Analysis
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max time kernel
127s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20231023-en -
resource tags
arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system -
submitted
26-10-2023 07:05
Behavioral task
behavioral1
Sample
Delivery Information GCBAC71854_PDF.jar
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
Delivery Information GCBAC71854_PDF.jar
Resource
win10v2004-20231023-en
General
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Target
Delivery Information GCBAC71854_PDF.jar
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Size
182KB
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MD5
8b6d2e8ee9fb29b4095d861acbfa96f7
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SHA1
11189463a1f8558e688366fd47f6febfce3eb49b
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SHA256
6d641ee8729ed4c218ef958b79eef3729ec6317b7da31a41803407f41b68337a
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SHA512
944503c36f2358be6c1cf0c27166a1d3898a79b31081df36d61e4ff2101aa3f21d405df6c4217a8266bc1287abe753bd5e08d080e4e42e164cfe1b278e91176b
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SSDEEP
3072:zJjFn28eIl0XnNS87YO/YGHcTpVxjNVhp+K0dMfYDIO6LS/wxfs3Fl3ypGk04ADe:zJklXN7YAYgIpVbVhAndMf4p6LNGFl3+
Malware Config
Signatures
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Modifies file permissions 1 TTPs 1 IoCs
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Drops file in Program Files directory 12 IoCs
Processes:
java.exedescription ioc process File opened for modification C:\Program Files\Java\jre-1.8\bin\jvm.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\symbols\dll\jvm.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\server\dll\ntdll.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\ntdll.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\symbols\dll\ntdll.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\jvm.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\server\dll\jvm.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\dll\jvm.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\server\ntdll.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\ntdll.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\dll\ntdll.pdb java.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\server\jvm.pdb java.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
java.exedescription pid process target process PID 4324 wrote to memory of 1888 4324 java.exe icacls.exe PID 4324 wrote to memory of 1888 4324 java.exe icacls.exe
Processes
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C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exejava -jar "C:\Users\Admin\AppData\Local\Temp\Delivery Information GCBAC71854_PDF.jar"1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:4324 -
C:\Windows\system32\icacls.exeC:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M2⤵
- Modifies file permissions
PID:1888
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46B
MD5688460d94a92032519419e979da46583
SHA1eae7cf78c71cc2b854cf990858780af7f9e53479
SHA2564121e75e18a42503915d728dfc14b8b1cf61034c8d19382de6ac0d759af1f6e9
SHA512f3bae1b4f2e9de96d10c8badf394151b89b37fe827430de778efdfa4a6a07bb8aba09e26bef33e64826b5b2cb0cd3d8a73de25558718b113cb09c7c1fb3df0e0