Analysis
- max time kernel
12s - max time network
106s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 19:29
General
- Target invoice.exe
- Size 543KB
- Sample201109-v25qf3fprn
- SHA256 52d60767d2ff5516a17a6a2a429dd47fd2dafa69a778e1da6129c7f1dd3eeae4
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
- UPX packed file 3 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\invoice.exe"C:\Users\Admin\AppData\Local\Temp\invoice.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\invoice.exe"C:\Users\Admin\AppData\Local\Temp\invoice.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" cmd /c bfsvc.exe "true" "true" "true" "true"3⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\bfsvc.exebfsvc.exe "true" "true" "true" "true"4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
memory/3476-19-0x0000000005D70000-0x0000000005D71000-memory.dmp
memory/3476-16-0x0000000000600000-0x0000000000601000-memory.dmp
memory/3476-15-0x0000000073830000-0x0000000073F1E000-memory.dmp
memory/3960-4-0x0000000000A50000-0x0000000000A6A000-memory.dmp
memory/3960-10-0x0000000004680000-0x0000000004681000-memory.dmp
memory/3960-9-0x0000000004940000-0x0000000004941000-memory.dmp
memory/3960-6-0x0000000073830000-0x0000000073F1E000-memory.dmp
memory/3960-5-0x0000000002232000-0x0000000002233000-memory.dmp
memory/3960-3-0x0000000000400000-0x0000000000440000-memory.dmp
memory/3960-2-0x0000000000400000-0x0000000000440000-memory.dmp
memory/3960-0-0x0000000000400000-0x0000000000440000-memory.dmp
memory/3960-21-0x0000000005CE0000-0x0000000005CE1000-memory.dmp
memory/3960-22-0x0000000006D90000-0x0000000006D91000-memory.dmp