Analysis
- max time kernel
292s - max time network
299s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
30/05/2024, 22:50
General
- Target 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe
- Size 5.2MB
- Sample240530-2scxnscf71
- SHA256 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620
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\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe"C:\Users\Admin\AppData\Local\Temp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-PPEG1.tmp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp"C:\Users\Admin\AppData\Local\Temp\is-PPEG1.tmp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp" /SL5="$A01D4,5215766,54272,C:\Users\Admin\AppData\Local\Temp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.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
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
fgaudioconverter.exe
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp
_iscrypt.dll
memory/924-99-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-102-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-127-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-124-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-121-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-117-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-114-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-111-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-68-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-71-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-74-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-77-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-80-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-81-0x00000000009B0000-0x0000000000A52000-memory.dmp
memory/924-85-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-90-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-93-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-96-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-108-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/924-105-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/3320-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3320-66-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3320-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/4320-63-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/4320-60-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/4320-59-0x0000000000400000-0x00000000006F7000-memory.dmp
memory/5080-16-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/5080-67-0x0000000000400000-0x00000000004BA000-memory.dmp