Analysis
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max time kernel
152s -
max time network
179s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
05-12-2022 09:12
Static task
static1
Behavioral task
behavioral1
Sample
dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe
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Size
200KB
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MD5
41dc8f94b3fb5c83b103528e3e0f565b
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SHA1
3bae256333ab966ee33038706234b4598dfd751e
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SHA256
dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726
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SHA512
1d1ee483d48c20ad04d438f6e0b493d5e33450e7c625fad03ee755935aed6b116df9fa004f2218aa841eeb50ca7eec5b750082459c29e1d492c97ff3f0e4db82
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SSDEEP
3072:8UHV90tQ9nLHbB9WHCS0AgTlhsp3mWEQS:d4QxL7B9WHK9Jhsp3aZ
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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" reeiju.exe -
Executes dropped EXE 1 IoCs
pid Process 2920 reeiju.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /x" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /m" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /o" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /n" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /g" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /w" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /k" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /r" reeiju.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /l" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /u" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /q" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /j" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /e" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /p" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /i" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /q" dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /h" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /v" reeiju.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /y" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /s" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /f" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /c" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /b" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /t" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /a" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /d" reeiju.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\reeiju = "C:\\Users\\Admin\\reeiju.exe /z" reeiju.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 4936 dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe 4936 dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe 2920 reeiju.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4936 dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe 2920 reeiju.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4936 wrote to memory of 2920 4936 dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe 80 PID 4936 wrote to memory of 2920 4936 dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe 80 PID 4936 wrote to memory of 2920 4936 dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.exe"C:\Users\Admin\AppData\Local\Temp\dfe818f3df5f307b47a379b8e8d3488a33986e499a479e20232595b8df27b726.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:4936 -
C:\Users\Admin\reeiju.exe"C:\Users\Admin\reeiju.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:2920
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
200KB
MD5b5faf88e1f94b99b973a1811e392e7f2
SHA1ca2ce8e9da2aaab2cd4cca3fd1d5433e56cc9007
SHA2561146a924774f524aa89a93269b88d36bc07eb4286138f6e7db94aefef3a053d6
SHA512b2e3e0f2e68a1222c9410cbaa74194c53f77278fabbdaf78943128900491adde169e6147bd385cca4c0d06e293142597b0e7dd00f7d68944464ec30c6c51a524
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Filesize
200KB
MD5b5faf88e1f94b99b973a1811e392e7f2
SHA1ca2ce8e9da2aaab2cd4cca3fd1d5433e56cc9007
SHA2561146a924774f524aa89a93269b88d36bc07eb4286138f6e7db94aefef3a053d6
SHA512b2e3e0f2e68a1222c9410cbaa74194c53f77278fabbdaf78943128900491adde169e6147bd385cca4c0d06e293142597b0e7dd00f7d68944464ec30c6c51a524