Analysis
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max time kernel
150s -
max time network
144s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
12/11/2024, 12:12
Static task
static1
Behavioral task
behavioral1
Sample
b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe
Resource
win10v2004-20241007-en
General
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Target
b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe
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Size
237KB
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MD5
41559eb9e557f034fb2d450d931386ae
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SHA1
cebd1dec688dd47095235721941ba1ea4e293bbe
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SHA256
b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9
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SHA512
6cf7f8e109997f740b922c704f9484636e570e50cd82d41e60e4f7fe407eec6b4c0cd606388ff0a2e8f2c8b210d86e8337e501c57fee2e95437b6a361ff75f7a
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SSDEEP
6144:HD8okEvTyoZVOgd2QZiw5NLclL5orfQHF:jsjCF2QZiOU+4F
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\apppatch\\svchost.exe," svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1776 svchost.exe -
Loads dropped DLL 2 IoCs
pid Process 2420 b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe 2420 b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe -
Modifies WinLogon 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\8b122f4f = "C:\\Windows\\apppatch\\svchost.exe" b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\8b122f4f = "C:\\Windows\\apppatch\\svchost.exe" svchost.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File created C:\Windows\apppatch\svchost.exe b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe File opened for modification C:\Windows\apppatch\svchost.exe b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe -
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 b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1776 svchost.exe -
Suspicious behavior: RenamesItself 1 IoCs
pid Process 2420 b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2420 wrote to memory of 1776 2420 b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe 30 PID 2420 wrote to memory of 1776 2420 b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe 30 PID 2420 wrote to memory of 1776 2420 b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe 30 PID 2420 wrote to memory of 1776 2420 b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe"C:\Users\Admin\AppData\Local\Temp\b13ca74b39894bd5dca71ae6f9156181a9b4761cf192cdc030a204c1f928ecd9.exe"1⤵
- Loads dropped DLL
- Modifies WinLogon
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2420 -
C:\Windows\apppatch\svchost.exe"C:\Windows\apppatch\svchost.exe"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Modifies WinLogon
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1776
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
237KB
MD503cb42f3a620bee5e6d0f666c450bf8a
SHA17aa1ea7bed816c8786c883ba303db3f10d80220f
SHA2567c2c5cd99a2d7b4ba91df02b399aaffd18d6a9b6de32959671c826b2f8a92117
SHA5129587df8c59f9041e2cda4808de6988a361b4ea76f74a0c06c97c72a1147ea38bbc7b2ebef7d70e5003e435574039502f25d6712c3b889cb05ce0a5229b8a1736