Analysis
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max time kernel
162s -
max time network
180s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
02/12/2022, 00:43
Static task
static1
Behavioral task
behavioral1
Sample
bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe
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Size
220KB
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MD5
bd3710d685640fb947b99a496ff3cb45
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SHA1
256a4a0a2e16c1fb31d80cf7e2f1c0ca3abda327
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SHA256
bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800
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SHA512
1b5254594f827884749344a7ea94ef9548174208ae87bdbe7004cb0fa3b0302a45435ec8e69e291958084db2c14469b9bb451c8553c6010024e4ca1bd2d35469
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SSDEEP
3072:8fOu/kr8YUL4qx9RIHgil3UuhSa3U3dD8d6Oy+MIrnj3J+Nl:cOyko15x9SHVeOj0
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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yiuko.exe -
Executes dropped EXE 1 IoCs
pid Process 2608 yiuko.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /o" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /a" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /w" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /n" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /b" yiuko.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /y" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /j" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /r" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /m" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /v" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /t" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /c" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /h" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /d" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /q" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /i" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /f" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /k" yiuko.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /z" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /g" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /s" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /e" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /p" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /l" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /u" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /x" yiuko.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yiuko = "C:\\Users\\Admin\\yiuko.exe /q" bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.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 1984 bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe 1984 bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe 2608 yiuko.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1984 bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe 2608 yiuko.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1984 wrote to memory of 2608 1984 bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe 80 PID 1984 wrote to memory of 2608 1984 bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe 80 PID 1984 wrote to memory of 2608 1984 bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.exe"C:\Users\Admin\AppData\Local\Temp\bc958f1c03ce38ef27a420ebe1f0760303b64e7ff6ec5aad30990a46cc7cd800.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:1984 -
C:\Users\Admin\yiuko.exe"C:\Users\Admin\yiuko.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:2608
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
220KB
MD5ec11400d70c60d050700fc277155ce89
SHA136f456f76e798ac27886fbe4f1a2c74702f47aa4
SHA25658820e48baab23aa43aea04474538f52d672df68c90ace36dd82a928b71678e6
SHA5127ff68773b8fe489fc443c434a2f08f7a0c1d25e3b14cfe13bbcb7eafe22488b2c38c699529939aaee8c06d94a3852c41d6a948d73b51eb9c3ab34cef8e479fc3
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Filesize
220KB
MD5ec11400d70c60d050700fc277155ce89
SHA136f456f76e798ac27886fbe4f1a2c74702f47aa4
SHA25658820e48baab23aa43aea04474538f52d672df68c90ace36dd82a928b71678e6
SHA5127ff68773b8fe489fc443c434a2f08f7a0c1d25e3b14cfe13bbcb7eafe22488b2c38c699529939aaee8c06d94a3852c41d6a948d73b51eb9c3ab34cef8e479fc3