Analysis
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max time kernel
73s -
max time network
17s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 2844 rundll32mgr.exe 2684 rundll32mgr.exe -
Loads dropped DLL 5 IoCs
pid Process 2184 rundll32.exe 2184 rundll32.exe 2844 rundll32mgr.exe 2684 rundll32mgr.exe 2684 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 2844 set thread context of 2684 2844 rundll32mgr.exe 33 -
resource yara_rule behavioral1/memory/2684-21-0x0000000000400000-0x0000000000463000-memory.dmp upx behavioral1/memory/2684-26-0x0000000000400000-0x0000000000463000-memory.dmp upx behavioral1/memory/2684-30-0x0000000000400000-0x0000000000463000-memory.dmp upx behavioral1/memory/2684-25-0x0000000000400000-0x0000000000463000-memory.dmp upx behavioral1/memory/2684-24-0x0000000000400000-0x0000000000463000-memory.dmp upx behavioral1/memory/2684-42-0x0000000000400000-0x0000000000463000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 2672 2684 WerFault.exe 33 -
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 2844 rundll32mgr.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2148 wrote to memory of 2184 2148 rundll32.exe 31 PID 2148 wrote to memory of 2184 2148 rundll32.exe 31 PID 2148 wrote to memory of 2184 2148 rundll32.exe 31 PID 2148 wrote to memory of 2184 2148 rundll32.exe 31 PID 2148 wrote to memory of 2184 2148 rundll32.exe 31 PID 2148 wrote to memory of 2184 2148 rundll32.exe 31 PID 2148 wrote to memory of 2184 2148 rundll32.exe 31 PID 2184 wrote to memory of 2844 2184 rundll32.exe 32 PID 2184 wrote to memory of 2844 2184 rundll32.exe 32 PID 2184 wrote to memory of 2844 2184 rundll32.exe 32 PID 2184 wrote to memory of 2844 2184 rundll32.exe 32 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33 PID 2844 wrote to memory of 2684 2844 rundll32mgr.exe 33
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:2148 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\76bed869ea5c171ad0dd786c3b75ff8c5290934fabf9a3c3ac5b977935a2acebN.dll,#12⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2184 -
C:\Windows\SysWOW64\rundll32mgr.exeC:\Windows\SysWOW64\rundll32mgr.exe3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2844 -
C:\Windows\SysWOW64\rundll32mgr.exe"C:\Windows\SysWOW64\rundll32mgr.exe"4⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2684 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 1005⤵
- Program crash
PID:2672
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.2MB
MD5d124f55b9393c976963407dff51ffa79
SHA12c7bbedd79791bfb866898c85b504186db610b5d
SHA256ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06
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Filesize
1.1MB
MD59b98d47916ead4f69ef51b56b0c2323c
SHA1290a80b4ded0efc0fd00816f373fcea81a521330
SHA25696e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b
SHA51268b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94
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Filesize
148KB
MD5a758bae992041958e59e16e303fccb6e
SHA1ed836b5a0d9af7107b86969691078bf9eebf9a3c
SHA256393f0b4ef739ec6b1f6eb242586d40e7d927211d6c6100fa1f3642a76a83b615
SHA5128e4efadbe72e6a6eec55a81d075fc903c32f46ca950989c7029c3df3bb6a7adef97d69bbc5d93fff38dc5aed18fa011efbb31d39f440f2003b73ff5a280bf48a