Overview
overview
10Static
static
3323CANON.E...US.exe
windows7-x64
10323CANON.E...US.exe
windows10-2004-x64
10WORM_VOBFUS.exe
windows7-x64
10WORM_VOBFUS.exe
windows10-2004-x64
10WORM_VOBFUS.exe
windows7-x64
10WORM_VOBFUS.exe
windows10-2004-x64
10WORM_VOBFUS.exe
windows7-x64
7WORM_VOBFUS.exe
windows10-2004-x64
7Resubmissions
08/07/2025, 08:09
250708-j16kvavwcx 1004/07/2025, 04:30
250704-e483xsap8v 1013/05/2024, 10:29
240513-mjfjwabd28 10Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
13/05/2024, 10:29
Static task
static1
Behavioral task
behavioral1
Sample
323CANON.EXE_WORM_VOBFUS.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
323CANON.EXE_WORM_VOBFUS.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral3
Sample
WORM_VOBFUS.exe
Resource
win7-20240508-en
Behavioral task
behavioral4
Sample
WORM_VOBFUS.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral5
Sample
WORM_VOBFUS.exe
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
WORM_VOBFUS.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral7
Sample
WORM_VOBFUS.exe
Resource
win7-20240221-en
Behavioral task
behavioral8
Sample
WORM_VOBFUS.exe
Resource
win10v2004-20240226-en
General
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Target
WORM_VOBFUS.exe
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Size
212KB
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MD5
7b19b2b8aed0285eb2b2c5cb81313569
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SHA1
e0a536ed1b6c6f202412079e1213305543b533a3
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SHA256
e54bbabcaed8ace734f53234a44ad1e697e9cd2252255b59906fc5e3322c1be6
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SHA512
31f79937bb4aba8aecd95daf310c9dd22f06f4f842f4bae64502e27e44aa3ef26f25d8d72adae36f25aa4db6f7b229926dc8bda4d09613f7d1f6968a15cc2eb0
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SSDEEP
3072:/lh+mENvtRR3FmHmpF+CklMnQIKAWNBlm/XBq6ciFCdaNdVOvs:9h+NNFRRCmpF+CklMYuFciFC+Ok
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" WORM_VOBFUS.exe Set value (int) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" koiemo.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation WORM_VOBFUS.exe -
Executes dropped EXE 1 IoCs
pid Process 412 koiemo.exe -
Adds Run key to start application 2 TTPs 27 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /o" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /m" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /k" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /z" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /g" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /v" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /j" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /d" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /l" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /c" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /n" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /y" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /u" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /t" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /i" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /q" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /w" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /a" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /x" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /h" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /e" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /p" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /b" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /f" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /j" WORM_VOBFUS.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /s" koiemo.exe Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiemo = "C:\\Users\\Admin\\koiemo.exe /r" koiemo.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 1348 3940 WerFault.exe 81 -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3940 WORM_VOBFUS.exe 3940 WORM_VOBFUS.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe 412 koiemo.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3940 WORM_VOBFUS.exe 412 koiemo.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3940 wrote to memory of 412 3940 WORM_VOBFUS.exe 88 PID 3940 wrote to memory of 412 3940 WORM_VOBFUS.exe 88 PID 3940 wrote to memory of 412 3940 WORM_VOBFUS.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\WORM_VOBFUS.exe"C:\Users\Admin\AppData\Local\Temp\WORM_VOBFUS.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3940 -
C:\Users\Admin\koiemo.exe"C:\Users\Admin\koiemo.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:412
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3940 -s 14482⤵
- Program crash
PID:1348
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3940 -ip 39401⤵PID:2580
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
212KB
MD516cf87f7b73ceaa91e67b71ad90751b8
SHA1174b41c2251a917fd845e9fd58d0e918a38eb838
SHA256fc98af857f44d435f5736eb9508d3b48304c58b1b3d786ac685c179743d8d43e
SHA512707846c7b093751efbc7c531972c369ec00415454d4e1b1ee42b590c2933f9107ba74b3d83f077886473173225cd050207dac3db6ebcb142a0b8bfbf8283465e