:XQqj5e5byQl5AQE/fGn+Z+8sE1mTzJh2gIABvxOsMUURJNOkk52dUe:g3VlS2+4vKCzbtB5Os/r2dUe
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-1-5-21-3808065738-1666277613-1125846146-1000\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\pvsjosnd.txt java.exe -
Loads dropped DLL 1 IoCs
pid Process 464 java.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3908 icacls.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pvsjosnd = "\"C:\\Users\\Admin\\AppData\\Roaming\\pvsjosnd.txt\"" java.exe Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\pvsjosnd = "\"C:\\Users\\Admin\\AppData\\Roaming\\pvsjosnd.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 3576 schtasks.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 656 wrote to memory of 1568 656 wscript.exe 92 PID 656 wrote to memory of 1568 656 wscript.exe 92 PID 1568 wrote to memory of 3908 1568 javaw.exe 93 PID 1568 wrote to memory of 3908 1568 javaw.exe 93 PID 1568 wrote to memory of 2836 1568 javaw.exe 95 PID 1568 wrote to memory of 2836 1568 javaw.exe 95 PID 2836 wrote to memory of 1808 2836 java.exe 97 PID 2836 wrote to memory of 1808 2836 java.exe 97 PID 2836 wrote to memory of 464 2836 java.exe 98 PID 2836 wrote to memory of 464 2836 java.exe 98 PID 1808 wrote to memory of 3576 1808 cmd.exe 101 PID 1808 wrote to memory of 3576 1808 cmd.exe 101 -
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\ZILCORP_POP.js1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:656 -
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\pvsjosnd.txt"2⤵
- Suspicious use of WriteProcessMemory
PID:1568 -
C:\Windows\system32\icacls.exeC:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M3⤵
- Modifies file permissions
PID:3908
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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\pvsjosnd.txt"3⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2836 -
C:\Windows\SYSTEM32\cmd.execmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\pvsjosnd.txt"4⤵
- Suspicious use of WriteProcessMemory
PID:1808 -
C:\Windows\system32\schtasks.exeschtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\pvsjosnd.txt"5⤵
- Scheduled Task/Job: Scheduled Task
PID:3576
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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\pvsjosnd.txt"4⤵
- Loads dropped DLL
PID:464
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4172 --field-trial-handle=2284,i,15722001240173834669,15048020084704567542,262144 --variations-seed-version /prefetch:81⤵PID:4716
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
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Downloads
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Filesize
46B
MD51f4536651a0e06e39536af817c9c1053
SHA195344ac887b8ee16a72ca025bfcc8b1922317c79
SHA256ea00d337398ff17b19a8a30cca937be09fb27e11806168113775cbfc1e797c12
SHA512828e1377e78c872933fa1d6d438e5b3c3472699ed8055c175c74c5e3059d906b0ee5f0b715cd020bba8603a42bf216473be6be25137f457922c390cba1f98d65
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Filesize
46B
MD5da72b899ef403bd8ef8bfad08ecfe1dc
SHA14d559c44958188f41e7fd3c15e62c54be34c8d2b
SHA256c8df4037c25f9a723c8b197f667de69ee238cf31e4b0112f618726c2ac2fd7e9
SHA5122cb31f1d70782b1c6547bc311bee653dc8d3631ddd6f79c1ca78fb7b89eaa3ac800b043a6034bbf2443c6a0afc0ea0913f84c5f2ea07db60712b6fe24e766214
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Filesize
241KB
MD5e02979ecd43bcc9061eb2b494ab5af50
SHA13122ac0e751660f646c73b10c4f79685aa65c545
SHA256a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA5121e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372
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C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3808065738-1666277613-1125846146-1000\83aa4cc77f591dfc2374580bbd95f6ba_2397ee06-28fe-4eaa-8777-f7014368c353
Filesize45B
MD5c8366ae350e7019aefc9d1e6e6a498c6
SHA15731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA25611e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA51233c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd
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Filesize
202KB
MD54c6cadc27c84e3c1cc0e0a02eedf70b4
SHA16744f248d56276d11eb2a4b72e0bf83b56088510
SHA256ea567fa68562fae02b4ca07fb22a4aab17a2970b2083c4fe65a5bad3a9324dd4
SHA512f14f1ef647b573fa016b5fb84130a18018814a00c31ce9f48dc2e701cbd693ca1655f2d76905f3cd89cdf84927708c5abefc58561991701e8028da0f927a6be3
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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