Analysis
- max time kernel
300s - max time network
301s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
30/05/2024, 23:17
General
- Target 985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe
- Size 4.6MB
- Sample240530-29q6maef69
- SHA256 985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1
Malware Config
Signatures
- Detect Socks5Systemz Payload 1 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Unexpected DNS network traffic destination 2 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe"C:\Users\Admin\AppData\Local\Temp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-NR4CI.tmp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp"C:\Users\Admin\AppData\Local\Temp\is-NR4CI.tmp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp" /SL5="$600DA,4606889,54272,C:\Users\Admin\AppData\Local\Temp\985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe"C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe"C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
fgaudioconverter.exe
985ff57a323776493f53da404ac68426da4a73e9a4e9bc8249b8506e1cbe8be1.tmp
_iscrypt.dll
memory/196-107-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-110-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-129-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-126-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-123-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-119-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-66-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-116-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-113-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-70-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-73-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-76-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-79-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-82-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-92-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-101-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-85-0x0000000000890000-0x0000000000932000-memory.dmp
memory/196-95-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-98-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-89-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/196-104-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/2072-64-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/2072-60-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/2072-59-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/3532-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3532-69-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4568-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/4568-68-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4568-0-0x0000000000400000-0x0000000000414000-memory.dmp