Analysis
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max time kernel
94s -
max time network
95s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
03/10/2024, 22:01
Static task
static1
Behavioral task
behavioral1
Sample
76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2acebN.dll
Resource
win7-20240903-en
General
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Target
76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2acebN.dll
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Size
258KB
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MD5
fe245609196ce4266a2e2105b6bafac0
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SHA1
8f878a52f96c493a2cd3924fd87f2e867cc3ca2d
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SHA256
76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2aceb
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SHA512
7267e1db624800c1c1ac5c7db4a02ddb7a0ac9d148af2b232c0c5ce85bd90fb96c060d9b7f064fed1aa547b1eebab4fb2b6c9d54d9b47c6455cb82a4d3c0277d
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SSDEEP
3072:rwDmd9B62lcxtzCqc5ZyTvmhRQnuWAs4Jln5jX8KSOmBeMrm9slo0aof87:f98xtzM5QrmhR/Vln5jMKayuGPe87
Malware Config
Signatures
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Executes dropped EXE 2 IoCs
pid Process 4132 rundll32mgr.exe 2564 rundll32mgr.exe -
Loads dropped DLL 1 IoCs
pid Process 2564 rundll32mgr.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 4132 set thread context of 2564 4132 rundll32mgr.exe 84 -
resource yara_rule behavioral2/memory/2564-13-0x0000000000400000-0x0000000000463000-memory.dmp upx behavioral2/memory/2564-15-0x0000000000400000-0x0000000000463000-memory.dmp upx behavioral2/memory/2564-14-0x0000000000400000-0x0000000000463000-memory.dmp upx behavioral2/memory/2564-9-0x0000000000400000-0x0000000000463000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 1580 2564 WerFault.exe 84 -
System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32mgr.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4132 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1148 wrote to memory of 1192 1148 rundll32.exe 82 PID 1148 wrote to memory of 1192 1148 rundll32.exe 82 PID 1148 wrote to memory of 1192 1148 rundll32.exe 82 PID 1192 wrote to memory of 4132 1192 rundll32.exe 83 PID 1192 wrote to memory of 4132 1192 rundll32.exe 83 PID 1192 wrote to memory of 4132 1192 rundll32.exe 83 PID 4132 wrote to memory of 2564 4132 rundll32mgr.exe 84 PID 4132 wrote to memory of 2564 4132 rundll32mgr.exe 84 PID 4132 wrote to memory of 2564 4132 rundll32mgr.exe 84 PID 4132 wrote to memory of 2564 4132 rundll32mgr.exe 84 PID 4132 wrote to memory of 2564 4132 rundll32mgr.exe 84 PID 4132 wrote to memory of 2564 4132 rundll32mgr.exe 84 PID 4132 wrote to memory of 2564 4132 rundll32mgr.exe 84 PID 4132 wrote to memory of 2564 4132 rundll32mgr.exe 84
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2acebN.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1148 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2acebN.dll,#12⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1192 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4132 -
C:\Windows\SysWOW64\rundll32mgr.exe"C:\Windows\SysWOW64\rundll32mgr.exe"4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2564 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2564 -s 3045⤵
- Program crash
PID:1580
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2564 -ip 25641⤵PID:1180
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD54f3387277ccbd6d1f21ac5c07fe4ca68
SHA1e16506f662dc92023bf82def1d621497c8ab5890
SHA256767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA5129da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219
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Filesize
148KB
MD5a758bae992041958e59e16e303fccb6e
SHA1ed836b5a0d9af7107b86969691078bf9eebf9a3c
SHA256393f0b4ef739ec6b1f6eb242586d40e7d927211d6c6100fa1f3642a76a83b615
SHA5128e4efadbe72e6a6eec55a81d075fc903c32f46ca950989c7029c3df3bb6a7adef97d69bbc5d93fff38dc5aed18fa011efbb31d39f440f2003b73ff5a280bf48a