Analysis
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max time kernel
141s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
25-11-2022 09:14
Behavioral task
behavioral1
Sample
4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe
Resource
win7-20220901-en
General
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Target
4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe
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Size
111KB
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MD5
aa7feca4f942baa222d23d1c759932ca
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SHA1
a27a7c15dd2176a768f60a8fa2a05faa5a2c9970
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SHA256
4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd
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SHA512
b81b6261ab1ddb79d054753728f4bf2873d51a92a1d7dc91bcab61d6fe556a99fc78b93a007d8063b647bf0a0d322b606dbdd6213bb7f3ac197061969f6ac820
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SSDEEP
3072:bzumcXvQuDsKmmpVXAF6XhO+EV5IXVWR4c2U40s:bSmcbDs3mppAF6xOlBJVs
Malware Config
Signatures
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Drops file in System32 directory 1 IoCs
Processes:
relsel.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat relsel.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies data under HKEY_USERS 21 IoCs
Processes:
relsel.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings relsel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8D154EF9-F13D-4204-80A0-811DE0C47834}\WpadDecisionReason = "1" relsel.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-d1-f6-53-72-5c relsel.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8D154EF9-F13D-4204-80A0-811DE0C47834}\8e-d1-f6-53-72-5c relsel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-d1-f6-53-72-5c\WpadDecisionTime = e0902cd7e100d901 relsel.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings relsel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections relsel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" relsel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 relsel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8D154EF9-F13D-4204-80A0-811DE0C47834}\WpadDecisionTime = e0902cd7e100d901 relsel.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8D154EF9-F13D-4204-80A0-811DE0C47834}\WpadNetworkName = "Network 2" relsel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 relsel.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix relsel.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 relsel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8D154EF9-F13D-4204-80A0-811DE0C47834}\WpadDecision = "0" relsel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-d1-f6-53-72-5c\WpadDecision = "0" relsel.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" relsel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad relsel.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\8e-d1-f6-53-72-5c\WpadDecisionReason = "1" relsel.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" relsel.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{8D154EF9-F13D-4204-80A0-811DE0C47834} relsel.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
relsel.exepid process 552 relsel.exe 552 relsel.exe 552 relsel.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exepid process 1776 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe -
Suspicious use of UnmapMainImage 4 IoCs
Processes:
4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exerelsel.exerelsel.exepid process 1252 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe 1776 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe 580 relsel.exe 552 relsel.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exerelsel.exedescription pid process target process PID 1252 wrote to memory of 1776 1252 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe PID 1252 wrote to memory of 1776 1252 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe PID 1252 wrote to memory of 1776 1252 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe PID 1252 wrote to memory of 1776 1252 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe 4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe PID 580 wrote to memory of 552 580 relsel.exe relsel.exe PID 580 wrote to memory of 552 580 relsel.exe relsel.exe PID 580 wrote to memory of 552 580 relsel.exe relsel.exe PID 580 wrote to memory of 552 580 relsel.exe relsel.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe"C:\Users\Admin\AppData\Local\Temp\4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe"1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\4a246b13f50b0bafc9678e7b43403096c591e1e43fe8c5538405d3b567e435dd.exe--e64e412d2⤵
- Suspicious behavior: RenamesItself
- Suspicious use of UnmapMainImage
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C:\Windows\SysWOW64\relsel.exe"C:\Windows\SysWOW64\relsel.exe"1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\relsel.exe--37ba72532⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of UnmapMainImage
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/552-60-0x0000000000000000-mapping.dmp
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memory/552-62-0x0000000000400000-0x000000000041E000-memory.dmpFilesize
120KB
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memory/552-64-0x0000000000400000-0x000000000041E000-memory.dmpFilesize
120KB
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memory/1252-54-0x0000000000220000-0x0000000000231000-memory.dmpFilesize
68KB
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memory/1252-56-0x0000000000220000-0x0000000000231000-memory.dmpFilesize
68KB
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memory/1252-57-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/1776-55-0x0000000000000000-mapping.dmp
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memory/1776-58-0x0000000000400000-0x000000000041E000-memory.dmpFilesize
120KB
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memory/1776-59-0x0000000074DE1000-0x0000000074DE3000-memory.dmpFilesize
8KB
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memory/1776-61-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB