Analysis
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max time kernel
121s -
max time network
127s -
platform
windows10_x64 -
resource
win10-en-20211014 -
submitted
16-11-2021 22:24
Static task
static1
General
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Target
4a33d30818c38d1b22a8cfc2bca8ba0b2ddeef9bef997658b4700e7000453fe4.dll
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Size
252KB
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MD5
80bae2f52501f9fe3bd8aa850cd0a6cb
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SHA1
188691baa5ec8bab7395dbc92524e9a4e5a670b5
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SHA256
4a33d30818c38d1b22a8cfc2bca8ba0b2ddeef9bef997658b4700e7000453fe4
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SHA512
4d99e433e8eecd0c9a5be1c64d9748a62bd506538dc8dcaf63170c4b3dc34bb04f4b58d300dd7b80cf4c01479acbd0de5a46ac02f6ad8f71adc25c97cda17eb9
Malware Config
Extracted
emotet
Epoch4
81.0.236.93:443
94.177.248.64:443
66.42.55.5:7080
103.8.26.103:8080
185.184.25.237:8080
45.76.176.10:8080
188.93.125.116:8080
103.8.26.102:8080
178.79.147.66:8080
58.227.42.236:80
45.118.135.203:7080
103.75.201.2:443
195.154.133.20:443
45.142.114.231:8080
212.237.5.209:443
207.38.84.195:8080
104.251.214.46:8080
138.185.72.26:8080
51.68.175.8:8080
210.57.217.132:8080
Signatures
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Blocklisted process makes network request 2 IoCs
Processes:
rundll32.exeflow pid process 18 2256 rundll32.exe 23 2256 rundll32.exe -
Drops file in System32 directory 1 IoCs
Processes:
rundll32.exedescription ioc process File opened for modification C:\Windows\SysWOW64\Onufsofo\ypeitfs.vbh rundll32.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 2 IoCs
Processes:
rundll32.exepid process 2256 rundll32.exe 2256 rundll32.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
rundll32.exepid process 3312 rundll32.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
rundll32.exerundll32.exerundll32.exerundll32.exedescription pid process target process PID 2732 wrote to memory of 3040 2732 rundll32.exe rundll32.exe PID 2732 wrote to memory of 3040 2732 rundll32.exe rundll32.exe PID 2732 wrote to memory of 3040 2732 rundll32.exe rundll32.exe PID 3040 wrote to memory of 3312 3040 rundll32.exe rundll32.exe PID 3040 wrote to memory of 3312 3040 rundll32.exe rundll32.exe PID 3040 wrote to memory of 3312 3040 rundll32.exe rundll32.exe PID 3312 wrote to memory of 700 3312 rundll32.exe rundll32.exe PID 3312 wrote to memory of 700 3312 rundll32.exe rundll32.exe PID 3312 wrote to memory of 700 3312 rundll32.exe rundll32.exe PID 700 wrote to memory of 2256 700 rundll32.exe rundll32.exe PID 700 wrote to memory of 2256 700 rundll32.exe rundll32.exe PID 700 wrote to memory of 2256 700 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\4a33d30818c38d1b22a8cfc2bca8ba0b2ddeef9bef997658b4700e7000453fe4.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2732 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\4a33d30818c38d1b22a8cfc2bca8ba0b2ddeef9bef997658b4700e7000453fe4.dll,#12⤵
- Suspicious use of WriteProcessMemory
PID:3040 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\AppData\Local\Temp\4a33d30818c38d1b22a8cfc2bca8ba0b2ddeef9bef997658b4700e7000453fe4.dll",Control_RunDLL3⤵
- Drops file in System32 directory
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:3312 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Onufsofo\ypeitfs.vbh",ZKvbxYuBNCG4⤵
- Suspicious use of WriteProcessMemory
PID:700 -
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Onufsofo\ypeitfs.vbh",Control_RunDLL5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:2256
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/700-118-0x0000000000000000-mapping.dmp
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memory/2256-119-0x0000000000000000-mapping.dmp
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memory/3040-115-0x0000000000000000-mapping.dmp
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memory/3040-117-0x0000000010000000-0x0000000010028000-memory.dmpFilesize
160KB
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memory/3312-116-0x0000000000000000-mapping.dmp