Analysis
- max time kernel
146s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
02/06/2024, 06:29
General
- Target b975dfd83ef055c5bbc24f802819bdb08faf9db65c249a506a60d1b446d807ec.exe
- Size 6.8MB
- Sample240602-g87f1aec98
- SHA256 b975dfd83ef055c5bbc24f802819bdb08faf9db65c249a506a60d1b446d807ec
Malware Config
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 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\b975dfd83ef055c5bbc24f802819bdb08faf9db65c249a506a60d1b446d807ec.exe"C:\Users\Admin\AppData\Local\Temp\b975dfd83ef055c5bbc24f802819bdb08faf9db65c249a506a60d1b446d807ec.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-8MV6K.tmp\b975dfd83ef055c5bbc24f802819bdb08faf9db65c249a506a60d1b446d807ec.tmp"C:\Users\Admin\AppData\Local\Temp\is-8MV6K.tmp\b975dfd83ef055c5bbc24f802819bdb08faf9db65c249a506a60d1b446d807ec.tmp" /SL5="$501E4,6919618,54272,C:\Users\Admin\AppData\Local\Temp\b975dfd83ef055c5bbc24f802819bdb08faf9db65c249a506a60d1b446d807ec.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Voice Changer Emerald\voicechangeremerald.exe"C:\Users\Admin\AppData\Local\Voice Changer Emerald\voicechangeremerald.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Voice Changer Emerald\voicechangeremerald.exe"C:\Users\Admin\AppData\Local\Voice Changer Emerald\voicechangeremerald.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
b975dfd83ef055c5bbc24f802819bdb08faf9db65c249a506a60d1b446d807ec.tmp
_iscrypt.dll
_isdecmp.dll
voicechangeremerald.exe
memory/2512-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/2512-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2512-74-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2708-68-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/2708-70-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/2708-65-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3324-75-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3324-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3568-79-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-101-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-73-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-82-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-85-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-88-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-89-0x0000000000BA0000-0x0000000000C42000-memory.dmp
memory/3568-95-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-98-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-76-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-104-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-107-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-110-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-113-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-114-0x0000000000BA0000-0x0000000000C42000-memory.dmp
memory/3568-115-0x0000000000BA0000-0x0000000000C42000-memory.dmp
memory/3568-119-0x0000000000400000-0x00000000008B6000-memory.dmp
memory/3568-122-0x0000000000400000-0x00000000008B6000-memory.dmp