Analysis
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max time kernel
140s -
max time network
171s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
07-03-2022 10:06
Behavioral task
behavioral1
Sample
4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
General
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Target
4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe
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Size
65KB
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MD5
743bbf55fcac5109085838b18fa0ba08
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SHA1
fccef012994d3d70a861d5fad4b6702235f43f74
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SHA256
4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b
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SHA512
e659809d48051f0a0fd794e8ad6388e3a4799844104ea7a9776dac4883e7ebb7f9489f17c82395bdff2245a641f60b2aa490e4b068ed14820cf15e4a642dfad4
Malware Config
Signatures
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Drops file in System32 directory 1 IoCs
Processes:
tcgwsa.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat tcgwsa.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:
tcgwsa.exedescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections tcgwsa.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 tcgwsa.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0084000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 tcgwsa.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F75BEC84-6DCD-409E-87E8-E080D430F729} tcgwsa.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F75BEC84-6DCD-409E-87E8-E080D430F729}\WpadDecisionTime = 305769f21a32d801 tcgwsa.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F75BEC84-6DCD-409E-87E8-E080D430F729}\WpadDecision = "0" tcgwsa.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ba-35-c6-f5-1d-95\WpadDecision = "0" tcgwsa.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 tcgwsa.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad tcgwsa.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings tcgwsa.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix tcgwsa.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F75BEC84-6DCD-409E-87E8-E080D430F729}\WpadDecisionReason = "1" tcgwsa.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F75BEC84-6DCD-409E-87E8-E080D430F729}\ba-35-c6-f5-1d-95 tcgwsa.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ba-35-c6-f5-1d-95\WpadDecisionTime = 305769f21a32d801 tcgwsa.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" tcgwsa.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" tcgwsa.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings tcgwsa.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" tcgwsa.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{F75BEC84-6DCD-409E-87E8-E080D430F729}\WpadNetworkName = "Network 3" tcgwsa.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ba-35-c6-f5-1d-95 tcgwsa.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\ba-35-c6-f5-1d-95\WpadDecisionReason = "1" tcgwsa.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
tcgwsa.exepid process 1064 tcgwsa.exe 1064 tcgwsa.exe 1064 tcgwsa.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exepid process 1612 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exetcgwsa.exedescription pid process target process PID 1568 wrote to memory of 1612 1568 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe PID 1568 wrote to memory of 1612 1568 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe PID 1568 wrote to memory of 1612 1568 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe PID 1568 wrote to memory of 1612 1568 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe 4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe PID 1516 wrote to memory of 1064 1516 tcgwsa.exe tcgwsa.exe PID 1516 wrote to memory of 1064 1516 tcgwsa.exe tcgwsa.exe PID 1516 wrote to memory of 1064 1516 tcgwsa.exe tcgwsa.exe PID 1516 wrote to memory of 1064 1516 tcgwsa.exe tcgwsa.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe"C:\Users\Admin\AppData\Local\Temp\4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1568 -
C:\Users\Admin\AppData\Local\Temp\4c372cc3560daa6eefcf3d17a1aca0529bd1b43b7c4c5024d9884be17f0f602b.exe--29b17e622⤵
- Suspicious behavior: RenamesItself
PID:1612
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C:\Windows\SysWOW64\tcgwsa.exe"C:\Windows\SysWOW64\tcgwsa.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1516 -
C:\Windows\SysWOW64\tcgwsa.exe--68ccf87f2⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
PID:1064
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