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Analysis
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max time kernel
118s -
max time network
98s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
10/11/2024, 15:44
Behavioral task
behavioral1
Sample
b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe
Resource
win7-20240903-en
8 signatures
120 seconds
General
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Target
b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe
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Size
49KB
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MD5
90cdffde5a6c8b7d151138e740afd190
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SHA1
1a805cf261ec08831a6ecbcc875ea9c296908753
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SHA256
b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304f
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SHA512
7206444839c1c1196013715b26d73100c0949d11b888d667e6457d433c3203596d970469ccf751f79ac1eb9b7661836bf82c83ee792f5b450d11b83c72ff34e9
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SSDEEP
1536:XOBLXNqgzf2v6b6NkXklZlogHGe9eBXW:XYLduv6OqXIlogmjW
Malware Config
Signatures
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Tinba family
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B5045907 = "C:\\Users\\Admin\\AppData\\Roaming\\B5045907\\bin.exe" winver.exe -
resource yara_rule behavioral2/memory/3868-0-0x0000000000400000-0x000000000041D000-memory.dmp upx -
Program crash 1 IoCs
pid pid_target Process procid_target 4784 5096 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 winver.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ Explorer.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 5096 winver.exe 5096 winver.exe -
Suspicious use of AdjustPrivilegeToken 10 IoCs
description pid Process Token: SeShutdownPrivilege 3432 Explorer.EXE Token: SeCreatePagefilePrivilege 3432 Explorer.EXE Token: SeShutdownPrivilege 3432 Explorer.EXE Token: SeCreatePagefilePrivilege 3432 Explorer.EXE Token: SeShutdownPrivilege 3432 Explorer.EXE Token: SeCreatePagefilePrivilege 3432 Explorer.EXE Token: SeShutdownPrivilege 3432 Explorer.EXE Token: SeCreatePagefilePrivilege 3432 Explorer.EXE Token: SeShutdownPrivilege 3432 Explorer.EXE Token: SeCreatePagefilePrivilege 3432 Explorer.EXE -
Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 5096 winver.exe 3432 Explorer.EXE 3432 Explorer.EXE -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 3432 Explorer.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3868 wrote to memory of 5096 3868 b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe 84 PID 3868 wrote to memory of 5096 3868 b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe 84 PID 3868 wrote to memory of 5096 3868 b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe 84 PID 3868 wrote to memory of 5096 3868 b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe 84 PID 5096 wrote to memory of 3432 5096 winver.exe 56 PID 5096 wrote to memory of 3000 5096 winver.exe 50
Processes
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C:\Windows\system32\sihost.exesihost.exe1⤵PID:3000
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
PID:3432 -
C:\Users\Admin\AppData\Local\Temp\b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe"C:\Users\Admin\AppData\Local\Temp\b91eedc0ba078bad00660ca176bb44bae29ee34831ae5aff47e0e2a01912304fN.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3868 -
C:\Windows\SysWOW64\winver.exewinver3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5096 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 3564⤵
- Program crash
PID:4784
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 5096 -ip 50961⤵PID:3156