Analysis
- max time kernel
141s - max time network
129s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
04/06/2024, 09:09
General
- Target 91c734d09f8a0975dd4181e4018b1575e1a29c9b6b18834f38d056e9e3cd853c.exe
- Size 6.2MB
- Sample240604-k4h5dscc37
- SHA256 91c734d09f8a0975dd4181e4018b1575e1a29c9b6b18834f38d056e9e3cd853c
Malware Config
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Unexpected DNS network traffic destination 1 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\91c734d09f8a0975dd4181e4018b1575e1a29c9b6b18834f38d056e9e3cd853c.exe"C:\Users\Admin\AppData\Local\Temp\91c734d09f8a0975dd4181e4018b1575e1a29c9b6b18834f38d056e9e3cd853c.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-3F9KC.tmp\91c734d09f8a0975dd4181e4018b1575e1a29c9b6b18834f38d056e9e3cd853c.tmp"C:\Users\Admin\AppData\Local\Temp\is-3F9KC.tmp\91c734d09f8a0975dd4181e4018b1575e1a29c9b6b18834f38d056e9e3cd853c.tmp" /SL5="$4021C,6264333,54272,C:\Users\Admin\AppData\Local\Temp\91c734d09f8a0975dd4181e4018b1575e1a29c9b6b18834f38d056e9e3cd853c.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Audio Amplifier\freeaudioamplifier.exe"C:\Users\Admin\AppData\Local\Free Audio Amplifier\freeaudioamplifier.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Audio Amplifier\freeaudioamplifier.exe"C:\Users\Admin\AppData\Local\Free Audio Amplifier\freeaudioamplifier.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
freeaudioamplifier.exe
91c734d09f8a0975dd4181e4018b1575e1a29c9b6b18834f38d056e9e3cd853c.tmp
_iscrypt.dll
memory/3320-69-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3320-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/3320-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3328-59-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3328-64-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3328-62-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-74-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-88-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-67-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-118-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-71-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-115-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-75-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-78-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-81-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-84-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-87-0x0000000000BD0000-0x0000000000C72000-memory.dmp
memory/3952-68-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-94-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-97-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-100-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-103-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-106-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-109-0x0000000000400000-0x00000000008AD000-memory.dmp
memory/3952-110-0x0000000000BD0000-0x0000000000C72000-memory.dmp
memory/3952-111-0x0000000000BD0000-0x0000000000C72000-memory.dmp
memory/4364-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4364-70-0x0000000000400000-0x00000000004BA000-memory.dmp