Analysis
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max time kernel
152s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
12-07-2022 09:42
Static task
static1
Behavioral task
behavioral1
Sample
4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe
Resource
win7-20220414-en
0 signatures
0 seconds
General
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Target
4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe
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Size
1.5MB
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MD5
38f191cd2eb179d75b4a9fb6b9f2cd8e
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SHA1
fe6a50d37cd8abc9791db19e9ec68029cd04743c
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SHA256
4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590
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SHA512
a48a8a1999205245b74586ce325d5d88674179e6bbe352898ef879d80e3315439260580ecba38110988954411b74ebd5bf502cdcb6bdd1ea0c9c02f88960c76a
Malware Config
Signatures
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Drops desktop.ini file(s) 2 IoCs
description ioc Process File opened for modification C:\Windows\assembly\Desktop.ini RegAsm.exe File created C:\Windows\assembly\Desktop.ini RegAsm.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1508 set thread context of 3644 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 80 -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\assembly RegAsm.exe File created C:\Windows\assembly\Desktop.ini RegAsm.exe File opened for modification C:\Windows\assembly\Desktop.ini RegAsm.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3644 RegAsm.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 3644 RegAsm.exe Token: 33 3644 RegAsm.exe Token: SeIncBasePriorityPrivilege 3644 RegAsm.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe -
Suspicious use of SendNotifyMessage 3 IoCs
pid Process 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3644 RegAsm.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1508 wrote to memory of 3644 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 80 PID 1508 wrote to memory of 3644 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 80 PID 1508 wrote to memory of 3644 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 80 PID 1508 wrote to memory of 3644 1508 4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe"C:\Users\Admin\AppData\Local\Temp\4b83c718bfb8069c2735953354587b0cf8b0b88cf5b696efc0299a96054de590.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1508 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3644
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵PID:2012