Analysis
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max time kernel
148s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
29-01-2023 18:17
Behavioral task
behavioral1
Sample
80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe
Resource
win7-20220812-en
General
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Target
80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe
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Size
138KB
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MD5
4bfababf12701adf400d1f89c411a7af
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SHA1
40a61771b70d55b72723fa08bd461162ca5c1a5a
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SHA256
80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85
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SHA512
cf0055f18e2809319bc893e8e2b5c7b9d25cf8ce6eecf8fbb5c77c3f10196545f72618116d2a79994ad3fd327a50435277f09ef96273bd3161e697eb0b98cef3
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SSDEEP
3072:eGrvRknb6sxBl0E+RyBch+l5wJGVTa/pvfM7RCpGIg:X7RcZt9Ih6uJkeEOg
Malware Config
Signatures
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Drops file in System32 directory 1 IoCs
Processes:
sitkasel.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat sitkasel.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:
sitkasel.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E41B447D-30D3-45FC-9CA5-C57090F67113}\82-79-65-bf-18-2f sitkasel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections sitkasel.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 sitkasel.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" sitkasel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings sitkasel.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 sitkasel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad sitkasel.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0095000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 sitkasel.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" sitkasel.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E41B447D-30D3-45FC-9CA5-C57090F67113}\WpadDecisionReason = "1" sitkasel.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E41B447D-30D3-45FC-9CA5-C57090F67113}\WpadDecision = "0" sitkasel.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E41B447D-30D3-45FC-9CA5-C57090F67113}\WpadNetworkName = "Network 3" sitkasel.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings sitkasel.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E41B447D-30D3-45FC-9CA5-C57090F67113}\WpadDecisionTime = 40cba6731634d901 sitkasel.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix sitkasel.exe Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" sitkasel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{E41B447D-30D3-45FC-9CA5-C57090F67113} sitkasel.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-79-65-bf-18-2f sitkasel.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-79-65-bf-18-2f\WpadDecisionReason = "1" sitkasel.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-79-65-bf-18-2f\WpadDecisionTime = 40cba6731634d901 sitkasel.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\82-79-65-bf-18-2f\WpadDecision = "0" sitkasel.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
sitkasel.exepid process 1088 sitkasel.exe 1088 sitkasel.exe 1088 sitkasel.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exepid process 1172 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe -
Suspicious use of UnmapMainImage 4 IoCs
Processes:
80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exesitkasel.exesitkasel.exepid process 1704 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe 1172 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe 1060 sitkasel.exe 1088 sitkasel.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exesitkasel.exedescription pid process target process PID 1704 wrote to memory of 1172 1704 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe PID 1704 wrote to memory of 1172 1704 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe PID 1704 wrote to memory of 1172 1704 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe PID 1704 wrote to memory of 1172 1704 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe 80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe PID 1060 wrote to memory of 1088 1060 sitkasel.exe sitkasel.exe PID 1060 wrote to memory of 1088 1060 sitkasel.exe sitkasel.exe PID 1060 wrote to memory of 1088 1060 sitkasel.exe sitkasel.exe PID 1060 wrote to memory of 1088 1060 sitkasel.exe sitkasel.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe"C:\Users\Admin\AppData\Local\Temp\80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe"1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\80a087ec36a0a71dc941e8d10c2bffde8aa4892268f3d75af9ebcb2d1b1b7d85.exe--93450bd22⤵
- Suspicious behavior: RenamesItself
- Suspicious use of UnmapMainImage
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C:\Windows\SysWOW64\sitkasel.exe"C:\Windows\SysWOW64\sitkasel.exe"1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\sitkasel.exe--5b4c66582⤵
- 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/1088-60-0x0000000000000000-mapping.dmp
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memory/1088-62-0x0000000000400000-0x0000000000426000-memory.dmpFilesize
152KB
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memory/1172-55-0x0000000000000000-mapping.dmp
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memory/1172-58-0x0000000000400000-0x0000000000426000-memory.dmpFilesize
152KB
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memory/1172-59-0x00000000762B1000-0x00000000762B3000-memory.dmpFilesize
8KB
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memory/1172-61-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/1704-54-0x0000000000220000-0x0000000000231000-memory.dmpFilesize
68KB
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memory/1704-57-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/1704-56-0x0000000000220000-0x0000000000231000-memory.dmpFilesize
68KB