Analysis
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max time kernel
152s -
max time network
194s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 03:20
Static task
static1
Behavioral task
behavioral1
Sample
4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe
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Size
100KB
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MD5
03e9d31fe2f7b376c48b316e4b09ce3b
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SHA1
6dd978096e2ac309782cec308f10871bbfbf16a9
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SHA256
4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df
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SHA512
d90226b08f0f80c9710ba26ac72bae12453554798531e4acc195c3c32b228a72a299f6810610783404f0654b8a2249ff184ed4ed9ee0f20e2d1ca1d31a88737e
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SSDEEP
1536:jwWbcX220mQjVxJKIRGWcOUP7vXArnY1ZqAefzyesdNIjnZjJ:kPQjQNAfzye6CnRJ
Score
10/10
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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe Set value (int) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" koiep.exe -
Executes dropped EXE 1 IoCs
pid Process 2652 koiep.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe -
Adds Run key to start application 2 TTPs 46 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /E" 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /G" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /O" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /l" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /j" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /X" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /I" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /p" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /R" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /W" koiep.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run\ koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /H" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /c" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /n" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /A" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /y" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /J" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /z" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /w" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /Q" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /C" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /Z" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /a" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /b" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /V" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /N" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /M" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /v" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /o" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /K" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /d" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /g" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /T" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /f" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /k" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /i" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /D" koiep.exe Key created \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /S" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /h" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /B" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /F" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /Y" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /E" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /t" koiep.exe Set value (str) \REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\koiep = "C:\\Users\\Admin\\koiep.exe /m" koiep.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1092 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe 1092 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe 2652 koiep.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1092 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe 2652 koiep.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 1092 wrote to memory of 2652 1092 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe 88 PID 1092 wrote to memory of 2652 1092 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe 88 PID 1092 wrote to memory of 2652 1092 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe 88 PID 1092 wrote to memory of 2652 1092 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe 88 PID 1092 wrote to memory of 2652 1092 4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.exe"C:\Users\Admin\AppData\Local\Temp\4f5cf2d4b49443dcdb8db5b32adaf1f218e692866257887224a52ae39e3676df.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:1092 -
C:\Users\Admin\koiep.exe"C:\Users\Admin\koiep.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:2652
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
100KB
MD545109241c965f30b21a484b2074b2dc3
SHA15136b4092eed749588433827439edb9b2c5dc1d2
SHA256ccdc41472895d197715d376885937730efb5995c6b2ceb9eed1275cf08e2dd88
SHA51292c398e822cbdc471201eb9777b7fd45aa18ab21c4c14076ca38e45d84f92ea17841c8c97784f1ea62b4700325281f498a0968bf89d68407f1d1312ff5891ef1
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Filesize
100KB
MD545109241c965f30b21a484b2074b2dc3
SHA15136b4092eed749588433827439edb9b2c5dc1d2
SHA256ccdc41472895d197715d376885937730efb5995c6b2ceb9eed1275cf08e2dd88
SHA51292c398e822cbdc471201eb9777b7fd45aa18ab21c4c14076ca38e45d84f92ea17841c8c97784f1ea62b4700325281f498a0968bf89d68407f1d1312ff5891ef1