Analysis
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max time kernel
30s -
max time network
17s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
20-09-2024 23:54
Static task
static1
Behavioral task
behavioral1
Sample
ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe
Resource
win10v2004-20240802-en
General
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Target
ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe
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Size
96KB
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MD5
edf933253b981d8eed9b0a21867cfcb6
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SHA1
d304fd047dc65dc1bb14c8c01838c9544b28dc69
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SHA256
ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760
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SHA512
81ccc5e98142194a354873119369cbf6928093be91f9835d754bb3120a2b2588f7beb011a0ffa656f92e502b161d6bb0eb4c190e9fd0d2b2f507a3e9672bbc87
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SSDEEP
1536:gWQE6I4tGxys2y5KUhQVkzjtREZBpipNK3YTjkgzOM6bOLXi8PmCofGy:gxNYy2hQVszEoRzDrLXfzoey
Malware Config
Signatures
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Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\Web Event Logger = "{79FAA099-1BAE-816E-D711-115290CEE717}" ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe -
Executes dropped EXE 1 IoCs
pid Process 1652 Bmenijcd.exe -
Loads dropped DLL 6 IoCs
pid Process 1756 ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe 1756 ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe 2000 WerFault.exe 2000 WerFault.exe 2000 WerFault.exe 2000 WerFault.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\Bmenijcd.exe ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe File opened for modification C:\Windows\SysWOW64\Bmenijcd.exe ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe File created C:\Windows\SysWOW64\Diflambo.dll ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 2000 1652 WerFault.exe 30 -
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 ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Bmenijcd.exe -
Modifies registry class 6 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717} ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32\ = "C:\\Windows\\SysWow64\\Diflambo.dll" ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32\ThreadingModel = "Apartment" ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{79FAA099-1BAE-816E-D711-115290CEE717}\InProcServer32 ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1756 wrote to memory of 1652 1756 ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe 30 PID 1756 wrote to memory of 1652 1756 ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe 30 PID 1756 wrote to memory of 1652 1756 ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe 30 PID 1756 wrote to memory of 1652 1756 ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe 30 PID 1652 wrote to memory of 2000 1652 Bmenijcd.exe 31 PID 1652 wrote to memory of 2000 1652 Bmenijcd.exe 31 PID 1652 wrote to memory of 2000 1652 Bmenijcd.exe 31 PID 1652 wrote to memory of 2000 1652 Bmenijcd.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe"C:\Users\Admin\AppData\Local\Temp\ffc97b0213c8a7c8fe8c37c40b7e45f67874a7c669d3875550d0c55db0215760.exe"1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Windows\SysWOW64\Bmenijcd.exeC:\Windows\system32\Bmenijcd.exe2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1652 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 1403⤵
- Loads dropped DLL
- Program crash
PID:2000
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
96KB
MD571fcc8e28cad1d5e01d79786428b323b
SHA138b63881746947b5df91e3130ceaa9e599901c09
SHA25653a0020a4e3ba2a2ec7f23b1c8b85e40118ba8d6070ff9ec04584ece91a58df7
SHA51226c5e65afeea98520e7c066aad60cfcd14cf6ed2d0e6d414041fe0f09b3193a4122f317723fdb45bd8008bf89b6e92b285ec4f104bbec3132cca6f2264e73580