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Analysis
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max time kernel
134s -
max time network
102s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
25/05/2024, 08:32
Static task
static1
Behavioral task
behavioral1
Sample
ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd.dll
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd.dll
Resource
win10v2004-20240508-en
General
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Target
ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd.dll
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Size
223KB
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MD5
4d59317b5920e7a93b27a4f25a08874a
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SHA1
c0bcce5fcde0a2725cab215bce675d5a5c589da0
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SHA256
ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd
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SHA512
54c24df50b682601895da373f80ffe3998a64720bd71e0f969705c5da1a2f32dda7b9a6b316ca880f23c6a59c0ca772989d8890c76b90257383b1d180b028b9b
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SSDEEP
3072:6huf5AUWGIcvWJV9agufAnAZdlGZxIOtY81fs2lQBV+UdE+rECWp7hKd22:ZBAUWG09agufYLIBV+UdvrEFp7hKd22
Malware Config
Signatures
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Modifies AppInit DLL entries 2 TTPs
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ACProtect 1.3x - 1.4x DLL software 1 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral2/files/0x000900000002328e-1.dat acprotect -
Loads dropped DLL 4 IoCs
pid Process 4644 rundll32.exe 4644 rundll32.exe 3436 WerFault.exe 4228 WerFault.exe -
resource yara_rule behavioral2/files/0x000900000002328e-1.dat upx behavioral2/memory/4644-7-0x0000000000F30000-0x0000000000F60000-memory.dmp upx behavioral2/memory/4644-6-0x0000000000F30000-0x0000000000F60000-memory.dmp upx behavioral2/memory/4644-13-0x0000000000F30000-0x0000000000F60000-memory.dmp upx -
Drops file in Program Files directory 1 IoCs
description ioc Process File created C:\Program Files\Common Files\System\symsrv.dll rundll32.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 4228 4644 WerFault.exe 83 -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4644 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1952 wrote to memory of 4644 1952 rundll32.exe 83 PID 1952 wrote to memory of 4644 1952 rundll32.exe 83 PID 1952 wrote to memory of 4644 1952 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1952 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ca91078a44ad07bf8b1d8e860ab0341481ea75ebbfb4f7cfe74039da6a4dffcd.dll,#12⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
PID:4644 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4644 -s 7003⤵
- Loads dropped DLL
- Program crash
PID:4228
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4644 -ip 46441⤵
- Loads dropped DLL
PID:3436
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
67KB
MD57574cf2c64f35161ab1292e2f532aabf
SHA114ba3fa927a06224dfe587014299e834def4644f
SHA256de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA5124db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab