Analysis
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max time kernel
93s -
max time network
97s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
12/11/2024, 14:00
Static task
static1
Behavioral task
behavioral1
Sample
b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe
Resource
win10v2004-20241007-en
General
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Target
b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe
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Size
777KB
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MD5
919fd5cd3f9378b6b0fbeda894563842
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SHA1
f221d9eb4ea47bca8c7042e3800c1587cf7d7e8f
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SHA256
b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725
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SHA512
ac3b18e930a826a1e922450da498fe883c4e20a825e7eecf6d5de4b2f3c51bb6f2c5d047b7bc8a82def7205488ce592d1a6d77c554848f8bdd501264ae6a81c4
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SSDEEP
24576:d6Zv2VIPp9IyTFC00OIswnS+6u4xtyk9VPJ6Bq9ZA:dE26PoyTM00OhaS+U9h63
Malware Config
Signatures
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Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{50FC559-8B9A-11D5-EBA1-F78EEEEEE983} b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{50FC559-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msgyg32.exe" b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*" b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe" b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe" b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe -
Drops file in System32 directory 6 IoCs
description ioc Process File created C:\Windows\SysWOW64\msgyg32.exe b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe File opened for modification C:\Windows\SysWOW64\msgyg32.exe b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe File created C:\Windows\SysWOW64\concp32.exe b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe File opened for modification C:\Windows\SysWOW64\concp32.exe b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe File created C:\Windows\SysWOW64\vcl32.exe b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe File opened for modification C:\Windows\SysWOW64\vcl32.exe b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe -
Program crash 1 IoCs
pid pid_target Process procid_target 3472 2372 WerFault.exe 82 -
System Location Discovery: System Language Discovery 1 TTPs 1 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 b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe -
Modifies registry class 5 IoCs
description ioc Process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50FC559-8B9A-11D5-EBA1-F78EEEEEE983}\sm = 01b8ec350471bd332433eee476ebe1f3 b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50FC559-8B9A-11D5-EBA1-F78EEEEEE983}\ax = c895db9977af5353f6861299e8dcf05b b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*" b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50FC559-8B9A-11D5-EBA1-F78EEEEEE983} b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{50FC559-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32 b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2372 b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe"C:\Users\Admin\AppData\Local\Temp\b891aef085939935dab9c2073d7fd8855a72e283df16b282c88e4eec034a5725.exe"1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:2372 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2372 -s 7002⤵
- Program crash
PID:3472
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2372 -ip 23721⤵PID:964
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Active Setup
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Change Default File Association
1Replay Monitor
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Downloads
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Filesize
778KB
MD5a2d32f09221bb4dd5d47594f7ba2fbc9
SHA13d0625d7c3fb1092bb50234d54381cd758f43521
SHA256a332730c97b319fc2b55152a271b7fbebed8fc2deac4c870b651f4026b6da228
SHA512dc6704af6117ee4851d533815d450d3da97c61d0cae4b29fa8826168be4be98adf9a5489e2808196dde68b9fb3cb51b580ee58db2097a9a4cf859791f9396309